Add motion manager

Added motions tab, hermite curve editor, quaternion overshoot blend and so on.

ACKNOWLEDGEMENTS.html

@@ -544,3 +544,15 @@ https://www.reddit.com/r/gamedev/comments/5iuf3h/i_am_writting_a_3d_monster_mode
 <pre>
     https://appimage.org/
 </pre>
+
+<h1>Sam Hocevar</h1>
+<pre>
+    https://gamedev.stackexchange.com/questions/98246/quaternion-slerp-and-lerp-implementation-with-overshoot
+</pre>
+
+<h1>David Rosen</h1>
+<pre>
+    An Indie Approach to Procedural Animation
+    http://www.gdcvault.com/play/1020583/Animation-Bootcamp-An-Indie-Approach
+</pre>
+

dust3d.pro

@@ -200,6 +200,30 @@ HEADERS += src/meshweldseam.h
 SOURCES += src/advancesettingwidget.cpp
 HEADERS += src/advancesettingwidget.h
 
+SOURCES += src/curveutil.cpp
+HEADERS += src/curveutil.h
+
+SOURCES += src/interpolationgraphicswidget.cpp
+HEADERS += src/interpolationgraphicswidget.h
+
+SOURCES += src/motioneditwidget.cpp
+HEADERS += src/motioneditwidget.h
+
+SOURCES += src/motionmanagewidget.cpp
+HEADERS += src/motionmanagewidget.h
+
+SOURCES += src/motionlistwidget.cpp
+HEADERS += src/motionlistwidget.h
+
+SOURCES += src/motionwidget.cpp
+HEADERS += src/motionwidget.h
+
+SOURCES += src/motionpreviewsgenerator.cpp
+HEADERS += src/motionpreviewsgenerator.h
+
+SOURCES += src/animationclipplayer.cpp
+HEADERS += src/animationclipplayer.h
+
 SOURCES += src/main.cpp
 
 HEADERS += src/version.h
@@ -436,13 +460,6 @@ macx {
 	GMP_LIBDIR = /usr/local/opt/gmp/lib
 	MPFR_INCLUDEDIR = /usr/local/opt/mpfr/include
 	MPFR_LIBDIR = /usr/local/opt/mpfr/lib
-
-	exists(/usr/local/opt/opencv) {
-		INCLUDEPATH += /usr/local/opt/opencv/include
-		LIBS += -L/usr/local/opt/opencv/lib -lopencv_core -lopencv_videoio -lopencv_imgproc
-	
-		DEFINES += "USE_OPENCV=1"
-	}
 }
 
 unix:!macx {

src/animationclipplayer.cpp

@@ -0,0 +1,59 @@
+#include "animationclipplayer.h"
+
+AnimationClipPlayer::~AnimationClipPlayer()
+{
+    clear();
+}
+
+void AnimationClipPlayer::updateFrameMeshes(std::vector<std::pair<float, MeshLoader *>> &frameMeshes)
+{
+    clear();
+    
+    m_frameMeshes = frameMeshes;
+    frameMeshes.clear();
+    
+    m_currentPlayIndex = 0;
+    m_countForFrame.restart();
+    
+    if (!m_frameMeshes.empty())
+        m_timerForFrame.singleShot(0, this, &AnimationClipPlayer::frameReadyToShow);
+}
+
+void AnimationClipPlayer::clear()
+{
+    freeFrames();
+    delete m_lastFrameMesh;
+    m_lastFrameMesh = nullptr;
+}
+
+void AnimationClipPlayer::freeFrames()
+{
+    for (auto &it: m_frameMeshes) {
+        delete it.second;
+    }
+    m_frameMeshes.clear();
+}
+
+MeshLoader *AnimationClipPlayer::takeFrameMesh()
+{
+    if (m_currentPlayIndex >= (int)m_frameMeshes.size()) {
+        if (nullptr != m_lastFrameMesh)
+            return new MeshLoader(*m_lastFrameMesh);
+        return nullptr;
+    }
+    int millis = m_frameMeshes[m_currentPlayIndex].first * 1000 - m_countForFrame.elapsed();
+    if (millis > 0) {
+        m_timerForFrame.singleShot(millis, this, &AnimationClipPlayer::frameReadyToShow);
+        if (nullptr != m_lastFrameMesh)
+            return new MeshLoader(*m_lastFrameMesh);
+        return nullptr;
+    }
+    m_currentPlayIndex = (m_currentPlayIndex + 1) % m_frameMeshes.size();
+    m_countForFrame.restart();
+
+    MeshLoader *mesh = new MeshLoader(*m_frameMeshes[m_currentPlayIndex].second);
+    m_timerForFrame.singleShot(m_frameMeshes[m_currentPlayIndex].first * 1000, this, &AnimationClipPlayer::frameReadyToShow);
+    delete m_lastFrameMesh;
+    m_lastFrameMesh = new MeshLoader(*mesh);
+    return mesh;
+}

src/animationclipplayer.h

@@ -0,0 +1,29 @@
+#ifndef ANIMATION_PLAYER_H
+#define ANIMATION_PLAYER_H
+#include <QObject>
+#include <QTimer>
+#include <QTime>
+#include "meshloader.h"
+
+class AnimationClipPlayer : public QObject
+{
+    Q_OBJECT
+signals:
+    void frameReadyToShow();
+public:
+    ~AnimationClipPlayer();
+    MeshLoader *takeFrameMesh();
+    void updateFrameMeshes(std::vector<std::pair<float, MeshLoader *>> &frameMeshes);
+    void clear();
+private:
+    void freeFrames();
+private:
+    MeshLoader *m_lastFrameMesh = nullptr;
+    int m_currentPlayIndex = 0;
+private:
+    std::vector<std::pair<float, MeshLoader *>> m_frameMeshes;
+    QTime m_countForFrame;
+    QTimer m_timerForFrame;
+};
+
+#endif

src/curveutil.cpp

@@ -0,0 +1,63 @@
+#include "curveutil.h"
+
+void hermiteCurveToPainterPath(const std::vector<HermiteControlNode> &hermiteControlNodes,
+    QPainterPath &toPath)
+{
+    if (!hermiteControlNodes.empty()) {
+        QPainterPath path(QPointF(hermiteControlNodes[0].position.x(),
+            hermiteControlNodes[0].position.y()));
+        for (size_t i = 1; i < hermiteControlNodes.size(); i++) {
+            const auto &beginHermite = hermiteControlNodes[i - 1];
+            const auto &endHermite = hermiteControlNodes[i];
+            BezierControlNode bezier(beginHermite, endHermite);
+            path.cubicTo(QPointF(bezier.handles[0].x(), bezier.handles[0].y()),
+                QPointF(bezier.handles[1].x(), bezier.handles[1].y()),
+                QPointF(bezier.endpoint.x(), bezier.endpoint.y()));
+        }
+        toPath = path;
+    }
+}
+
+QVector2D calculateHermiteInterpolation(const std::vector<HermiteControlNode> &hermiteControlNodes, 
+    float knot)
+{
+    if (hermiteControlNodes.size() < 2)
+        return QVector2D();
+    
+    int startControlIndex = 0;
+    int stopControlIndex = hermiteControlNodes.size() - 1;
+    for (size_t i = 0; i < hermiteControlNodes.size(); i++) {
+        if (hermiteControlNodes[i].position.x() > knot)
+            break;
+        startControlIndex = i;
+    }
+    for (int i = (int)hermiteControlNodes.size() - 1; i >= 0; i--) {
+        if (hermiteControlNodes[i].position.x() < knot)
+            break;
+        stopControlIndex = i;
+    }
+    if (startControlIndex >= stopControlIndex)
+        return QVector2D();
+    
+    const auto &startControlNode = hermiteControlNodes[startControlIndex];
+    const auto &stopControlNode = hermiteControlNodes[stopControlIndex];
+    
+    if (startControlNode.position.x() >= stopControlNode.position.x())
+        return startControlNode.position;
+    
+    float length = (float)(stopControlNode.position.x() - startControlNode.position.x());
+    float t = (knot - startControlNode.position.x()) / length;
+    float t2 = t * t;
+    float t3 = t2 * t;
+    float h1 = 2 * t3 - 3 * t2 + 1;
+    float h2 = -2 * t3 + 3 * t2;
+    float h3 = t3 - 2 * t2 + t;
+    float h4 = t3 -  t2;
+    
+    QVector2D interpolatedPosition = h1 * startControlNode.position +
+        h2 * stopControlNode.position +
+        h3 * startControlNode.outTangent +
+        h4 * stopControlNode.inTangent;
+
+    return interpolatedPosition;
+}

src/curveutil.h

@@ -0,0 +1,43 @@
+#ifndef CURVE_UTIL_H
+#define CURVE_UTIL_H
+#include <QPointF>
+#include <vector>
+#include <QPainterPath>
+#include <QVector2D>
+
+class HermiteControlNode
+{
+public:
+    QVector2D position;
+    QVector2D inTangent;
+    QVector2D outTangent;
+    
+    HermiteControlNode(const QVector2D &p, const QVector2D &tin, const QVector2D &tout)
+    {
+        position = p;
+        inTangent = tin;
+        outTangent = tout;
+    }
+};
+
+class BezierControlNode
+{
+public:
+    QVector2D endpoint;
+    QVector2D handles[2];
+    
+    BezierControlNode(const HermiteControlNode &beginHermite,
+        const HermiteControlNode &endHermite)
+    {
+        endpoint = endHermite.position;
+        handles[0] = beginHermite.position + beginHermite.outTangent / 3;
+        handles[1] = endHermite.position - endHermite.inTangent / 3;
+    }
+};
+
+void hermiteCurveToPainterPath(const std::vector<HermiteControlNode> &hermiteControlNodes,
+    QPainterPath &toPath);
+QVector2D calculateHermiteInterpolation(const std::vector<HermiteControlNode> &hermiteControlNodes, 
+    float knot);
+
+#endif

src/dust3dutil.cpp

@@ -56,3 +56,21 @@ QString unifiedWindowTitle(const QString &text)
 {
     return text + QObject::tr(" - ") + APP_NAME;
 }
+
+// Sam Hocevar's answer
+// https://gamedev.stackexchange.com/questions/98246/quaternion-slerp-and-lerp-implementation-with-overshoot
+QQuaternion quaternionOvershootSlerp(const QQuaternion &q0, const QQuaternion &q1, float t)
+{
+    // If t is too large, divide it by two recursively
+    if (t > 1.0) {
+        auto tmp = quaternionOvershootSlerp(q0, q1, t / 2);
+        return tmp * q0.inverted() * tmp;
+    }
+
+    // It’s easier to handle negative t this way
+    if (t < 0.0)
+        return quaternionOvershootSlerp(q1, q0, 1.0 - t);
+
+    return QQuaternion::slerp(q0, q1, t);
+}
+

src/dust3dutil.h

@@ -18,5 +18,6 @@ QVector3D pointInHermiteCurve(float t, QVector3D p0, QVector3D m0, QVector3D p1,
 float angleInRangle360BetweenTwoVectors(QVector3D a, QVector3D b, QVector3D planeNormal);
 QVector3D projectLineOnPlane(QVector3D line, QVector3D planeNormal);
 QString unifiedWindowTitle(const QString &text);
+QQuaternion quaternionOvershootSlerp(const QQuaternion &q0, const QQuaternion &q1, float t);
 
 #endif

src/infolabel.cpp

@@ -15,6 +15,7 @@ InfoLabel::InfoLabel(const QString &text, QWidget *parent) :
     QHBoxLayout *mainLayout = new QHBoxLayout;
     mainLayout->addWidget(m_icon);
     mainLayout->addWidget(m_label);
+    mainLayout->addStretch();
     
     setLayout(mainLayout);
 }

src/interpolationgraphicswidget.cpp

@@ -0,0 +1,680 @@
+#include <QGraphicsScene>
+#include <QBrush>
+#include <QGraphicsPathItem>
+#include <QMenu>
+#include <QDebug>
+#include <QLabel>
+#include "interpolationgraphicswidget.h"
+#include "theme.h"
+
+const float InterpolationGraphicsWidget::m_anchorRadius = 5;
+const float InterpolationGraphicsWidget::m_handleRadius = 7;
+const int InterpolationGraphicsWidget::m_gridColumns = 20;
+const int InterpolationGraphicsWidget::m_gridRows = 10;
+const int InterpolationGraphicsWidget::m_sceneWidth = 640;
+const int InterpolationGraphicsWidget::m_sceneHeight = 480;
+const float InterpolationGraphicsWidget::m_tangentMagnitudeScaleFactor = 9;
+
+InterpolationGraphicsWidget::InterpolationGraphicsWidget(QWidget *parent) :
+    QGraphicsView(parent)
+{
+    setRenderHint(QPainter::Antialiasing);
+    
+    setObjectName("interpolationGraphics");
+    setStyleSheet("#interpolationGraphics {background: transparent}");
+    
+    setScene(new QGraphicsScene());
+    scene()->setSceneRect(QRectF(0, 0, InterpolationGraphicsWidget::m_sceneWidth, InterpolationGraphicsWidget::m_sceneHeight));
+    
+    QColor curveColor = Theme::green;
+    QColor gridColor = QColor(0x19, 0x19, 0x19);
+    
+    QPen curvePen;
+    curvePen.setColor(curveColor);
+    curvePen.setWidth(3);
+    
+    QPen gridPen;
+    gridPen.setColor(gridColor);
+    gridPen.setWidth(0);
+    
+    m_cursorItem = new InterpolationGraphicsCursorItem;
+    m_cursorItem->setFlag(QGraphicsItem::ItemSendsScenePositionChanges, !m_previewOnly);
+    m_cursorItem->setRect(0, 0, 0, InterpolationGraphicsWidget::m_sceneHeight);
+    m_cursorItem->setFlags(m_cursorItem->flags() & ~(Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable));
+    m_cursorItem->setZValue(-1);
+    scene()->addItem(m_cursorItem);
+    
+    if (m_gridEnabled) {
+        m_gridRowLineItems.resize(m_gridRows + 1);
+        float rowHeight = scene()->sceneRect().height() / m_gridRows;
+        for (int row = 0; row <= m_gridRows; row++) {
+            m_gridRowLineItems[row] = new QGraphicsLineItem();
+            m_gridRowLineItems[row]->setFlags(m_gridRowLineItems[row]->flags() & ~(Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable));
+            m_gridRowLineItems[row]->setPen(gridPen);
+            float y = scene()->sceneRect().top() + row * rowHeight;
+            m_gridRowLineItems[row]->setLine(scene()->sceneRect().left(), y, scene()->sceneRect().right(), y);
+            scene()->addItem(m_gridRowLineItems[row]);
+        }
+        m_gridColumnLineItems.resize(m_gridColumns + 1);
+        float columnWidth = scene()->sceneRect().width() / m_gridColumns;
+        for (int column = 0; column <= m_gridColumns; column++) {
+            m_gridColumnLineItems[column] = new QGraphicsLineItem();
+            m_gridColumnLineItems[column]->setFlags(m_gridColumnLineItems[column]->flags() & ~(Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable));
+            m_gridColumnLineItems[column]->setPen(gridPen);
+            float x = scene()->sceneRect().left() + column * columnWidth;
+            m_gridColumnLineItems[column]->setLine(x, scene()->sceneRect().top(), x, scene()->sceneRect().bottom());
+            scene()->addItem(m_gridColumnLineItems[column]);
+        }
+    }
+    
+    m_pathItem = new QGraphicsPathItem;
+    m_pathItem->setPen(curvePen);
+    scene()->addItem(m_pathItem);
+}
+
+void InterpolationGraphicsWidget::toNormalizedControlNodes(std::vector<HermiteControlNode> &snapshot)
+{
+    snapshot = m_controlNodes;
+    for (auto &item: snapshot) {
+        item.position.setX(item.position.x() / scene()->sceneRect().width());
+        item.position.setY(item.position.y() / scene()->sceneRect().height());
+        item.inTangent.setX(item.inTangent.x() / scene()->sceneRect().width());
+        item.inTangent.setY(item.inTangent.y() / scene()->sceneRect().height());
+        item.outTangent.setX(item.outTangent.x() / scene()->sceneRect().width());
+        item.outTangent.setY(item.outTangent.y() / scene()->sceneRect().height());
+        item.inTangent *= InterpolationGraphicsWidget::m_tangentMagnitudeScaleFactor;
+        item.outTangent *= InterpolationGraphicsWidget::m_tangentMagnitudeScaleFactor;
+    }
+}
+
+void InterpolationGraphicsWidget::fromNormalizedControlNodes(const std::vector<HermiteControlNode> &snapshot)
+{
+    m_controlNodes = snapshot;
+    for (auto &item: m_controlNodes) {
+        item.position.setX(item.position.x() * scene()->sceneRect().width());
+        item.position.setY(item.position.y() * scene()->sceneRect().height());
+        item.inTangent.setX(item.inTangent.x() * scene()->sceneRect().width());
+        item.inTangent.setY(item.inTangent.y() * scene()->sceneRect().height());
+        item.outTangent.setX(item.outTangent.x() * scene()->sceneRect().width());
+        item.outTangent.setY(item.outTangent.y() * scene()->sceneRect().height());
+        item.inTangent /= InterpolationGraphicsWidget::m_tangentMagnitudeScaleFactor;
+        item.outTangent /= InterpolationGraphicsWidget::m_tangentMagnitudeScaleFactor;
+    }
+    refresh();
+}
+
+void InterpolationGraphicsWidget::resizeEvent(QResizeEvent *event)
+{
+    QGraphicsView::resizeEvent(event);
+    if (scene())
+        fitInView(scene()->sceneRect(), Qt::KeepAspectRatio);
+}
+
+void InterpolationGraphicsWidget::setControlNodes(const std::vector<HermiteControlNode> &nodes)
+{
+    invalidateControlSelection();
+    fromNormalizedControlNodes(nodes);
+    refresh();
+}
+
+void InterpolationGraphicsWidget::setKeyframes(const std::vector<std::pair<float, QString>> &keyframes)
+{
+    invalidateKeyframeSelection();
+    m_keyframes = keyframes;
+    refresh();
+}
+
+void InterpolationGraphicsWidget::refreshControlAnchor(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    if (nullptr == m_anchorItems[index]) {
+        m_anchorItems[index] = new InterpolationGraphicsCircleItem(m_anchorRadius);
+        m_anchorItems[index]->setFlag(QGraphicsItem::ItemIsMovable, !m_previewOnly);
+        m_anchorItems[index]->setFlag(QGraphicsItem::ItemSendsScenePositionChanges, !m_previewOnly);
+        connect(m_anchorItems[index]->proxy(), &InterpolationGraphicsProxyObject::itemMoved, this, [=](QPointF point) {
+            QVector2D newControlPosition = QVector2D(point.x(), point.y());
+            if (index - 1 >= 0 && newControlPosition.x() < m_controlNodes[index - 1].position.x())
+                newControlPosition.setX(m_controlNodes[index - 1].position.x());
+            else if (index + 1 <= (int)m_controlNodes.size() - 1 && newControlPosition.x() > m_controlNodes[index + 1].position.x())
+                newControlPosition.setX(m_controlNodes[index + 1].position.x());
+            m_controlNodes[index].position = newControlPosition;
+            refreshCurve();
+            refreshControlNode(index);
+            refreshKeyframes();
+            emit controlNodesChanged();
+        });
+        connect(m_anchorItems[index]->proxy(), &InterpolationGraphicsProxyObject::itemHoverEnter, this, [=]() {
+            hoverControlNode(index);
+        });
+        connect(m_anchorItems[index]->proxy(), &InterpolationGraphicsProxyObject::itemHoverLeave, this, [=]() {
+            unhoverControlNode(index);
+        });
+        scene()->addItem(m_anchorItems[index]);
+    }
+    
+    const auto &controlNode = m_controlNodes[index];
+    m_anchorItems[index]->setOrigin(QPointF(controlNode.position.x(), controlNode.position.y()));
+}
+
+void InterpolationGraphicsWidget::refreshControlEdges(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    if (nullptr == m_lineItems[index].first) {
+        Q_ASSERT(nullptr == m_lineItems[index].second);
+        m_lineItems[index] = std::make_pair(new InterpolationGraphicsEdgeItem(),
+            new InterpolationGraphicsEdgeItem());
+        scene()->addItem(m_lineItems[index].first);
+        scene()->addItem(m_lineItems[index].second);
+    }
+    
+    const auto &controlNode = m_controlNodes[index];
+    
+    QVector2D inHandlePosition = controlNode.position + controlNode.inTangent;
+    m_lineItems[index].first->setLine(controlNode.position.x(), controlNode.position.y(),
+        inHandlePosition.x(), inHandlePosition.y());
+    
+    QVector2D outHandlePosition = controlNode.position - controlNode.outTangent;
+    m_lineItems[index].second->setLine(controlNode.position.x(), controlNode.position.y(),
+        outHandlePosition.x(), outHandlePosition.y());
+}
+
+void InterpolationGraphicsWidget::refreshControlHandles(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    if (nullptr == m_handleItems[index].first) {
+        Q_ASSERT(nullptr == m_handleItems[index].second);
+        m_handleItems[index] = std::make_pair(new InterpolationGraphicsCircleItem(m_handleRadius, false),
+            new InterpolationGraphicsCircleItem(m_handleRadius, false));
+        m_handleItems[index].first->setFlag(QGraphicsItem::ItemIsMovable, !m_previewOnly);
+        m_handleItems[index].first->setFlag(QGraphicsItem::ItemSendsScenePositionChanges, !m_previewOnly);
+        m_handleItems[index].second->setFlag(QGraphicsItem::ItemIsMovable, !m_previewOnly);
+        m_handleItems[index].second->setFlag(QGraphicsItem::ItemSendsScenePositionChanges, !m_previewOnly);
+        connect(m_handleItems[index].first->proxy(), &InterpolationGraphicsProxyObject::itemMoved, this, [=](QPointF point) {
+            auto newHandlePosition = QVector2D(point.x(), point.y());
+            m_controlNodes[index].inTangent = newHandlePosition - m_controlNodes[index].position;
+            refreshCurve();
+            refreshControlEdges(index);
+            refreshKeyframes();
+            emit controlNodesChanged();
+        });
+        connect(m_handleItems[index].second->proxy(), &InterpolationGraphicsProxyObject::itemMoved, this, [=](QPointF point) {
+            auto newHandlePosition = QVector2D(point.x(), point.y());
+            m_controlNodes[index].outTangent = m_controlNodes[index].position - newHandlePosition;
+            refreshCurve();
+            refreshControlEdges(index);
+            refreshKeyframes();
+            emit controlNodesChanged();
+        });
+        connect(m_handleItems[index].first->proxy(), &InterpolationGraphicsProxyObject::itemHoverEnter, this, [=]() {
+            hoverControlNode(index);
+        });
+        connect(m_handleItems[index].second->proxy(), &InterpolationGraphicsProxyObject::itemHoverEnter, this, [=]() {
+            hoverControlNode(index);
+        });
+        connect(m_handleItems[index].first->proxy(), &InterpolationGraphicsProxyObject::itemHoverLeave, this, [=]() {
+            unhoverControlNode(index);
+        });
+        connect(m_handleItems[index].second->proxy(), &InterpolationGraphicsProxyObject::itemHoverLeave, this, [=]() {
+            unhoverControlNode(index);
+        });
+        scene()->addItem(m_handleItems[index].first);
+        scene()->addItem(m_handleItems[index].second);
+    }
+    
+    const auto &controlNode = m_controlNodes[index];
+    
+    QVector2D inHandlePosition = controlNode.position + controlNode.inTangent;
+    m_handleItems[index].first->setOrigin(QPointF(inHandlePosition.x(), inHandlePosition.y()));
+    
+    QVector2D outHandlePosition = controlNode.position - controlNode.outTangent;
+    m_handleItems[index].second->setOrigin(QPointF(outHandlePosition.x(), outHandlePosition.y()));
+}
+
+void InterpolationGraphicsWidget::refreshControlNode(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    refreshControlAnchor(index);
+    refreshControlEdges(index);
+    refreshControlHandles(index);
+}
+
+void InterpolationGraphicsWidget::refreshCurve()
+{
+    QPainterPath path;
+    std::vector<HermiteControlNode> controlNodes;
+    toNormalizedControlNodes(controlNodes);
+    for (auto &item: controlNodes) {
+        item.position.setX(item.position.x() * scene()->sceneRect().width());
+        item.position.setY(item.position.y() * scene()->sceneRect().height());
+        item.inTangent.setX(item.inTangent.x() * scene()->sceneRect().width());
+        item.inTangent.setY(item.inTangent.y() * scene()->sceneRect().height());
+        item.outTangent.setX(item.outTangent.x() * scene()->sceneRect().width());
+        item.outTangent.setY(item.outTangent.y() * scene()->sceneRect().height());
+    }
+    hermiteCurveToPainterPath(controlNodes, path);
+    m_pathItem->setPath(path);
+}
+
+void InterpolationGraphicsWidget::refreshKeyframeKnot(int index)
+{
+    if (index >= (int)m_keyframes.size())
+        return;
+    
+    std::vector<HermiteControlNode> controlNodes;
+    toNormalizedControlNodes(controlNodes);
+    if (controlNodes.size() < 2)
+        return;
+    
+    if (scene()->sceneRect().width() <= 0)
+        return;
+    
+    const auto &knot = m_keyframes[index].first;
+    QVector2D interpolatedPosition = calculateHermiteInterpolation(controlNodes, knot);
+    
+    if (nullptr == m_keyframeKnotItems[index]) {
+        m_keyframeKnotItems[index] = new InterpolationGraphicsKeyframeItem;
+        scene()->addItem(m_keyframeKnotItems[index]);
+    }
+    
+    QPointF knotPos = QPointF(interpolatedPosition.x() * scene()->sceneRect().width(),
+        interpolatedPosition.y() * scene()->sceneRect().height());
+    m_keyframeKnotItems[index]->setPos(knotPos);
+}
+
+void InterpolationGraphicsWidget::refreshKeyframeLabel(int index)
+{
+    if (index >= (int)m_keyframes.size())
+        return;
+    
+    std::vector<HermiteControlNode> controlNodes;
+    toNormalizedControlNodes(controlNodes);
+    if (controlNodes.size() < 2)
+        return;
+    
+    if (scene()->sceneRect().width() <= 0)
+        return;
+    
+    const auto &knot = m_keyframes[index].first;
+    QVector2D interpolatedPosition = calculateHermiteInterpolation(controlNodes, knot);
+    
+    if (nullptr == m_keyframeNameItems[index]) {
+        InterpolationGraphicsLabelParentWidget *parentWidget = new InterpolationGraphicsLabelParentWidget;
+        parentWidget->setFlag(QGraphicsItem::ItemIsMovable, !m_previewOnly);
+        parentWidget->setFlag(QGraphicsItem::ItemSendsScenePositionChanges, !m_previewOnly);
+        parentWidget->setAutoFillBackground(true);
+        parentWidget->setZValue(1);
+        scene()->addItem(parentWidget);
+  
+        QLabel *nameLabel = new QLabel;
+        nameLabel->setFocusPolicy(Qt::NoFocus);
+        m_keyframeNameItems[index] = scene()->addWidget(nameLabel);
+        m_keyframeNameItems[index]->setParentItem(parentWidget);
+        connect(parentWidget->proxy(), &InterpolationGraphicsProxyObject::itemMoved, this, [=](QPointF point) {
+            QVector2D newKnotPosition = QVector2D(point.x(), point.y());
+            float knot = point.x() / scene()->sceneRect().width();
+            if (index - 1 >= 0 && knot < m_keyframes[index - 1].first)
+                newKnotPosition.setX(m_keyframes[index - 1].first * scene()->sceneRect().width());
+            else if (index + 1 <= (int)m_keyframes.size() - 1 && knot > m_keyframes[index + 1].first)
+                newKnotPosition.setX(m_keyframes[index + 1].first * scene()->sceneRect().width());
+            knot = newKnotPosition.x() / scene()->sceneRect().width();
+            m_keyframes[index].first = knot;
+            refreshKeyframe(index);
+            emit keyframeKnotChanged(index, knot);
+        });
+        connect(parentWidget->proxy(), &InterpolationGraphicsProxyObject::itemHoverEnter, this, [=]() {
+            hoverKeyframe(index);
+        });
+        connect(parentWidget->proxy(), &InterpolationGraphicsProxyObject::itemHoverLeave, this, [=]() {
+            unhoverKeyframe(index);
+        });
+    }
+    
+    QPointF knotPos = QPointF(interpolatedPosition.x() * scene()->sceneRect().width(),
+        interpolatedPosition.y() * scene()->sceneRect().height());
+    
+    QLabel *nameLabel = (QLabel *)m_keyframeNameItems[index]->widget();
+    nameLabel->setText(m_keyframes[index].second);
+    nameLabel->adjustSize();
+    QPointF textPos(knotPos.x(), knotPos.y());
+    InterpolationGraphicsLabelParentWidget *parentWidget = (InterpolationGraphicsLabelParentWidget *)(m_keyframeNameItems[index]->parentItem());
+    QSize sizeHint = nameLabel->sizeHint();
+    nameLabel->resize(sizeHint);
+    parentWidget->resize(sizeHint);
+    parentWidget->setPosWithoutEmitSignal(textPos);
+}
+
+void InterpolationGraphicsWidget::refreshKeyframe(int index)
+{
+    refreshKeyframeKnot(index);
+    refreshKeyframeLabel(index);
+}
+
+void InterpolationGraphicsWidget::refresh()
+{
+    refreshCurve();
+
+    for (size_t i = m_controlNodes.size(); i < m_anchorItems.size(); i++)
+        delete m_anchorItems[i];
+    m_anchorItems.resize(m_controlNodes.size());
+    
+    for (size_t i = m_controlNodes.size(); i < m_lineItems.size(); i++) {
+        delete m_lineItems[i].first;
+        delete m_lineItems[i].second;
+    }
+    m_lineItems.resize(m_controlNodes.size());
+    
+    for (size_t i = m_controlNodes.size(); i < m_handleItems.size(); i++) {
+        delete m_handleItems[i].first;
+        delete m_handleItems[i].second;
+    }
+    m_handleItems.resize(m_controlNodes.size());
+    
+    for (size_t i = 0; i < m_controlNodes.size(); i++)
+        refreshControlNode(i);
+    
+    for (size_t i = m_keyframes.size(); i < m_keyframeKnotItems.size(); i++) {
+        delete m_keyframeKnotItems[i];
+        delete m_keyframeNameItems[i]->parentItem();
+    }
+    m_keyframeKnotItems.resize(m_keyframes.size());
+    m_keyframeNameItems.resize(m_keyframes.size());
+    
+    refreshKeyframes();
+    
+    fitInView(scene()->sceneRect(), Qt::KeepAspectRatio);
+}
+
+float InterpolationGraphicsWidget::cursorKnot() const
+{
+    return m_cursorItem->pos().x() / scene()->sceneRect().width();
+}
+
+void InterpolationGraphicsWidget::refreshKeyframes()
+{
+    for (size_t i = 0; i < m_keyframes.size(); i++)
+        refreshKeyframe(i);
+}
+
+void InterpolationGraphicsWidget::mouseMoveEvent(QMouseEvent *event)
+{
+    QGraphicsView::mouseMoveEvent(event);
+}
+
+void InterpolationGraphicsWidget::mouseReleaseEvent(QMouseEvent *event)
+{
+    QGraphicsView::mouseReleaseEvent(event);
+}
+
+void InterpolationGraphicsWidget::mousePressEvent(QMouseEvent *event)
+{
+    QGraphicsView::mousePressEvent(event);
+    
+    if (m_previewOnly)
+        return;
+    
+    if (event->button() == Qt::LeftButton) {
+        auto cursorPos = mapToScene(event->pos());
+        cursorPos.setY(0);
+        m_cursorItem->updateCursorPosition(cursorPos);
+    }
+    
+    if (event->button() == Qt::LeftButton ||
+            event->button() == Qt::RightButton) {
+        selectControlNode(m_currentHoveringControlIndex);
+        selectKeyframe(m_currentHoveringKeyframeIndex);
+    }
+    
+    if (event->button() == Qt::RightButton) {
+        showContextMenu(mapFromGlobal(event->globalPos()));
+    }
+}
+
+void InterpolationGraphicsWidget::deleteControlNode(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    invalidateControlSelection();
+    
+    m_controlNodes.erase(m_controlNodes.begin() + index);
+    refresh();
+    
+    emit controlNodesChanged();
+}
+
+void InterpolationGraphicsWidget::deleteKeyframe(int index)
+{
+    if (index >= (int)m_keyframes.size())
+        return;
+    
+    emit removeKeyframe(index);
+}
+
+void InterpolationGraphicsWidget::addControlNodeAfter(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    invalidateControlSelection();
+    
+    const auto &current = m_controlNodes[index];
+    int newX = current.position.x();
+    auto inTangent = current.outTangent;
+    if (index + 1 >= (int)m_controlNodes.size()) {
+        newX = (current.position.x() + scene()->sceneRect().right()) / 2;
+    } else {
+        const auto &next = m_controlNodes[index + 1];
+        newX = (current.position.x() + next.position.x()) / 2;
+        inTangent = (current.outTangent + next.inTangent) / 2;
+    }
+    auto outTangent = inTangent;
+    
+    HermiteControlNode newNode(QVector2D(newX, current.position.y()), inTangent, outTangent);
+    m_controlNodes.insert(m_controlNodes.begin() + index + 1, newNode);
+    refresh();
+    
+    emit controlNodesChanged();
+}
+
+void InterpolationGraphicsWidget::addControlNodeBefore(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    invalidateControlSelection();
+    
+    const auto &current = m_controlNodes[index];
+    int newX = current.position.x();
+    auto inTangent = current.outTangent;
+    if (index - 1 < 0) {
+        newX = (current.position.x() + scene()->sceneRect().left()) / 2;
+    } else {
+        const auto &previous= m_controlNodes[index - 1];
+        newX = (current.position.x() + previous.position.x()) / 2;
+        inTangent = (current.inTangent + previous.outTangent) / 2;
+    }
+    auto outTangent = inTangent;
+    
+    HermiteControlNode newNode(QVector2D(newX, current.position.y()), inTangent, outTangent);
+    m_controlNodes.insert(m_controlNodes.begin() + index, newNode);
+    refresh();
+    
+    emit controlNodesChanged();
+}
+
+void InterpolationGraphicsWidget::invalidateControlSelection()
+{
+    m_currentHoveringControlIndex = -1;
+    if (-1 != m_currentSelectedControlIndex)
+        selectControlNode(-1);
+}
+
+void InterpolationGraphicsWidget::invalidateKeyframeSelection()
+{
+    m_currentHoveringKeyframeIndex = -1;
+    if (-1 != m_currentSelectedKeyframeIndex)
+        selectKeyframe(-1);
+}
+
+void InterpolationGraphicsWidget::addControlNodeAtPosition(const QPointF &pos)
+{
+    auto inTangent = QVector2D(0, 50);
+    auto outTangent = inTangent;
+    HermiteControlNode newNode(QVector2D(pos.x(), pos.y()), inTangent, outTangent);
+    
+    invalidateControlSelection();
+    
+    m_controlNodes.insert(m_controlNodes.end(), newNode);
+    refresh();
+    
+    emit controlNodesChanged();
+}
+
+void InterpolationGraphicsWidget::hoverControlNode(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    if (m_currentHoveringControlIndex == index)
+        return;
+    
+    m_currentHoveringControlIndex = index;
+}
+
+void InterpolationGraphicsWidget::unhoverControlNode(int index)
+{
+    if (index >= (int)m_controlNodes.size())
+        return;
+    
+    if (m_currentHoveringControlIndex == index) {
+        m_currentHoveringControlIndex = -1;
+    }
+}
+
+void InterpolationGraphicsWidget::hoverKeyframe(int index)
+{
+    if (index >= (int)m_keyframes.size())
+        return;
+    
+    if (m_currentHoveringKeyframeIndex == index)
+        return;
+    
+    m_currentHoveringKeyframeIndex = index;
+    
+    QLabel *nameLabel = (QLabel *)m_keyframeNameItems[m_currentHoveringKeyframeIndex]->widget();
+    nameLabel->setStyleSheet("QLabel {color : " + Theme::red.name() + ";}");
+}
+
+void InterpolationGraphicsWidget::unhoverKeyframe(int index)
+{
+    if (index >= (int)m_keyframes.size())
+        return;
+    
+    if (m_currentHoveringKeyframeIndex == index) {
+        if (m_currentSelectedKeyframeIndex != m_currentHoveringKeyframeIndex) {
+            QLabel *nameLabel = (QLabel *)m_keyframeNameItems[m_currentHoveringKeyframeIndex]->widget();
+            nameLabel->setStyleSheet("QLabel {color : " + Theme::white.name() + ";}");
+        }
+        m_currentHoveringKeyframeIndex = -1;
+    }
+}
+
+void InterpolationGraphicsWidget::selectKeyframe(int index)
+{
+    if (m_currentSelectedKeyframeIndex == index)
+        return;
+    
+    if (-1 != m_currentSelectedKeyframeIndex && m_currentSelectedKeyframeIndex < (int)m_keyframes.size()) {
+        QLabel *nameLabel = (QLabel *)m_keyframeNameItems[m_currentSelectedKeyframeIndex]->widget();
+        nameLabel->setStyleSheet("QLabel {color : " + Theme::white.name() + ";}");
+    }
+    
+    m_currentSelectedKeyframeIndex = index;
+    
+    if (-1 != m_currentSelectedKeyframeIndex && m_currentSelectedKeyframeIndex < (int)m_keyframes.size()) {
+        QLabel *nameLabel = (QLabel *)m_keyframeNameItems[m_currentSelectedKeyframeIndex]->widget();
+        nameLabel->setStyleSheet("QLabel {color : " + Theme::red.name() + ";}");
+    }
+}
+
+void InterpolationGraphicsWidget::selectControlNode(int index)
+{
+    if (m_currentSelectedControlIndex == index)
+        return;
+    
+    if (-1 != m_currentSelectedControlIndex && m_currentSelectedControlIndex < (int)m_controlNodes.size()) {
+        m_anchorItems[m_currentSelectedControlIndex]->setChecked(false);
+        m_handleItems[m_currentSelectedControlIndex].first->setChecked(false);
+        m_handleItems[m_currentSelectedControlIndex].second->setChecked(false);
+    }
+    
+    m_currentSelectedControlIndex = index;
+    
+    if (-1 != m_currentSelectedControlIndex && m_currentSelectedControlIndex < (int)m_controlNodes.size()) {
+        m_anchorItems[m_currentSelectedControlIndex]->setChecked(true);
+        m_handleItems[m_currentSelectedControlIndex].first->setChecked(true);
+        m_handleItems[m_currentSelectedControlIndex].second->setChecked(true);
+    }
+}
+
+void InterpolationGraphicsWidget::showContextMenu(const QPoint &pos)
+{
+    if (m_previewOnly)
+        return;
+    
+    QMenu contextMenu(this);
+    
+    QAction addAction(tr("Add Control Node"), this);
+    QAction addAfterAction(tr("Add Control Node After"), this);
+    QAction addBeforeAction(tr("Add Control Node Before"), this);
+    if (-1 != m_currentSelectedControlIndex) {
+        connect(&addAfterAction, &QAction::triggered, this, [=]() {
+            addControlNodeAfter(m_currentSelectedControlIndex);
+        });
+        contextMenu.addAction(&addAfterAction);
+        
+        connect(&addBeforeAction, &QAction::triggered, this, [=]() {
+            addControlNodeBefore(m_currentSelectedControlIndex);
+        });
+        contextMenu.addAction(&addBeforeAction);
+    } else if (m_controlNodes.empty()) {
+        connect(&addAction, &QAction::triggered, this, [=]() {
+            addControlNodeAtPosition(mapToScene(pos));
+        });
+        contextMenu.addAction(&addAction);
+    }
+    
+    QAction deleteControlNodeAction(tr("Delete Control Node"), this);
+    if (-1 != m_currentSelectedControlIndex) {
+        connect(&deleteControlNodeAction, &QAction::triggered, this, [=]() {
+            deleteControlNode(m_currentSelectedControlIndex);
+        });
+        contextMenu.addAction(&deleteControlNodeAction);
+    }
+    
+    QAction deleteKeyframeAction(tr("Delete Keyframe"), this);
+    if (-1 != m_currentSelectedKeyframeIndex) {
+        connect(&deleteKeyframeAction, &QAction::triggered, this, [=]() {
+            deleteKeyframe(m_currentSelectedKeyframeIndex);
+        });
+        contextMenu.addAction(&deleteKeyframeAction);
+    }
+    
+    contextMenu.exec(mapToGlobal(pos));
+}
+
+void InterpolationGraphicsWidget::setPreviewOnly(bool previewOnly)
+{
+    if (m_previewOnly == previewOnly)
+        return;
+    m_previewOnly = previewOnly;
+    m_cursorItem->setVisible(!m_previewOnly);
+}

src/interpolationgraphicswidget.h

@@ -0,0 +1,302 @@
+#ifndef INTERPOLATION_GRAPHICS_WIDGET_H
+#define INTERPOLATION_GRAPHICS_WIDGET_H
+#include <QGraphicsView>
+#include <QBrush>
+#include <QPen>
+#include <QGraphicsItemGroup>
+#include <QGraphicsEllipseItem>
+#include <QGraphicsLineItem>
+#include <QPointF>
+#include <QResizeEvent>
+#include <QGraphicsSceneHoverEvent>
+#include <QGraphicsProxyWidget>
+#include <QGraphicsWidget>
+#include "curveutil.h"
+#include "theme.h"
+
+class InterpolationGraphicsProxyObject : public QObject
+{
+    Q_OBJECT
+signals:
+    void itemMoved(QPointF point);
+    void itemHoverEnter();
+    void itemHoverLeave();
+};
+
+class InterpolationGraphicsCircleItem : public QGraphicsEllipseItem
+{
+public:
+    InterpolationGraphicsCircleItem(float toRadius, bool limitMoveRange=true) :
+        m_limitMoveRange(limitMoveRange)
+    {
+        setAcceptHoverEvents(true);
+        setRect(QRectF(-toRadius, -toRadius, toRadius * 2, toRadius * 2));
+        updateAppearance();
+    }
+    ~InterpolationGraphicsCircleItem()
+    {
+        delete m_object;
+    }
+    InterpolationGraphicsProxyObject *proxy()
+    {
+        return m_object;
+    }
+    void setOrigin(QPointF point)
+    {
+        m_disableEmitSignal = true;
+        setPos(point.x(), point.y());
+        m_disableEmitSignal = false;
+    }
+    QPointF origin()
+    {
+        return QPointF(pos().x(), pos().y());
+    }
+    float radius()
+    {
+        return rect().width() / 2;
+    }
+    void setChecked(bool checked)
+    {
+        m_checked = checked;
+        updateAppearance();
+    }
+protected:
+    virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value) override
+    {
+        switch (change) {
+        case ItemPositionHasChanged:
+            {
+                QPointF newPos = value.toPointF();
+                if (m_limitMoveRange) {
+                    QRectF rect = scene()->sceneRect();
+                    if (!rect.contains(newPos)) {
+                        newPos.setX(qMin(rect.right(), qMax(newPos.x(), rect.left())));
+                        newPos.setY(qMin(rect.bottom(), qMax(newPos.y(), rect.top())));
+                    }
+                }
+                if (!m_disableEmitSignal)
+                    emit m_object->itemMoved(newPos);
+                return newPos;
+            }
+            break;
+        default:
+            break;
+        };
+        return QGraphicsItem::itemChange(change, value);
+    }
+    virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override
+    {
+        QGraphicsItem::hoverEnterEvent(event);
+        m_hovered = true;
+        updateAppearance();
+        emit m_object->itemHoverEnter();
+    }
+    virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override
+    {
+        QGraphicsItem::hoverLeaveEvent(event);
+        m_hovered = false;
+        updateAppearance();
+        emit m_object->itemHoverLeave();
+    }
+private:
+    InterpolationGraphicsProxyObject *m_object = new InterpolationGraphicsProxyObject();
+    bool m_hovered = false;
+    bool m_checked = false;
+    bool m_limitMoveRange = true;
+    bool m_disableEmitSignal = false;
+    void updateAppearance()
+    {
+        QColor color = Theme::white;
+        if (m_hovered || m_checked) {
+            setBrush(color);
+        } else {
+            setBrush(Qt::transparent);
+        }
+        QPen pen;
+        pen.setWidth(0);
+        pen.setColor(color);
+        setPen(pen);
+    }
+};
+
+class InterpolationGraphicsEdgeItem : public QGraphicsLineItem
+{
+public:
+    InterpolationGraphicsEdgeItem()
+    {
+        QPen linePen;
+        linePen.setColor(Theme::white);
+        linePen.setWidth(0);
+        setPen(linePen);
+    }
+};
+
+class InterpolationGraphicsLabelParentWidget : public QGraphicsWidget
+{
+public:
+    InterpolationGraphicsLabelParentWidget()
+    {
+        setAcceptHoverEvents(true);
+    }
+    ~InterpolationGraphicsLabelParentWidget()
+    {
+        delete m_object;
+    }
+    InterpolationGraphicsProxyObject *proxy()
+    {
+        return m_object;
+    }
+    void setPosWithoutEmitSignal(QPointF pos)
+    {
+        m_disableEmitSignal = true;
+        setPos(pos);
+        m_disableEmitSignal = false;
+    }
+protected:
+    virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value) override
+    {
+        switch (change) {
+        case ItemPositionHasChanged:
+            {
+                QPointF newPos = value.toPointF();
+                QRectF rect = scene()->sceneRect();
+                if (!rect.contains(newPos)) {
+                    newPos.setX(qMin(rect.right(), qMax(newPos.x(), rect.left())));
+                    newPos.setY(qMin(rect.bottom(), qMax(newPos.y(), rect.top())));
+                }
+                if (!m_disableEmitSignal)
+                    emit m_object->itemMoved(newPos);
+                return newPos;
+            }
+            break;
+        default:
+            break;
+        };
+        return QGraphicsItem::itemChange(change, value);
+    }
+    virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override
+    {
+        QGraphicsWidget::hoverEnterEvent(event);
+        emit m_object->itemHoverEnter();
+    }
+    virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override
+    {
+        QGraphicsWidget::hoverLeaveEvent(event);
+        emit m_object->itemHoverLeave();
+    }
+private:
+    InterpolationGraphicsProxyObject *m_object = new InterpolationGraphicsProxyObject();
+    bool m_disableEmitSignal = false;
+};
+
+class InterpolationGraphicsCursorItem : public QGraphicsRectItem
+{
+public:
+    InterpolationGraphicsCursorItem()
+    {
+        QPen linePen;
+        linePen.setColor(Theme::red);
+        linePen.setWidth(0);
+        setPen(linePen);
+    }
+    void updateCursorPosition(const QPointF &pos)
+    {
+        QPointF newPos = pos;
+        QRectF rect = scene()->sceneRect();
+        if (!rect.contains(newPos)) {
+            newPos.setX(qMin(rect.right(), qMax(newPos.x(), rect.left())));
+            newPos.setY(qMin(rect.bottom(), qMax(newPos.y(), rect.top())));
+        }
+        setPos(newPos);
+    }
+};
+
+class InterpolationGraphicsKeyframeItem : public QGraphicsRectItem
+{
+public:
+    InterpolationGraphicsKeyframeItem()
+    {
+        QPen linePen;
+        linePen.setColor(Theme::red);
+        linePen.setWidth(0);
+        setPen(linePen);
+        
+        setBrush(QBrush(Theme::red));
+        
+        setRect(-4, -4, 8, 8);
+    }
+};
+
+class InterpolationGraphicsWidget : public QGraphicsView
+{
+    Q_OBJECT
+signals:
+    void controlNodesChanged();
+    void keyframeKnotChanged(int index, float knot);
+    void removeKeyframe(int index);
+public:
+    InterpolationGraphicsWidget(QWidget *parent=nullptr);
+    void toNormalizedControlNodes(std::vector<HermiteControlNode> &snapshot);
+    void fromNormalizedControlNodes(const std::vector<HermiteControlNode> &snapshot);
+    float cursorKnot() const;
+public slots:
+    void setControlNodes(const std::vector<HermiteControlNode> &nodes);
+    void setKeyframes(const std::vector<std::pair<float, QString>> &keyframes);
+    void refresh();
+    void refreshControlNode(int index);
+    void refreshControlAnchor(int index);
+    void refreshControlEdges(int index);
+    void refreshControlHandles(int index);
+    void refreshCurve();
+    void refreshKeyframe(int index);
+    void refreshKeyframeKnot(int index);
+    void refreshKeyframeLabel(int index);
+    void refreshKeyframes();
+    void showContextMenu(const QPoint &pos);
+    void deleteControlNode(int index);
+    void deleteKeyframe(int index);
+    void addControlNodeAfter(int index);
+    void addControlNodeBefore(int index);
+    void addControlNodeAtPosition(const QPointF &pos);
+    void hoverControlNode(int index);
+    void unhoverControlNode(int index);
+    void selectControlNode(int index);
+    void selectKeyframe(int index);
+    void hoverKeyframe(int index);
+    void unhoverKeyframe(int index);
+    void invalidateControlSelection();
+    void invalidateKeyframeSelection();
+    void setPreviewOnly(bool previewOnly);
+protected:
+    virtual void resizeEvent(QResizeEvent *event) override;
+    virtual void mouseMoveEvent(QMouseEvent *event) override;
+    virtual void mouseReleaseEvent(QMouseEvent *event) override;
+    virtual void mousePressEvent(QMouseEvent *event) override;
+private:
+    std::vector<HermiteControlNode> m_controlNodes;
+    std::vector<std::pair<float, QString>> m_keyframes;
+    QGraphicsPathItem *m_pathItem = nullptr;
+    std::vector<InterpolationGraphicsCircleItem *> m_anchorItems;
+    std::vector<std::pair<InterpolationGraphicsEdgeItem *, InterpolationGraphicsEdgeItem *>> m_lineItems;
+    std::vector<std::pair<InterpolationGraphicsCircleItem *, InterpolationGraphicsCircleItem *>> m_handleItems;
+    std::vector<QGraphicsLineItem *> m_gridRowLineItems;
+    std::vector<QGraphicsLineItem *> m_gridColumnLineItems;
+    std::vector<InterpolationGraphicsKeyframeItem *> m_keyframeKnotItems;
+    std::vector<QGraphicsProxyWidget *> m_keyframeNameItems;
+    InterpolationGraphicsCursorItem *m_cursorItem = nullptr;
+    bool m_gridEnabled = true;
+    int m_currentHoveringControlIndex = -1;
+    int m_currentSelectedControlIndex = -1;
+    int m_currentHoveringKeyframeIndex = -1;
+    int m_currentSelectedKeyframeIndex = -1;
+    bool m_previewOnly = false;
+    static const float m_anchorRadius;
+    static const float m_handleRadius;
+    static const int m_gridColumns;
+    static const int m_gridRows;
+    static const int m_sceneWidth;
+    static const int m_sceneHeight;
+    static const float m_tangentMagnitudeScaleFactor;
+};
+
+#endif

src/jointnodetree.cpp

@@ -1,4 +1,5 @@
 #include "jointnodetree.h"
+#include "dust3dutil.h"
 
 const std::vector<JointNode> &JointNodeTree::nodes() const
 {
@@ -72,3 +73,15 @@ JointNodeTree::JointNodeTree(const std::vector<AutoRiggerBone> *resultRigBones)
         node.inverseBindMatrix = node.transformMatrix.inverted();
     }
 }
+
+JointNodeTree JointNodeTree::slerp(const JointNodeTree &first, const JointNodeTree &second, float t)
+{
+    JointNodeTree slerpResult = first;
+    for (decltype(first.nodes().size()) i = 0; i < first.nodes().size() && i < second.nodes().size(); i++) {
+        slerpResult.updateRotation(i,
+            quaternionOvershootSlerp(first.nodes()[i].rotation, second.nodes()[i].rotation, t));
+    }
+    slerpResult.recalculateTransformMatrices();
+    return slerpResult;
+}
+

src/jointnodetree.h

@@ -25,6 +25,7 @@ public:
     void updateRotation(int index, QQuaternion rotation);
     void reset();
     void recalculateTransformMatrices();
+    static JointNodeTree slerp(const JointNodeTree &first, const JointNodeTree &second, float t);
 private:
     std::vector<JointNode> m_boneNodes;
 };

src/motioneditwidget.cpp

@@ -0,0 +1,298 @@
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+#include <QGridLayout>
+#include <QMessageBox>
+#include <QDebug>
+#include "motioneditwidget.h"
+#include "dust3dutil.h"
+#include "poselistwidget.h"
+#include "version.h"
+
+MotionEditWidget::MotionEditWidget(const SkeletonDocument *document, QWidget *parent) :
+    QDialog(parent),
+    m_document(document)
+{
+    m_clipPlayer = new AnimationClipPlayer;
+
+    m_graphicsWidget = new InterpolationGraphicsWidget(this);
+    m_graphicsWidget->setMinimumSize(256, 128);
+    
+    connect(m_graphicsWidget, &InterpolationGraphicsWidget::controlNodesChanged, this, &MotionEditWidget::setUnsavedState);
+    connect(m_graphicsWidget, &InterpolationGraphicsWidget::controlNodesChanged, this, &MotionEditWidget::generatePreviews);
+    connect(m_graphicsWidget, &InterpolationGraphicsWidget::removeKeyframe, this, [=](int index) {
+        m_keyframes.erase(m_keyframes.begin() + index);
+        syncKeyframesToGraphicsView();
+        setUnsavedState();
+        generatePreviews();
+    });
+    connect(m_graphicsWidget, &InterpolationGraphicsWidget::keyframeKnotChanged, this, [=](int index, float knot) {
+        m_keyframes[index].first = knot;
+        setUnsavedState();
+        generatePreviews();
+    });
+    
+    m_previewWidget = new ModelWidget(this);
+    m_previewWidget->setMinimumSize(128, 128);
+    m_previewWidget->resize(384, 384);
+    m_previewWidget->move(-64, 0);
+    
+    connect(m_clipPlayer, &AnimationClipPlayer::frameReadyToShow, this, [=]() {
+        m_previewWidget->updateMesh(m_clipPlayer->takeFrameMesh());
+    });
+    
+    PoseListWidget *poseListWidget = new PoseListWidget(document);
+    poseListWidget->setCornerButtonVisible(true);
+    poseListWidget->setHasContextMenu(false);
+    QWidget *poseListContainerWidget = new QWidget;
+    QGridLayout *poseListLayoutForContainer = new QGridLayout;
+    poseListLayoutForContainer->addWidget(poseListWidget);
+    poseListContainerWidget->setLayout(poseListLayoutForContainer);
+    
+    poseListContainerWidget->resize(512, Theme::posePreviewImageSize);
+    
+    connect(poseListWidget, &PoseListWidget::cornerButtonClicked, this, [=](QUuid poseId) {
+        addKeyframe(m_graphicsWidget->cursorKnot(), poseId);
+    });
+    
+    //QLabel *interpolationTypeItemName = new QLabel(tr("Interpolation:"));
+    //QLabel *interpolationTypeValue = new QLabel(tr("Spring"));
+    
+    //QPushButton *interpolationTypeButton = new QPushButton();
+    //interpolationTypeButton->setText(tr("Browse..."));
+    
+    //QHBoxLayout *interpolationButtonsLayout = new QHBoxLayout;
+    //interpolationButtonsLayout->addStretch();
+    //interpolationButtonsLayout->addWidget(interpolationTypeItemName);
+    //interpolationButtonsLayout->addWidget(interpolationTypeValue);
+    //interpolationButtonsLayout->addWidget(interpolationTypeButton);
+    //interpolationButtonsLayout->addStretch();
+    
+    QVBoxLayout *motionEditLayout = new QVBoxLayout;
+    motionEditLayout->addWidget(poseListContainerWidget);
+    motionEditLayout->addWidget(Theme::createHorizontalLineWidget());
+    motionEditLayout->addWidget(m_graphicsWidget);
+    //motionEditLayout->addLayout(interpolationButtonsLayout);
+    
+    QHBoxLayout *topLayout = new QHBoxLayout;
+    topLayout->setContentsMargins(256, 0, 0, 0);
+    topLayout->addWidget(Theme::createVerticalLineWidget());
+    topLayout->addLayout(motionEditLayout);
+    
+    m_nameEdit = new QLineEdit;
+    connect(m_nameEdit, &QLineEdit::textChanged, this, &MotionEditWidget::setUnsavedState);
+    QPushButton *saveButton = new QPushButton(tr("Save"));
+    connect(saveButton, &QPushButton::clicked, this, &MotionEditWidget::save);
+    saveButton->setDefault(true);
+    
+    QHBoxLayout *baseInfoLayout = new QHBoxLayout;
+    baseInfoLayout->addWidget(new QLabel(tr("Name")));
+    baseInfoLayout->addWidget(m_nameEdit);
+    baseInfoLayout->addStretch();
+    baseInfoLayout->addWidget(saveButton);
+    
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addLayout(topLayout);
+    mainLayout->addWidget(Theme::createHorizontalLineWidget());
+    mainLayout->addLayout(baseInfoLayout);
+    
+    setLayout(mainLayout);
+    
+    connect(this, &MotionEditWidget::addMotion, m_document, &SkeletonDocument::addMotion);
+    connect(this, &MotionEditWidget::renameMotion, m_document, &SkeletonDocument::renameMotion);
+    connect(this, &MotionEditWidget::setMotionControlNodes, m_document, &SkeletonDocument::setMotionControlNodes);
+    connect(this, &MotionEditWidget::setMotionKeyframes, m_document, &SkeletonDocument::setMotionKeyframes);
+    
+    updateTitle();
+}
+
+MotionEditWidget::~MotionEditWidget()
+{
+    delete m_clipPlayer;
+}
+
+QSize MotionEditWidget::sizeHint() const
+{
+    return QSize(800, 600);
+}
+
+void MotionEditWidget::reject()
+{
+    close();
+}
+
+void MotionEditWidget::closeEvent(QCloseEvent *event)
+{
+    if (m_unsaved && !m_closed) {
+        QMessageBox::StandardButton answer = QMessageBox::question(this,
+            APP_NAME,
+            tr("Do you really want to close while there are unsaved changes?"),
+            QMessageBox::Yes | QMessageBox::No);
+        if (answer != QMessageBox::Yes) {
+            event->ignore();
+            return;
+        }
+    }
+    m_closed = true;
+    hide();
+    if (nullptr != m_previewsGenerator) {
+        event->ignore();
+        return;
+    }
+    event->accept();
+}
+
+void MotionEditWidget::save()
+{
+    std::vector<HermiteControlNode> controlNodes;
+    m_graphicsWidget->toNormalizedControlNodes(controlNodes);
+    if (m_motionId.isNull()) {
+        emit addMotion(m_nameEdit->text(), controlNodes, m_keyframes);
+    } else if (m_unsaved) {
+        emit renameMotion(m_motionId, m_nameEdit->text());
+        emit setMotionControlNodes(m_motionId, controlNodes);
+        emit setMotionKeyframes(m_motionId, m_keyframes);
+    }
+    m_unsaved = false;
+    close();
+}
+
+void MotionEditWidget::clearUnsaveState()
+{
+    m_unsaved = false;
+    updateTitle();
+}
+
+void MotionEditWidget::setUnsavedState()
+{
+    m_unsaved = true;
+    updateTitle();
+}
+
+void MotionEditWidget::setEditMotionId(QUuid motionId)
+{
+    if (m_motionId == motionId)
+        return;
+    
+    m_motionId = motionId;
+    updateTitle();
+}
+
+void MotionEditWidget::setEditMotionName(QString name)
+{
+    m_nameEdit->setText(name);
+    updateTitle();
+}
+
+void MotionEditWidget::updateTitle()
+{
+    if (m_motionId.isNull()) {
+        setWindowTitle(unifiedWindowTitle(tr("New") + (m_unsaved ? "*" : "")));
+        return;
+    }
+    const SkeletonMotion *motion = m_document->findMotion(m_motionId);
+    if (nullptr == motion) {
+        qDebug() << "Find motion failed:" << m_motionId;
+        return;
+    }
+    setWindowTitle(unifiedWindowTitle(motion->name + (m_unsaved ? "*" : "")));
+}
+
+void MotionEditWidget::setEditMotionControlNodes(std::vector<HermiteControlNode> controlNodes)
+{
+    m_graphicsWidget->setControlNodes(controlNodes);
+}
+
+void MotionEditWidget::syncKeyframesToGraphicsView()
+{
+    std::vector<std::pair<float, QString>> keyframesForGraphicsView;
+    for (const auto &frame: m_keyframes) {
+        QString poseName;
+        const SkeletonPose *pose = m_document->findPose(frame.second);
+        if (nullptr == pose) {
+            qDebug() << "Find pose failed:" << frame.second;
+        } else {
+            poseName = pose->name;
+        }
+        keyframesForGraphicsView.push_back({frame.first, poseName});
+    }
+    m_graphicsWidget->setKeyframes(keyframesForGraphicsView);
+}
+
+void MotionEditWidget::setEditMotionKeyframes(std::vector<std::pair<float, QUuid>> keyframes)
+{
+    m_keyframes = keyframes;
+    syncKeyframesToGraphicsView();
+}
+
+void MotionEditWidget::addKeyframe(float knot, QUuid poseId)
+{
+    m_keyframes.push_back({knot, poseId});
+    std::sort(m_keyframes.begin(), m_keyframes.end(),
+            [](const std::pair<float, QUuid> &first, const std::pair<float, QUuid> &second) {
+        return first.first < second.first;
+    });
+    syncKeyframesToGraphicsView();
+    setUnsavedState();
+    generatePreviews();
+}
+
+void MotionEditWidget::updateKeyframeKnot(int index, float knot)
+{
+    if (index < 0 || index >= (int)m_keyframes.size())
+        return;
+    m_keyframes[index].first = knot;
+    setUnsavedState();
+    generatePreviews();
+}
+
+void MotionEditWidget::generatePreviews()
+{
+    if (nullptr != m_previewsGenerator) {
+        m_isPreviewsObsolete = true;
+        return;
+    }
+    
+    m_isPreviewsObsolete = false;
+    
+    const std::vector<AutoRiggerBone> *rigBones = m_document->resultRigBones();
+    const std::map<int, AutoRiggerVertexWeights> *rigWeights = m_document->resultRigWeights();
+    
+    if (nullptr == rigBones || nullptr == rigWeights) {
+        return;
+    }
+    
+    m_previewsGenerator = new MotionPreviewsGenerator(rigBones, rigWeights,
+        m_document->currentRiggedResultContext());
+    for (const auto &pose: m_document->poseMap)
+        m_previewsGenerator->addPoseToLibrary(pose.first, pose.second.parameters);
+    //for (const auto &motion: m_document->motionMap)
+    //    m_previewsGenerator->addMotionToLibrary(motion.first, motion.second.controlNodes, motion.second.keyframes);
+    std::vector<HermiteControlNode> controlNodes;
+    m_graphicsWidget->toNormalizedControlNodes(controlNodes);
+    m_previewsGenerator->addMotionToLibrary(QUuid(), controlNodes, m_keyframes);
+    m_previewsGenerator->addPreviewRequirement(QUuid());
+    QThread *thread = new QThread;
+    m_previewsGenerator->moveToThread(thread);
+    connect(thread, &QThread::started, m_previewsGenerator, &MotionPreviewsGenerator::process);
+    connect(m_previewsGenerator, &MotionPreviewsGenerator::finished, this, &MotionEditWidget::previewsReady);
+    connect(m_previewsGenerator, &MotionPreviewsGenerator::finished, thread, &QThread::quit);
+    connect(thread, &QThread::finished, thread, &QThread::deleteLater);
+    thread->start();
+}
+
+void MotionEditWidget::previewsReady()
+{
+    auto resultPreviewMeshs = m_previewsGenerator->takeResultPreviewMeshs(QUuid());
+    m_clipPlayer->updateFrameMeshes(resultPreviewMeshs);
+
+    delete m_previewsGenerator;
+    m_previewsGenerator = nullptr;
+    
+    if (m_closed) {
+        close();
+        return;
+    }
+    
+    if (m_isPreviewsObsolete)
+        generatePreviews();
+}

src/motioneditwidget.h

@@ -0,0 +1,56 @@
+#ifndef MOTION_EDIT_WIDGET_H
+#define MOTION_EDIT_WIDGET_H
+#include <QDialog>
+#include <QLineEdit>
+#include <QCloseEvent>
+#include "skeletondocument.h"
+#include "interpolationgraphicswidget.h"
+#include "modelwidget.h"
+#include "curveutil.h"
+#include "motionpreviewsgenerator.h"
+#include "animationclipplayer.h"
+
+class MotionEditWidget : public QDialog
+{
+    Q_OBJECT
+signals:
+    void addMotion(QString name, std::vector<HermiteControlNode> controlNodes, std::vector<std::pair<float, QUuid>> keyframes);
+    void setMotionControlNodes(QUuid motionId, std::vector<HermiteControlNode> controlNodes);
+    void setMotionKeyframes(QUuid motionId, std::vector<std::pair<float, QUuid>> keyframes);
+    void renameMotion(QUuid motionId, QString name);
+public:
+    MotionEditWidget(const SkeletonDocument *document, QWidget *parent=nullptr);
+    ~MotionEditWidget();
+protected:
+    void closeEvent(QCloseEvent *event) override;
+    void reject() override;
+    QSize sizeHint() const override;
+public slots:
+    void updateTitle();
+    void save();
+    void clearUnsaveState();
+    void setEditMotionId(QUuid poseId);
+    void setEditMotionName(QString name);
+    void setEditMotionControlNodes(std::vector<HermiteControlNode> controlNodes);
+    void setEditMotionKeyframes(std::vector<std::pair<float, QUuid>> keyframes);
+    void setUnsavedState();
+    void addKeyframe(float knot, QUuid poseId);
+    void syncKeyframesToGraphicsView();
+    void generatePreviews();
+    void previewsReady();
+    void updateKeyframeKnot(int index, float knot);
+private:
+    const SkeletonDocument *m_document = nullptr;
+    InterpolationGraphicsWidget *m_graphicsWidget = nullptr;
+    ModelWidget *m_previewWidget = nullptr;
+    QUuid m_motionId;
+    QLineEdit *m_nameEdit = nullptr;
+    std::vector<std::pair<float, QUuid>> m_keyframes;
+    bool m_unsaved = false;
+    bool m_closed = false;
+    bool m_isPreviewsObsolete = false;
+    MotionPreviewsGenerator *m_previewsGenerator = nullptr;
+    AnimationClipPlayer *m_clipPlayer = nullptr;
+};
+
+#endif

src/motionlistwidget.cpp

@@ -0,0 +1,315 @@
+#include <QGuiApplication>
+#include <QMenu>
+#include <QXmlStreamWriter>
+#include <QClipboard>
+#include <QApplication>
+#include "skeletonxml.h"
+#include "motionlistwidget.h"
+
+MotionListWidget::MotionListWidget(const SkeletonDocument *document, QWidget *parent) :
+    QTreeWidget(parent),
+    m_document(document)
+{
+    setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
+    setFocusPolicy(Qt::NoFocus);
+    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    
+    setAutoScroll(false);
+    
+    setHeaderHidden(true);
+
+    QPalette palette = this->palette();
+    palette.setColor(QPalette::Window, Qt::transparent);
+    palette.setColor(QPalette::Base, Qt::transparent);
+    setPalette(palette);
+    
+    setStyleSheet("QTreeView {qproperty-indentation: 0;}");
+    
+    setContentsMargins(0, 0, 0, 0);
+    
+    connect(document, &SkeletonDocument::motionListChanged, this, &MotionListWidget::reload);
+    connect(document, &SkeletonDocument::cleanup, this, &MotionListWidget::removeAllContent);
+    
+    connect(this, &MotionListWidget::removeMotion, document, &SkeletonDocument::removeMotion);
+    
+    setContextMenuPolicy(Qt::CustomContextMenu);
+    connect(this, &QTreeWidget::customContextMenuRequested, this, &MotionListWidget::showContextMenu);
+    
+    reload();
+}
+
+void MotionListWidget::motionRemoved(QUuid motionId)
+{
+    if (m_currentSelectedMotionId == motionId)
+        m_currentSelectedMotionId = QUuid();
+    m_selectedMotionIds.erase(motionId);
+    m_itemMap.erase(motionId);
+}
+
+void MotionListWidget::updateMotionSelectState(QUuid motionId, bool selected)
+{
+    auto findItemResult = m_itemMap.find(motionId);
+    if (findItemResult == m_itemMap.end()) {
+        qDebug() << "Find motion item failed:" << motionId;
+        return;
+    }
+    MotionWidget *motionWidget = (MotionWidget *)itemWidget(findItemResult->second.first, findItemResult->second.second);
+    motionWidget->updateCheckedState(selected);
+}
+
+void MotionListWidget::selectMotion(QUuid motionId, bool multiple)
+{
+    if (multiple) {
+        if (!m_currentSelectedMotionId.isNull()) {
+            m_selectedMotionIds.insert(m_currentSelectedMotionId);
+            m_currentSelectedMotionId = QUuid();
+        }
+        if (m_selectedMotionIds.find(motionId) != m_selectedMotionIds.end()) {
+            updateMotionSelectState(motionId, false);
+            m_selectedMotionIds.erase(motionId);
+        } else {
+            updateMotionSelectState(motionId, true);
+            m_selectedMotionIds.insert(motionId);
+        }
+        if (m_selectedMotionIds.size() > 1) {
+            return;
+        }
+        if (m_selectedMotionIds.size() == 1)
+            motionId = *m_selectedMotionIds.begin();
+        else
+            motionId = QUuid();
+    }
+    if (!m_selectedMotionIds.empty()) {
+        for (const auto &id: m_selectedMotionIds) {
+            updateMotionSelectState(id, false);
+        }
+        m_selectedMotionIds.clear();
+    }
+    if (m_currentSelectedMotionId != motionId) {
+        if (!m_currentSelectedMotionId.isNull()) {
+            updateMotionSelectState(m_currentSelectedMotionId, false);
+        }
+        m_currentSelectedMotionId = motionId;
+        if (!m_currentSelectedMotionId.isNull()) {
+            updateMotionSelectState(m_currentSelectedMotionId, true);
+        }
+    }
+}
+
+void MotionListWidget::mousePressEvent(QMouseEvent *event)
+{
+    QModelIndex itemIndex = indexAt(event->pos());
+    QTreeView::mousePressEvent(event);
+    if (event->button() == Qt::LeftButton) {
+        bool multiple = QGuiApplication::queryKeyboardModifiers().testFlag(Qt::ControlModifier);
+        if (itemIndex.isValid()) {
+            QTreeWidgetItem *item = itemFromIndex(itemIndex);
+            auto motionId = QUuid(item->data(itemIndex.column(), Qt::UserRole).toString());
+            if (QGuiApplication::queryKeyboardModifiers().testFlag(Qt::ShiftModifier)) {
+                bool startAdd = false;
+                bool stopAdd = false;
+                std::vector<QUuid> waitQueue;
+                for (const auto &childId: m_document->motionIdList) {
+                    if (m_shiftStartMotionId == childId || motionId == childId) {
+                        if (startAdd) {
+                            stopAdd = true;
+                        } else {
+                            startAdd = true;
+                        }
+                    }
+                    if (startAdd)
+                        waitQueue.push_back(childId);
+                    if (stopAdd)
+                        break;
+                }
+                if (stopAdd && !waitQueue.empty()) {
+                    if (!m_selectedMotionIds.empty()) {
+                        for (const auto &id: m_selectedMotionIds) {
+                            updateMotionSelectState(id, false);
+                        }
+                        m_selectedMotionIds.clear();
+                    }
+                    if (!m_currentSelectedMotionId.isNull()) {
+                        m_currentSelectedMotionId = QUuid();
+                    }
+                    for (const auto &waitId: waitQueue) {
+                        selectMotion(waitId, true);
+                    }
+                }
+                return;
+            } else {
+                m_shiftStartMotionId = motionId;
+            }
+            selectMotion(motionId, multiple);
+            return;
+        }
+        if (!multiple)
+            selectMotion(QUuid());
+    }
+}
+
+bool MotionListWidget::isMotionSelected(QUuid motionId)
+{
+    return (m_currentSelectedMotionId == motionId ||
+        m_selectedMotionIds.find(motionId) != m_selectedMotionIds.end());
+}
+
+void MotionListWidget::showContextMenu(const QPoint &pos)
+{
+    QMenu contextMenu(this);
+    
+    std::set<QUuid> unorderedMotionIds = m_selectedMotionIds;
+    if (!m_currentSelectedMotionId.isNull())
+        unorderedMotionIds.insert(m_currentSelectedMotionId);
+    
+    std::vector<QUuid> motionIds;
+    for (const auto &cand: m_document->motionIdList) {
+        if (unorderedMotionIds.find(cand) != unorderedMotionIds.end())
+            motionIds.push_back(cand);
+    }
+    
+    QAction modifyAction(tr("Modify"), this);
+    if (motionIds.size() == 1) {
+        connect(&modifyAction, &QAction::triggered, this, [=]() {
+            emit modifyMotion(*motionIds.begin());
+        });
+        contextMenu.addAction(&modifyAction);
+    }
+    
+    QAction copyAction(tr("Copy"), this);
+    if (!motionIds.empty()) {
+        connect(&copyAction, &QAction::triggered, this, &MotionListWidget::copy);
+        contextMenu.addAction(&copyAction);
+    }
+    
+    QAction pasteAction(tr("Paste"), this);
+    if (m_document->hasPastableMotionsInClipboard()) {
+        connect(&pasteAction, &QAction::triggered, m_document, &SkeletonDocument::paste);
+        contextMenu.addAction(&pasteAction);
+    }
+    
+    QAction deleteAction(tr("Delete"), this);
+    if (!motionIds.empty()) {
+        connect(&deleteAction, &QAction::triggered, [=]() {
+            for (const auto &motionId: motionIds)
+                emit removeMotion(motionId);
+        });
+        contextMenu.addAction(&deleteAction);
+    }
+    
+    contextMenu.exec(mapToGlobal(pos));
+}
+
+void MotionListWidget::resizeEvent(QResizeEvent *event)
+{
+    QTreeWidget::resizeEvent(event);
+    if (calculateColumnCount() != columnCount())
+        reload();
+}
+
+int MotionListWidget::calculateColumnCount()
+{
+    if (nullptr == parentWidget())
+        return 0;
+    
+    int columns = parentWidget()->width() / Theme::motionPreviewImageSize;
+    if (0 == columns)
+        columns = 1;
+    return columns;
+}
+
+void MotionListWidget::reload()
+{
+    removeAllContent();
+    
+    int columns = calculateColumnCount();
+    if (0 == columns)
+        return;
+    
+    int columnWidth = parentWidget()->width() / columns;
+    
+    //qDebug() << "parentWidth:" << parentWidget()->width() << "columnWidth:" << columnWidth << "columns:" << columns;
+    
+    setColumnCount(columns);
+    for (int i = 0; i < columns; i++)
+        setColumnWidth(i, columnWidth);
+    
+    decltype(m_document->motionIdList.size()) motionIndex = 0;
+    while (motionIndex < m_document->motionIdList.size()) {
+        QTreeWidgetItem *item = new QTreeWidgetItem(this);
+        item->setFlags((item->flags() | Qt::ItemIsEnabled) & ~(Qt::ItemIsSelectable) & ~(Qt::ItemIsEditable));
+        for (int col = 0; col < columns && motionIndex < m_document->motionIdList.size(); col++, motionIndex++) {
+            const auto &motionId = m_document->motionIdList[motionIndex];
+            item->setSizeHint(col, QSize(columnWidth, MotionWidget::preferredHeight() + 2));
+            item->setData(col, Qt::UserRole, motionId.toString());
+            MotionWidget *widget = new MotionWidget(m_document, motionId);
+            connect(widget, &MotionWidget::modifyMotion, this, &MotionListWidget::modifyMotion);
+            setItemWidget(item, col, widget);
+            widget->reload();
+            widget->updateCheckedState(isMotionSelected(motionId));
+            m_itemMap[motionId] = std::make_pair(item, col);
+        }
+        invisibleRootItem()->addChild(item);
+    }
+}
+
+void MotionListWidget::removeAllContent()
+{
+    m_itemMap.clear();
+    clear();
+}
+
+bool MotionListWidget::mouseMove(QMouseEvent *event)
+{
+    return false;
+}
+
+bool MotionListWidget::wheel(QWheelEvent *event)
+{
+    return false;
+}
+
+bool MotionListWidget::mouseRelease(QMouseEvent *event)
+{
+    return false;
+}
+
+bool MotionListWidget::mousePress(QMouseEvent *event)
+{
+    if (event->button() == Qt::RightButton) {
+        showContextMenu(mapFromGlobal(event->globalPos()));
+        return false;
+    }
+    return false;
+}
+
+bool MotionListWidget::mouseDoubleClick(QMouseEvent *event)
+{
+    return false;
+}
+
+bool MotionListWidget::keyPress(QKeyEvent *event)
+{
+    return false;
+}
+
+void MotionListWidget::copy()
+{
+    if (m_selectedMotionIds.empty() && m_currentSelectedMotionId.isNull())
+        return;
+    
+    std::set<QUuid> limitMotionIds = m_selectedMotionIds;
+    if (!m_currentSelectedMotionId.isNull())
+        limitMotionIds.insert(m_currentSelectedMotionId);
+    
+    std::set<QUuid> emptySet;
+    
+    SkeletonSnapshot snapshot;
+    m_document->toSnapshot(&snapshot, emptySet, SkeletonDocumentToSnapshotFor::Motions,
+        emptySet, limitMotionIds);
+    QString snapshotXml;
+    QXmlStreamWriter xmlStreamWriter(&snapshotXml);
+    saveSkeletonToXmlStream(&snapshot, &xmlStreamWriter);
+    QClipboard *clipboard = QApplication::clipboard();
+    clipboard->setText(snapshotXml);
+}

src/motionlistwidget.h

@@ -0,0 +1,44 @@
+#ifndef MOTION_LIST_WIDGET_H
+#define MOTION_LIST_WIDGET_H
+#include <QTreeWidget>
+#include <map>
+#include "skeletondocument.h"
+#include "motionwidget.h"
+#include "skeletongraphicswidget.h"
+
+class MotionListWidget : public QTreeWidget, public SkeletonGraphicsFunctions
+{
+    Q_OBJECT
+signals:
+    void removeMotion(QUuid motionId);
+    void modifyMotion(QUuid motionId);
+public:
+    MotionListWidget(const SkeletonDocument *document, QWidget *parent=nullptr);
+    bool isMotionSelected(QUuid motionId);
+public slots:
+    void reload();
+    void removeAllContent();
+    void motionRemoved(QUuid motionId);
+    void showContextMenu(const QPoint &pos);
+    void selectMotion(QUuid motionId, bool multiple=false);
+    void copy();
+protected:
+    void resizeEvent(QResizeEvent *event) override;
+    void mousePressEvent(QMouseEvent *event) override;
+    bool mouseMove(QMouseEvent *event) override;
+    bool wheel(QWheelEvent *event) override;
+    bool mouseRelease(QMouseEvent *event) override;
+    bool mousePress(QMouseEvent *event) override;
+    bool mouseDoubleClick(QMouseEvent *event) override;
+    bool keyPress(QKeyEvent *event) override;
+private:
+    int calculateColumnCount();
+    void updateMotionSelectState(QUuid motionId, bool selected);
+    const SkeletonDocument *m_document = nullptr;
+    std::map<QUuid, std::pair<QTreeWidgetItem *, int>> m_itemMap;
+    std::set<QUuid> m_selectedMotionIds;
+    QUuid m_currentSelectedMotionId;
+    QUuid m_shiftStartMotionId;
+};
+
+#endif

src/motionmanagewidget.cpp

@@ -0,0 +1,76 @@
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+#include <QPushButton>
+#include "motionmanagewidget.h"
+#include "motioneditwidget.h"
+#include "theme.h"
+#include "infolabel.h"
+
+MotionManageWidget::MotionManageWidget(const SkeletonDocument *document, QWidget *parent) :
+    QWidget(parent),
+    m_document(document)
+{
+    QPushButton *addMotionButton = new QPushButton(Theme::awesome()->icon(fa::plus), tr("Add Motion..."));
+    addMotionButton->hide();
+    
+    connect(addMotionButton, &QPushButton::clicked, this, &MotionManageWidget::showAddMotionDialog);
+    
+    QHBoxLayout *toolsLayout = new QHBoxLayout;
+    toolsLayout->addWidget(addMotionButton);
+    
+    m_motionListWidget = new MotionListWidget(document);
+    connect(m_motionListWidget, &MotionListWidget::modifyMotion, this, &MotionManageWidget::showMotionDialog);
+    
+    InfoLabel *infoLabel = new InfoLabel;
+    infoLabel->setText(tr("Missing Rig"));
+    infoLabel->show();
+    
+    connect(m_document, &SkeletonDocument::resultRigChanged, this, [=]() {
+        if (m_document->currentRigSucceed()) {
+            infoLabel->hide();
+            addMotionButton->show();
+        } else {
+            infoLabel->show();
+            addMotionButton->hide();
+        }
+    });
+    
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addWidget(infoLabel);
+    mainLayout->addLayout(toolsLayout);
+    mainLayout->addWidget(m_motionListWidget);
+    
+    setLayout(mainLayout);
+}
+
+QSize MotionManageWidget::sizeHint() const
+{
+    return QSize(Theme::sidebarPreferredWidth, 0);
+}
+
+void MotionManageWidget::showAddMotionDialog()
+{
+    showMotionDialog(QUuid());
+}
+
+void MotionManageWidget::showMotionDialog(QUuid motionId)
+{
+    MotionEditWidget *motionEditWidget = new MotionEditWidget(m_document);
+    motionEditWidget->setAttribute(Qt::WA_DeleteOnClose);
+    if (!motionId.isNull()) {
+        const SkeletonMotion *motion = m_document->findMotion(motionId);
+        if (nullptr != motion) {
+            motionEditWidget->setEditMotionId(motionId);
+            motionEditWidget->setEditMotionName(motion->name);
+            motionEditWidget->setEditMotionControlNodes(motion->controlNodes);
+            motionEditWidget->setEditMotionKeyframes(motion->keyframes);
+            motionEditWidget->clearUnsaveState();
+            motionEditWidget->generatePreviews();
+        }
+    }
+    motionEditWidget->show();
+    connect(motionEditWidget, &QDialog::destroyed, [=]() {
+        emit unregisterDialog((QWidget *)motionEditWidget);
+    });
+    emit registerDialog((QWidget *)motionEditWidget);
+}

src/motionmanagewidget.h

@@ -0,0 +1,25 @@
+#ifndef MOTION_MANAGE_WIDGET_H
+#define MOTION_MANAGE_WIDGET_H
+#include <QWidget>
+#include "skeletondocument.h"
+#include "motionlistwidget.h"
+
+class MotionManageWidget : public QWidget
+{
+    Q_OBJECT
+signals:
+    void registerDialog(QWidget *widget);
+    void unregisterDialog(QWidget *widget);
+public:
+    MotionManageWidget(const SkeletonDocument *document, QWidget *parent=nullptr);
+protected:
+    virtual QSize sizeHint() const;
+public slots:
+    void showAddMotionDialog();
+    void showMotionDialog(QUuid motionId);
+private:
+    const SkeletonDocument *m_document = nullptr;
+    MotionListWidget *m_motionListWidget = nullptr;
+};
+
+#endif

src/motionpreviewsgenerator.cpp

@@ -0,0 +1,153 @@
+#include <QGuiApplication>
+#include <QElapsedTimer>
+#include "motionpreviewsgenerator.h"
+#include "tetrapodposer.h"
+#include "posemeshcreator.h"
+
+MotionPreviewsGenerator::MotionPreviewsGenerator(const std::vector<AutoRiggerBone> *rigBones,
+        const std::map<int, AutoRiggerVertexWeights> *rigWeights,
+        const MeshResultContext &meshResultContext) :
+    m_rigBones(*rigBones),
+    m_rigWeights(*rigWeights),
+    m_meshResultContext(meshResultContext)
+{
+}
+
+MotionPreviewsGenerator::~MotionPreviewsGenerator()
+{
+    for (auto &item: m_resultPreviewMeshs) {
+        for (auto &subItem: item.second) {
+            delete subItem.second;
+        }
+    }
+}
+
+void MotionPreviewsGenerator::addPoseToLibrary(const QUuid &poseId, const std::map<QString, std::map<QString, QString>> &parameters)
+{
+    m_poses[poseId] = parameters;
+}
+
+void MotionPreviewsGenerator::addMotionToLibrary(const QUuid &motionId, const std::vector<HermiteControlNode> &controlNodes,
+    const std::vector<std::pair<float, QUuid>> &keyframes)
+{
+    m_motions[motionId] = {controlNodes, keyframes};
+}
+
+void MotionPreviewsGenerator::addPreviewRequirement(const QUuid &motionId)
+{
+    m_requiredMotionIds.insert(motionId);
+}
+
+const std::set<QUuid> &MotionPreviewsGenerator::requiredMotionIds()
+{
+    return m_requiredMotionIds;
+}
+
+const std::set<QUuid> &MotionPreviewsGenerator::generatedMotionIds()
+{
+    return m_generatedMotionIds;
+}
+
+void MotionPreviewsGenerator::generateForMotion(const QUuid &motionId)
+{
+    auto findMotionResult = m_motions.find(motionId);
+    if (findMotionResult == m_motions.end())
+        return;
+    const std::vector<HermiteControlNode> &controlNodes = findMotionResult->second.first;
+    std::vector<std::pair<float, QUuid>> keyframes = findMotionResult->second.second;
+    if (keyframes.empty())
+        return;
+    
+    auto firstFrame = keyframes[0];
+    auto lastFrame = keyframes[keyframes.size() - 1];
+    
+    if (keyframes[0].first > 0) {
+        // Insert the last keyframe as start frame
+        keyframes.insert(keyframes.begin(), {0, lastFrame.second});
+    }
+    
+    if (keyframes[keyframes.size() - 1].first < 1) {
+        // Insert the first keyframe as stop frame
+        keyframes.push_back({1.0, firstFrame.second});
+    }
+    
+    std::vector<std::map<QString, std::map<QString, QString>>> keyframesParameters;
+    for (const auto &item: keyframes) {
+        const auto &poseId = item.second;
+        keyframesParameters.push_back(m_poses[poseId]);
+    }
+    
+    auto findLboundKeyframes = [=, &keyframes](float knot) {
+        for (decltype(keyframes.size()) i = 0; i < keyframes.size(); i++) {
+            //qDebug() << "Compare knot:" << knot << "keyframe[" << i << "] knot:" << keyframes[i].first;
+            if (knot >= keyframes[i].first && i + 1 < keyframes.size() && knot <= keyframes[i + 1].first)
+                return (int)i;
+        }
+        return -1;
+    };
+    
+    TetrapodPoser *poser = new TetrapodPoser(m_rigBones);
+    float interval = 1.0 / m_fps;
+    float lastKnot = 0;
+    for (float knot = 0; knot <= 1; knot += interval) {
+        int firstKeyframeIndex = findLboundKeyframes(knot);
+        if (-1 == firstKeyframeIndex) {
+            continue;
+        }
+        poser->parameters() = keyframesParameters[firstKeyframeIndex];
+        poser->commit();
+        auto firstKeyframeJointNodeTree = poser->resultJointNodeTree();
+        poser->reset();
+        poser->parameters() = keyframesParameters[firstKeyframeIndex + 1];
+        poser->commit();
+        auto secondKeyframeJointNodeTree = poser->resultJointNodeTree();
+        float firstKeyframeKnot = keyframes[firstKeyframeIndex].first;
+        float secondKeyframeKnot = keyframes[firstKeyframeIndex + 1].first;
+        QVector2D firstKeyframePosition = calculateHermiteInterpolation(controlNodes, firstKeyframeKnot);
+        QVector2D secondKeyframePosition = calculateHermiteInterpolation(controlNodes, secondKeyframeKnot);
+        QVector2D currentFramePosition = calculateHermiteInterpolation(controlNodes, knot);
+        float length = secondKeyframePosition.y() - firstKeyframePosition.y();
+        if (qFuzzyIsNull(length))
+            continue;
+        float t = (currentFramePosition.y() - firstKeyframePosition.y()) / length;
+        auto resultJointNodeTree = JointNodeTree::slerp(firstKeyframeJointNodeTree, secondKeyframeJointNodeTree, t);
+        
+        PoseMeshCreator *poseMeshCreator = new PoseMeshCreator(resultJointNodeTree.nodes(), m_meshResultContext, m_rigWeights);
+        poseMeshCreator->createMesh();
+        m_resultPreviewMeshs[motionId].push_back({(knot - lastKnot) * 2, poseMeshCreator->takeResultMesh()});
+        lastKnot = knot;
+        delete poseMeshCreator;
+    }
+    delete poser;
+}
+
+std::vector<std::pair<float, MeshLoader *>> MotionPreviewsGenerator::takeResultPreviewMeshs(const QUuid &motionId)
+{
+    auto findResult = m_resultPreviewMeshs.find(motionId);
+    if (findResult == m_resultPreviewMeshs.end())
+        return {};
+    auto result = findResult->second;
+    m_resultPreviewMeshs.erase(findResult);
+    return result;
+}
+
+void MotionPreviewsGenerator::generate()
+{
+    for (const auto &motionId: m_requiredMotionIds) {
+        generateForMotion(motionId);
+        m_generatedMotionIds.insert(motionId);
+    }
+}
+
+void MotionPreviewsGenerator::process()
+{
+    QElapsedTimer countTimeConsumed;
+    countTimeConsumed.start();
+    
+    generate();
+    
+    qDebug() << "The motion previews generation took" << countTimeConsumed.elapsed() << "milliseconds";
+    
+    this->moveToThread(QGuiApplication::instance()->thread());
+    emit finished();
+}

src/motionpreviewsgenerator.h

@@ -0,0 +1,45 @@
+#ifndef MOTION_PREVIEWS_GENERATOR_H
+#define MOTION_PREVIEWS_GENERATOR_H
+#include <QObject>
+#include <vector>
+#include <map>
+#include <set>
+#include "meshloader.h"
+#include "autorigger.h"
+#include "curveutil.h"
+#include "jointnodetree.h"
+
+class MotionPreviewsGenerator : public QObject
+{
+    Q_OBJECT
+public:
+    MotionPreviewsGenerator(const std::vector<AutoRiggerBone> *rigBones,
+        const std::map<int, AutoRiggerVertexWeights> *rigWeights,
+        const MeshResultContext &meshResultContext);
+    ~MotionPreviewsGenerator();
+    void addPoseToLibrary(const QUuid &poseId, const std::map<QString, std::map<QString, QString>> &parameters);
+    void addMotionToLibrary(const QUuid &motionId, const std::vector<HermiteControlNode> &controlNodes,
+        const std::vector<std::pair<float, QUuid>> &keyframes);
+    void addPreviewRequirement(const QUuid &motionId);
+    std::vector<std::pair<float, MeshLoader *>> takeResultPreviewMeshs(const QUuid &motionId);
+    const std::set<QUuid> &requiredMotionIds();
+    const std::set<QUuid> &generatedMotionIds();
+    void generateForMotion(const QUuid &motionId);
+    void generate();
+signals:
+    void finished();
+public slots:
+    void process();
+private:
+    std::vector<AutoRiggerBone> m_rigBones;
+    std::map<int, AutoRiggerVertexWeights> m_rigWeights;
+    MeshResultContext m_meshResultContext;
+    std::map<QUuid, std::map<QString, std::map<QString, QString>>> m_poses;
+    std::map<QUuid, std::pair<std::vector<HermiteControlNode>, std::vector<std::pair<float, QUuid>>>> m_motions;
+    std::set<QUuid> m_requiredMotionIds;
+    std::set<QUuid> m_generatedMotionIds;
+    std::map<QUuid, std::vector<std::pair<float, MeshLoader *>>> m_resultPreviewMeshs;
+    int m_fps = 24;
+};
+
+#endif

src/motionwidget.cpp

@@ -0,0 +1,104 @@
+#include <QVBoxLayout>
+#include "motionwidget.h"
+
+MotionWidget::MotionWidget(const SkeletonDocument *document, QUuid motionId) :
+    m_motionId(motionId),
+    m_document(document)
+{
+    setObjectName("MotionFrame");
+
+    m_previewWidget = new InterpolationGraphicsWidget(this);
+    m_previewWidget->setFixedSize(Theme::motionPreviewImageSize, Theme::motionPreviewImageSize);
+    m_previewWidget->setPreviewOnly(true);
+    
+    m_nameLabel = new QLabel;
+    m_nameLabel->setAlignment(Qt::AlignCenter);
+    m_nameLabel->setStyleSheet("background: qlineargradient(x1:0.5 y1:-15.5, x2:0.5 y2:1, stop:0 " + Theme::white.name() + ", stop:1 #252525);");
+    
+    QFont nameFont;
+    nameFont.setWeight(QFont::Light);
+    nameFont.setPixelSize(9);
+    nameFont.setBold(false);
+    m_nameLabel->setFont(nameFont);
+    
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->setContentsMargins(0, 0, 0, 0);
+    mainLayout->addStretch();
+    mainLayout->addWidget(m_nameLabel);
+    
+    setLayout(mainLayout);
+    
+    setFixedSize(Theme::motionPreviewImageSize, MotionWidget::preferredHeight());
+    
+    connect(document, &SkeletonDocument::motionNameChanged, this, &MotionWidget::updateName);
+    connect(document, &SkeletonDocument::motionControlNodesChanged, this, &MotionWidget::updatePreview);
+    connect(document, &SkeletonDocument::motionKeyframesChanged, this, &MotionWidget::updatePreview);
+}
+
+void MotionWidget::resizeEvent(QResizeEvent *event)
+{
+    QWidget::resizeEvent(event);
+    m_previewWidget->move((width() - Theme::motionPreviewImageSize) / 2, 0);
+}
+
+int MotionWidget::preferredHeight()
+{
+    return Theme::motionPreviewImageSize;
+}
+
+void MotionWidget::reload()
+{
+    updatePreview();
+    updateName();
+}
+
+void MotionWidget::updatePreview()
+{
+    const SkeletonMotion *motion = m_document->findMotion(m_motionId);
+    if (!motion) {
+        qDebug() << "Motion not found:" << m_motionId;
+        return;
+    }
+    std::vector<std::pair<float, QString>> keyframesForGraphicsView;
+    for (const auto &frame: motion->keyframes) {
+        QString poseName;
+        const SkeletonPose *pose = m_document->findPose(frame.second);
+        if (nullptr == pose) {
+            qDebug() << "Find pose failed:" << frame.second;
+        } else {
+            poseName = pose->name;
+        }
+        keyframesForGraphicsView.push_back({frame.first, poseName});
+    }
+    m_previewWidget->setControlNodes(motion->controlNodes);
+    m_previewWidget->setKeyframes(keyframesForGraphicsView);
+}
+
+void MotionWidget::updateName()
+{
+    const SkeletonMotion *motion = m_document->findMotion(m_motionId);
+    if (!motion) {
+        qDebug() << "Motion not found:" << m_motionId;
+        return;
+    }
+    m_nameLabel->setText(motion->name);
+}
+
+void MotionWidget::updateCheckedState(bool checked)
+{
+    if (checked)
+        setStyleSheet("#MotionFrame {border: 1px solid " + Theme::red.name() + ";}");
+    else
+        setStyleSheet("#MotionFrame {border: 1px solid transparent;}");
+}
+
+InterpolationGraphicsWidget *MotionWidget::previewWidget()
+{
+    return m_previewWidget;
+}
+
+void MotionWidget::mouseDoubleClickEvent(QMouseEvent *event)
+{
+    QFrame::mouseDoubleClickEvent(event);
+    emit modifyMotion(m_motionId);
+}

src/motionwidget.h

@@ -0,0 +1,33 @@
+#ifndef MOTION_WIDGET_H
+#define MOTION_WIDGET_H
+#include <QFrame>
+#include <QLabel>
+#include <QIcon>
+#include "skeletondocument.h"
+#include "interpolationgraphicswidget.h"
+
+class MotionWidget : public QFrame
+{
+    Q_OBJECT
+signals:
+    void modifyMotion(QUuid motionId);
+public:
+    MotionWidget(const SkeletonDocument *document, QUuid motionId);
+    static int preferredHeight();
+    InterpolationGraphicsWidget *previewWidget();
+protected:
+    void mouseDoubleClickEvent(QMouseEvent *event) override;
+    void resizeEvent(QResizeEvent *event) override;
+public slots:
+    void reload();
+    void updatePreview();
+    void updateName();
+    void updateCheckedState(bool checked);
+private:
+    QUuid m_motionId;
+    const SkeletonDocument *m_document = nullptr;
+    InterpolationGraphicsWidget *m_previewWidget = nullptr;
+    QLabel *m_nameLabel = nullptr;
+};
+
+#endif

src/poselistwidget.cpp

@@ -55,6 +55,9 @@ void PoseListWidget::updatePoseSelectState(QUuid poseId, bool selected)
     }
     PoseWidget *poseWidget = (PoseWidget *)itemWidget(findItemResult->second.first, findItemResult->second.second);
     poseWidget->updateCheckedState(selected);
+    if (m_cornerButtonVisible) {
+        poseWidget->setCornerButtonVisible(selected);
+    }
 }
 
 void PoseListWidget::selectPose(QUuid poseId, bool multiple)
@@ -156,6 +159,9 @@ bool PoseListWidget::isPoseSelected(QUuid poseId)
 
 void PoseListWidget::showContextMenu(const QPoint &pos)
 {
+    if (!m_hasContextMenu)
+        return;
+    
     QMenu contextMenu(this);
     
     std::set<QUuid> unorderedPoseIds = m_selectedPoseIds;
@@ -244,6 +250,7 @@ void PoseListWidget::reload()
             item->setData(col, Qt::UserRole, poseId.toString());
             PoseWidget *widget = new PoseWidget(m_document, poseId);
             connect(widget, &PoseWidget::modifyPose, this, &PoseListWidget::modifyPose);
+            connect(widget, &PoseWidget::cornerButtonClicked, this, &PoseListWidget::cornerButtonClicked);
             widget->previewWidget()->setGraphicsFunctions(this);
             setItemWidget(item, col, widget);
             widget->reload();
@@ -254,6 +261,16 @@ void PoseListWidget::reload()
     }
 }
 
+void PoseListWidget::setCornerButtonVisible(bool visible)
+{
+    m_cornerButtonVisible = visible;
+}
+
+void PoseListWidget::setHasContextMenu(bool hasContextMenu)
+{
+    m_hasContextMenu = hasContextMenu;
+}
+
 void PoseListWidget::removeAllContent()
 {
     m_itemMap.clear();

src/poselistwidget.h

@@ -12,6 +12,7 @@ class PoseListWidget : public QTreeWidget, public SkeletonGraphicsFunctions
 signals:
     void removePose(QUuid poseId);
     void modifyPose(QUuid poseId);
+    void cornerButtonClicked(QUuid poseId);
 public:
     PoseListWidget(const SkeletonDocument *document, QWidget *parent=nullptr);
     bool isPoseSelected(QUuid poseId);
@@ -22,15 +23,17 @@ public slots:
     void showContextMenu(const QPoint &pos);
     void selectPose(QUuid poseId, bool multiple=false);
     void copy();
+    void setCornerButtonVisible(bool visible);
+    void setHasContextMenu(bool hasContextMenu);
 protected:
     void resizeEvent(QResizeEvent *event) override;
     void mousePressEvent(QMouseEvent *event) override;
-    bool mouseMove(QMouseEvent *event);
+    bool mouseMove(QMouseEvent *event) override;
-    bool wheel(QWheelEvent *event);
+    bool wheel(QWheelEvent *event) override;
-    bool mouseRelease(QMouseEvent *event);
+    bool mouseRelease(QMouseEvent *event) override;
-    bool mousePress(QMouseEvent *event);
+    bool mousePress(QMouseEvent *event) override;
-    bool mouseDoubleClick(QMouseEvent *event);
+    bool mouseDoubleClick(QMouseEvent *event) override;
-    bool keyPress(QKeyEvent *event);
+    bool keyPress(QKeyEvent *event) override;
 private:
     int calculateColumnCount();
     void updatePoseSelectState(QUuid poseId, bool selected);
@@ -39,6 +42,8 @@ private:
     std::set<QUuid> m_selectedPoseIds;
     QUuid m_currentSelectedPoseId;
     QUuid m_shiftStartPoseId;
+    bool m_cornerButtonVisible = false;
+    bool m_hasContextMenu = true;
 };
 
 #endif

src/posemanagewidget.cpp

@@ -4,12 +4,14 @@
 #include "posemanagewidget.h"
 #include "theme.h"
 #include "poseeditwidget.h"
+#include "infolabel.h"
 
 PoseManageWidget::PoseManageWidget(const SkeletonDocument *document, QWidget *parent) :
     QWidget(parent),
     m_document(document)
 {
     QPushButton *addPoseButton = new QPushButton(Theme::awesome()->icon(fa::plus), tr("Add Pose..."));
+    addPoseButton->hide();
     
     connect(addPoseButton, &QPushButton::clicked, this, &PoseManageWidget::showAddPoseDialog);
     
@@ -19,7 +21,22 @@ PoseManageWidget::PoseManageWidget(const SkeletonDocument *document, QWidget *pa
     m_poseListWidget = new PoseListWidget(document);
     connect(m_poseListWidget, &PoseListWidget::modifyPose, this, &PoseManageWidget::showPoseDialog);
     
+    InfoLabel *infoLabel = new InfoLabel;
+    infoLabel->setText(tr("Missing Rig"));
+    infoLabel->show();
+    
+    connect(m_document, &SkeletonDocument::resultRigChanged, this, [=]() {
+        if (m_document->currentRigSucceed()) {
+            infoLabel->hide();
+            addPoseButton->show();
+        } else {
+            infoLabel->show();
+            addPoseButton->hide();
+        }
+    });
+    
     QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addWidget(infoLabel);
     mainLayout->addLayout(toolsLayout);
     mainLayout->addWidget(m_poseListWidget);
     

src/posemeshcreator.cpp

@@ -2,10 +2,10 @@
 #include "posemeshcreator.h"
 #include "skinnedmeshcreator.h"
 
-PoseMeshCreator::PoseMeshCreator(const Poser &poser,
+PoseMeshCreator::PoseMeshCreator(const std::vector<JointNode> &resultNodes,
         const MeshResultContext &meshResultContext,
         const std::map<int, AutoRiggerVertexWeights> &resultWeights) :
-    m_resultNodes(poser.resultNodes()),
+    m_resultNodes(resultNodes),
     m_meshResultContext(meshResultContext),
     m_resultWeights(resultWeights)
 {

src/posemeshcreator.h

@@ -1,7 +1,6 @@
 #ifndef POSE_MESH_CREATOR_H
 #define POSE_MESH_CREATOR_H
 #include <QObject>
-#include "poser.h"
 #include "meshloader.h"
 #include "jointnodetree.h"
 #include "meshresultcontext.h"
@@ -12,7 +11,7 @@ class PoseMeshCreator : public QObject
 signals:
     void finished();
 public:
-    PoseMeshCreator(const Poser &poser,
+    PoseMeshCreator(const std::vector<JointNode> &resultNodes,
         const MeshResultContext &meshResultContext,
         const std::map<int, AutoRiggerVertexWeights> &resultWeights);
     ~PoseMeshCreator();

src/posepreviewmanager.cpp

@@ -26,7 +26,7 @@ bool PosePreviewManager::postUpdate(const Poser &poser,
     qDebug() << "Pose mesh generating..";
     
     QThread *thread = new QThread;
-    m_poseMeshCreator = new PoseMeshCreator(poser, meshResultContext, resultWeights);
+    m_poseMeshCreator = new PoseMeshCreator(poser.resultNodes(), meshResultContext, resultWeights);
     m_poseMeshCreator->moveToThread(thread);
     connect(thread, &QThread::started, m_poseMeshCreator, &PoseMeshCreator::process);
     connect(m_poseMeshCreator, &PoseMeshCreator::finished, this, &PosePreviewManager::poseMeshReady);

src/posepreviewsgenerator.cpp

@@ -48,7 +48,7 @@ void PosePreviewsGenerator::process()
         poser->parameters() = pose.second;
         poser->commit();
         
-        PoseMeshCreator *poseMeshCreator = new PoseMeshCreator(*poser, *m_meshResultContext, m_rigWeights);
+        PoseMeshCreator *poseMeshCreator = new PoseMeshCreator(poser->resultNodes(), *m_meshResultContext, m_rigWeights);
         poseMeshCreator->createMesh();
         m_previews[pose.first] = poseMeshCreator->takeResultMesh();
         delete poseMeshCreator;

src/poser.cpp

@@ -40,6 +40,11 @@ const std::vector<JointNode> &Poser::resultNodes() const
     return m_jointNodeTree.nodes();
 }
 
+const JointNodeTree &Poser::resultJointNodeTree() const
+{
+    return m_jointNodeTree;
+}
+
 void Poser::commit()
 {
     m_jointNodeTree.recalculateTransformMatrices();

src/poser.h

@@ -15,6 +15,7 @@ public:
     int findBoneIndex(const QString &name);
     const std::vector<AutoRiggerBone> &bones() const;
     const std::vector<JointNode> &resultNodes() const;
+    const JointNodeTree &resultJointNodeTree() const;
     std::map<QString, std::map<QString, QString>> &parameters();
     virtual void commit();
     void reset();

src/posewidget.cpp

@@ -35,6 +35,20 @@ PoseWidget::PoseWidget(const SkeletonDocument *document, QUuid poseId) :
     connect(document, &SkeletonDocument::posePreviewChanged, this, &PoseWidget::updatePreview);
 }
 
+void PoseWidget::setCornerButtonVisible(bool visible)
+{
+    if (nullptr == m_cornerButton) {
+        m_cornerButton = new QPushButton(this);
+        m_cornerButton->move(Theme::posePreviewImageSize - Theme::miniIconSize - 2, 2);
+        Theme::initAwesomeMiniButton(m_cornerButton);
+        m_cornerButton->setText(QChar(fa::plussquare));
+        connect(m_cornerButton, &QPushButton::clicked, this, [=]() {
+            emit cornerButtonClicked(m_poseId);
+        });
+    }
+    m_cornerButton->setVisible(visible);
+}
+
 void PoseWidget::resizeEvent(QResizeEvent *event)
 {
     QWidget::resizeEvent(event);

src/posewidget.h

@@ -2,6 +2,7 @@
 #define POSE_WIDGET_H
 #include <QFrame>
 #include <QLabel>
+#include <QIcon>
 #include "skeletondocument.h"
 #include "modelwidget.h"
 
@@ -10,23 +11,26 @@ class PoseWidget : public QFrame
     Q_OBJECT
 signals:
     void modifyPose(QUuid poseId);
+    void cornerButtonClicked(QUuid poseId);
 public:
     PoseWidget(const SkeletonDocument *document, QUuid poseId);
     static int preferredHeight();
     ModelWidget *previewWidget();
 protected:
     void mouseDoubleClickEvent(QMouseEvent *event) override;
+    void resizeEvent(QResizeEvent *event) override;
 public slots:
     void reload();
     void updatePreview();
     void updateName();
     void updateCheckedState(bool checked);
-    void resizeEvent(QResizeEvent *event) override;
+    void setCornerButtonVisible(bool visible);
 private:
     QUuid m_poseId;
     const SkeletonDocument *m_document = nullptr;
     ModelWidget *m_previewWidget = nullptr;
     QLabel *m_nameLabel = nullptr;
+    QPushButton *m_cornerButton = nullptr;
 };
 
 #endif

src/riggenerator.cpp

@@ -46,6 +46,11 @@ MeshLoader *RigGenerator::takeResultMesh()
     return resultMesh;
 }
 
+bool RigGenerator::isSucceed()
+{
+    return m_isSucceed;
+}
+
 const std::vector<QString> &RigGenerator::missingMarkNames()
 {
     return m_missingMarkNames;
@@ -95,9 +100,9 @@ void RigGenerator::process()
             std::get<0>(marks.second) / std::get<1>(marks.second),
             std::get<2>(marks.second));
     }
-    bool rigSucceed = m_autoRigger->rig();
+    m_isSucceed = m_autoRigger->rig();
     
-    if (rigSucceed) {
+    if (m_isSucceed) {
         qDebug() << "Rig succeed";
     } else {
         qDebug() << "Rig failed";
@@ -111,7 +116,7 @@ void RigGenerator::process()
     // Blend vertices colors according to bone weights
     
     std::vector<QColor> inputVerticesColors(m_meshResultContext->vertices.size());
-    if (rigSucceed) {
+    if (m_isSucceed) {
         const auto &resultWeights = m_autoRigger->resultWeights();
         const auto &resultBones = m_autoRigger->resultBones();
         

src/riggenerator.h

@@ -19,6 +19,7 @@ public:
     const std::vector<QString> &missingMarkNames();
     const std::vector<QString> &errorMarkNames();
     MeshResultContext *takeMeshResultContext();
+    bool isSucceed();
 signals:
     void finished();
 public slots:
@@ -31,6 +32,7 @@ private:
     std::map<int, AutoRiggerVertexWeights> *m_resultWeights = nullptr;
     std::vector<QString> m_missingMarkNames;
     std::vector<QString> m_errorMarkNames;
+    bool m_isSucceed = false;
 };
 
 #endif

src/skeletondocument.cpp

@@ -53,7 +53,8 @@ SkeletonDocument::SkeletonDocument() :
     m_resultRigWeights(nullptr),
     m_isRigObsolete(false),
     m_riggedResultContext(new MeshResultContext),
-    m_posePreviewsGenerator(nullptr)
+    m_posePreviewsGenerator(nullptr),
+    m_currentRigSucceed(false)
 {
 }
 
@@ -326,6 +327,80 @@ void SkeletonDocument::addPose(QString name, std::map<QString, std::map<QString,
     emit optionsChanged();
 }
 
+void SkeletonDocument::addMotion(QString name, std::vector<HermiteControlNode> controlNodes, std::vector<std::pair<float, QUuid>> keyframes)
+{
+    QUuid newMotionId = QUuid::createUuid();
+    auto &motion = motionMap[newMotionId];
+    motion.id = newMotionId;
+    
+    motion.name = name;
+    motion.controlNodes = controlNodes;
+    motion.keyframes = keyframes;
+    motion.dirty = true;
+    
+    motionIdList.push_back(newMotionId);
+    
+    emit motionAdded(newMotionId);
+    emit motionListChanged();
+    emit optionsChanged();
+}
+
+void SkeletonDocument::removeMotion(QUuid motionId)
+{
+    auto findMotionResult = motionMap.find(motionId);
+    if (findMotionResult == motionMap.end()) {
+        qDebug() << "Remove a none exist motion:" << motionId;
+        return;
+    }
+    motionIdList.erase(std::remove(motionIdList.begin(), motionIdList.end(), motionId), motionIdList.end());
+    motionMap.erase(findMotionResult);
+    
+    emit motionListChanged();
+    emit motionRemoved(motionId);
+    emit optionsChanged();
+}
+
+void SkeletonDocument::setMotionControlNodes(QUuid motionId, std::vector<HermiteControlNode> controlNodes)
+{
+    auto findMotionResult = motionMap.find(motionId);
+    if (findMotionResult == motionMap.end()) {
+        qDebug() << "Find motion failed:" << motionId;
+        return;
+    }
+    findMotionResult->second.controlNodes = controlNodes;
+    findMotionResult->second.dirty = true;
+    emit motionControlNodesChanged(motionId);
+    emit optionsChanged();
+}
+
+void SkeletonDocument::setMotionKeyframes(QUuid motionId, std::vector<std::pair<float, QUuid>> keyframes)
+{
+    auto findMotionResult = motionMap.find(motionId);
+    if (findMotionResult == motionMap.end()) {
+        qDebug() << "Find motion failed:" << motionId;
+        return;
+    }
+    findMotionResult->second.keyframes = keyframes;
+    findMotionResult->second.dirty = true;
+    emit motionKeyframesChanged(motionId);
+    emit optionsChanged();
+}
+
+void SkeletonDocument::renameMotion(QUuid motionId, QString name)
+{
+    auto findMotionResult = motionMap.find(motionId);
+    if (findMotionResult == motionMap.end()) {
+        qDebug() << "Find motion failed:" << motionId;
+        return;
+    }
+    if (findMotionResult->second.name == name)
+        return;
+    
+    findMotionResult->second.name = name;
+    emit motionNameChanged(motionId);
+    emit optionsChanged();
+}
+
 void SkeletonDocument::removePose(QUuid poseId)
 {
     auto findPoseResult = poseMap.find(poseId);
@@ -517,6 +592,14 @@ const SkeletonPose *SkeletonDocument::findPose(QUuid poseId) const
     return &it->second;
 }
 
+const SkeletonMotion *SkeletonDocument::findMotion(QUuid motionId) const
+{
+    auto it = motionMap.find(motionId);
+    if (it == motionMap.end())
+        return nullptr;
+    return &it->second;
+}
+
 void SkeletonDocument::scaleNodeByAddRadius(QUuid nodeId, float amount)
 {
     auto it = nodeMap.find(nodeId);
@@ -747,7 +830,7 @@ void SkeletonDocument::markAllDirty()
 }
 
 void SkeletonDocument::toSnapshot(SkeletonSnapshot *snapshot, const std::set<QUuid> &limitNodeIds,
-    SkeletonDocumentToSnapshotFor forWhat, const std::set<QUuid> &limitPoseIds) const
+    SkeletonDocumentToSnapshotFor forWhat, const std::set<QUuid> &limitPoseIds, const std::set<QUuid> &limitMotionIds) const
 {
     if (SkeletonDocumentToSnapshotFor::Document == forWhat ||
             SkeletonDocumentToSnapshotFor::Nodes == forWhat) {
@@ -883,6 +966,43 @@ void SkeletonDocument::toSnapshot(SkeletonSnapshot *snapshot, const std::set<QUu
             snapshot->poses.push_back(std::make_pair(pose, poseIt.second.parameters));
         }
     }
+    if (SkeletonDocumentToSnapshotFor::Document == forWhat ||
+            SkeletonDocumentToSnapshotFor::Motions == forWhat) {
+        for (const auto &motionId: motionIdList) {
+            if (!limitMotionIds.empty() && limitMotionIds.find(motionId) == limitMotionIds.end())
+                continue;
+            auto findMotionResult = motionMap.find(motionId);
+            if (findMotionResult == motionMap.end()) {
+                qDebug() << "Find motion failed:" << motionId;
+                continue;
+            }
+            auto &motionIt = *findMotionResult;
+            std::map<QString, QString> motion;
+            motion["id"] = motionIt.second.id.toString();
+            if (!motionIt.second.name.isEmpty())
+                motion["name"] = motionIt.second.name;
+            std::vector<std::map<QString, QString>> controlNodesAttributes;
+            std::vector<std::map<QString, QString>> keyframesAttributes;
+            for (const auto &controlNode: motionIt.second.controlNodes) {
+                std::map<QString, QString> attributes;
+                attributes["x"] = QString::number(controlNode.position.x());
+                attributes["y"] = QString::number(controlNode.position.y());
+                attributes["inTangentX"] = QString::number(controlNode.inTangent.x());
+                attributes["inTangentY"] = QString::number(controlNode.inTangent.y());
+                attributes["outTangentX"] = QString::number(controlNode.outTangent.x());
+                attributes["outTangentY"] = QString::number(controlNode.outTangent.y());
+                controlNodesAttributes.push_back(attributes);
+            }
+            for (const auto &keyframe: motionIt.second.keyframes) {
+                std::map<QString, QString> attributes;
+                attributes["knot"] = QString::number(keyframe.first);
+                attributes["linkDataType"] = "poseId";
+                attributes["linkData"] = keyframe.second.toString();
+                keyframesAttributes.push_back(attributes);
+            }
+            snapshot->motions.push_back(std::make_tuple(motion, controlNodesAttributes, keyframesAttributes));
+        }
+    }
     if (SkeletonDocumentToSnapshotFor::Document == forWhat) {
         std::map<QString, QString> canvas;
         canvas["originX"] = QString::number(originX);
@@ -1065,6 +1185,44 @@ void SkeletonDocument::addFromSnapshot(const SkeletonSnapshot &snapshot, bool fr
         poseIdList.push_back(newPoseId);
         emit poseAdded(newPoseId);
     }
+    for (const auto &motionIt: snapshot.motions) {
+        QUuid newMotionId = QUuid::createUuid();
+        auto &newMotion = motionMap[newMotionId];
+        newMotion.id = newMotionId;
+        const auto &motionAttributes = std::get<0>(motionIt);
+        newMotion.name = valueOfKeyInMapOrEmpty(motionAttributes, "name");
+        for (const auto &attributes: std::get<1>(motionIt)) {
+            float x = valueOfKeyInMapOrEmpty(attributes, "x").toFloat();
+            float y = valueOfKeyInMapOrEmpty(attributes, "y").toFloat();
+            float inTangentX = valueOfKeyInMapOrEmpty(attributes, "inTangentX").toFloat();
+            float inTangentY = valueOfKeyInMapOrEmpty(attributes, "inTangentY").toFloat();
+            float outTangentX = valueOfKeyInMapOrEmpty(attributes, "outTangentX").toFloat();
+            float outTangentY = valueOfKeyInMapOrEmpty(attributes, "outTangentY").toFloat();
+            HermiteControlNode hermite(QVector2D(x, y),
+                QVector2D(inTangentX, inTangentY), QVector2D(outTangentX, outTangentY));
+            newMotion.controlNodes.push_back(hermite);
+        }
+        for (const auto &attributes: std::get<2>(motionIt)) {
+            float knot = valueOfKeyInMapOrEmpty(attributes, "knot").toFloat();
+            QString linkDataType = valueOfKeyInMapOrEmpty(attributes, "linkDataType");
+            if ("poseId" != linkDataType) {
+                qDebug() << "Encounter unknown linkDataType:" << linkDataType;
+                continue;
+            }
+            QUuid linkToPoseId = QUuid(valueOfKeyInMapOrEmpty(attributes, "linkData"));
+            auto findPoseResult = poseMap.find(linkToPoseId);
+            if (findPoseResult != poseMap.end()) {
+                newMotion.keyframes.push_back({knot, findPoseResult->first});
+            } else {
+                auto findInOldNewIdMapResult = oldNewIdMap.find(linkToPoseId);
+                if (findInOldNewIdMapResult != oldNewIdMap.end())
+                    newMotion.keyframes.push_back({knot, findInOldNewIdMapResult->second});
+            }
+        }
+        oldNewIdMap[QUuid(valueOfKeyInMapOrEmpty(motionAttributes, "id"))] = newMotionId;
+        motionIdList.push_back(newMotionId);
+        emit motionAdded(newMotionId);
+    }
     
     for (const auto &nodeIt: newAddedNodeIds) {
         emit nodeAdded(nodeIt);
@@ -1097,6 +1255,8 @@ void SkeletonDocument::addFromSnapshot(const SkeletonSnapshot &snapshot, bool fr
     
     if (!snapshot.poses.empty())
         emit poseListChanged();
+    if (!snapshot.motions.empty())
+        emit motionListChanged();
 }
 
 void SkeletonDocument::reset()
@@ -1111,6 +1271,8 @@ void SkeletonDocument::reset()
     componentMap.clear();
     poseMap.clear();
     poseIdList.clear();
+    motionMap.clear();
+    motionIdList.clear();
     rootComponent = SkeletonComponent();
     emit cleanup();
     emit skeletonChanged();
@@ -2076,7 +2238,7 @@ bool SkeletonDocument::hasPastableNodesInClipboard() const
     const QClipboard *clipboard = QApplication::clipboard();
     const QMimeData *mimeData = clipboard->mimeData();
     if (mimeData->hasText()) {
-        if (-1 != mimeData->text().left(1000).indexOf("<node "))
+        if (-1 != mimeData->text().indexOf("<node "))
             return true;
     }
     return false;
@@ -2087,7 +2249,18 @@ bool SkeletonDocument::hasPastablePosesInClipboard() const
     const QClipboard *clipboard = QApplication::clipboard();
     const QMimeData *mimeData = clipboard->mimeData();
     if (mimeData->hasText()) {
-        if (-1 != mimeData->text().right(1000).indexOf("<pose "))
+        if (-1 != mimeData->text().indexOf("<pose "))
+            return true;
+    }
+    return false;
+}
+
+bool SkeletonDocument::hasPastableMotionsInClipboard() const
+{
+    const QClipboard *clipboard = QApplication::clipboard();
+    const QMimeData *mimeData = clipboard->mimeData();
+    if (mimeData->hasText()) {
+        if (-1 != mimeData->text().indexOf("<motion "))
             return true;
     }
     return false;
@@ -2378,6 +2551,8 @@ void SkeletonDocument::generateRig()
 
 void SkeletonDocument::rigReady()
 {
+    m_currentRigSucceed = m_rigGenerator->isSucceed();
+
     delete m_resultRigWeightMesh;
     m_resultRigWeightMesh = m_rigGenerator->takeResultMesh();
     
@@ -2466,6 +2641,11 @@ const MeshResultContext &SkeletonDocument::currentRiggedResultContext() const
     return *m_riggedResultContext;
 }
 
+bool SkeletonDocument::currentRigSucceed() const
+{
+    return m_currentRigSucceed;
+}
+
 void SkeletonDocument::generatePosePreviews()
 {
     if (nullptr != m_posePreviewsGenerator) {

src/skeletondocument.h

@@ -21,6 +21,7 @@
 #include "riggenerator.h"
 #include "rigtype.h"
 #include "posepreviewsgenerator.h"
+#include "curveutil.h"
 
 class SkeletonNode
 {
@@ -377,11 +378,27 @@ private:
     MeshLoader *m_previewMesh = nullptr;
 };
 
+class SkeletonMotion
+{
+public:
+    SkeletonMotion()
+    {
+    }
+    QUuid id;
+    QString name;
+    bool dirty = true;
+    std::vector<HermiteControlNode> controlNodes;
+    std::vector<std::pair<float, QUuid>> keyframes; //std::pair<timeslot:0~1, poseId>
+private:
+    Q_DISABLE_COPY(SkeletonMotion);
+};
+
 enum class SkeletonDocumentToSnapshotFor
 {
     Document = 0,
     Nodes,
-    Poses
+    Poses,
+    Motions
 };
 
 class SkeletonDocument : public QObject
@@ -451,6 +468,12 @@ signals:
     void poseNameChanged(QUuid poseId);
     void poseParametersChanged(QUuid poseId);
     void posePreviewChanged(QUuid poseId);
+    void motionAdded(QUuid motionId);
+    void motionRemoved(QUuid motionId);
+    void motionListChanged();
+    void motionNameChanged(QUuid motionId);
+    void motionControlNodesChanged(QUuid motionId);
+    void motionKeyframesChanged(QUuid motionId);
 public: // need initialize
     float originX;
     float originY;
@@ -476,12 +499,15 @@ public:
     std::map<QUuid, SkeletonComponent> componentMap;
     std::map<QUuid, SkeletonPose> poseMap;
     std::vector<QUuid> poseIdList;
+    std::map<QUuid, SkeletonMotion> motionMap;
+    std::vector<QUuid> motionIdList;
     SkeletonComponent rootComponent;
     QImage turnaround;
     QImage preview;
     void toSnapshot(SkeletonSnapshot *snapshot, const std::set<QUuid> &limitNodeIds=std::set<QUuid>(),
         SkeletonDocumentToSnapshotFor forWhat=SkeletonDocumentToSnapshotFor::Document,
-        const std::set<QUuid> &limitPoseIds=std::set<QUuid>()) const;
+        const std::set<QUuid> &limitPoseIds=std::set<QUuid>(),
+        const std::set<QUuid> &limitMotionIds=std::set<QUuid>()) const;
     void fromSnapshot(const SkeletonSnapshot &snapshot);
     void addFromSnapshot(const SkeletonSnapshot &snapshot, bool fromPaste=true);
     const SkeletonNode *findNode(QUuid nodeId) const;
@@ -492,6 +518,7 @@ public:
     const SkeletonComponent *findComponentParent(QUuid componentId) const;
     QUuid findComponentParentId(QUuid componentId) const;
     const SkeletonPose *findPose(QUuid poseId) const;
+    const SkeletonMotion *findMotion(QUuid motionId) const;
     MeshLoader *takeResultMesh();
     MeshLoader *takeResultTextureMesh();
     MeshLoader *takeResultRigWeightMesh();
@@ -501,6 +528,7 @@ public:
     void setSharedContextWidget(QOpenGLWidget *sharedContextWidget);
     bool hasPastableNodesInClipboard() const;
     bool hasPastablePosesInClipboard() const;
+    bool hasPastableMotionsInClipboard() const;
     bool undoable() const;
     bool redoable() const;
     bool isNodeEditable(QUuid nodeId) const;
@@ -515,6 +543,7 @@ public:
     const std::vector<QString> &resultRigMissingMarkNames() const;
     const std::vector<QString> &resultRigErrorMarkNames() const;
     const MeshResultContext &currentRiggedResultContext() const;
+    bool currentRigSucceed() const;
 public slots:
     void removeNode(QUuid nodeId);
     void removeEdge(QUuid edgeId);
@@ -602,6 +631,11 @@ public slots:
     void removePose(QUuid poseId);
     void setPoseParameters(QUuid poseId, std::map<QString, std::map<QString, QString>> parameters);
     void renamePose(QUuid poseId, QString name);
+    void addMotion(QString name, std::vector<HermiteControlNode> controlNodes, std::vector<std::pair<float, QUuid>> keyframes);
+    void removeMotion(QUuid motionId);
+    void setMotionControlNodes(QUuid motionId, std::vector<HermiteControlNode> controlNodes);
+    void setMotionKeyframes(QUuid motionId, std::vector<std::pair<float, QUuid>> keyframes);
+    void renameMotion(QUuid motionId, QString name);
 private:
     void splitPartByNode(std::vector<std::vector<QUuid>> *groups, QUuid nodeId);
     void joinNodeAndNeiborsToGroup(std::vector<QUuid> *group, QUuid nodeId, std::set<QUuid> *visitMap, QUuid noUseEdgeId=QUuid());
@@ -643,6 +677,7 @@ private: // need initialize
     bool m_isRigObsolete;
     MeshResultContext *m_riggedResultContext;
     PosePreviewsGenerator *m_posePreviewsGenerator;
+    bool m_currentRigSucceed;
 private:
     static unsigned long m_maxSnapshot;
     std::deque<SkeletonHistoryItem> m_undoItems;

src/skeletondocumentwindow.cpp

@@ -30,6 +30,7 @@
 #include "skeletonparttreewidget.h"
 #include "rigwidget.h"
 #include "markiconcreator.h"
+#include "motionmanagewidget.h"
 
 int SkeletonDocumentWindow::m_modelRenderWidgetInitialX = 16;
 int SkeletonDocumentWindow::m_modelRenderWidgetInitialY = 16;
@@ -238,8 +239,17 @@ SkeletonDocumentWindow::SkeletonDocumentWindow() :
             emit m_document->posePreviewChanged(pose.first);
     });
     
+    QDockWidget *motionDocker = new QDockWidget(tr("Motions"), this);
+    motionDocker->setAllowedAreas(Qt::RightDockWidgetArea);
+    MotionManageWidget *motionManageWidget = new MotionManageWidget(m_document, motionDocker);
+    motionDocker->setWidget(motionManageWidget);
+    connect(motionManageWidget, &MotionManageWidget::registerDialog, this, &SkeletonDocumentWindow::registerDialog);
+    connect(motionManageWidget, &MotionManageWidget::unregisterDialog, this, &SkeletonDocumentWindow::unregisterDialog);
+    addDockWidget(Qt::RightDockWidgetArea, motionDocker);
+    
     tabifyDockWidget(partTreeDocker, rigDocker);
     tabifyDockWidget(rigDocker, poseDocker);
+    tabifyDockWidget(poseDocker, motionDocker);
     
     partTreeDocker->raise();
 
@@ -524,6 +534,13 @@ SkeletonDocumentWindow::SkeletonDocumentWindow() :
     });
     m_windowMenu->addAction(m_showPosesAction);
     
+    m_showMotionsAction = new QAction(tr("Motions"), this);
+    connect(m_showMotionsAction, &QAction::triggered, [=]() {
+        motionDocker->show();
+        motionDocker->raise();
+    });
+    m_windowMenu->addAction(m_showMotionsAction);
+    
     QMenu *dialogsMenu = m_windowMenu->addMenu(tr("Dialogs"));
     connect(dialogsMenu, &QMenu::aboutToShow, [=]() {
         dialogsMenu->clear();

src/skeletondocumentwindow.h

@@ -137,6 +137,7 @@ private:
     QAction *m_showDebugDialogAction;
     QAction *m_showRigAction;
     QAction *m_showPosesAction;
+    QAction *m_showMotionsAction;
     QAction *m_showAdvanceSettingAction;
     
     QMenu *m_helpMenu;

src/skeletonsnapshot.h

@@ -16,6 +16,7 @@ public:
     std::map<QString, std::map<QString, QString>> components;
     std::map<QString, QString> rootComponent;
     std::vector<std::pair<std::map<QString, QString>, std::map<QString, std::map<QString, QString>>>> poses; // std::pair<Pose attributes, Bone attributes>
+    std::vector<std::tuple<std::map<QString, QString>, std::vector<std::map<QString, QString>>, std::vector<std::map<QString, QString>>>> motions; // std::tuple<Motion attributes, controlNodes, keyframes>
 public:
     void resolveBoundingBox(QRectF *mainProfile, QRectF *sideProfile, const QString &partId=QString());
 };

src/skeletonxml.cpp

@@ -99,6 +99,7 @@ void saveSkeletonToXmlStream(SkeletonSnapshot *snapshot, QXmlStreamWriter *write
                 for (poseAttributeIterator = poseIterator->first.begin(); poseAttributeIterator != poseIterator->first.end(); poseAttributeIterator++) {
                     writer->writeAttribute(poseAttributeIterator->first, poseAttributeIterator->second);
                 }
+                writer->writeStartElement("parameters");
                 std::map<QString, std::map<QString, QString>>::iterator itemsIterator;
                 for (itemsIterator = poseIterator->second.begin(); itemsIterator != poseIterator->second.end(); itemsIterator++) {
                     std::map<QString, QString>::iterator parametersIterator;
@@ -111,6 +112,47 @@ void saveSkeletonToXmlStream(SkeletonSnapshot *snapshot, QXmlStreamWriter *write
                     writer->writeEndElement();
                 }
                 writer->writeEndElement();
+            writer->writeEndElement();
+        }
+        writer->writeEndElement();
+    
+        writer->writeStartElement("motions");
+        std::vector<std::tuple<std::map<QString, QString>, std::vector<std::map<QString, QString>>, std::vector<std::map<QString, QString>>>>::iterator motionIterator;
+        for (motionIterator = snapshot->motions.begin(); motionIterator != snapshot->motions.end(); motionIterator++) {
+            std::map<QString, QString>::iterator motionAttributeIterator;
+            writer->writeStartElement("motion");
+                for (motionAttributeIterator = std::get<0>(*motionIterator).begin(); motionAttributeIterator != std::get<0>(*motionIterator).end(); motionAttributeIterator++) {
+                    writer->writeAttribute(motionAttributeIterator->first, motionAttributeIterator->second);
+                }
+                writer->writeStartElement("controlNodes");
+                {
+                    std::vector<std::map<QString, QString>>::iterator itemsIterator;
+                    for (itemsIterator = std::get<1>(*motionIterator).begin(); itemsIterator != std::get<1>(*motionIterator).end(); itemsIterator++) {
+                        std::map<QString, QString>::iterator attributesIterator;
+                        writer->writeStartElement("controlNode");
+                        for (attributesIterator = itemsIterator->begin(); attributesIterator != itemsIterator->end();
+                                attributesIterator++) {
+                            writer->writeAttribute(attributesIterator->first, attributesIterator->second);
+                        }
+                        writer->writeEndElement();
+                    }
+                }
+                writer->writeEndElement();
+                writer->writeStartElement("keyframes");
+                {
+                    std::vector<std::map<QString, QString>>::iterator itemsIterator;
+                    for (itemsIterator = std::get<2>(*motionIterator).begin(); itemsIterator != std::get<2>(*motionIterator).end(); itemsIterator++) {
+                        std::map<QString, QString>::iterator attributesIterator;
+                        writer->writeStartElement("keyframe");
+                        for (attributesIterator = itemsIterator->begin(); attributesIterator != itemsIterator->end();
+                                attributesIterator++) {
+                            writer->writeAttribute(attributesIterator->first, attributesIterator->second);
+                        }
+                        writer->writeEndElement();
+                    }
+                }
+                writer->writeEndElement();
+            writer->writeEndElement();
         }
         writer->writeEndElement();
     
@@ -124,6 +166,7 @@ void loadSkeletonFromXmlStream(SkeletonSnapshot *snapshot, QXmlStreamReader &rea
     std::stack<QString> componentStack;
     std::vector<QString> elementNameStack;
     std::pair<std::map<QString, QString>, std::map<QString, std::map<QString, QString>>> currentPose;
+    std::tuple<std::map<QString, QString>, std::vector<std::map<QString, QString>>, std::vector<std::map<QString, QString>>> currentMotion;
     while (!reader.atEnd()) {
         reader.readNext();
         if (!reader.isStartElement() && !reader.isEndElement()) {
@@ -208,7 +251,8 @@ void loadSkeletonFromXmlStream(SkeletonSnapshot *snapshot, QXmlStreamReader &rea
                 foreach(const QXmlStreamAttribute &attr, reader.attributes()) {
                     currentPose.first[attr.name().toString()] = attr.value().toString();
                 }
-            } else if (fullName == "canvas.poses.pose.parameter") {
+            } else if (fullName == "canvas.poses.pose.parameter" ||
+                    fullName == "canvas.poses.pose.parameters.parameter") {
                 QString forWhat = reader.attributes().value("for").toString();
                 if (forWhat.isEmpty())
                     continue;
@@ -217,12 +261,34 @@ void loadSkeletonFromXmlStream(SkeletonSnapshot *snapshot, QXmlStreamReader &rea
                         continue;
                     currentPose.second[forWhat][attr.name().toString()] = attr.value().toString();
                 }
+            } else if (fullName == "canvas.motions.motion") {
+               QString motionId = reader.attributes().value("id").toString();
+               if (motionId.isEmpty())
+                   continue;
+               currentMotion = decltype(currentMotion)();
+               foreach(const QXmlStreamAttribute &attr, reader.attributes()) {
+                   std::get<0>(currentMotion)[attr.name().toString()] = attr.value().toString();
+               }
+           } else if (fullName == "canvas.motions.motion.controlNodes.controlNode") {
+                std::map<QString, QString> attributes;
+                foreach(const QXmlStreamAttribute &attr, reader.attributes()) {
+                    attributes[attr.name().toString()] = attr.value().toString();
+                }
+                std::get<1>(currentMotion).push_back(attributes);
+            } else if (fullName == "canvas.motions.motion.keyframes.keyframe") {
+                std::map<QString, QString> attributes;
+                foreach(const QXmlStreamAttribute &attr, reader.attributes()) {
+                    attributes[attr.name().toString()] = attr.value().toString();
+                }
+                std::get<2>(currentMotion).push_back(attributes);
             }
         } else if (reader.isEndElement()) {
             if (fullName.startsWith("canvas.components.component")) {
                 componentStack.pop();
             } else if (fullName == "canvas.poses.pose") {
                 snapshot->poses.push_back(currentPose);
+            } else if (fullName == "canvas.motions.motion") {
+                snapshot->motions.push_back(currentMotion);
             }
         }
     }

src/theme.cpp

@@ -35,6 +35,7 @@ int Theme::miniIconFontSize = 9;
 int Theme::miniIconSize = 15;
 int Theme::partPreviewImageSize = (Theme::miniIconSize * 3);
 int Theme::posePreviewImageSize = 75;
+int Theme::motionPreviewImageSize = 75;
 int Theme::sidebarPreferredWidth = 200;
 
 QtAwesome *Theme::awesome()

src/theme.h

@@ -36,6 +36,7 @@ public:
     static int toolIconSize;
     static int posePreviewImageSize;
     static int partPreviewImageSize;
+    static int motionPreviewImageSize;
     static int miniIconFontSize;
     static int miniIconSize;
     static int sidebarPreferredWidth;

src/videoframeextractor.h

@@ -1,41 +0,0 @@
-#ifndef VIDEO_FRAME_EXTRACTOR_H
-#define VIDEO_FRAME_EXTRACTOR_H
-#include <QObject>
-#include <QImage>
-#include <QTemporaryFile>
-
-struct VideoFrame
-{
-    QImage image;
-    QImage thumbnail;
-    qint64 position;
-    float durationSeconds = 0;
-};
-
-class VideoFrameExtractor : public QObject
-{
-    Q_OBJECT
-public:
-    VideoFrameExtractor(const QString &fileName, const QString &realPath, QTemporaryFile *fileHandle, float thumbnailHeight, int maxFrames=(10 * 60));
-    ~VideoFrameExtractor();
-    const QString &fileName();
-    const QString &realPath();
-    QTemporaryFile *fileHandle();
-    void extract();
-    std::vector<VideoFrame> *takeResultFrames();
-signals:
-    void finished();
-public slots:
-    void process();
-private:
-    void release();
-private:
-    QString m_fileName;
-    QString m_realPath;
-    QTemporaryFile *m_fileHandle = nullptr;
-    std::vector<VideoFrame> *m_resultFrames = nullptr;
-    int m_maxFrames;
-    float m_thumbnailHeight = 0;
-};
-
-#endif