Fix cut face base normal.

src/texturegenerator.cpp

@@ -10,6 +10,7 @@
 #include "material.h"
 
 int TextureGenerator::m_textureSize = 1024;
+QColor TextureGenerator::m_defaultTextureColor = Qt::darkGray;
 
 TextureGenerator::TextureGenerator(const Outcome &outcome, Snapshot *snapshot) :
     m_resultTextureGuideImage(nullptr),
@@ -233,7 +234,7 @@ void TextureGenerator::generate()
     auto createImageBeginTime = countTimeConsumed.elapsed();
     
     m_resultTextureColorImage = new QImage(TextureGenerator::m_textureSize, TextureGenerator::m_textureSize, QImage::Format_ARGB32);
-    m_resultTextureColorImage->fill(Theme::white);
+    m_resultTextureColorImage->fill(m_defaultTextureColor);
     
     m_resultTextureBorderImage = new QImage(TextureGenerator::m_textureSize, TextureGenerator::m_textureSize, QImage::Format_ARGB32);
     m_resultTextureBorderImage->fill(Qt::transparent);
@@ -315,7 +316,7 @@ void TextureGenerator::generate()
             if (findSourceNodeResult != nodeMap.end() && nullptr != findSourceNodeResult->second) {
                 texturePainter.fillPath(path, QBrush(findSourceNodeResult->second->color));
             } else {
-                texturePainter.fillPath(path, QBrush(Theme::white));
+                texturePainter.fillPath(path, QBrush(m_defaultTextureColor));
             }
         }
         // Copy normal texture if there is one

src/texturegenerator.h

@@ -3,6 +3,7 @@
 #include <QObject>
 #include <vector>
 #include <QImage>
+#include <QColor>
 #include "outcome.h"
 #include "meshloader.h"
 #include "snapshot.h"
@@ -36,6 +37,7 @@ public slots:
     void process();
 public:
     static int m_textureSize;
+    static QColor m_defaultTextureColor;
 private:
     void prepare();
     QPainterPath expandedPainterPath(const QPainterPath &painterPath, int expandSize=7);

thirdparty/nodemesh/nodemesh/builder.cpp

@@ -104,6 +104,8 @@ void Builder::prepareNode(size_t nodeIndex)
         neighborRadius);
     node.initialBaseNormal = baseNormalResult.first;
     node.hasInitialBaseNormal = baseNormalResult.second;
+    if (node.hasInitialBaseNormal)
+        node.initialBaseNormal = revisedBaseNormalAcordingToCutNormal(node.initialBaseNormal, node.traverseDirection);
 }
 
 void Builder::resolveBaseNormalRecursively(size_t nodeIndex)
@@ -260,6 +262,9 @@ bool Builder::build()
     for (const auto &nodeIndex: m_sortedNodeIndices) {
         resolveBaseNormalRecursively(nodeIndex);
     }
+    
+    unifyBaseNormals();
+    
     for (const auto &nodeIndex: m_sortedNodeIndices) {
         if (!generateCutsForNode(nodeIndex))
             succeed = false;
@@ -555,13 +560,24 @@ bool Builder::swallowEdgeForNode(size_t nodeIndex, size_t edgeOrder)
     return true;
 }
 
-void Builder::makeCut(const QVector3D &position,
-        float radius,
-        const std::vector<QVector2D> &cutTemplate,
-        QVector3D &baseNormal,
-        const QVector3D &cutNormal,
-        const QVector3D &traverseDirection,
-        std::vector<QVector3D> &resultCut)
+void Builder::unifyBaseNormals()
+{
+    std::vector<size_t> nodeIndices(m_nodes.size());
+    for (size_t i = 0; i < m_nodes.size(); ++i) {
+        const auto &node = m_nodes[i];
+        nodeIndices[node.reversedTraverseOrder] = i;
+    }
+    for (size_t i = 1; i < nodeIndices.size(); ++i) {
+        size_t lastIndex = nodeIndices[i - 1];
+        size_t nodeIndex = nodeIndices[i];
+        auto &node = m_nodes[nodeIndex];
+        const auto &last = m_nodes[lastIndex];
+        if (QVector3D::dotProduct(node.baseNormal, last.baseNormal) <= 0)
+            node.baseNormal = -node.baseNormal;
+    }
+}
+
+QVector3D Builder::revisedBaseNormalAcordingToCutNormal(const QVector3D &baseNormal, const QVector3D &cutNormal)
 {
     QVector3D orientedBaseNormal = QVector3D::dotProduct(cutNormal, baseNormal) > 0 ?
         baseNormal : -baseNormal;
@@ -573,13 +589,28 @@ void Builder::makeCut(const QVector3D &position,
             orientedBaseNormal = QVector3D(1, 0, 0);
         }
     }
-    baseNormal = orientedBaseNormal.normalized();
+    return orientedBaseNormal.normalized();
+}
+
+void Builder::makeCut(const QVector3D &position,
+        float radius,
+        const std::vector<QVector2D> &cutTemplate,
+        QVector3D &baseNormal,
+        const QVector3D &cutNormal,
+        const QVector3D &traverseDirection,
+        std::vector<QVector3D> &resultCut)
+{
+    baseNormal = revisedBaseNormalAcordingToCutNormal(baseNormal, cutNormal);
     auto finalCutTemplate = cutTemplate;
     auto finalCutNormal = cutNormal;
     if (QVector3D::dotProduct(cutNormal, traverseDirection) <= 0) {
         baseNormal = -baseNormal;
         finalCutNormal = -finalCutNormal;
         std::reverse(finalCutTemplate.begin(), finalCutTemplate.end());
+        //for (auto &it: finalCutTemplate) {
+        //    it.setX(-it.x());
+        //    it.setY(-it.y());
+        //}
     }
     QVector3D u = QVector3D::crossProduct(finalCutNormal, baseNormal).normalized();
     QVector3D v = QVector3D::crossProduct(u, finalCutNormal).normalized();

thirdparty/nodemesh/nodemesh/builder.h

@@ -102,7 +102,9 @@ private:
     void resolveBaseNormalRecursively(size_t nodeIndex);
     void resolveBaseNormalForLeavesRecursively(size_t nodeIndex, const QVector3D &baseNormal);
     std::pair<QVector3D, bool> searchBaseNormalFromNeighborsRecursively(size_t nodeIndex);
+    QVector3D revisedBaseNormalAcordingToCutNormal(const QVector3D &baseNormal, const QVector3D &cutNormal);
     void resolveInitialTraverseDirectionRecursively(size_t nodeIndex, const QVector3D *from, std::set<size_t> *visited);
+    void unifyBaseNormals();
     void resolveTraverseDirection(size_t nodeIndex);
     bool generateCutsForNode(size_t nodeIndex);
     bool tryWrapMultipleBranchesForNode(size_t nodeIndex, std::vector<float> &offsets, bool &offsetsChanged);