Add preference: Interpolation enabling toggle

Disabling interpolation would remove the auto generated intermediate nodes, then reduce the generated triangles.

src/document.cpp

@@ -85,6 +85,7 @@ Document::Document() :
     connect(&Preferences::instance(), &Preferences::partColorChanged, this, &Document::applyPreferencePartColorChange);
     connect(&Preferences::instance(), &Preferences::flatShadingChanged, this, &Document::applyPreferenceFlatShadingChange);
     connect(&Preferences::instance(), &Preferences::textureSizeChanged, this, &Document::applyPreferenceTextureSizeChange);
+    connect(&Preferences::instance(), &Preferences::interpolationEnabledChanged, this, &Document::applyPreferenceInterpolationChange);
 }
 
 void Document::applyPreferencePartColorChange()
@@ -103,6 +104,11 @@ void Document::applyPreferenceTextureSizeChange()
     generateTexture();
 }
 
+void Document::applyPreferenceInterpolationChange()
+{
+    regenerateMesh();
+}
+
 Document::~Document()
 {
     delete m_resultMesh;
@@ -2055,6 +2061,7 @@ void Document::generateMesh()
     m_meshGenerator = new MeshGenerator(snapshot);
     m_meshGenerator->setId(m_nextMeshGenerationId++);
     m_meshGenerator->setDefaultPartColor(Preferences::instance().partColor());
+    m_meshGenerator->setInterpolationEnabled(Preferences::instance().interpolationEnabled());
     if (nullptr == m_generatedCacheContext)
         m_generatedCacheContext = new GeneratedCacheContext;
     m_meshGenerator->setGeneratedCacheContext(m_generatedCacheContext);

src/document.h

@@ -633,6 +633,7 @@ public slots:
     void applyPreferencePartColorChange();
     void applyPreferenceFlatShadingChange();
     void applyPreferenceTextureSizeChange();
+    void applyPreferenceInterpolationChange();
     void initScript(const QString &script);
     void updateScript(const QString &script);
     void runScript();

src/meshgenerator.cpp

@@ -1021,11 +1021,11 @@ MeshCombiner::Mesh *MeshGenerator::combineComponentMesh(const QString &component
         QString partIdString = valueOfKeyInMapOrEmpty(*component, "linkData");
         bool hasError = false;
         bool retryable = true;
-        mesh = combinePartMesh(partIdString, &hasError, &retryable);
+        mesh = combinePartMesh(partIdString, &hasError, &retryable, m_interpolationEnabled);
         if (hasError) {
             delete mesh;
             mesh = nullptr;
-            if (retryable) {
+            if (retryable && m_interpolationEnabled) {
                 hasError = false;
                 qDebug() << "Try combine part again without adding intermediate nodes";
                 mesh = combinePartMesh(partIdString, &hasError, &retryable, false);
@@ -1411,6 +1411,11 @@ void MeshGenerator::setSmoothShadingThresholdAngleDegrees(float degrees)
     m_smoothShadingThresholdAngleDegrees = degrees;
 }
 
+void MeshGenerator::setInterpolationEnabled(bool interpolationEnabled)
+{
+    m_interpolationEnabled = interpolationEnabled;
+}
+
 void MeshGenerator::process()
 {
     generate();

src/meshgenerator.h

@@ -96,6 +96,7 @@ public:
     void generate();
     void setGeneratedCacheContext(GeneratedCacheContext *cacheContext);
     void setSmoothShadingThresholdAngleDegrees(float degrees);
+    void setInterpolationEnabled(bool interpolationEnabled);
     void setDefaultPartColor(const QColor &color);
     void setId(quint64 id);
     void setWeldEnabled(bool enabled);
@@ -130,6 +131,7 @@ private:
     std::vector<QVector3D> m_clothCollisionVertices;
     std::vector<std::vector<size_t>> m_clothCollisionTriangles;
     bool m_weldEnabled = true;
+    bool m_interpolationEnabled = true;
     
     void collectParts();
     void collectIncombinableComponentMeshes(const QString &componentIdString);

src/preferences.cpp

@@ -19,6 +19,7 @@ void Preferences::loadDefault()
     m_toonLine = ToonLine::WithoutLine;
     m_textureSize = 1024;
     m_scriptEnabled = false;
+    m_interpolationEnabled = true;
 }
 
 Preferences::Preferences()
@@ -65,6 +66,13 @@ Preferences::Preferences()
         else
             m_scriptEnabled = isTrueValueString(value);
     }
+    {
+        QString value = m_settings.value("interpolationEnabled").toString();
+        if (value.isEmpty())
+            m_interpolationEnabled = true;
+        else
+            m_interpolationEnabled = isTrueValueString(value);
+    }
 }
 
 CombineMode Preferences::componentCombineMode() const
@@ -87,6 +95,11 @@ bool Preferences::scriptEnabled() const
     return m_scriptEnabled;
 }
 
+bool Preferences::interpolationEnabled() const
+{
+    return m_interpolationEnabled;
+}
+
 bool Preferences::toonShading() const
 {
     return m_toonShading;
@@ -138,6 +151,15 @@ void Preferences::setScriptEnabled(bool enabled)
     emit scriptEnabledChanged();
 }
 
+void Preferences::setInterpolationEnabled(bool enabled)
+{
+    if (m_interpolationEnabled == enabled)
+        return;
+    m_interpolationEnabled = enabled;
+    m_settings.setValue("interpolationEnabled", enabled ? "true" : "false");
+    emit interpolationEnabledChanged();
+}
+
 void Preferences::setToonShading(bool toonShading)
 {
     if (m_toonShading == toonShading)
@@ -186,4 +208,5 @@ void Preferences::reset()
     emit toonLineChanged();
     emit textureSizeChanged();
     emit scriptEnabledChanged();
+    emit interpolationEnabledChanged();
 }

src/preferences.h

@@ -16,6 +16,7 @@ public:
     const QColor &partColor() const;
     bool flatShading() const;
     bool scriptEnabled() const;
+    bool interpolationEnabled() const;
     bool toonShading() const;
     ToonLine toonLine() const;
     QSize documentWindowSize() const;
@@ -28,6 +29,7 @@ signals:
     void toonShadingChanged();
     void toonLineChanged();
     void textureSizeChanged();
+    void interpolationEnabledChanged();
     void scriptEnabledChanged();
 public slots:
     void setComponentCombineMode(CombineMode mode);
@@ -37,6 +39,7 @@ public slots:
     void setToonLine(ToonLine toonLine);
     void setTextureSize(int textureSize);
     void setScriptEnabled(bool enabled);
+    void setInterpolationEnabled(bool enabled);
     void reset();
 private:
     CombineMode m_componentCombineMode;
@@ -47,6 +50,7 @@ private:
     QSettings m_settings;
     int m_textureSize;
     bool m_scriptEnabled;
+    bool m_interpolationEnabled;
 private:
     void loadDefault();
 };

src/preferenceswidget.cpp

@@ -85,6 +85,12 @@ PreferencesWidget::PreferencesWidget(const Document *document, QWidget *parent)
     toonShadingLayout->addWidget(toonLineSelectBox);
     toonShadingLayout->addStretch();
     
+    QCheckBox *interpolationEnabledBox = new QCheckBox();
+    Theme::initCheckbox(interpolationEnabledBox);
+    connect(interpolationEnabledBox, &QCheckBox::stateChanged, this, [=]() {
+        Preferences::instance().setInterpolationEnabled(interpolationEnabledBox->isChecked());
+    });
+    
     QComboBox *textureSizeSelectBox = new QComboBox;
     textureSizeSelectBox->addItem("512");
     textureSizeSelectBox->addItem("1024");
@@ -104,6 +110,7 @@ PreferencesWidget::PreferencesWidget(const Document *document, QWidget *parent)
     formLayout->addRow(tr("Part color:"), colorLayout);
     formLayout->addRow(tr("Combine mode:"), combineModeSelectBox);
     formLayout->addRow(tr("Flat shading:"), flatShadingBox);
+    formLayout->addRow(tr("Interpolation:"), interpolationEnabledBox);
     formLayout->addRow(tr("Toon shading:"), toonShadingLayout);
     formLayout->addRow(tr("Texture size:"), textureSizeSelectBox);
     formLayout->addRow(tr("Script:"), scriptEnabledBox);
@@ -117,6 +124,7 @@ PreferencesWidget::PreferencesWidget(const Document *document, QWidget *parent)
         textureSizeSelectBox->setCurrentIndex(
             textureSizeSelectBox->findText(QString::number(Preferences::instance().textureSize()))
         );
+        interpolationEnabledBox->setChecked(Preferences::instance().interpolationEnabled());
         scriptEnabledBox->setChecked(Preferences::instance().scriptEnabled());
     };