most settings are saved and restored

QtMeshViewer/Header/OglViewerWidget.h

@@ -23,19 +23,19 @@ private:
 	QOpenGLShaderProgram m_program;
 	GeometryEngine *m_dataEngine;
 
-	QVector4D m_backgroundColorOn = { 0.02f, 0.02f, 0.02f, 1.0f };
-	QVector4D m_backgroundColorOff = { 0.5f, 0.8f, 1.0f, 1.0f };
+	QVector4D m_backgroundColorOn;
+	QVector4D m_backgroundColorOff;
 
-	bool m_wireframe = false;
-	bool m_lightOn = false;
-	bool m_backfaceCulling = false;
+	bool m_wireframe;
+	bool m_lightOn;
+	bool m_backfaceCulling;
 
 	struct {
-		QVector4D position = { 1,1,1,0 };
-		QVector3D intensities = { 1.0,1.0,1.0 };
-		float attenuationFactor = 0.0f;
-		float ambientCoefficient = 0.005f;
-		bool headlight = false;
+		QVector4D position;
+		QVector3D intensities;
+		float attenuationFactor;
+		float ambientCoefficient;
+		bool headlight;
 	} m_light;
 
 	struct {
@@ -51,6 +51,7 @@ private:
 
 // functions
 private:
+	void setDefaultValues();
 	void initShaders();
 	void resetView();
 	void updateLightPosition();
@@ -89,5 +90,10 @@ public slots:
 	void setHeadlight(bool value);
 	void setBackfaceCulling(bool value);
 
+// signals
+signals:
+	void lightChanged(bool value);
+
+
 };