Refactoring example code.

examples/Basic/main.cpp

@@ -72,7 +72,6 @@ public:
 	BasicExample(QWidget *parent)
 		:OpenGLWidget(parent)
 	{
-
 	}
 
 protected:

examples/DecodeOnGPU/main.cpp

@@ -72,7 +72,6 @@ public:
 	DecodeOnGPUExample(QWidget *parent)
 		:OpenGLWidget(parent)
 	{
-
 	}
 
 protected:

examples/OpenGL/main.cpp

@@ -47,7 +47,16 @@ using namespace std;
 
 const int32_t g_uVolumeSideLength = 128;
 
-int main(int argc, char *argv[])
+class OpenGLExample : public OpenGLWidget
+{
+public:
+	OpenGLExample(QWidget *parent)
+		:OpenGLWidget(parent)
+	{
+	}
+
+protected:
+	void initialize() override
 	{
 		FilePager<MaterialDensityPair88>* pager = new FilePager<MaterialDensityPair88>(".");
 		PagedVolume<MaterialDensityPair88> volData(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(g_uVolumeSideLength - 1, g_uVolumeSideLength - 1, g_uVolumeSideLength - 1)), pager);
@@ -78,13 +87,6 @@ int main(int argc, char *argv[])
 		createCubeInVolume(volData, Vector3DInt32(midPos - 10, 1, midPos - 10), Vector3DInt32(midPos + 10, maxPos - 1, midPos + 10), MaterialDensityPair44::getMaxDensity());
 		createCubeInVolume(volData, Vector3DInt32(midPos - 10, midPos - 10, 1), Vector3DInt32(midPos + 10, midPos + 10, maxPos - 1), MaterialDensityPair44::getMaxDensity());
 
-	QApplication app(argc, argv);
-
-	OpenGLWidget openGLWidget(0);
-
-
-	openGLWidget.show();
-
 		QSharedPointer<QGLShaderProgram> shader(new QGLShaderProgram);
 
 		if (!shader->addShaderFromSourceFile(QGLShader::Vertex, ":/openglexample.vert"))
@@ -99,7 +101,7 @@ int main(int argc, char *argv[])
 			exit(EXIT_FAILURE);
 		}
 
-	openGLWidget.setShader(shader);
+		setShader(shader);
 
 		QTime time;
 		time.start();
@@ -129,7 +131,7 @@ int main(int argc, char *argv[])
 
 					// Pass the surface to the OpenGL window. Note that we are also passing an offset in this multi-mesh example. This is because
 					// the surface extractors return a mesh with 'local space' positions to reduce storage requirements and precision problems.
-				openGLWidget.addMesh(decodedMesh, decodedMesh.getOffset());
+					addMesh(decodedMesh, decodedMesh.getOffset());
 
 					meshCounter++;
 				}
@@ -138,9 +140,17 @@ int main(int argc, char *argv[])
 
 		cout << "Rendering volume as " << meshCounter << " seperate meshes" << endl;
 
+		setViewableRegion(volData.getEnclosingRegion());
+	}
+};
 
-	openGLWidget.setViewableRegion(volData.getEnclosingRegion());
-
+int main(int argc, char *argv[])
+{
+	//Create and show the Qt OpenGL window
+	QApplication app(argc, argv);
+	OpenGLExample openGLWidget(0);
+	openGLWidget.show();
 
+	//Run the message pump.
 	return app.exec();
 }

examples/Paging/main.cpp

@@ -139,13 +139,17 @@ public:
 	}
 };
 
-int main(int argc, char *argv[])
+class PagingExample : public OpenGLWidget
 {
-	//Create and show the Qt OpenGL window
-	QApplication app(argc, argv);
-	OpenGLWidget openGLWidget(0);
-	openGLWidget.show();
+public:
+	PagingExample(QWidget *parent)
+		:OpenGLWidget(parent)
+	{
+	}
 
+protected:
+	void initialize() override
+	{
 		PerlinNoisePager* pager = new PerlinNoisePager();
 		PagedVolume<MaterialDensityPair44> volData(PolyVox::Region::MaxRegion(), pager, 64);
 		volData.setMemoryUsageLimit(8 * 1024 * 1024); // 8Mb
@@ -177,9 +181,18 @@ int main(int argc, char *argv[])
 		auto decodedMesh = decodeMesh(mesh);
 
 		//Pass the surface to the OpenGL window
-	openGLWidget.addMesh(decodedMesh);
+		addMesh(decodedMesh);
 
-	openGLWidget.setViewableRegion(reg2);
+		setViewableRegion(reg2);
+	}
+};
+
+int main(int argc, char *argv[])
+{
+	//Create and show the Qt OpenGL window
+	QApplication app(argc, argv);
+	PagingExample openGLWidget(0);
+	openGLWidget.show();
 
 	//Run the message pump.
 	return app.exec();

examples/SmoothLOD/main.cpp

@@ -68,13 +68,17 @@ void createSphereInVolume(PagedVolume<uint8_t>& volData, float fRadius)
 	}
 }
 
-int main(int argc, char *argv[])
+class SmoothLODExample : public OpenGLWidget
 {
-	//Create and show the Qt OpenGL window
-	QApplication app(argc, argv);
-	OpenGLWidget openGLWidget(0);
-	openGLWidget.show();
+public:
+	SmoothLODExample(QWidget *parent)
+		:OpenGLWidget(parent)
+	{
+	}
 
+protected:
+	void initialize() override
+	{
 		//Create an empty volume and then place a sphere in it
 		PagedVolume<uint8_t> volData(PolyVox::Region(Vector3DInt32(0, 0, 0), Vector3DInt32(63, 63, 63)));
 		createSphereInVolume(volData, 28);
@@ -100,10 +104,19 @@ int main(int argc, char *argv[])
 		auto decodedMeshHighLOD = decodeMesh(meshHighLOD);
 
 		//Pass the surface to the OpenGL window
-	openGLWidget.addMesh(decodedMeshHighLOD, Vector3DInt32(30, 0, 0));
-	openGLWidget.addMesh(decodedMeshLowLOD, Vector3DInt32(0, 0, 0), 63.0f / 31.0f);
+		addMesh(decodedMeshHighLOD, Vector3DInt32(30, 0, 0));
+		addMesh(decodedMeshLowLOD, Vector3DInt32(0, 0, 0), 63.0f / 31.0f);
 
-	openGLWidget.setViewableRegion(volData.getEnclosingRegion());
+		setViewableRegion(volData.getEnclosingRegion());
+	}
+};
+
+int main(int argc, char *argv[])
+{
+	//Create and show the Qt OpenGL window
+	QApplication app(argc, argv);
+	SmoothLODExample openGLWidget(0);
+	openGLWidget.show();
 
 	//Run the message pump.
 	return app.exec();