add initial examples, replacing the 'Demos/Demos3'. Will make it work cross-platform, OpenGL3/OpenGL2 and add more examples to it.

examples/ExampleBrowser/OpenGLGuiHelper.h

@@ -0,0 +1,52 @@
+#ifndef OPENGL_GUI_HELPER_H
+#define OPENGL_GUI_HELPER_H
+#include "GUIHelperInterface.h"
+
+class btCollisionShape;
+class btTransform;
+#include "LinearMath/btAlignedObjectArray.h"
+
+struct OpenGLGuiHelper : public GUIHelperInterface
+{
+	struct OpenGLGuiHelperInternalData* m_data;
+
+	OpenGLGuiHelper(struct CommonGraphicsApp* glApp);
+
+	virtual ~OpenGLGuiHelper();
+
+	virtual struct CommonRenderInterface* getRenderInterface();
+
+	virtual void createRigidBodyGraphicsObject(btRigidBody* body, const btVector3& color);
+
+	virtual void createCollisionObjectGraphicsObject(btCollisionObject* body, const btVector3& color);
+
+	virtual int registerGraphicsShape(const float* vertices, int numvertices, const int* indices, int numIndices);
+
+	virtual int registerGraphicsInstance(int shapeIndex, const float* position, const float* quaternion, const float* color, const float* scaling);
+
+	
+
+	virtual void createCollisionShapeGraphicsObject(btCollisionShape* collisionShape);
+
+	virtual void syncPhysicsToGraphics(const btDiscreteDynamicsWorld* rbWorld);
+
+	virtual void createPhysicsDebugDrawer(btDiscreteDynamicsWorld* rbWorld);
+
+	virtual struct Common2dCanvasInterface*	get2dCanvasInterface();
+
+	virtual CommonParameterInterface* getParameterInterface();
+
+	virtual struct CommonGraphicsApp* getAppInterface();
+
+
+	virtual void setUpAxis(int axis);
+	
+	btVector3 selectColor();
+
+	virtual void autogenerateGraphicsObjects(btDiscreteDynamicsWorld* rbWorld) ;
+    
+    virtual void drawText3D( const char* txt, float posX, float posY, float posZ, float size);
+};
+
+#endif //OPENGL_GUI_HELPER_H
+