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

examples/OpenGLWindow/X11OpenGLWindow.h

@@ -0,0 +1,72 @@
+#ifndef X11_OPENGL_WINDOW_H
+#define X11_OPENGL_WINDOW_H
+
+#define b3gDefaultOpenGLWindow X11OpenGLWindow
+
+#include "b3gWindowInterface.h"
+
+class X11OpenGLWindow : public b3gWindowInterface
+{
+
+	struct InternalData2*   m_data;
+        bool m_OpenGLInitialized;
+	bool m_requestedExit;
+
+protected:
+
+        void enableOpenGL();
+
+        void disableOpenGL();
+
+        void pumpMessage();
+
+        int getAsciiCodeFromVirtualKeycode(int orgCode);
+
+public:
+
+        X11OpenGLWindow();
+
+        virtual ~X11OpenGLWindow();
+
+        virtual void    createWindow(const b3gWindowConstructionInfo& ci);
+
+        virtual void    closeWindow();
+
+        virtual void    startRendering();
+
+        virtual void    renderAllObjects();
+
+        virtual void    endRendering();
+
+        virtual float getRetinaScale() const {return 1.f;}
+
+
+	virtual void    runMainLoop();
+        virtual float   getTimeInSeconds();
+
+        virtual bool    requestedExit() const;
+        virtual void    setRequestExit() ;
+
+
+        virtual void setMouseMoveCallback(b3MouseMoveCallback   mouseCallback);
+        virtual void setMouseButtonCallback(b3MouseButtonCallback       mouseCallback);
+        virtual void setResizeCallback(b3ResizeCallback resizeCallback);
+        virtual void setWheelCallback(b3WheelCallback wheelCallback);
+        virtual void setKeyboardCallback( b3KeyboardCallback    keyboardCallback);
+        
+		virtual b3MouseMoveCallback getMouseMoveCallback();
+		virtual b3MouseButtonCallback getMouseButtonCallback();
+		virtual b3ResizeCallback getResizeCallback();
+		virtual b3WheelCallback getWheelCallback();
+		virtual b3KeyboardCallback      getKeyboardCallback();
+
+        virtual void setRenderCallback( b3RenderCallback renderCallback);
+
+        virtual void setWindowTitle(const char* title);
+
+	int fileOpenDialog(char* filename, int maxNameLength);
+};
+
+
+#endif
+