#ifndef __PolyVox_OpenGLWidget_H__
#define __PolyVox_OpenGLWidget_H__

#include "glew/glew.h"

#include <QGLWidget>
#include <QTimer>

#include "Volume.h"
#include "IndexedSurfacePatch.h"
#include "SurfaceExtractors.h"
#include "PolyVoxImpl/Utility.h"

#include "OpenGLImmediateModeSupport.h"
#include "OpenGLVertexBufferObjectSupport.h"
#include "Shapes.h"

const PolyVox::uint16_t g_uVolumeSideLength = 128;
//const PolyVox::uint16_t g_uRegionSideLength = 16;
//const PolyVox::uint16_t g_uVolumeSideLengthInRegions = g_uVolumeSideLength / g_uRegionSideLength;

class OpenGLWidget : public QGLWidget
 {

 public:
     OpenGLWidget(QWidget *parent);

	 void setVolume(PolyVox::Volume<PolyVox::uint8_t>* volData);

	 void mouseMoveEvent(QMouseEvent* event);
	 void mousePressEvent(QMouseEvent* event);
	 void wheelEvent ( QWheelEvent * event ); 

 protected:
     void initializeGL();
     void resizeGL(int w, int h);
     void paintGL();

 private:
	QPoint m_LastFrameMousePos;
	QPoint m_CurrentMousePos;

	int m_xRotation;
	int m_yRotation;
	float m_distance;

	QTimer *timer;

	 bool m_bUseOpenGLVertexBufferObjects;

	 //Creates a volume 128x128x128
	PolyVox::Volume<PolyVox::uint8_t>* m_volData;

	//Rather than storing one big mesh, the volume is broken into regions and a mesh is stored for each region
	std::map<PolyVox::Vector3DUint8, OpenGLSurfacePatch> m_mapOpenGLSurfacePatches;
	std::map<PolyVox::Vector3DUint8, PolyVox::IndexedSurfacePatch*> m_mapIndexedSurfacePatches;

	unsigned int m_uRegionSideLength;
	unsigned int m_uVolumeWidthInRegions;
	unsigned int m_uVolumeHeightInRegions;
	unsigned int m_uVolumeDepthInRegions;
 };

#endif //__PolyVox_OpenGLWidget_H__