/*******************************************************************************
Copyright (c) 2005-2009 David Williams

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.

3. This notice may not be removed or altered from any source
distribution. 	
*******************************************************************************/

#ifndef __BasicExample_OpenGLWidget_H__
#define __BasicExample_OpenGLWidget_H__



#pragma once
#include "PolyVoxCore/Raycast.h"
#include "PolyVoxCore/MaterialDensityPair.h"
#include "PolyVoxCore/CubicSurfaceExtractorWithNormals.h"
#include "PolyVoxCore/SurfaceMesh.h"
#include "PolyVoxCore/SimpleVolume.h"
#include "PolyVoxCore/MarchingCubesSurfaceExtractor.h"
#include "PolyVoxCore/MeshDecimator.h"
//#include <glew.h>
#include "RaycastIntersectionFinder.h"
#include "fmod.hpp"
#include "fmod_errors.h"

#include <QtOpenGl/QGLWidget>
//Use the PolyVox namespace
using namespace PolyVox;
class OpenGLWidget : public QGLWidget
{
	Q_OBJECT

		public slots:
			void setRadius(int angle);
			//void setYRotation(int angle);
			//void setZRotation(int angle);

signals:
			void radiusChanged(int angle);
			//void yRotationChanged(int angle);
			//void zRotationChanged(int angle);
public:
	//Constructor
	OpenGLWidget(QWidget *parent=0);
	RaycastIntersectionFinder rayCallback;
	int radius;
	QSize minimumSizeHint() const;
	QSize sizeHint() const;
	//FMOD SoundSystem
	FMOD::System     *fmodSys;
	FMOD::Sound      *soundBG, *soundCarve;
	FMOD::Channel    *channel;
	FMOD_RESULT       result;
	void ERRCHECK(FMOD_RESULT result);
	//Convert a SrfaceMesh to OpenGL index/vertex buffers
	void setSurfaceMeshToRender(SurfaceMesh<PolyVox::PositionMaterialNormal>* surfaceMesh, int i);
	void createSphereInVolume(SimpleVolume<uint8_t>* volData,float fRadius);
	void createCubeInVolume(SimpleVolume<uint8_t>* volData, Vector3DInt32 lowerCorner, Vector3DInt32 upperCorner);
	SimpleVolume<uint8_t>* updateVolData(float fRadius, Vector3DInt32 intersectVoxel);

	//SimpleVolume<uint8_t>* updateVolDataKnife(Vector3DInt32 intersectVoxel);

	void whichAreaToRender(Vector3DInt32 intersectionVoxel);
	void generateMeshBasedOnflags();
protected:
	//Qt OpenGL functions
	void initializeGL();
	void resizeGL(int w, int h);
	void paintGL();
	//Mouse handling
	void mouseMoveEvent(QMouseEvent* event);
	void mousePressEvent(QMouseEvent* event);

private:
	//Index/vertex buffer data
	GLuint m_uBeginIndex;
	GLuint m_uEndIndex[8];
	//GLuint noOfIndices;
	GLuint indexBuffer[8];
	GLuint vertexBuffer[8];
	//pen radius



	//Mouse data
	QPoint m_LastFrameMousePos;
	QPoint m_CurrentMousePos;
	int m_xRotation;
	int m_yRotation;
public:
	//simple Volume
	SimpleVolume<uint8_t> *volData;
	//SurfaceMesh<PositionMaterialNormal> *mesh;
	SurfaceMesh<PositionMaterialNormal>*subdivisionMesh[8];
	bool subdivisionFlag[8];
	//polyvox_shared_ptr<SurfaceMesh<PositionMaterialNormal>> *mesh;
	MarchingCubesSurfaceExtractor<SimpleVolume<uint8_t>> *surfaceExtractor;
	Region subdivisionReg[8];

};

#endif //__BasicExample_OpenGLWidget_H__