#ifndef __GLOBALLINESRENDERER_H
#define __GLOBALLINESRENDERER_H

#include "common.h"
#include "Containers.h"

class Beam;
class Intersectable;
class QGLPixelBuffer;

struct VssRayContainer;

namespace GtpVisibilityPreprocessor {


class __declspec(dllexport) GlobalLinesRenderer
{
	GlobalLinesRenderer(QGLPixelBuffer *buffer1, QGLPixelBuffer *buffer2);
	~GlobalLinesRenderer();

	void CastGlobalLines(Beam &beam, const int samples);

	void InitGL();

	/** Computes rays from information gained with hw sampling
	*/
	void ComputeRays(Intersectable *sourceObj, VssRayContainer &rays);

	float GetPixelError(int &pvsSize);

	int ComputePvs(ObjectContainer &objects, ObjectContainer &pvs) const;

private:

	/** Draws the geometry for one pass.
	*/
	void DrawGeometry();

	void ApplyDepthPeeling(Beam &beam, const int samples);

	void SetupProjection(const Vector3 &viewPoint, 
						 const Beam &beam);

	QGLPixelBuffer *mNewBuffer;
	QGLPixelBuffer *mOldBuffer;
};


};

#endif