#include "glInterface.h"
#include "QtGlRenderer.h"
#include "Mesh.h"
#include "OcclusionQuery.h"
#include "ViewCellsManager.h"
#include "SceneGraph.h"
#include "Pvs.h"
#include "Viewcell.h"
#include "Beam.h"
#include "KdTree.h"
#include "Environment.h"
#include "RssPreprocessor.h"
#include "RssTree.h"
#include "Trackball.h"
#include "QtPreprocessorThread.h"
#include "Material.h"
#include "IntersectableWrapper.h"
#include "LogWriter.h"


#define USE_CG 1


#if USE_CG
#include <Cg/cg.h>
#include <Cg/cgGL.h>
#endif

#include <QVBoxLayout>

namespace GtpVisibilityPreprocessor {


  
class ViewCellsManager;

static CGcontext sCgContext = NULL;
static CGprogram sCgFragmentProgram = NULL;
static CGprofile sCgFragmentProfile;


//static vector<OcclusionQuery *> sQueries;

QtGlRendererWidget *rendererWidget = NULL;
QtGlDebuggerWidget *debuggerWidget = NULL;

const static int SAMPLES_INCR = 2000000;

static inline bool ilt(Intersectable *obj1, Intersectable *obj2)
{
	return obj1->mId < obj2->mId;
}


inline static bool nearerThan(ViewCell *vc1, ViewCell *vc2)
{
	return vc1->GetDistance() > vc2->GetDistance();
}


#if USE_CG
static void handleCgError() 
{
    Debug << "Cg error: " << cgGetErrorString(cgGetError()) << endl;
    exit(1);
}
#endif

void
QtGlRendererBuffer::MakeCurrent()
{
  makeCurrent();
}

void
QtGlRendererBuffer::DoneCurrent()
{
  doneCurrent();
}
  

QtGlRendererBuffer::QtGlRendererBuffer(const int w,
									   const int h,
									   SceneGraph *sceneGraph,
									   ViewCellsManager *viewcells,
									   KdTree *tree):
  QGLPixelBuffer(QSize(w, h)),
  //QGLWidget(NULL, w, h),
  GlRendererBuffer(sceneGraph, viewcells, tree)
{
  MakeCurrent();
  InitGL();
  DoneCurrent();
}


// reimplemented here so that we can snap the error windows
float
QtGlRendererBuffer::GetPixelError(int &pvsSize)
{
	float pErrorPixels = -1.0f;


	mUseFalseColors = false;
	unsigned int pixelCount;


	ViewCell *viewcell = mViewCellsManager->GetViewCell(mViewPoint);
	//  cout<<"View cell"<<viewcell<<endl;
	if (viewcell == NULL)
		return 0.0f;


	ObjectPvs pvs;

	if (1) 
		pvs = viewcell->GetPvs();
	else 
		mViewCellsManager->ApplyFilter2(viewcell, false, 1.0f, pvs);

	SetupCamera();
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
	glColorMask(GL_FALSE, GL_TRUE, GL_FALSE, GL_FALSE);


	glStencilFunc(GL_EQUAL, 0x0, 0x1);
	glStencilOp(GL_KEEP, GL_KEEP, GL_INCR); 

	// Render PVS
	ObjectPvsIterator it = pvs.GetIterator();

	pvsSize = pvs.GetSize();

	Intersectable::NewMail();
	while (it.HasMoreEntries()) 
	{
		RenderIntersectable(it.Next());
	}


	//glColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE);
	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
	glEnable(GL_STENCIL_TEST); 

	mUseFalseColors = true;

	OcclusionQuery *query = mOcclusionQueries[0];


	query->BeginQuery();

	SetupCamera();

	RenderScene();

	query->EndQuery();
	glDisable(GL_STENCIL_TEST); 
	// reenable other state
	//  int wait=0;
	//  while (!query.ResultAvailable()) {
	//  	wait++;
	//  }


	pixelCount = query->GetQueryResult();

	pErrorPixels = ((float)pixelCount)/(GetWidth()*GetHeight());


	if (mSnapErrorFrames && pErrorPixels >= 0.01f) {
		glReadBuffer(GL_BACK);

		char filename[256];
		sprintf(filename, "error-frame-%04d-%0.5f.png", mFrame, pErrorPixels);
		QImage im = toImage();
		string str = mSnapPrefix + filename;
		QString qstr(str.c_str());

		im.save(qstr, "PNG");
		if (1) { //0 && mFrame == 1543) {
			int x,y;
			int lastIndex = -1;
			for (y=0; y < im.height(); y++)
				for (x=0; x < im.width(); x++) {
					QRgb p = im.pixel(x,y);
					int index = qRed(p) + (qGreen(p)<<8) + (qBlue(p)<<16);
					if (qGreen(p) != 255 && index!=0) {
						if (index != lastIndex) {
							//				Debug<<"ei="<<index<<" ";
							lastIndex = index;
						}
					}
				}
		}


		mUseFalseColors = false;
		glPushAttrib(GL_CURRENT_BIT);
		glColor3f(0,1,0);
		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
		SetupCamera();
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

		// Render PVS
		Intersectable::NewMail();

		ObjectPvsIterator it = pvs.GetIterator();
		for (; it.HasMoreEntries(); ) 
		{
			RenderIntersectable(it.Next());
		}

		im = toImage();
		sprintf(filename, "error-frame-%04d-%0.5f-pvs.png", mFrame, pErrorPixels);
		str = mSnapPrefix + filename;
		qstr = str.c_str();
		im.save(qstr, "PNG");
		glPopAttrib();
	}

	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);

	return pErrorPixels;
}

int
QtGlRendererBuffer::ComputePvs(ObjectContainer &objects, 
							   ObjectContainer &pvs) const
{
	int pvsSize = 0;
	QImage image = toImage();
	Intersectable::NewMail();

	std::stable_sort(objects.begin(), objects.end(), ilt);

	MeshInstance dummy(NULL);

	Intersectable *obj = NULL;

	for (int x = 0; x < image.width(); ++ x)
	{
		for (int y = 0; y < image.height(); ++ y)
		{
			QRgb pix = image.pixel(x, y);
			const int id = GetId(qRed(pix), qGreen(pix), qBlue(pix));

			dummy.SetId(id);

			ObjectContainer::iterator oit =
				lower_bound(objects.begin(), objects.end(), &dummy, ilt);


			if (//(oit != oit.end()) && 
				((*oit)->GetId() == id) && 
				!obj->Mailed())
			{
				obj = *oit;
				obj->Mail();
				++ pvsSize;
				pvs.push_back(obj);
			}
		}
	}

	return pvsSize;
}


void QtGlRendererWidget::InitGL()
{
	GlRenderer::InitGL();

	GLfloat mat_ambient[]   = {  0.5, 0.5, 0.5, 1.0  };
	/*  mat_specular and mat_shininess are NOT default values	*/
	GLfloat mat_diffuse[]   = {  1.0, 1.0, 1.0, 1.0  };
	GLfloat mat_specular[]  = {  0.3, 0.3, 0.3, 1.0  };
	GLfloat mat_shininess[] = {  1.0  };

	GLfloat light_ambient[]  = {  0.2, 0.2, 0.2, 1.0  };
	GLfloat light_diffuse[]  = {  0.4, 0.4, 0.4, 1.0  };
	GLfloat light_specular[] = {  0.3, 0.3, 0.3, 1.0  };

	GLfloat lmodel_ambient[] = {  0.3, 0.3, 0.3, 1.0  };


	// default Material
	glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
	glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
	glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
	glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);

	// a light
	glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
	glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
	glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

	glLightfv(GL_LIGHT1, GL_AMBIENT, light_ambient);
	glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse);
	glLightfv(GL_LIGHT1, GL_SPECULAR, light_specular);

	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);

	glEnable(GL_LIGHTING);
	glEnable(GL_LIGHT0);
	glEnable(GL_LIGHT1);

	// set position of the light
	GLfloat infinite_light[] = {  1.0, 0.8, 1.0, 0.0  };
	glLightfv (GL_LIGHT0, GL_POSITION, infinite_light);

	// set position of the light2
	GLfloat infinite_light2[] = {  -0.3, 1.5, 1.0, 0.0  };
	glLightfv (GL_LIGHT1, GL_POSITION, infinite_light2);

	glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
	// glColorMaterial( GL_FRONT_AND_BACK, GL_SPECULAR);
	glEnable(GL_COLOR_MATERIAL);

	glShadeModel(GL_FLAT);
}


void
QtGlRendererWidget::SetupCameraProjection(const int w, const int h, const float angle)
{
	if (!mTopView) {
		int ww = w;
		int hh = h;
		glViewport(0, 0, ww, hh);
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		gluPerspective(angle, ww/(float)hh, 0.1, 2.0 * Magnitude(mSceneGraph->GetBox().Diagonal()));
		glMatrixMode(GL_MODELVIEW);
	} else {
		int ww = w;
		int hh = h;
		glViewport(0, 0, ww, hh);
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		gluPerspective(50.0, ww / (float)hh, 0.1, 20.0 * Magnitude(mSceneGraph->GetBox().Diagonal()));
		glMatrixMode(GL_MODELVIEW);
	}
}


bool QtGlRendererWidget::PvsChanged(ViewCell *viewCell) const
{
	if (viewCell != mPvsCache.mViewCell)
		return true;

	if (viewCell->GetPvs().GetSize() != mPvsCache.mUnfilteredPvsSize)
		return true;

	return false;
}


void QtGlRendererWidget::_RenderPvs()
{
	mUseFalseColors = false;

	int offset = (int)mObjects.size() * 3;
	char *arrayPtr = mUseVbos ? NULL : (char *)mData;

	glVertexPointer(3, GL_FLOAT, 0, (char *)arrayPtr);
	glNormalPointer(GL_FLOAT, 0, (char *)arrayPtr + offset * sizeof(Vector3));
	glDrawElements(GL_TRIANGLES, mIndexBufferSize, GL_UNSIGNED_INT, mIndices);
}


void QtGlRendererWidget::_UpdatePvsIndices()
{
	int indexBufferSize = 0;
	
	KdNode::NewMail();
	//Intersectable::NewMail();

	mPvsSize = mPvsCache.mPvs.GetSize();

	ObjectPvsIterator it = mPvsCache.mPvs.GetIterator();

	while (it.HasMoreEntries()) 
	{
		Intersectable *obj = it.Next();
		KdNode *node = static_cast<KdIntersectable *>(obj)->GetItem();

		_UpdatePvsIndices(node, indexBufferSize);
	}

	mIndexBufferSize = indexBufferSize;
}


void QtGlRendererWidget::_UpdatePvsIndices(KdNode *node, int &indexBufferSize)
{
	if (node->Mailed())
		return;

	node->Mail();

	// if (mObjects.size() * 3 < indexBufferSize) cerr << "problem: " << mObjects.size() * 3 << " < " << indexBufferSize << endl;
	if (!node->IsLeaf()) 
	{
		KdInterior *kdInterior = static_cast<KdInterior *>(node);

		_UpdatePvsIndices(kdInterior->mBack, indexBufferSize);
		_UpdatePvsIndices(kdInterior->mFront, indexBufferSize);
	} 
	else 
	{
		KdLeaf *leaf = static_cast<KdLeaf *>(node);

		leaf->mIndexBufferStart = indexBufferSize;

		for (size_t i = 0; i < leaf->mObjects.size(); ++ i)
		{
			TriangleIntersectable *obj = 
				static_cast<TriangleIntersectable *>(leaf->mObjects[i]);

			// check if already rendered
			/*if (!obj->Mailed())
			{
				obj->Mail();

				mIndices[indexBufferSize + 0] = (obj->GetId() - 1) * 3 + 0;
				mIndices[indexBufferSize + 1] = (obj->GetId() - 1) * 3 + 1;
				mIndices[indexBufferSize + 2] = (obj->GetId() - 1) * 3 + 2;

				indexBufferSize += 3;
			}*/
			if (obj->mRenderedFrame != mCurrentFrame)
			{
				obj->mRenderedFrame = mCurrentFrame;

				mIndices[indexBufferSize + 0] = (obj->GetId() - 1) * 3 + 0;
				mIndices[indexBufferSize + 1] = (obj->GetId() - 1) * 3 + 1;
				mIndices[indexBufferSize + 2] = (obj->GetId() - 1) * 3 + 2;

				indexBufferSize += 3;
			}
		}

		leaf->mIndexBufferSize = indexBufferSize - leaf->mIndexBufferStart;
	}

	//cout << "id: " << indexBufferSize << endl;
}


void QtGlRendererWidget::RenderPvs()
{
	if (mUseVbos) 
		glBindBufferARB(GL_ARRAY_BUFFER_ARB, mVboId);

	++ mCurrentFrame;

	EnableDrawArrays();

	//Intersectable::NewMail();
	
	if (mDetectEmptyViewSpace) 
		glEnable(GL_CULL_FACE);
	else
		glDisable(GL_CULL_FACE);

	ViewCell *viewcell = NULL;
	viewcell = mViewCellsManager->GetViewCell(mViewPoint, true);

	if (viewcell) 
	{
		// copy the pvs so that it can be filtered ...
		if (PvsChanged(viewcell)) 
		{
			mPvsCache.Reset();
			mPvsCache.mViewCell = viewcell;
			mPvsCache.mUnfilteredPvsSize = viewcell->GetPvs().GetSize();

			if (mUseSpatialFilter) 
			{
				//ObjectPvs pvs;

				//mMutex.lock();
				// mSpatialFilter size is in range 0.001 - 0.1
				mViewCellsManager->ApplyFilter2(viewcell,
					                            mUseFilter,
					                            100.0f * mSpatialFilterSize,
					                            //pvs,
												mPvsCache.mPvs,		
					                            &mPvsCache.filteredBoxes);
				//mPvsCache.mPvs = pvs;
				//mMutex.unlock();
			}
			else
			{
				mPvsCache.mPvs = viewcell->GetPvs();
			}

			/// update the indices for rendering
			_UpdatePvsIndices();

			emit PvsUpdated();
		}

		//Intersectable::NewMail();
		PvsData pvsData;

		// Render PVS
		if (mUseSpatialFilter && mRenderBoxes) 
		{
			for (int i=0; i < mPvsCache.filteredBoxes.size(); ++ i)
			{
				RenderBox(mPvsCache.filteredBoxes[i]);
			}
		} 
		else 
		{
			if (!mRenderVisibilityEstimates)
			{
				_RenderPvs();
			}
			else
			{
				mPvsSize = mPvsCache.mPvs.GetSize();

				ObjectPvsIterator it = mPvsCache.mPvs.GetIterator();

				while (it.HasMoreEntries())
				{
					Intersectable *object = it.Next(pvsData);

					//float visibility = mTransferFunction*log10(entry.mData.mSumPdf + 1); // /5.0f
					// glColor3f(visibility, 0.0f, 0.0f);
					//cerr << "sumpdf: " << pvsData.mSumPdf << endl;
					RgbColor color = RainbowColorMapping(mTransferFunction*log10(pvsData.mSumPdf + 1));
					glColor3f(color.r, color.g, color.b);

					mUseForcedColors = true;
					RenderIntersectable(object);
					mUseForcedColors = false;
				}
			}
		}

		if (mRenderFilter) 
		{
			mWireFrame = true;
			RenderIntersectable(viewcell);
			
			/*glPushMatrix();
			glTranslatef(mViewPoint.x, mViewPoint.y, mViewPoint.z);
			glScalef(5.0f,5.0f,5.0f);
			glPushAttrib(GL_CURRENT_BIT);
			glColor3f(1.0f, 0.0f, 0.0f);
			//	  gluSphere((::GLUquadric *)mSphere,
			//				1e-3*Magnitude(mViewCellsManager->GetViewSpaceBox().Size()), 6, 6);
			glPopAttrib();
			glPopMatrix();
			*/
			mWireFrame = false;
		}
	} 
	else 
	{
		/*ObjectContainer::const_iterator oi = mObjects.begin();
		for (; oi != mObjects.end(); oi++)
		RenderIntersectable(*oi);*/
		RenderScene();
	}

	//DisableDrawArrays();
	//glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
}

float
QtGlRendererWidget::RenderErrors()
{
	float pErrorPixels = -1.0f;

	SetupCamera();
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);

	glPushAttrib(GL_ENABLE_BIT);

	glStencilFunc(GL_EQUAL, 0x0, 0x1);
	glStencilOp(GL_KEEP, GL_KEEP, GL_INCR); 

	mUseForcedColors = true;

	glColor3f(0.0f, 0.8f, 0.2f);

	// Render PVS
	RenderPvs();

	glEnable(GL_STENCIL_TEST); 

	//mUseFalseColors = true;

	glDisable(GL_LIGHTING);

	OcclusionQuery *query = mOcclusionQueries[0];
	query->BeginQuery();

	SetupCamera();

	glColor3f(1.0f, 0.0f, 0.0f);

	RenderScene();

	mUseForcedColors = false;

	query->EndQuery();

	glDisable(GL_STENCIL_TEST);
	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);

	glPopAttrib();

	// reenable other state
	//  int wait=0;
	//  while (!query.ResultAvailable()) {
	//  	wait++;
	//  }

	int pixelCount = query->GetQueryResult();
	pErrorPixels = ((float)pixelCount)/(GetWidth()*GetHeight());
	if (0) cout<<"error pixels="<<pixelCount<<endl;

	mRenderError = pErrorPixels;

	return pErrorPixels;
}


void QtGlRendererWidget::timerEvent(QTimerEvent *event) 
{
	//std::cout << "Timer ID:" << event->timerId();
	update();
}


void QtGlRendererWidget::mousePressEvent(QMouseEvent *e)
{
	int x = e->pos().x();
	int y = e->pos().y();

	mousePoint.x = x;
	mousePoint.y = y;

}

void
QtGlRendererWidget::mouseMoveEvent(QMouseEvent *e)
{
	float MOVE_SENSITIVITY = Magnitude(mSceneGraph->GetBox().Diagonal())*1e-3;
	float TURN_SENSITIVITY=0.1f;
	float TILT_SENSITIVITY=32.0 ;
	float TURN_ANGLE= M_PI/36.0 ;

	int x = e->pos().x();
	int y = e->pos().y();

	int diffx = -(mousePoint.x - x);
	int diffy = -(mousePoint.y - y);

	if (e->modifiers() & Qt::ControlModifier) 
	{
		mViewPoint.y += (y-mousePoint.y)*MOVE_SENSITIVITY/2.0;
		mViewPoint.x += (x-mousePoint.x)*MOVE_SENSITIVITY/2.0;
	} 
	else 
	{
		mViewPoint += mViewDirection*((mousePoint.y - y)*MOVE_SENSITIVITY);
		float adiff = TURN_ANGLE*(x - mousePoint.x)*-TURN_SENSITIVITY;
		float angle = atan2(mViewDirection.x, mViewDirection.z);
		mViewDirection.x = sin(angle + adiff);
		mViewDirection.z = cos(angle + adiff);
	}

	mousePoint.x = x;
	mousePoint.y = y;

	updateGL();
}

void
QtGlRendererWidget::mouseReleaseEvent(QMouseEvent *)
{
}

void
QtGlRendererWidget::resizeGL(int w, int h)
{
	SetupCameraProjection(w, h);
	updateGL();
}

void
QtGlRendererWidget::paintGL()
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	if (1) 
	{
		SetupCameraProjection(width(), height());
		SetupCamera();

		if (mRenderErrors) 
		{
			RenderErrors();
		} 
		else 
		{
			glColor3f(0.6f, 0.6f, 0.6f);
			RenderPvs();
		}

		if (1 && mShowRays) 
		{
			RenderRays(mViewCellsManager->mVizBuffer.GetRays());
		}
	}

	RenderInfo();
	mFrame ++;
}


void
QtGlRendererWidget::SetupCamera()
{
	if (!mTopView)
		GlRenderer::SetupCamera();
	else {
		if (0) {
			float dist = Magnitude(mSceneGraph->GetBox().Diagonal())*0.05;
			Vector3 pos = mViewPoint - dist*Vector3(mViewDirection.x,
				-1,
				mViewDirection.y);

			Vector3 target = mViewPoint + dist*mViewDirection;
			Vector3 up(0,1,0);

			glLoadIdentity();
			gluLookAt(pos.x, pos.y, pos.z,
				target.x, target.y, target.z,
				up.x, up.y, up.z);
		} 
		else 
		{
			float dist = Magnitude(mSceneGraph->GetBox().Diagonal()) * mTopDistance;
			Vector3 pos = mViewPoint  + dist*Vector3(0,
				1,
				0);

			Vector3 target = mViewPoint;
			Vector3 up(mViewDirection.x, 0, mViewDirection.z);

			glLoadIdentity();
			gluLookAt(pos.x, pos.y, pos.z,
				target.x, target.y, target.z,
				up.x, up.y, up.z);

		}
	}

}


void
QtGlRendererWidget::keyPressEvent ( QKeyEvent * e )
{
	switch (e->key()) {
case Qt::Key_T:
	mTopView = !mTopView;
	SetupCameraProjection(width(), height());
	updateGL();
	break;
case Qt::Key_V:
	mRenderViewCells = !mRenderViewCells;
	updateGL();
	break;
case Qt::Key_P:
	// set random viewpoint
	mViewCellsManager->GetViewPoint(mViewPoint);
	updateGL();
	break;
case Qt::Key_S: {
	// set view poitn and direction
	QString text;
	bool ok;
	text.sprintf("%f %f %f", mViewPoint.x, mViewPoint.y, mViewPoint.z);
	text = QInputDialog::getText(this,
		"Enter a view point",
		"",
		QLineEdit::Normal,
		text,
		&ok);
	if (!ok)
		break;

	if (sscanf(text.toAscii(), "%f %f %f", &mViewPoint.x, &mViewPoint.y, &mViewPoint.z) == 3) {
		text.sprintf("%f %f %f", mViewDirection.x, mViewDirection.y, mViewDirection.z);
		text = QInputDialog::getText(this,
			"Enter a direction",
			"",
			QLineEdit::Normal,
			text,
			&ok);
		if (!ok)
			break;
		if (sscanf(text.toAscii(), "%f %f %f", &mViewDirection.x,
			&mViewDirection.y, &mViewDirection.z) == 3) {
				updateGL();
			}
			break;
	}
				}
default:
	e->ignore();
	break;
	}
}



QtGlRendererWidget::QtGlRendererWidget(
									   SceneGraph *sceneGraph,
									   ViewCellsManager *viewcells,
									   KdTree *tree,
									   QWidget * parent,
									   const QGLWidget * shareWidget,
									   Qt::WFlags f
									   )
									   :
GlRendererWidget(sceneGraph, viewcells, tree), QGLWidget(parent, shareWidget, f)
{
	mPreprocessorThread = NULL;
	mTopView = false;
	mRenderViewCells = false;
	mTopDistance = 1.0f;
	mCutViewCells = false;
	mCutScene = false;
	mRenderErrors = false;
	mRenderBoxes = false;
	mRenderFilter = true;
	mRenderVisibilityEstimates = false;

	mHideByCost = false;
	mUseTransparency = false;

	mTransferFunction = 1.0f;
	mIndexBufferSize = 0;

	//mCurrentFrame = 0;

	const int delay = 250; // in milliseconds
	timerId = startTimer(delay);

	bool tmp;

	Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilityFilter", tmp );
	mUseFilter = tmp;

	Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilitySpatialFilter", tmp );
	mUseSpatialFilter = tmp;

	//mLogWriter = new LogWriter("myfile.out");

	mShowRenderCost = false;
	mShowPvsSizes = false;
	mShowComparison = false;
	mShowPiercingRays = false;
	mShowWeightedRays = false;
	mShowWeightedCost = false;

	mShowDistanceWeightedPvs = true;
	mShowDistanceWeightedTriangles = false;
	mShowWeightedTriangles = false;

	mSpatialFilterSize = 0.01;
	mPvsSize = 0;
	mRenderError = 0.0f;
	mShowRays = false;

	mControlWidget = new QtRendererControlWidget(NULL);

	connect(mControlWidget, SIGNAL(SetViewCellGranularity(int)), this, SLOT(SetViewCellGranularity(int)));
	connect(mControlWidget,	SIGNAL(SetTransferFunction(int)), this,	SLOT(SetTransferFunction(int)));

	connect(mControlWidget, SIGNAL(UpdateAllPvs()), this, SLOT(UpdateAllPvs()));
	connect(mControlWidget, SIGNAL(ComputeVisibility()), this, SLOT(ComputeVisibility()));
	connect(mControlWidget, SIGNAL(StopComputation()), this, SLOT(StopComputation()));
	connect(mControlWidget, SIGNAL(SetRandomViewPoint()), this,	SLOT(SetRandomViewPoint()));
	connect(mControlWidget, SIGNAL(StoreStatistics(void)), this, SLOT(StoreStatistics(void)));

	connect(mControlWidget, SIGNAL(SetSceneCut(int)), this, SLOT(SetSceneCut(int)));
	connect(mControlWidget, SIGNAL(SetTopDistance(int)), this, SLOT(SetTopDistance(int)));
	connect(mControlWidget, SIGNAL(SetTransparency(int)), this, SLOT(SetTransparency(int)));

	connect(mControlWidget, SIGNAL(SetVisibilityFilterSize(int)), this, SLOT(SetVisibilityFilterSize(int)));
	connect(mControlWidget, SIGNAL(SetSpatialFilterSize(int)), this, SLOT(SetSpatialFilterSize(int)));
	connect(mControlWidget, SIGNAL(SetHidingCost(int)), this, SLOT(SetHidingCost(int)));

	connect(mControlWidget, SIGNAL(SetShowViewCells(bool)), this, SLOT(SetShowViewCells(bool)));
	connect(mControlWidget, SIGNAL(SetShowRenderCost(bool)), this, SLOT(SetShowRenderCost(bool)));
	connect(mControlWidget, SIGNAL(SetUseTransparency(bool)), this, SLOT(SetUseTransparency(bool)));
	connect(mControlWidget, SIGNAL(SetShowPvsSizes(bool)), this, SLOT(SetShowPvsSizes(bool)));
	connect(mControlWidget, SIGNAL(SetShowComparison(bool)), this, SLOT(SetShowComparison(bool)));
	connect(mControlWidget, SIGNAL(SetTopView(bool)), this, SLOT(SetTopView(bool)));
	connect(mControlWidget, SIGNAL(SetCutViewCells(bool)), this, SLOT(SetCutViewCells(bool)));
	connect(mControlWidget, SIGNAL(SetHideByCost(bool)), this, SLOT(SetHideByCost(bool)));
	connect(mControlWidget, SIGNAL(SetCutScene(bool)), this, SLOT(SetCutScene(bool)));
	connect(mControlWidget, SIGNAL(SetRenderErrors(bool)), this, SLOT(SetRenderErrors(bool)));
	connect(mControlWidget, SIGNAL(SetRenderBoxes(bool)), this, SLOT(SetRenderBoxes(bool)));
	connect(mControlWidget, SIGNAL(SetRenderFilter(bool)), this, SLOT(SetRenderFilter(bool)));
	connect(mControlWidget, SIGNAL(SetRenderVisibilityEstimates(bool)), this, SLOT(SetRenderVisibilityEstimates(bool)));
	connect(mControlWidget, SIGNAL(SetUseFilter(bool)), this, SLOT(SetUseFilter(bool)));
	connect(mControlWidget, SIGNAL(SetUseSpatialFilter(bool)), this, SLOT(SetUseSpatialFilter(bool)));
	connect(mControlWidget, SIGNAL(SetShowPiercingRays(bool)), this, SLOT(SetShowPiercingRays(bool)));
	connect(mControlWidget, SIGNAL(SetShowWeightedRays(bool)), this, SLOT(SetShowWeightedRays(bool)));
	connect(mControlWidget, SIGNAL(SetShowWeightedCost(bool)), this, SLOT(SetShowWeightedCost(bool)));

	connect(mControlWidget, SIGNAL(SetShowDistanceWeightedTriangles(bool)), this, SLOT(SetShowDistanceWeightedTriangles(bool)));
	connect(mControlWidget, SIGNAL(SetShowDistanceWeightedPvs(bool)), this, SLOT(SetShowDistanceWeightedPvs(bool)));
	connect(mControlWidget, SIGNAL(SetShowWeightedTriangles(bool)), this, SLOT(SetShowWeightedTriangles(bool)));

	connect(mControlWidget,
		SIGNAL(SetShowRays(bool)),
		this,
		SLOT(SetShowRays(bool)));

	resize(1000, 500);
	mControlWidget->show();
}

void
QtGlRendererWidget::UpdateAllPvs()
{
	// $$ does not work so far:(
	mViewCellsManager->UpdatePvsForEvaluation();
	//	mViewCellsManager->FinalizeViewCells(false);
}

void
QtGlRendererWidget::ComputeVisibility()
{
	cerr<<"Compute Visibility called!\n"<<endl;
	if (!mPreprocessorThread->isRunning())
		mPreprocessorThread->RunThread();
}

void
QtGlRendererWidget::StopComputation()
{
	cerr<<"stop computation called!\n"<<endl;
	mViewCellsManager->GetPreprocessor()->mStopComputation = true;
}

void
QtGlRendererWidget::SetRandomViewPoint()
{
	cerr<<"setting random view point!\n"<<endl;
	mViewCellsManager->GetViewPoint(mViewPoint);
	updateGL();
}


void QtGlRendererWidget::StoreStatistics()
{
	cerr<<"storing statistics!\n"<<endl;
	const int currentSamples = mViewCellsManager->GetPreprocessor()->mCurrentSamples;

	cout<<"**********************************************" << endl;
	cout << "reached " << currentSamples << " samples " << " => writing file" << endl;
		
	LogWriter writer;
	writer.SetFilename("compare.log");
	writer.Write(currentSamples, mViewCellsManager->GetViewCells());
	cout << "finished writing file" << endl;
	mCompareInfo.clear();
	updateGL();
}

void
QtGlRendererWidget::RenderRenderCost()
{
	static vector<float> costFunction;
	static float maxCost = -1;
	if (costFunction.size()==0) {
		ViewCellsTree *tree = mViewCellsManager->GetViewCellsTree();
		if (tree) {
			tree->GetCostFunction(costFunction);
			maxCost = -1;
			for (int i=0;  i < costFunction.size(); i++) {
				//		  cout<<i<<":"<<costFunction[i]<<" ";
				// update cost function to an absolute value based on the total geometry count
				costFunction[i]*=mSceneGraph->GetRoot()->mGeometry.size();
				if (costFunction[i] > maxCost)
					maxCost = costFunction[i];
			}
		}
	}


	int currentPos = (int)mViewCellsManager->GetViewCells().size();
	float currentCost= -1;

	if (currentPos < costFunction.size())
		currentCost = costFunction[currentPos];
#if 1	
	cout<<"costFunction.size()="<<(int)costFunction.size()<<endl;
	cout<<"CP="<<currentPos<<endl;
	cout<<"MC="<<maxCost<<endl;
	cout<<"CC="<<currentCost<<endl;
#endif
	if (costFunction.size()) {
		float scaley = 1.0f/log10(maxCost);
		float scalex = 1.0f/(float)costFunction.size();

		glDisable(GL_DEPTH_TEST);
		// init ortographic projection
		glMatrixMode(GL_PROJECTION);

		glPushMatrix();

		glLoadIdentity();
		gluOrtho2D(0, 1.0f, 0, 1.0f);

		glTranslatef(0.1f, 0.1f, 0.0f);
		glScalef(0.8f, 0.8f, 1.0f);
		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();

		glColor3f(1.0f,0,0);
		glBegin(GL_LINE_STRIP);
		//	  glVertex3f(0,0,0);

		for (int i=0;  i < costFunction.size(); i++) {
			float x =  i*scalex;
			float y = log10(costFunction[i])*scaley;
			glVertex3f(x,y,0.0f);
		}
		glEnd();

		glColor3f(1.0f,0,0);
		glBegin(GL_LINES);
		float x =  currentPos*scalex;
		glVertex3f(x,0.0,0.0f);
		glVertex3f(x,1.0f,0.0f);
		glEnd();

		glColor3f(0.0f,0,0);
		// show a grid
		glBegin(GL_LINE_LOOP);
		glVertex3f(0,0,0.0f);
		glVertex3f(1,0,0.0f);
		glVertex3f(1,1,0.0f);
		glVertex3f(0,1,0.0f);
		glEnd();

		glBegin(GL_LINES);
		for (int i=0;  i < costFunction.size(); i += 1000) {
			float x =  i*scalex;
			glVertex3f(x,0.0,0.0f);
			glVertex3f(x,1.0f,0.0f);
		}

		for (int i=0;  pow(10.0f, i) < maxCost; i+=1) {
			float y = i*scaley;
			//		QString s;
			//		s.sprintf("%d", (int)pow(10,i));
			//		renderText(width()/2+5, y*height(), s);
			glVertex3f(0.0f, y, 0.0f);
			glVertex3f(1.0f, y, 0.0f);
		}

		glEnd();


		// restore the projection matrix
		glMatrixMode(GL_PROJECTION);
		glPopMatrix();
		glMatrixMode(GL_MODELVIEW);
		glEnable(GL_DEPTH_TEST);

	}



}

void
QtGlRendererWidget::RenderInfo()
{

	QString s;
	int vc = 0;
	if (mViewCellsManager)
		vc = (int)mViewCellsManager->GetViewCells().size();

	int filter = 0;
	if (mViewCellsManager)
		filter = mViewCellsManager->GetMaxFilterSize();

	glColor3f(1.0f,1.0f,1.0f);

	s.sprintf("frame:%04d viewpoint:(%4.1f,%4.1f,%4.1f) dir:(%4.1f,%4.1f,%4.1f)",
		mFrame,
		mViewPoint.x,
		mViewPoint.y,
		mViewPoint.z,
		mViewDirection.x,
		mViewDirection.y,
		mViewDirection.z
		);

	renderText(20,20,s);

	s.sprintf("viewcells:%04d filter:%04d pvs:%04d error:%5.5f %",
		vc,
		filter,
		mPvsSize,
		mRenderError*100.0f);


	renderText(20,40,s);




}


void
QtGlRendererWidget::SetViewCellGranularity(int number)
{
	if (mViewCellsManager) {
		//  	mViewCellsManager->SetMaxFilterSize(number);

		// $$ tmp off
		mViewCellsManager->CollectViewCells(number);

		// $$ does not work so far:(
		//	mViewCellsManager->UpdatePvsForEvaluation();
		//	mViewCellsManager->FinalizeViewCells(false);
	}
	updateGL();
}

void
QtGlRendererWidget::SetVisibilityFilterSize(int number)
{
	if (mViewCellsManager) 
		mViewCellsManager->SetMaxFilterSize(number);
	mPvsCache.Reset();
	updateGL();
}

void
QtGlRendererWidget::SetSpatialFilterSize(int number)
{
	mSpatialFilterSize = 1e-3*number;
	mPvsCache.Reset();
	updateGL();
}

void
QtGlRendererWidget::SetSceneCut(int number)
{
	// assume the cut plane can only be aligned with xz plane
	// shift it along y according to number, which is percentage of the bounding
	// box position
	if (mViewCellsManager) 
	{
		const float f = number / 1000.0f;
		AxisAlignedBox3 box = mViewCellsManager->GetViewSpaceBox();
		Vector3 p = (1.0f - f) * box.Min() + f * box.Max();
		mSceneCutPlane.mNormal = Vector3(0,-1,0);
		mSceneCutPlane.mD = -DotProd(mSceneCutPlane.mNormal, p);

		updateGL();
	}
}

void
QtGlRendererWidget::SetHidingCost(int number)
{
	mHidingCost = (float)number / 1000.0f;
}


void
QtGlRendererWidget::SetTopDistance(int number)
{
	mTopDistance = number / 1000.0f;
	updateGL();
}

void QtGlRendererWidget::SetTransparency(int number)
{
	mTransparency = number / 1000.0f;
	updateGL();
}

#if 0
float QtGlRendererWidget::ComputeRenderCost(ViewCell *vc)
{
	ObjectPvs basePvs;
	
	basePvs = vc->CopyPvs();
	ObjectPvsIterator pit = basePvs.GetIterator();

	float renderCost = 0;

	//cout << "cost vis: " << mShowDistanceWeightedPvs << " " << " " << mShowDistanceWeightedTriangles << " " << mShowWeightedTriangles << endl;
	
	// first mark all objects from this pvs
	while (pit.HasMoreEntries()) 	
	{
		if (mShowDistanceWeightedPvs)
		{
			KdIntersectable *kdObj = static_cast<KdIntersectable *>(pit.Next());
			const AxisAlignedBox3 box = kdObj->GetBox();

			const float dist = SqrDistance(vc->GetBox().Center(), box.Center());
			renderCost += 1.0f / dist;
		}
		else if (mShowDistanceWeightedTriangles)
		{
			KdIntersectable *kdObj = static_cast<KdIntersectable *>(pit.Next());
			const AxisAlignedBox3 box = kdObj->GetBox();

			const float dist = SqrDistance(vc->GetBox().Center(), box.Center());
			renderCost += kdObj->ComputeNumTriangles() / dist;
		}
		else //if (mShowWeightedTriangles)
		{
			KdIntersectable *kdObj = static_cast<KdIntersectable *>(pit.Next());
			renderCost += kdObj->ComputeNumTriangles();
		}
		//if (pit.Next()->Mail();
	}

	return renderCost;
}
#else

float QtGlRendererWidget::ComputeRenderCost(ViewCell *vc)
{
	float renderCost = 0;

	if (mShowDistanceWeightedPvs)
	{
		return vc->GetPvs().mStats.mDistanceWeightedPvs;
	}
	else if (mShowDistanceWeightedTriangles)
	{
		return vc->GetPvs().mStats.mDistanceWeightedTriangles;
	}
	else //if (mShowWeightedTriangles)
	{
		return vc->GetPvs().mStats.mWeightedTriangles;
	}
}
#endif



void QtGlRendererWidget::ComputeMaxValues(const ViewCellContainer &viewCells,
										  int &maxPvs, 
										  int &maxPiercingRays, 
										  float &maxRelativeRays, 
										  float &maxRcCost)
{
	maxPvs = -1;
	maxPiercingRays = 1; // not zero for savety
	maxRelativeRays = Limits::Small; // not zero for savety
	maxRcCost = Limits::Small;

	for (size_t i = 0; i < viewCells.size(); ++ i) 
	{
		ViewCell *vc = viewCells[i];

		if (mShowPvsSizes) // pvs size
		{
			//const int p = vc->GetPvs().CountObjectsInPvs();
			const int p = vc->GetPvs().GetSize();
			if (p > maxPvs)
				maxPvs = p;
		}
		else if (mShowPiercingRays) // relative number of rays
		{
			const int piercingRays = vc->GetNumPiercingRays();

			if (piercingRays > maxPiercingRays)
				maxPiercingRays = piercingRays;
		} 
		else if (mShowWeightedRays)
		{
			const int piercingRays = vc->GetNumPiercingRays();

			const float relativeArea = 
				vc->GetBox().SurfaceArea() / mViewCellsManager->GetViewSpaceBox().SurfaceArea();

			if ((float)piercingRays / relativeArea > maxRelativeRays)
				maxRelativeRays = (float)piercingRays / relativeArea;
		}
		else if (mShowWeightedCost)
		{
			const float rcCost = ComputeRenderCost(vc);
			mViewCellsManager->UpdateScalarPvsCost(vc, rcCost);

			if (rcCost > maxRcCost)
				maxRcCost = rcCost;
		}
	}
}


void QtGlRendererWidget::RenderViewCells()
{
	mUseFalseColors = true;

	//glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT | GL_POLYGON_BIT);

	glEnable(GL_CULL_FACE);
	glCullFace(GL_FRONT);
	//glDisable(GL_CULL_FACE);

	double eq[4];
	eq[0] = mSceneCutPlane.mNormal.x;
	eq[1] = mSceneCutPlane.mNormal.y;
	eq[2] = mSceneCutPlane.mNormal.z;
	eq[3] = mSceneCutPlane.mD;

	if (mCutViewCells) 
	{
		glClipPlane(GL_CLIP_PLANE0, eq);
		glEnable(GL_CLIP_PLANE0);
	}

	ViewCellContainer &viewcells = mViewCellsManager->GetViewCells();
	
	int maxPvs, maxPiercingRays;
	float maxRelativeRays, maxRcCost;

	ComputeMaxValues(viewcells, maxPvs, maxPiercingRays, maxRelativeRays, maxRcCost);

	int i;

	if (!mShowPvsSizes && !mShowPiercingRays && !mShowWeightedRays && !mShowWeightedCost)
	{
		for (i = 0; i < viewcells.size(); ++ i) 
		{
			ViewCell *vc = viewcells[i];
			RgbColor c;

			if (!mShowPvsSizes && !mShowPiercingRays)
			{
				mWireFrame = true;
				c = vc->GetColor();
			} 

			glColor3f(c.r, c.g, c.b);

			if (!mHideByCost || (mHidingCost < (vc->GetNumPiercingRays() / (float)maxPiercingRays))) 
			{
                RenderViewCell(vc);
			}
		}
	}
	else
	{
		// transparency	
		if (!mUseTransparency)
		{
			glEnable(GL_DEPTH_TEST);
			glDisable(GL_BLEND);
		}
		else
		{
			glDisable(GL_DEPTH_TEST);
			glEnable(GL_BLEND);

			glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
			//glBlendFunc(GL_SRC_ALPHA, GL_ONE);

			for (i = 0; i < viewcells.size(); ++ i) 
			{
				ViewCell *vc = viewcells[i];

				const float dist = SqrDistance(mDummyViewPoint, vc->GetBox().Center());
				vc->SetDistance(dist);
			}

			sort(viewcells.begin(), viewcells.end(), nearerThan);
		}

		if (!mShowComparison)
			AssignImportanceByRelativeValue(viewcells, maxPvs, maxPiercingRays, maxRelativeRays, maxRcCost);
		else
		{
			if (mCompareInfo.empty())
			{
				LogReader reader;
				reader.SetFilename("compare.log");
				int samples;
				reader.Read(samples, mCompareInfo);
			}

			AssignColorByComparison(viewcells, mCompareInfo);
		}

		glEnable(GL_DEPTH_TEST);	
	}
	
	glEnable(GL_CULL_FACE);
	glDisable(GL_CULL_FACE);

	glDisable(GL_CLIP_PLANE0);

	mUseFalseColors = false;
	mWireFrame = false;

	glPopAttrib();
}


void QtGlRendererWidget::AssignImportanceByRelativeValue(const ViewCellContainer &viewCells,
														 int &maxPvs, 
														 int &maxPiercingRays, 
														 float &maxRelativeRays, 
														 float &maxRcCost)
{
	for (size_t i = 0; i < viewCells.size(); ++ i) 
	{
		RgbColor c;
		ViewCell *vc = viewCells[i];

		float importance;

		if (mShowPiercingRays)
		{
			importance = mTransferFunction *
				((float)vc->GetNumPiercingRays() / (float)maxPiercingRays);
		}
		else if (mShowWeightedRays) // relative number of rays
		{
			float relativeArea = vc->GetBox().SurfaceArea() / mViewCellsManager->GetViewSpaceBox().SurfaceArea();

			if (relativeArea < Limits::Small)
				relativeArea = Limits::Small;

			importance = mTransferFunction * ((float)vc->GetNumPiercingRays() / relativeArea) / maxRelativeRays;
		}
		else if (mShowPvsSizes) // pvs size
		{
			importance = mTransferFunction *
				((float)vc->GetPvs().GetSize() / (float)maxPvs);
		} // weighted render cost
		else if (mShowWeightedCost)
		{
			const float rcCost = mTransferFunction * ComputeRenderCost(vc);
			importance = rcCost / maxRcCost;
		}

		// c = RgbColor(importance, 1.0f - importance, 0.0f);
		c = RainbowColorMapping(importance);

		glColor4f(c.r, c.g, c.b, 1.0f - mTransparency);

		if (!mHideByCost || (mHidingCost < importance)) 
		{
			RenderViewCell(vc);
		}
	}
}


void QtGlRendererWidget::AssignColorByComparison(const ViewCellContainer &viewcells,
												 //const ViewCellInfoContainer &infos1, 
												 const ViewCellInfoContainer &compareInfo)
{
	//cout << "comparing " << viewcells.size() << " view cells to " << compareInfo.size() << " values" << endl;

	if (viewcells.size() > compareInfo.size())
	{
		cerr << "loaded size (" << compareInfo.size() << ") does not fit to view cells size (" << viewcells.size() << ")" << endl;
		return;
	}

	//const float maxRatio = 1.0f;
	const float maxRatio = 2.0f;
	const float minRatio = 0.0f;

	const float scale = 1.0f / (maxRatio - minRatio);

	for (size_t i = 0; i < viewcells.size(); ++ i) 
	{
		RgbColor c;
		ViewCell *vc = viewcells[i];

		//ViewCellInfo vc1Info = infos1[i];
		ViewCellInfo vc2Info = compareInfo[i];

		//const float vcRatio = vc->GetNumPiercingRays() / vc2Info.mPiercingRays + Limits::Small;
		float vcRatio = 1.0f;//maxRatio;
		
		if (vc2Info.mPvsSize > Limits::Small) 
			vcRatio = (float)vc->GetPvs().GetSize() / vc2Info.mPvsSize;

		// truncate here
		if (vcRatio > maxRatio) vcRatio = 1.0f;

		const float importance = (vcRatio - minRatio) * scale;
	
		if (i < 20)
		{
			cout << "pvs1: " << vc->GetPvs().GetSize() << " pvs2: " << compareInfo[i].mPvsSize << " importance: " << importance << endl;
		}

		// c = RgbColor(importance, 1.0f - importance, 0.0f);
		c = RainbowColorMapping(importance);

		glColor4f(c.r, c.g, c.b, 1.0f);

		if (1)//!mHideByCost || (mHidingCost < importance)) 
		{
			RenderViewCell(vc);
		}
	}
}



/**********************************************************************/
/*              QtRendererControlWidget implementation                */
/**********************************************************************/


QGroupBox *QtRendererControlWidget::CreateVisualizationPanel(QWidget *parent)
{
	QRadioButton *rb1, *rb2, *rb3, *rb4, *rb5;
	
	// Create a check box to be in the group box
	rb1 = new QRadioButton("piercing rays", parent);
	rb1->setText("piercing rays");
	//vl->addWidget(rb1);
	connect(rb1, SIGNAL(toggled(bool)), SIGNAL(SetShowPiercingRays(bool)));

	rb2 = new QRadioButton("pvs size", parent);
	rb2->setText("pvs size");
	connect(rb2, SIGNAL(toggled(bool)), SIGNAL(SetShowPvsSizes(bool)));

	rb3 = new QRadioButton("wireframe", parent);
	rb3->setText("wireframe");
	
	rb4 = new QRadioButton("weighted rays", parent);
	rb4->setText("weighted rays");
	connect(rb4, SIGNAL(toggled(bool)), SIGNAL(SetShowWeightedRays(bool)));
	
	rb5 = new QRadioButton("pvs cost", parent);
	rb5->setText("pvs cost");
	connect(rb5, SIGNAL(toggled(bool)), SIGNAL(SetShowWeightedCost(bool)));

	QGroupBox *groupBox = new QGroupBox("Visualization options");

	QVBoxLayout *vbox2 = new QVBoxLayout;
    
	vbox2->addWidget(rb3);
	vbox2->addWidget(rb1);
	vbox2->addWidget(rb2);
	vbox2->addWidget(rb4);
	vbox2->addWidget(rb5);
	
	rb3->setChecked(true);

	vbox2->addStretch(1);
	groupBox->setLayout(vbox2);

	return groupBox;
}



QGroupBox *QtRendererControlWidget::CreateRenderCostPanel(QWidget *parent)
{
	QRadioButton *rb1, *rb2, *rb3;
	
	// Create a check box to be in the group box
	rb1 = new QRadioButton("triangles", parent);
	rb1->setText("triangles");
	//vl->addWidget(rb1);
	connect(rb1, SIGNAL(toggled(bool)), SIGNAL(SetShowWeightedTriangles(bool)));

	rb2 = new QRadioButton("distance weighted pvs", parent);
	rb2->setText("distance weighted");
	connect(rb2, SIGNAL(toggled(bool)), SIGNAL(SetShowDistanceWeightedPvs(bool)));

	rb3 = new QRadioButton("distance weighted triangles", parent);
	rb3->setText("distance weighted triangles");
	connect(rb3, SIGNAL(toggled(bool)), SIGNAL(SetShowDistanceWeightedTriangles(bool)));

	QGroupBox *groupBox = new QGroupBox("Render cost options");

	QVBoxLayout *vbox2 = new QVBoxLayout;
    
	vbox2->addWidget(rb1);
	vbox2->addWidget(rb2);
	vbox2->addWidget(rb3);
	
	rb2->setChecked(true);

	vbox2->addStretch(1);
	groupBox->setLayout(vbox2);

	return groupBox;
}


QtRendererControlWidget::QtRendererControlWidget(QWidget * parent, Qt::WFlags f):
QWidget(parent, f)
{

	QVBoxLayout *vl = new QVBoxLayout;
	setLayout(vl);

	QWidget *vbox = new QGroupBox("ViewCells", this);
	layout()->addWidget(vbox);

	vl = new QVBoxLayout;
	vbox->setLayout(vl);

	QLabel *label = new QLabel("Granularity");
	vbox->layout()->addWidget(label);

	QSlider *slider = new QSlider(Qt::Horizontal, vbox);
	vl->addWidget(slider);
	slider->show();
	slider->setRange(1, 10000);
	slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	slider->setValue(200);

	connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetViewCellGranularity(int)));

	///////////////////////////

	label = new QLabel("Transfer function");
	vbox->layout()->addWidget(label);

	slider = new QSlider(Qt::Horizontal, vbox);
	vl->addWidget(slider);
	slider->show();
	slider->setRange(1, 10000);
	slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	slider->setValue(100);


	connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetTransferFunction(int)));

	////////////////////////////////////////7


	QPushButton *button = new QPushButton("Update all PVSs", vbox);
	vbox->layout()->addWidget(button);
	connect(button, SIGNAL(clicked()), SLOT(UpdateAllPvs()));


	////////////////////////////////////////77777

	label = new QLabel("Filter size");
	vbox->layout()->addWidget(label);

	slider = new QSlider(Qt::Horizontal, vbox);
	vbox->layout()->addWidget(slider);
	slider->show();
	slider->setRange(1, 100);
	slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	slider->setValue(3);

	connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetVisibilityFilterSize(int)));


	//////////////////////////////////////////

	label = new QLabel("Spatial Filter size");
	vbox->layout()->addWidget(label);

	slider = new QSlider(Qt::Horizontal, vbox);
	vbox->layout()->addWidget(slider);
	slider->show();
	slider->setRange(1, 100);
	slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	slider->setValue(10);

	connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetSpatialFilterSize(int)));


	///////////////////////////////////


	QWidget *hbox = new QWidget(vbox);
	vl->addWidget(hbox);
	QHBoxLayout *hlayout = new QHBoxLayout;
	hbox->setLayout(hlayout);

	QCheckBox *cb = new QCheckBox("Show viewcells", hbox);
	hlayout->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowViewCells(bool)));

	cb = new QCheckBox("Render cost curve", hbox);
	hlayout->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowRenderCost(bool)));

	cb = new QCheckBox("Show rays", hbox);
	hlayout->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowRays(bool)));
	
	cb = new QCheckBox("Show Comparison", hbox);
	hlayout->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetShowComparison(bool)));


	//////////////////

	QHBoxLayout *vh = new QHBoxLayout;

	QGroupBox *myBox = new QGroupBox("Visualization");

	myBox->setLayout(vh);
	vl->addWidget(myBox, 0, 0);

	QGroupBox *groupBox = CreateVisualizationPanel(hbox);
	vh->addWidget(groupBox, 0, 0);

	QGroupBox *groupBox2 = CreateRenderCostPanel(hbox);
	vh->addWidget(groupBox2, 0, 0);

	//////////////////////////////////


	/*cb = new QRadiobox("Top View", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetTopView(bool)));
*/

	vbox->resize(800,150);


	vbox = new QGroupBox("Rendering", this);
	layout()->addWidget(vbox);

	vl = new QVBoxLayout;
	vbox->setLayout(vl);



	cb = new QCheckBox("Cut view cells", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetCutViewCells(bool)));


	slider = new QSlider(Qt::Horizontal, vbox);
	vbox->layout()->addWidget(slider);
	slider->show();
	slider->setRange(0, 1000);
	slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	slider->setValue(1000);

	connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetSceneCut(int)));

	
	cb = new QCheckBox("Hide view cells by render cost ", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetHideByCost(bool)));

	////////////////////////////

	const int range = 1000;

	label = new QLabel("Hide by cost");
	vbox->layout()->addWidget(label);

	// the render cost visualization
	slider = new QSlider(Qt::Horizontal, vbox);
	vbox->layout()->addWidget(slider);
	slider->show();
	slider->setRange(0, range);
	slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	slider->setValue(0);
	connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetHidingCost(int)));

	///////////////////////////////////////////

	cb = new QCheckBox("Top View", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetTopView(bool)));


	label = new QLabel("Top distance");
	vbox->layout()->addWidget(label);
	
	slider = new QSlider(Qt::Horizontal, vbox);
	vbox->layout()->addWidget(slider);
	slider->show();
	slider->setRange(1, 1000);
	slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	slider->setValue(500);

	connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetTopDistance(int)));
	

	///////////////////////////////////////////

	cb = new QCheckBox("Transparency", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetUseTransparency(bool)));

	label = new QLabel("Use transparency");
	vbox->layout()->addWidget(label);

	// the render cost visualization
	slider = new QSlider(Qt::Horizontal, vbox);
	vbox->layout()->addWidget(slider);
	slider->show();
	slider->setRange(0, range);
	slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	slider->setValue(0);

	connect(slider, SIGNAL(valueChanged(int)), SIGNAL(SetTransparency(int)));

	//////////////////////////////


	cb = new QCheckBox("Cut scene", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetCutScene(bool)));

	cb = new QCheckBox("Render boxes", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderBoxes(bool)));

	cb = new QCheckBox("Render visibility estimates", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderVisibilityEstimates(bool)));


	cb = new QCheckBox("Render errors", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderErrors(bool)));


	bool tmp;

	cb = new QCheckBox("Use filter", vbox);
	vbox->layout()->addWidget(cb);
	Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilityFilter", tmp );
	cb->setChecked(tmp);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetUseFilter(bool)));


	cb = new QCheckBox("Use spatial filter", vbox);
	vbox->layout()->addWidget(cb);
	Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilitySpatialFilter",
		tmp );
	cb->setChecked(tmp);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetUseSpatialFilter(bool)));

	cb = new QCheckBox("Render filter", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(true);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(SetRenderFilter(bool)));


	/*vbox = new QGroupBox("PVS Errors", this);
	layout()->addWidget(vbox);

	vl = new QVBoxLayout;
	vbox->setLayout(vl);

	button = new QPushButton("Compute Visibility", vbox);
	vbox->layout()->addWidget(button);
	connect(button, SIGNAL(clicked()), SLOT(ComputeVisibility()));

	button = new QPushButton("Stop Computation", vbox);
	vbox->layout()->addWidget(button);
	connect(button, SIGNAL(clicked()), SLOT(StopComputation()));

	button = new QPushButton("Set Random View Point", vbox);
	vbox->layout()->addWidget(button);
	connect(button, SIGNAL(clicked()), SLOT(SetRandomViewPoint()));*/

	button = new QPushButton("Store statistics", vbox);
	vbox->layout()->addWidget(button);
	connect(button, SIGNAL(clicked()), SIGNAL(StoreStatistics()));

	/*cb = new QCheckBox("Stats", vbox);
	vbox->layout()->addWidget(cb);
	cb->setChecked(false);
	connect(cb, SIGNAL(toggled(bool)), SIGNAL(StoreStatistics()));
*/
	if (0) 
	{
		vbox = new QGroupBox("PVS Errors", this);
		layout()->addWidget(vbox);

		vl = new QVBoxLayout;
		vbox->setLayout(vl);

		mPvsErrorWidget = new QListWidget(vbox);
		vbox->layout()->addWidget(mPvsErrorWidget);

		connect(mPvsErrorWidget,
			SIGNAL(doubleClicked(const QModelIndex &)),
			this,
			SLOT(PvsErrorClicked(const QModelIndex &)));

		button = new QPushButton("Next Error Frame", vbox);
		vbox->layout()->addWidget(button);
		connect(button, SIGNAL(clicked(void)), SLOT(FocusNextPvsErrorFrame(void)));
	}
	
	//connect(button, SIGNAL(clicked(void)), SLOT(StoreStatistics(void)));
	//mHidingCost = 0.1f;

	setWindowTitle("Preprocessor Control Widget");
	adjustSize();
}




void
QtRendererControlWidget::FocusNextPvsErrorFrame(void)
{}

void
QtRendererControlWidget::UpdatePvsErrorItem(int row,
											GlRendererBuffer::PvsErrorEntry &pvsErrorEntry)
{

	QListWidgetItem *i = mPvsErrorWidget->item(row);
	QString s;
	s.sprintf("%5.5f", pvsErrorEntry.mError);
	if (i) {
		i->setText(s);
	} else {
		new QListWidgetItem(s, mPvsErrorWidget);
	}
	mPvsErrorWidget->update();
}




/*********************************************************************/
/*                   QtGlDebuggerWidget implementation               */
/*********************************************************************/


QtGlDebuggerWidget::QtGlDebuggerWidget(QtGlRendererBuffer *buf, QWidget *parent)
: QGLWidget(QGLFormat(QGL::SampleBuffers), parent), mRenderBuffer(buf)
{
	// create the pbuffer
	//pbuffer = new QGLPixelBuffer(QSize(512, 512), format(), this);
	timerId = startTimer(20);
	setWindowTitle(("OpenGL pbuffers"));
}


QtGlDebuggerWidget::~QtGlDebuggerWidget()
{
	mRenderBuffer->releaseFromDynamicTexture();
	glDeleteTextures(1, &dynamicTexture);

	DEL_PTR(mRenderBuffer);
}


void QtGlDebuggerWidget::initializeGL()
{
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();

	glFrustum(-1, 1, -1, 1, 10, 100);
	glTranslatef(-0.5f, -0.5f, -0.5f);
	glTranslatef(0.0f, 0.0f, -15.0f);
	glMatrixMode(GL_MODELVIEW);

	glEnable(GL_CULL_FACE);
	initCommon();
	initPbuffer();

}


void QtGlDebuggerWidget::resizeGL(int w, int h)
{
	glViewport(0, 0, w, h);
}


void QtGlDebuggerWidget::paintGL()
{
	// draw a spinning cube into the pbuffer..
	mRenderBuffer->makeCurrent();

	BeamSampleStatistics stats;
	mRenderBuffer->SampleBeamContributions(mSourceObject, mBeam, mSamples, stats);

	glFlush();

	// rendering directly to a texture is not supported on X11, unfortunately
	mRenderBuffer->updateDynamicTexture(dynamicTexture);

	// and use the pbuffer contents as a texture when rendering the
	// background and the bouncing cubes
	makeCurrent();
	glBindTexture(GL_TEXTURE_2D, dynamicTexture);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	// draw the background
	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();
	glLoadIdentity();
	glMatrixMode(GL_PROJECTION);
	glPushMatrix();
	glLoadIdentity();

	glPopMatrix();
	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();
}


void QtGlDebuggerWidget::initPbuffer()
{
	// set up the pbuffer context
	mRenderBuffer->makeCurrent();
	/*mRenderBuffer->InitGL();

	glViewport(0, 0, mRenderBuffer->size().width(), mRenderBuffer->size().height());
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glOrtho(-1, 1, -1, 1, -99, 99);
	glTranslatef(-0.5f, -0.5f, 0.0f);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

	glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);*/

	// generate a texture that has the same size/format as the pbuffer
	dynamicTexture = mRenderBuffer->generateDynamicTexture();

	// bind the dynamic texture to the pbuffer - this is a no-op under X11
	mRenderBuffer->bindToDynamicTexture(dynamicTexture);
	makeCurrent();
}


void QtGlDebuggerWidget::initCommon()
{
	glEnable(GL_TEXTURE_2D);
	glEnable(GL_DEPTH_TEST);

	glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
}


}