#include "bbmaracasvisuTransferFunctionView.h"
#include "bbcreaMaracasVisuPackage.h"
namespace bbcreaMaracasVisu
{

BBTK_ADD_BLACK_BOX_TO_PACKAGE(creaMaracasVisu,TransferFunctionView)
BBTK_BLACK_BOX_IMPLEMENTATION(TransferFunctionView,bbtk::WxBlackBox);

//-----------------------------------------------------
void TransferFunctionView::Process()
{

	

	

	if(bbGetInputIn()!=NULL){

		if(_currentimg != bbGetInputIn()){
			_currentimg =  bbGetInputIn();
			//mwxwidget->initializeHistogram(_currentimg);			
			mwxwidget->setImageData(_currentimg);	
			//mwxwidget->Refresh();	
		}		

		onColorChange();
		
		/*bbSetOutputGreyLevel(greylevel);
		bbSetOutputValue(value);
		bbSetOutputGreyLevelColors(greylevelcolors);
		bbSetOutputRed(red);
		bbSetOutputGreen(green);
		bbSetOutputBlue(blue);*/




	}
       	
    
}

void TransferFunctionView::onColorChange(){

	std::vector<double> greylevel;
	std::vector<double> value;

	std::vector<double> greylevelcolors;
	std::vector<double> red;
	std::vector<double> green;
	std::vector<double> blue;

	mwxwidget->GetValuesPointsFunction(greylevel, value);
	mwxwidget->GetValuesColorPointsFunction(greylevelcolors,red, green,blue);


	_tfun->RemoveAllPoints();
	for(int i = 0; i < greylevel.size();i++){
		_tfun->AddPoint(greylevel[i], value[i]);
		std::cout<<"TransferFunctionView::Process()transfer function "<<greylevel[i]<<" "<< value[i]<<std::endl;
	}
	_ctfun->RemoveAllPoints();
	_ctfun->SetScaleToLinear ();
	_ctfun->ClampingOff();
	_ctfun->AllowDuplicateScalarsOn();
	double w=mwxwidget->GetWindowLevel();
	double c=mwxwidget->GetColorLevel();

	if (greylevelcolors.size()>1)
	{
	    double min = greylevelcolors[0];
		double max = greylevelcolors[greylevelcolors.size()-1];
		double dif = max-min;
		if (dif==0) dif=0.0001;
		double nc;
		int i;
		i=0;
		_ctfun->AddRGBPoint(greylevelcolors[i], red[i],green[i], blue[i]);
		for(i = 0; i < greylevelcolors.size();i++)
		{
			nc = ((greylevelcolors[i]-min)/dif)*w + c-w/2;
//			_ctfun->AddRGBPoint(greylevelcolors[i], red[i],green[i], blue[i]);
			_ctfun->AddRGBPoint( nc , red[i],green[i], blue[i]);
		std::cout<<"EED TransferFunctionView::Process()transfer color function <<"<<nc<<" "<<red[i]<<" "<<green[i]<<" "<<blue[i]<<std::endl;
		}
		i=greylevelcolors.size()-1;
		_ctfun->AddRGBPoint( greylevelcolors[i] , red[i],green[i], blue[i]);
	}		

	bbSignalOutputModification();
	
	_tfun->Update();
	bbSetOutputOpacityFunction(_tfun);
	bbSetOutputColorFunction(_ctfun);
}

void TransferFunctionView::onSliderChange()
	{
	
		//EED
		onColorChange();

		bbSignalOutputModification();


//	bbSetOutputWindowLevel(mwxwidget->GetWindowLevel());
//	bbSetOutputColorLevel(mwxwidget->GetColorLevel());

}

//-----------------------------------------------------
void TransferFunctionView::CreateWidget(wxWindow* parent)
{
	bbtkDebugMessageInc("Core",9,"TransferFunctionView::CreateWxWindow()"<<std::endl);
	
	mwxwidget = new HistogramDialogComboBox(parent);				


	HandlerTransferFunctionView* handler = new HandlerTransferFunctionView(this);

	parent->Connect(mwxwidget->GetId(), wxEVT_COMMAND_COMBOBOX_SELECTED, (wxObjectEventFunction) (&HandlerTransferFunctionView::onColorChange),NULL,handler);
	parent->Connect(mwxwidget->GetId(), wxEVT_SCROLL_THUMBTRACK, (wxObjectEventFunction) (&HandlerTransferFunctionView::onSliderChange),NULL,handler);

    bbtkDebugDecTab("Core",9);
	bbSetOutputWidget( mwxwidget );				
}

//-----------------------------------------------------

void TransferFunctionView::bbUserSetDefaultValues()
{
	mwxwidget = NULL;
	_currentimg = NULL;

	_tfun = NULL;
	_ctfun = NULL;   

	bbSetOutputOpacityFunction(0);
	bbSetOutputColorFunction(0);

}

	
	//-----------------------------------------------------------------	
	void TransferFunctionView::bbUserInitializeProcessing()
	{
		_tfun = vtkPiecewiseFunction::New();
		_ctfun = vtkColorTransferFunction::New();  
		_ctfun->SetClamping(-1);
		bbSetInputIn(NULL);
	}
	
	//-----------------------------------------------------------------	
	void TransferFunctionView::bbUserFinalizeProcessing()
	{
	}

		
	//-----------------------------------------------------------------	
	

	HandlerTransferFunctionView::HandlerTransferFunctionView(TransferFunctionView* box)
	{
		_box = box;		
	}
	
	HandlerTransferFunctionView::~HandlerTransferFunctionView()
	{
	}	
	
	void HandlerTransferFunctionView::onColorChange(wxCommandEvent& event)
	{
		_box->onColorChange();
	}
	
	void HandlerTransferFunctionView::onSliderChange(wxCommandEvent& event)
	{
		_box->onSliderChange();
	}

}


// EO namespace bbcreaMaracasVisu