/**
 *  \file
 *  \brief Class bbtk::ThresholdImageView .
 */

#include "LayerImageBase.h"

LayerImageBase::LayerImageBase()
{
	_actorPresent			=	false;
	_Z						=	0;
	_thresholdTable			=	NULL;
	_thresholdMapper		=	NULL;
	_thresholdActor			=	NULL;
	_image					=	NULL;
	_baseView               =   NULL;
	_imageReslicer			=	vtkImageReslice::New();

}

//----------------------------------------------------------------------------
  LayerImageBase::~LayerImageBase()
  {
  }

//----------------------------------------------------------------------------
void LayerImageBase::SetZ(int z)
{
	_Z = z;
}

//----------------------------------------------------------------------------
int LayerImageBase::GetZ()  // virtual
{
	return _Z;
}

//----------------------------------------------------------------------------
vtkImageData* LayerImageBase::GetImage()
{
	return _image;
}

//----------------------------------------------------------------------------
bool LayerImageBase::GetActorPresent()
{
	return _actorPresent;
}



//----------------------------------------------------------------------------
void LayerImageBase::SetImage(vtkImageData* image)
{
	_image = image;
}

//----------------------------------------------------------------------------
void LayerImageBase::SetwxVtkBaseView(wxVtkBaseView *baseview)
{
	_baseView = baseview;
}

//----------------------------------------------------------------------------
wxVtkBaseView *LayerImageBase::GetwxVtkBaseView()
{
	return _baseView;
}

//----------------------------------------------------------------------------
void LayerImageBase::Refresh()
{
    if (_baseView!=NULL)
    {
        _baseView->Refresh();
    }
}


//----------------------------------------------------------------------------
vtkLookupTable* LayerImageBase::GetThresholdTable()
{
	return _thresholdTable;
}

//----------------------------------------------------------------------------
int LayerImageBase::CleanZ(int z)
{
	int ext[6];
	_image->GetWholeExtent(ext);

	if (z<0)
	{
		z=0;
	}

	if ( z > (ext[5]-ext[4]) )
	{
		z=ext[5]-ext[4];
	}

	return z;
}

//----------------------------------------------------------------------------
void LayerImageBase::onThreshold()
{

	if ((_image!=NULL) && (_baseView!=NULL))
	{
		int z=CleanZ( GetZ() );

		if (!GetActorPresent())
		{
			if (_thresholdTable==NULL)
			{
				//Lookup Table
				_thresholdTable = vtkLookupTable::New();
			} // _thresholdTable

			if (_thresholdMapper==NULL)
			{
				_thresholdMapper = vtkImageMapToColors::New( );
			}

			if (_thresholdActor==NULL)
			{
				_thresholdActor = vtkImageActor::New( );
				_thresholdActor->SetOpacity( 0.6 );
				_thresholdActor->InterpolateOn(  );
				_thresholdActor->SetPosition( 0,0, 900-1 );
			} // _thresholdActor
			_baseView->GetRenderer()->AddActor( _thresholdActor );
			_actorPresent = true;
		}  // !GetActorPresent()

		ConfigLookupTable();  // virtual method
		_imageReslicer->SetInput( GetImage() );
		_imageReslicer->SetInformationInput( GetImage() );
		_imageReslicer->SetResliceAxesDirectionCosines(1,0,0, 0,1,0 ,0,0,1);
		_imageReslicer->SetOutputDimensionality(2);
		_imageReslicer->SetInterpolationModeToLinear();
		_imageReslicer->SetResliceAxesOrigin(0,0,z);

		vtkImageData *img = _imageReslicer->GetOutput();
		img->Update();
		img->UpdateInformation();

		_thresholdMapper->SetInput( img );
		_thresholdMapper->SetLookupTable( _thresholdTable );
		_thresholdActor->SetInput( _thresholdMapper->GetOutput() );
		} // _image
}



//----------------------------------------------------------------------------
void LayerImageBase::onThresholdChange()
{
	if (_actorPresent)
	{
		onThreshold();
	}
}

//----------------------------------------------------------------------------
void LayerImageBase::onThresholdInterpolation(bool interpolate)
{
	if (_thresholdActor!=NULL)
	{
		if (interpolate)
		{
			_thresholdActor->InterpolateOn( );
		}
		else
		{
			_thresholdActor->InterpolateOff( );
		}
	}
}

//----------------------------------------------------------------------------
void LayerImageBase::onThresholdChangeOpacity (int opacity)
{
	if (_actorPresent)
	{
		_thresholdActor->SetOpacity(opacity*0.1);
	}
}

//----------------------------------------------------------------------------
void LayerImageBase::onThresholdRemove()
{
	if (_actorPresent)
	{
		wxVtkBaseView * baseView = _baseView;
		baseView->GetRenderer()->RemoveActor( _thresholdActor );
		_actorPresent = false;
	}
}




// EOF