[vtkusers] Assigning Colors in Volume Rendering

[prabhat246]

Hi,
           I am using following code for volume rendering of Binary Image
which has only two scalar values -3024 and -3023. But the output In am
getting is  black and gray color. How can I get black and white only??  

           vtkColorTransferFunction *cTFun =
vtkColorTransferFunction::New();
	cTFun->SetVectorModeToMagnitude();
	cTFun->AddRGBPoint(  -3024.0, 0.0, 0.0, 0.0 );  
	cTFun->AddRGBPoint(  -3023.0, 1.0, 1.0, 1.0 ); 

           vtkVolumeProperty *volumeProperty = vtkVolumeProperty::New();
	volumeProperty->SetColor(cTFun);
	//volumeProperty->SetGradientOpacity(goTFun);
	volumeProperty->SetScalarOpacity(oTFun);
	volumeProperty->ShadeOn();


Thanks,
Regards
Prabhat
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