[vtkusers] vtkGPUVolumeRayCastMapper: Updateing ImageData after first Rendering?

[Willy]

I Changed (619-626 in my last post):

// Cache the array's scalar range
for (int n = 0; n < noOfComponents; ++n)
{
	double* range = this->Scalars->GetRange(n);
	for (int i = 0; i < 2; ++i)
	{
		this->ScalarRange[n][i] = range[i];
	}
}

to

  if(scalarType == VTK_UNSIGNED_CHAR){
	for (int n = 0; n < noOfComponents; ++n) {
      this->ScalarRange[n][0] = 0;
      this->ScalarRange[n][1] = 255;
    }
  }else if(scalarType == VTK_UNSIGNED_SHORT){
	for (int n = 0; n < noOfComponents; ++n) {
      this->ScalarRange[n][0] = 0;
      this->ScalarRange[n][1] = 65535;
    }
  }else {
	  // Cache the array's scalar range
	  for (int n = 0; n < noOfComponents; ++n)
	  {
		double* range = this->Scalars->GetRange(n);
		for (int i = 0; i < 2; ++i)
		{
		  this->ScalarRange[n][i] = range[i];
		}
	  }
  }

I dont know if thats the correct way to do it, but for me it seems to work.

Willy



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