[vtkusers] vtkImageResliceMapper problems

[Ang]

Hi Cory,

Below is my example .

In vtk 6.0, click right mouse down and move mouse the image position is
still in the center,

but do the same thing in vtk 6.3, the image position will be changed when
you click down and move.

Please have a check, thanks for your  assistance.

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

	vtkRenderWindow *renWin = vtkRenderWindow::New();
	vtkRenderWindowInteractor *interactor = vtkRenderWindowInteractor::New();
	vtkRenderer *renderer = vtkRenderer::New();
	vtkInteractorStyleImage *styleImage = vtkInteractorStyleImage::New();
	styleImage->SetInteractionModeToImageSlicing();
	interactor->SetInteractorStyle(styleImage);
	renWin->SetInteractor(interactor);
	renWin->AddRenderer(renderer);
	renderer->SetBackground(1, 0, 0);


	vtkImageResliceMapper *resliceMapper = vtkImageResliceMapper::New();
	vtkImageSlice *imageSlice = vtkImageSlice::New();
	vtkImageData *img = vtkImageData::New();
	img->SetDimensions(50, 50, 50);
	img->AllocateScalars(VTK_UNSIGNED_CHAR, 1);
	img->SetSpacing(1, 1, 1);

	for (int z = 0; z < img->GetDimensions()[2]; z++)
	{
		for (int x = 0; x < img->GetDimensions()[0]; x++)
		{
			for (int y = 0; y < img->GetDimensions()[1]; y++)
			{
				unsigned char *pixel = static_cast<unsigned
char*>(img->GetScalarPointer(x, y, z));

				int c0 = img->GetDimensions()[0] / 2;
				int c1 = img->GetDimensions()[1] / 2;
				int c2 = img->GetDimensions()[2] / 2;
				double pointX = (x - c0)*(x - c0);
				double pointY = (y - c1)*(y - c1);
				double pointZ = (z - c2)*(z - c2);
				if (pointX + pointY + pointZ < 15 * 15)
				{
					*pixel = 255;
				}
				else
				{
					*pixel = 0;
				}
			}
		}
	}



	imageSlice->SetMapper(resliceMapper);
	resliceMapper->SetInputData(img);
	//set reslice plane to sagittal
	resliceMapper->GetSlicePlane()->SetNormal(1, 0, 0);
	resliceMapper->GetSlicePlane()->SetOrigin(25, 0, 0); // set plane to middle

	//set camera to sagittal orientation
	renderer->GetActiveCamera()->SetFocalPoint(0, 25, 25);
	renderer->GetActiveCamera()->SetPosition(200, 25, 25);
	renderer->GetActiveCamera()->SetViewUp(0, 0, 1);
	renderer->GetActiveCamera()->SetParallelScale(75);
	renderer->GetActiveCamera()->ParallelProjectionOn();

	renderer->AddActor(imageSlice);

	renWin->Render();
	interactor->Start();
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////



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