Hello VTK Folks,
I’ve got 512 by 512 images of around ~200 frames I’ve put into a vtkImageData. The frame are spaced apart in physical space so I’d like to scale the rendered volume along the Z axis. Use imageData.setSpacing([1, 1, 10]) yeah?
But when I use the mouse wheel to zoom in with the default trackball interactor and look along the Z axis, the volume render appears “clipped.” I get the same effect with Examples\Volume\VolumeMapperParallelProjection when I add the setSpacing or scale the volume actor like so:
vtk-js\Examples\Volume\VolumeMapperParallelProjection
reader
.setUrl('https://kitware.github.io/vtk-js/data/volume/LIDC2.vti')
.then(() => {
reader.loadData().then(() => {
const imageData = reader.getOutputData();
// imageData.setSpacing([1, 1, 7.5]); // small clip volume when zoomed
actor.setScale([1, 1, 7.5]); // same
Normal actors (non-volume) render just fine. How should I non-uniformly scale ImageData for volume rendering?
Update: When toggling ON parallel projection, the clipping goes away.
Much thanks for any advice,
Paul