Function: getSliceRange()
getSliceRange(
volumeActor,viewPlaneNormal,focalPoint):ActorSliceRange
Given a vtkVolumeActor, and a normal direction,
calculate the range of slices in the focal normal direction that encapsulate
the volume. Also project the focalPoint onto this range.
Parameters
• volumeActor: vtkVolume
The vtkVolumeActor.
• viewPlaneNormal: Point3
The normal to the camera view.
• focalPoint: Point3
The focal point of the camera.
Returns
an object containing the min, max and current
positions in the normal direction.