[vtkusers] vtkPolyDataToImageStencil using only one thread

[Mark Roden]

Hi all,

I have a set of contours that is getting converted into a binary
image.  This conversion process can be very lengthy, on the order of a
minute or so for ~100 large contours drawn over ~100mb of data.  The
process appears to be taking only one thread.

Is there any way to thread this process or otherwise speed it up?
Because the contours are all individual (and 2D on a 3D volume), it
seems that the chunks of work for threading would be pretty well
defined.

I'm using vtk 5.6.1 over Java.

Thanks!
Mark