How can I make a picture without colors.
Are your last two posts related?
If so, it might sound like you are looking for the ShowZBuffer command.
But please, provide some more information…
Are you on Mac or Windows?
Hi Narek - if you mean a gray scale image, you can use the post processing panel in the Rhino render window to remove all saturation from the image-
For a Zbuffer image for use in a heightfield, show the ‘Distance channel’ in the render window.