David Whatley wrote:
> 
> Hello everyone, I hope this is the correct group.  My apologies if it is
> not.
>
> I am having some difficulty with rendering heightfields (pov and megapov do
> the same thing).  I am getting a "patchiness" large patches on slopes that
> do not conform to anything reasonable as seen in this small are of an image.
> I've eliminated everything in the scene except the heightfield (feed by an
> image) and shaded with White.  I've tried other height map images, and
> everything exhibits the same symptoms.
> 
> The problem is the dark gray patches creeping up the slope of this plateau
> which are clearly not conforming to the true shape.  In heightfields with
> gentle hills, I get the same thing (even more prominent).
> 
> Any hints?

How big is the image you are using for the HF object? If it is a low
resolution image you often see a gridding effect because there are
much fewer pixels worth of information for POV-Ray to work with. Higher
resolution (640x480 or larger) images often give better results.

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

Post a reply to this message