The box object, being one of the primary primitives
in POV, has been heavily optimized for rendering speed.
Since the box object can be scaled to any dimension it
certainly has it's advantages.
    I have experienced some weird situations creating an
object using CSG's that experienced long render times.
In reality if a CSG is done correctly it should render
almost as fast as a box.
    Look at shapes.old, shapes.inc, and shapes2.inc
for examples of using planes to createvarious shapes.
It could be you have one of your surface normals
pointing the wrong way and that would increase render
time.
    You might also try a difference instead of an
intersection.

Ken Tyler

Greg M. Johnson wrote:

> Perhaps this question is not about animations, per se, but I'm trying to
> follow a select few of these povray newsgroups.
>
> I am working on an animation.  I had the characters running on a plane.
> The render time for 50 frames was maybe 12 hours. I wanted to make them
> running instead on one long narrow strip.   I set up some CSG with the
> plane, by looking at the intersection of three planes.   The render time
> increased to over 24 hours.   I don't have the parsing vs. true render
> time, etc., in front of me.  Does CSG with infinite objects greatly
> increase overall render time?
>
> Would a 2000 unit long box take less render time than a CSG'ed plane?
>
> ________________
> Greg M. Johnson
> "Volunteer firefighters is fine, ma'am, but don't tell me
> there ain't nobody burnin' in that buildin'," said the Fire Chief to the
> Libertarian Lady.

Post a reply to this message