In article <3AA0CFB4.F8F047C3@simberon.com>, David Buck 
<dav### [at] simberoncom> wrote:

> Cloth is simulated over time - a static model is not.  If cloth were 
> implemented in POV, you would have to specify how much time you want 
> to step the simulation before doing the rendering. 

My particle_system patch is also a dynamic system...you specify the 
number of iterations to use and the amount of time it spans.


> Too little time means that the cloth hasn't finished falling and 
> covering the area. Too much time and the cloth could have fallen 
> right off your surface. If you were to create an animation with 
> cloth, you would have to simulate from the start of the cloth 
> simulation to the proper point in the scene. Unless you have some 
> way of rendering multiple scenes in POV without stopping, you'd have 
> to recalculate that each frame and it would take longer each time.

You mean rendering without constantly re-parsing the scene? That isn't 
possible yet, but you can render multiple images without recomputing the 
entire cloth system each time. Either save the system to a file at each 
frame with a save_file keyword, like radiosity or photon mapping, or 
assign it to a persistent variable that is saved from frame to frame.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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