POV-Ray : Newsgroups : povray.binaries.images : Vegetation Project WIP : Re: Vegetation Project WIP Server Time
16 Aug 2024 02:36:45 EDT (-0400)
  Re: Vegetation Project WIP  
From: Tim Nikias
Date: 27 Mar 2002 16:32:00
Message: <3CA23A57.7F69C438@gmx.de>
> Looks good.

Thank you!

> I have wanted to try this myself for a while now.
> How many triangles did you use for each blade of grass?
>

Each blade of grass consists of 20x20x2=800 smooth-triangles.

> Did combine all blades of grass into one mesh per plug, or did you keep the
> blades separate.
>

As for now, the macro generates 25 (may be set to a different value)
unique blades, each with own bend, lengths and spans. Of those, for
each little bush/patch of grass, 20 are picked, scaled, rotated and
positioned.
In this manner, it is practically impossible for two blades in any
of all generated patches to be identical.
Using 5 patches with all different blades makes it almost impossible
to spot the same mesh in a scene, making it look much more realistic.

To answer your questions, the blades are internally generated only
as arrays of vertices, later on, the different blade-data are combined
into one patch. So blades aren't seperate, I want to make a
High-Res-blade-macro (with UV-Mapping and more surface-detail) for
close-ups, this is "just" a "filler". ;-)

> Do the blades have thickness?
>

Not yet, and I'm yet pondering if it is really needed for these
low-res blades...

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html


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