Le 2026-07-29 à 07:33, Maetes a écrit :
> Hi Ladies
> 
> I'm currently trying to design an asteroid.
> 
> I created the mesh with the rock generator from John "Evil Snack", see website:
> https://www.geocities.ws/evilsnack/inc.htm
> 
> The result looks reasonably good, but improvements would be possible.
> Maybe one of you has some ideas.
> 
> 1. Dark triangles
> Especially in movies you can see that it is built up of triangles.
> First they are black, and less than a degree of rotation further they are
> bright.
> This may not be particularly noticeable in individual frames, but in movies it
> is annoying.
> I have already set the number of triangles very high, more is hardly possible.
> Are there other ways to improve the mesh or other scripts to create it?

Unavoidable when using meshes. Those dark/black triangles are just 
triangles that are physically facing away from the light, even if their 
normals are oriented toward the light.
Using an area_light with the area_illumination MAY help. Adjust the 
extent of the light until your results are acceptable. That area_light 
need to have the circular attribute. Be sure to use adaptive 0. Don't 
fear using something like 65x65, or more, for the number of elements. 
With adaptive 0, most of the time, only the corners will be evaluated.

> 
> 2. Textures
> I've already played around with textures a bit, but I'm not completely
> satisfied.
> Does anyone have any textures for a similar use that they would like to share?

As a lot of asteroids are really just big balls of gravel, some gravel 
based textures should be pretty realistic.

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