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Le 16/08/2011 08:30, Saket a écrit :
>> Just an idea: keep the sponge dry and add filtering/transmitting spheres
>> based on wetness.
>> If dry->wet darkens, a normal filtering is fine. (range 0 to 1)
>> If dry->wet lighten, you need a filtering factor which multiply the
>> actual colour.
(actually, that would be a transmit factor > 1)
>>
>> If the triangle mesh was open to update with its own texture (no need to
>> UV map), it would be a simpler issue of using a palette of texture based
>> on wetness.
>
> Hi,
>
> Thanks for the reply.
>
> As to your first point are you suggesting adding filtering spheres outside every
> wet triangle?
I'm dumber. outside every wet vertex. (yes, a lot of tiny spheres!)
You need to raise max_trace_level a lot if not using version 3.7;
>
> Can you explain your last point?
Mesh can have a texture per vertex (see the mesh2 syntax).
> mesh2 {
> vertex_vectors {
> 9,
> <0,0,0>, <0.5,0,0>, <0.5,0.5,0>,
> <1,0,0>, <1,0.5,0>, <1,1,0>
> <0.5,1,0>, <0,1,0>, <0,0.5,0>
> }
> texture_list {
> 3,
> texture{pigment{rgb <0,0,1>}}
> texture{pigment{rgb 1}}
> texture{pigment{rgb <1,0,0>}}
> }
> face_indices {
> 8,
> <0,1,2>,0,1,2, <1,3,2>,1,0,2,
> <3,4,2>,0,1,2, <4,5,2>,1,0,2,
> <5,6,2>,0,1,2, <6,7,2>,1,0,2,
> <7,8,2>,0,1,2, <8,0,2>,1,0,2
> }
> }
Assuming you start with a dry mesh with a texture list of 10 textures,
and you have 20 degrees of wetness (per dry texture),
the dry-mesh with 10 textures would transform into a dry-and-wet-mesh
with 200 textures.
On the specification of the face_indices, your program would simply put
the right texture index according to the original mesh and the wetness.
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