devnull wrote:
> Hi all,
> I need to color vertexes of a wrl file. This file has a ChunkMaterial with
> one MaterialChunk.
> Here is the code I use to do that:
>
> *********************************************
> ...
>
> ChunkMaterialPtr chunkMaterial = ChunkMaterialPtr::dcast(geo->getMaterial());
> MaterialChunkPtr chunk =
> MaterialChunkPtr::dcast((chunkMaterial->getChunks()).front());
> chunk->setLit(true);
> chunk->setColorMaterial(GL_DIFFUSE);
> chunk->setBackColorMaterial(GL_DIFFUSE);
>
> ...
>
> GeoColors3fPtr colors = GeoColors3f::create()
> beginEditCP(colors);
> while(...)
> if(...)
> colors->addValue(Color3f(1, 0, 0));
> else(...)
> colors->addValue(Color3f(0, 1, 0));
> endEditCP(colors);
>
> ...
> beginEditCP(geo);
> geo->setColors(colori);
> endEditCP(geo);
>
> ********************************************************
>
>
> The result is always a gray-colored mesh. I tried also to change material
> into SimpleMaterial but no changes.
> I have no problem if I use a .raw file.
>
> Can anybody write down a simple example?
the VRML loader creates Nodes with MaterialGroup cores, because that
better matches the formats semantics. In that case the materials set on
geometries below a MaterialGroup are ignored.
Since you are saying your code works for .RAW files changing the
materials in the MaterialGroups instead of the Geometry should do the trick.
Hope it helps,
Carsten
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