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assimp: Support reading tangents and binormals

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rdb 2022-11-02 22:43:15 +01:00
parent 5a483e3899
commit 162a7b2c34
1 changed files with 16 additions and 0 deletions
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16
pandatool/src/assimp/assimpLoader.cxx
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@ -721,6 +721,10 @@ load_mesh(size_t index) {
aformat->add_column(InternalName::get_texcoord_name(out.str()), 3, Geom::NT_stdfloat, Geom::C_texcoord);
}
}
if (mesh.HasTangentsAndBitangents()) {
aformat->add_column(InternalName::get_tangent(), 3, Geom::NT_stdfloat, Geom::C_vector);
aformat->add_column(InternalName::get_binormal(), 3, Geom::NT_stdfloat, Geom::C_vector);
}
PT(GeomVertexArrayFormat) tb_aformat = new GeomVertexArrayFormat;
tb_aformat->add_column(InternalName::make("transform_blend"), 1, Geom::NT_uint16, Geom::C_index);
@ -853,6 +857,18 @@ load_mesh(size_t index) {
}
}
// Now the tangents and bitangents, if any.
if (mesh.HasTangentsAndBitangents()) {
GeomVertexWriter tangent (vdata, InternalName::get_tangent());
GeomVertexWriter binormal (vdata, InternalName::get_binormal());
for (size_t i = 0; i < mesh.mNumVertices; ++i) {
const aiVector3D &tvec = mesh.mTangents[i];
const aiVector3D &bvec = mesh.mBitangents[i];
tangent.add_data3(tvec.x, tvec.y, tvec.z);
binormal.add_data3(bvec.x, bvec.y, bvec.z);
}
}
// Now the transform blend table
if (character) {
GeomVertexWriter transform_blend (vdata, InternalName::get_transform_blend());