PackPrimVerticesFromSparseInputs()

bool Spices::MeshProcessor::PackPrimVerticesFromSparseInputs ( MeshPack * meshPack, const std::vector< glm::uvec3 > primVertices, std::vector< glm::vec3 > & packPoints, std::vector< glm::uvec3 > & packPrimPoints, std::unordered_map< uint32_t, uint32_t > & primVerticesMapReverse )

staticprivate

Pack PrimVertices from Sparse PrimVertices Inputs.

Parameters

[in]	meshPack	MeshPack.
[in]	primVertices	.
[in,out]	packPoints	.
[in,out]	packPrimPoints

param [in,out] primVerticesMapReverse .

Returns

Returns true if succeed.

Merge Vertex.

Flatten Vertex Position.

Merge Vertex.

Flatten Vertex Position.

Definition at line 935 of file MeshProcessor.cpp.

    {
        SPICES_PROFILE_ZONE;
 
        std::unordered_map<uint32_t, uint32_t> primVerticesMap;   // old: primVertexIndex  , new: primPointIndex
        for (auto& primVertex : primVertices)
        {
            if (primVerticesMap.find(primVertex.x) == primVerticesMap.end()) primVerticesMap[primVertex.x] = primVerticesMap.size();
            if (primVerticesMap.find(primVertex.y) == primVerticesMap.end()) primVerticesMap[primVertex.y] = primVerticesMap.size();
            if (primVerticesMap.find(primVertex.z) == primVerticesMap.end()) primVerticesMap[primVertex.z] = primVerticesMap.size();
        }
        
        packPoints.resize(primVerticesMap.size());
        auto& vertices = *meshPack->m_MeshResource.vertices.attributes;
        for (auto& pair : primVerticesMap)
        {
            packPoints[pair.second] = (*meshPack->m_MeshResource.positions.attributes)[vertices[pair.first].x];
            primVerticesMapReverse[pair.second] = pair.first;
        }
        
        packPrimPoints.resize(primVertices.size());
        for (int i = 0; i < primVertices.size(); i++)
        {
            glm::uvec3 primVertex = primVertices[i];
        
            packPrimPoints[i].x = primVerticesMap[primVertex.x];
            packPrimPoints[i].y = primVerticesMap[primVertex.y];
            packPrimPoints[i].z = primVerticesMap[primVertex.z];
        }
 
        return true;
    }