CryEngine5.5用代码读出模型的各个数据（顶点、UV、法线等）

谁践踏了优雅 2023-10-18 09:38 82阅读 0赞

void ModelInfo()
    {
        
    	const char* fileName = "G:\\CryEngine\\CryEngine3.4.6\\Editor\\Objects\\box.cgf";
    	IStatObj* pObj = gEnv->p3DEngine->LoadStatObj(fileName);
    	
    	//Debug模式下pRM可能会获取为空值
    	IRenderMesh* pRM = pObj->GetRenderMesh();
    
    	if (pRM)
    	{
        
    		IIndexedMesh* pIM = pRM->GetIndexedMesh();
    		CMesh* pMesh = pIM->GetMesh();
    
    		/*读出模型信息*/
    
    		std::vector<Vec3> Vertices;
    		std::vector<vtx_idx> Indeices;
    		std::vector<SMeshTexCoord> TexCoords;
    		std::vector<SMeshTangents> Tangents;
    		std::vector<SMeshNormal> Normals;
    		std::vector<SMeshColor> Color0s;
    		std::vector<SMeshColor> Color1s;
    		if (pMesh->GetVertexCount())
    		{
        
    			//顶点
    			Vec3* pVertices0 = pMesh->GetStreamPtr<Vec3>(CMesh::POSITIONS);
    			int count = pMesh->GetVertexCount();
    			for (int i = 0; i < count; ++i)
    				Vertices.push_back(pVertices0[i]);
    
    			//索引
    			vtx_idx* pIndices0 = pMesh->GetStreamPtr<vtx_idx>(CMesh::INDICES);
    			int counti = pMesh->GetIndexCount();
    			for (int i = 0; i < counti; ++i)
    				Indeices.push_back(pIndices0[i]);
    
    			//纹理坐标
    			SMeshTexCoord* pTexCoords0 = pMesh->GetStreamPtr<SMeshTexCoord>(CMesh::TEXCOORDS);
    			for (int i = 0; i < count; ++i)
    				TexCoords.push_back(pTexCoords0[i]);
    
    			//切线坐标
    			SMeshTangents* pTangents = pMesh->GetStreamPtr<SMeshTangents>(CMesh::TANGENTS);
    			for (int i = 0; i < count; ++i)
    				Tangents.push_back(pTangents[i]);
    
    			//法线坐标
    			SMeshNormal* pNormal = pMesh->GetStreamPtr<SMeshNormal>(CMesh::NORMALS);
    			for (int i = 0; i < count; ++i)
    				Normals.push_back(pNormal[i]);
    
    			//颜色1
    			SMeshColor* pColor0 = pMesh->GetStreamPtr<SMeshColor>(CMesh::COLORS_0);
    			if (pColor0)
    			{
        
    				for (int i = 0; i < count; ++i)
    					Color0s.push_back(pColor0[i]);
    			}
    
    			//颜色2
    			SMeshColor* pColor1 = pMesh->GetStreamPtr<SMeshColor>(CMesh::COLORS_1);
    			if (pColor1)
    			{
        
    				for (int i = 0; i < count; ++i)
    					Color0s.push_back(pColor1[i]);
    			}
    		}
    	}
    
    }

**获取的都是数据的首地址，所以只再知道数据的size就能一个个提取出来了，size一般直接从mesh对象就可以Get到**