Method loadMesh

Demos/Common/DemoBase.cpp:929–1012

}

void DemoBase::loadMesh(const std::string& filename, VertexData& vd, Utilities::IndexedFaceMesh& mesh, const Vector3r& translation,
	const Matrix3r& rotation, const Vector3r& scale)
{
	string ext = FileSystem::getFileExt(filename);
	transform(ext.begin(), ext.end(), ext.begin(), ::toupper);

	std::vector<std::array<float, 3>> x;
	if (ext == "OBJ")
	{
		std::vector<OBJLoader::Vec3f> normals;
		std::vector<OBJLoader::Vec2f> texCoords;
		std::vector<MeshFaceIndices> faces;
		OBJLoader::Vec3f s = { (float)scale[0], (float)scale[1], (float)scale[2] };
		OBJLoader::loadObj(filename, &x, &faces, &normals, &texCoords, s);

		mesh.release();
		const unsigned int nPoints = (unsigned int)x.size();
		const unsigned int nFaces = (unsigned int)faces.size();
		const unsigned int nTexCoords = (unsigned int)texCoords.size();
		mesh.initMesh(nPoints, nFaces * 2, nFaces);
		vd.reserve(nPoints);
		for (unsigned int i = 0; i < nPoints; i++)
		{
			vd.addVertex(Vector3r(x[i][0], x[i][1], x[i][2]));
		}
		for (unsigned int i = 0; i < nTexCoords; i++)
		{
			mesh.addUV(texCoords[i][0], texCoords[i][1]);
		}
		for (unsigned int i = 0; i < nFaces; i++)
		{
			int posIndices[3];
			int texIndices[3];
			for (int j = 0; j < 3; j++)
			{
				posIndices[j] = faces[i].posIndices[j];
				if (nTexCoords > 0)
				{
					texIndices[j] = faces[i].texIndices[j];
					mesh.addUVIndex(texIndices[j]);
				}
			}

			mesh.addFace(&posIndices[0]);
		}
		mesh.buildNeighbors();

		mesh.updateNormals(vd, 0);
		mesh.updateVertexNormals(vd);

		LOG_INFO << "Number of triangles: " << nFaces;
		LOG_INFO << "Number of vertices: " << nPoints;
	}
	else if (ext == "PLY")
	{
		std::vector<std::array<int, 3>> faces;
		OBJLoader::Vec3f s = { (float)scale[0], (float)scale[1], (float)scale[2] };
		PLYLoader::loadPly(filename, x, faces, s);