43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Daniele Panozzo <daniele.panozzo@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_BARYCENTRIC2GLOBAL_H
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#define IGL_BARYCENTRIC2GLOBAL_H
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#include <igl/igl_inline.h>
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#include <Eigen/Dense>
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#include <Eigen/Sparse>
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namespace igl
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{
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// Converts barycentric coordinates in the embree form to 3D coordinates
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// Embree stores barycentric coordinates as triples: fid, bc1, bc2
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// fid is the id of a face, bc1 is the displacement of the point wrt the
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// first vertex v0 and the edge v1-v0. Similarly, bc2 is the displacement
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// wrt v2-v0.
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//
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// Input:
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// V: #Vx3 Vertices of the mesh
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// F: #Fxe Faces of the mesh
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// bc: #Xx3 Barycentric coordinates, one row per point
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//
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// Output:
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// #X: #Xx3 3D coordinates of all points in bc
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template <typename Scalar, typename Index>
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IGL_INLINE Eigen::Matrix<Scalar,Eigen::Dynamic,Eigen::Dynamic>
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barycentric_to_global(
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const Eigen::Matrix<Scalar,Eigen::Dynamic,Eigen::Dynamic> & V,
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const Eigen::Matrix<Index,Eigen::Dynamic,Eigen::Dynamic> & F,
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const Eigen::Matrix<Scalar,Eigen::Dynamic,Eigen::Dynamic> & bc);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "barycentric_to_global.cpp"
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#endif
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#endif
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