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Merged branch 'dev_native' into lm_sla_supports_auto

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Added igl library files
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Lukas Matena 2018-10-26 15:45:52 +02:00
commit 7681d00ee5
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src/igl/seam_edges.h Normal file
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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2016 Yotam Gingold <yotam@yotamgingold.com>
//
// This Source Code Form is subject to the terms of the Mozilla Public License
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
// obtain one at http://mozilla.org/MPL/2.0/.
#ifndef IGL_SEAM_EDGES_H
#define IGL_SEAM_EDGES_H
#include "igl_inline.h"
#include <Eigen/Core>
namespace igl
{
// Finds all UV-space boundaries of a mesh.
//
// Inputs:
// V #V by dim list of positions of the input mesh.
// TC #TC by 2 list of 2D texture coordinates of the input mesh
// F #F by 3 list of triange indices into V representing a
// manifold-with-boundary triangle mesh
// FTC #F by 3 list of indices into TC for each corner
// Outputs:
// seams Edges where the forwards and backwards directions have different
// texture coordinates, as a #seams-by-4 matrix of indices. Each row is
// organized as [ forward_face_index, forward_face_vertex_index,
// backwards_face_index, backwards_face_vertex_index ] such that one side
// of the seam is the edge:
// F[ seams( i, 0 ), seams( i, 1 ) ], F[ seams( i, 0 ), (seams( i, 1 ) + 1) % 3 ]
// and the other side is the edge:
// F[ seams( i, 2 ), seams( i, 3 ) ], F[ seams( i, 2 ), (seams( i, 3 ) + 1) % 3 ]
// boundaries Edges with only one incident triangle, as a #boundaries-by-2
// matrix of indices. Each row is organized as
// [ face_index, face_vertex_index ]
// such that the edge is:
// F[ boundaries( i, 0 ), boundaries( i, 1 ) ], F[ boundaries( i, 0 ), (boundaries( i, 1 ) + 1) % 3 ]
// foldovers Edges where the two incident triangles fold over each other
// in UV-space, as a #foldovers-by-4 matrix of indices.
// Each row is organized as [ forward_face_index, forward_face_vertex_index,
// backwards_face_index, backwards_face_vertex_index ]
// such that one side of the foldover is the edge:
// F[ foldovers( i, 0 ), foldovers( i, 1 ) ], F[ foldovers( i, 0 ), (foldovers( i, 1 ) + 1) % 3 ]
// and the other side is the edge:
// F[ foldovers( i, 2 ), foldovers( i, 3 ) ], F[ foldovers( i, 2 ), (foldovers( i, 3 ) + 1) % 3 ]
template <
typename DerivedV,
typename DerivedTC,
typename DerivedF,
typename DerivedFTC,
typename Derivedseams,
typename Derivedboundaries,
typename Derivedfoldovers>
IGL_INLINE void seam_edges(
const Eigen::PlainObjectBase<DerivedV>& V,
const Eigen::PlainObjectBase<DerivedTC>& TC,
const Eigen::PlainObjectBase<DerivedF>& F,
const Eigen::PlainObjectBase<DerivedFTC>& FTC,
Eigen::PlainObjectBase<Derivedseams>& seams,
Eigen::PlainObjectBase<Derivedboundaries>& boundaries,
Eigen::PlainObjectBase<Derivedfoldovers>& foldovers);
}
#ifndef IGL_STATIC_LIBRARY
# include "seam_edges.cpp"
#endif
#endif