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https://github.com/SoftFever/OrcaSlicer.git
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2ae2672ee9
Fixing dep build script on Windows and removing some warnings. Use bundled igl by default. Not building with the dependency scripts if not explicitly stated. This way, it will stay in Fix the libigl patch to include C source files in header only mode.
60 lines
2 KiB
C++
60 lines
2 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@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_FACES_FIRST_H
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#define IGL_FACES_FIRST_H
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#include "igl_inline.h"
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namespace igl
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{
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// FACES_FIRST Reorder vertices so that vertices in face list come before
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// vertices that don't appear in the face list. This is especially useful if
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// the face list contains only surface faces and you want surface vertices
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// listed before internal vertices
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//
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// [RV,RT,RF,IM] = faces_first(V,T,F);
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//
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// Templates:
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// MatV matrix for vertex positions, e.g. MatrixXd
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// MatF matrix for face indices, e.g. MatrixXi
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// VecI vector for index map, e.g. VectorXi
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// Input:
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// V # vertices by 3 vertex positions
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// F # faces by 3 list of face indices
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// Output:
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// RV # vertices by 3 vertex positions, order such that if the jth vertex is
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// some face in F, and the kth vertex is not then j comes before k
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// RF # faces by 3 list of face indices, reindexed to use RV
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// IM #V by 1 list of indices such that: RF = IM(F) and RT = IM(T)
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// and RV(IM,:) = V
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//
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//
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// Example:
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// // Tet mesh in (V,T,F)
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// faces_first(V,F,IM);
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// T = T.unaryExpr(bind1st(mem_fun( static_cast<VectorXi::Scalar&
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// (VectorXi::*)(VectorXi::Index)>(&VectorXi::operator())),
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// &IM)).eval();
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template <typename MatV, typename MatF, typename VecI>
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IGL_INLINE void faces_first(
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const MatV & V,
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const MatF & F,
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MatV & RV,
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MatF & RF,
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VecI & IM);
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// Virtual "in place" wrapper
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template <typename MatV, typename MatF, typename VecI>
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IGL_INLINE void faces_first(
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MatV & V,
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MatF & F,
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VecI & IM);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "faces_first.cpp"
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#endif
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#endif
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