65 lines
2.2 KiB
C++
65 lines
2.2 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_PER_CORNER_NORMALS_H
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#define IGL_PER_CORNER_NORMALS_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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#include <vector>
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namespace igl
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{
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// Compute vertex normals via vertex position list, face list
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// Inputs:
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// V #V by 3 eigen Matrix of mesh vertex 3D positions
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// F #F by 3 eigen Matrix of face (triangle) indices
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// corner_threshold threshold in degrees on sharp angles
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// Output:
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// CN #F*3 by 3 eigen Matrix of mesh vertex 3D normals, where the normal
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// for corner F(i,j) is at CN(i*3+j,:)
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template <typename DerivedV, typename DerivedF, typename DerivedCN>
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IGL_INLINE void per_corner_normals(
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const Eigen::PlainObjectBase<DerivedV>& V,
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const Eigen::PlainObjectBase<DerivedF>& F,
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const double corner_threshold,
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Eigen::PlainObjectBase<DerivedCN> & CN);
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// Other Inputs:
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// FN #F by 3 eigen Matrix of face normals
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedFN,
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typename DerivedCN>
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IGL_INLINE void per_corner_normals(
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const Eigen::PlainObjectBase<DerivedV>& V,
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const Eigen::PlainObjectBase<DerivedF>& F,
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const Eigen::PlainObjectBase<DerivedFN>& FN,
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const double corner_threshold,
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Eigen::PlainObjectBase<DerivedCN> & CN);
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// Other Inputs:
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// VF map from vertices to list of incident faces
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedFN,
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typename IndexType,
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typename DerivedCN>
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IGL_INLINE void per_corner_normals(
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const Eigen::PlainObjectBase<DerivedV>& V,
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const Eigen::PlainObjectBase<DerivedF>& F,
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const Eigen::PlainObjectBase<DerivedFN>& FN,
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const std::vector<std::vector<IndexType> >& VF,
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const double corner_threshold,
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Eigen::PlainObjectBase<DerivedCN> & CN);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "per_corner_normals.cpp"
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#endif
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#endif
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