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55 lines
1.7 KiB
55 lines
1.7 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2014 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_DIHEDRAL_ANGLES_H
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#define IGL_DIHEDRAL_ANGLES_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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namespace igl
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{
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// DIHEDRAL_ANGLES Compute dihedral angles for all tets of a given tet mesh
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// (V,T)
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//
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// theta = dihedral_angles(V,T)
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// theta = dihedral_angles(V,T,'ParameterName',parameter_value,...)
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//
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// Inputs:
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// V #V by dim list of vertex positions
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// T #V by 4 list of tet indices
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// Outputs:
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// theta #T by 6 list of dihedral angles (in radians)
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// cos_theta #T by 6 list of cosine of dihedral angles (in radians)
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//
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template <
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typename DerivedV,
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typename DerivedT,
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typename Derivedtheta,
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typename Derivedcos_theta>
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IGL_INLINE void dihedral_angles(
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const Eigen::MatrixBase<DerivedV>& V,
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const Eigen::MatrixBase<DerivedT>& T,
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Eigen::PlainObjectBase<Derivedtheta>& theta,
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Eigen::PlainObjectBase<Derivedcos_theta>& cos_theta);
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template <
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typename DerivedL,
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typename DerivedA,
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typename Derivedtheta,
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typename Derivedcos_theta>
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IGL_INLINE void dihedral_angles_intrinsic(
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const Eigen::MatrixBase<DerivedL>& L,
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const Eigen::MatrixBase<DerivedA>& A,
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Eigen::PlainObjectBase<Derivedtheta>& theta,
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Eigen::PlainObjectBase<Derivedcos_theta>& cos_theta);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "dihedral_angles.cpp"
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#endif
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#endif
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