75 lines
1.9 KiB
C
75 lines
1.9 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) 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_VOLUME_H
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#define IGL_VOLUME_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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// VOLUME Compute volume for all tets of a given tet mesh
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// (V,T)
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//
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// vol = volume(V,T)
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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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// vol #T list 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 Derivedvol>
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IGL_INLINE void volume(
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const Eigen::MatrixBase<DerivedV>& V,
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const Eigen::MatrixBase<DerivedT>& T,
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Eigen::PlainObjectBase<Derivedvol>& vol);
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template <
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typename DerivedA,
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typename DerivedB,
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typename DerivedC,
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typename DerivedD,
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typename Derivedvol>
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IGL_INLINE void volume(
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const Eigen::MatrixBase<DerivedA> & A,
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const Eigen::MatrixBase<DerivedB> & B,
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const Eigen::MatrixBase<DerivedC> & C,
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const Eigen::MatrixBase<DerivedD> & D,
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Eigen::PlainObjectBase<Derivedvol> & vol);
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// Single tet
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template <
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typename VecA,
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typename VecB,
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typename VecC,
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typename VecD>
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IGL_INLINE typename VecA::Scalar volume_single(
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const VecA & a,
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const VecB & b,
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const VecC & c,
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const VecD & d);
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// Intrinsic version:
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//
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// Inputs:
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// L #V by 6 list of edge lengths (see edge_lengths)
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template <
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typename DerivedL,
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typename Derivedvol>
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IGL_INLINE void volume(
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const Eigen::MatrixBase<DerivedL>& L,
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Eigen::PlainObjectBase<Derivedvol>& vol);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "volume.cpp"
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#endif
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#endif
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