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50 lines
1.8 KiB
50 lines
1.8 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2020 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_EXPLODED_VIEW_H
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#define IGL_EXPLODED_VIEW_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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// Given a tet-mesh, create a trivial surface mesh (4 triangles per tet) with
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// each tet scaled individually and translated outward from the mesh's
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// centroid, creating an exploded-view visualization.
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//
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// Inputs:
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// V #V by 3 list of tet mesh vertex positions
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// T #T by 4 list of tet mesh indices into rows of V
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// s amount to scale each tet indvidually, typically (0,1]
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// t amount to scale away from mesh's centroid, typically >=1
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// Outputs:
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// EV #T*4 by 3 list of output mesh vertex positions
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// EF #T*4 by 3 list of output triangle indices into rows of EV
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// I #EV list of indices into V revealing birth parent
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// J #EF list of indices into F revealing birth parent
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template <
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typename DerivedV,
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typename DerivedT,
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typename DerivedEV,
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typename DerivedEF,
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typename DerivedI,
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typename DerivedJ>
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IGL_INLINE void exploded_view(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedT> & T,
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const typename DerivedV::Scalar s,
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const typename DerivedV::Scalar t,
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Eigen::PlainObjectBase<DerivedEV> & EV,
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Eigen::PlainObjectBase<DerivedEF> & EF,
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Eigen::PlainObjectBase<DerivedI> & I,
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Eigen::PlainObjectBase<DerivedJ> & J);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "exploded_view.cpp"
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#endif
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#endif
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