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63 lines
2.4 KiB
63 lines
2.4 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2016 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_SWEPT_VOLUME_SIGNED_DISTANCE_H
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#define IGL_SWEPT_VOLUME_SIGNED_DISTANCE_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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#include <Eigen/Geometry>
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#include <functional>
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namespace igl
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{
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/// Compute the signed distance to a sweep surface of a mesh under-going
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/// an arbitrary motion V(t) discretely sampled at `steps`-many moments in
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/// time at a grid.
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///
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/// @param[in] V #V by 3 list of mesh positions in reference pose
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/// @param[in] F #F by 3 list of triangle indices [0,n)
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/// @param[in] transform function handle so that transform(t) returns the rigid
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/// transformation at time t∈[0,1]
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/// @param[in] steps number of time steps: steps=3 --> t∈{0,0.5,1}
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/// @param[in] GV #GV by 3 list of evaluation point grid positions
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/// @param[in] res 3-long resolution of GV grid
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/// @param[in] h edge-length of grid
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/// @param[in] isolevel isolevel to "focus" on; grid positions far enough away from
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/// isolevel (based on h) will get approximate values). Set
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/// isolevel=infinity to get good values everywhere (slow and
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/// unnecessary if just trying to extract isolevel-level set).
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/// @param[in] S0 #GV initial values (will take minimum with these), can be same
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/// as S)
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/// @param[out] S #GV list of signed distances
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IGL_INLINE void swept_volume_signed_distance(
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const Eigen::MatrixXd & V,
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const Eigen::MatrixXi & F,
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const std::function<Eigen::Affine3d(const double t)> & transform,
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const size_t & steps,
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const Eigen::MatrixXd & GV,
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const Eigen::RowVector3i & res,
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const double h,
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const double isolevel,
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const Eigen::VectorXd & S0,
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Eigen::VectorXd & S);
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/// \overload
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IGL_INLINE void swept_volume_signed_distance(
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const Eigen::MatrixXd & V,
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const Eigen::MatrixXi & F,
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const std::function<Eigen::Affine3d(const double t)> & transform,
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const size_t & steps,
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const Eigen::MatrixXd & GV,
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const Eigen::RowVector3i & res,
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const double h,
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const double isolevel,
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Eigen::VectorXd & S);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "swept_volume_signed_distance.cpp"
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#endif
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#endif
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