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62 lines
2.4 KiB
62 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) 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_EMBREE_BONE_VISIBLE_H
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#define IGL_EMBREE_BONE_VISIBLE_H
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#include "../igl_inline.h"
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#include <Eigen/Core>
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#include "EmbreeIntersector.h"
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namespace igl
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{
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namespace embree
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{
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/// Test whether vertices of mesh are "visible" to a given bone,
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/// where "visible" is defined as in [Baran & Popovic 07]. Instead of checking
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/// whether each point can see *any* of the bone, we just check if each point
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/// can see its own projection onto the bone segment. In other words, we project
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/// each vertex v onto the bone, projv. Then we check if there are any
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/// intersections between the line segment (projv-->v) and the mesh.
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///
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/// @param[in] V #V by 3 list of vertex positions
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/// @param[in] F #F by 3 list of triangle indices
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/// @param[in] s row vector of position of start end point of bone
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/// @param[in] d row vector of position of dest end point of bone
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/// @param[out] flag #V by 1 list of bools (true) visible, (false) obstructed
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///
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/// \note This checks for hits along the segment which are facing in *any*
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/// direction from the ray.
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedSD,
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typename Derivedflag>
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IGL_INLINE void bone_visible(
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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<DerivedSD> & s,
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const Eigen::PlainObjectBase<DerivedSD> & d,
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Eigen::PlainObjectBase<Derivedflag> & flag);
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/// \overload
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/// @param[in] ei EmbreeIntersector for mesh (V,F) should be double sided
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedSD,
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typename Derivedflag>
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IGL_INLINE void bone_visible(
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const Eigen::PlainObjectBase<DerivedV> & V,
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const Eigen::PlainObjectBase<DerivedF> & F,
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const EmbreeIntersector & ei,
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const Eigen::PlainObjectBase<DerivedSD> & s,
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const Eigen::PlainObjectBase<DerivedSD> & d,
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Eigen::PlainObjectBase<Derivedflag> & flag);
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}
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "bone_visible.cpp"
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#endif
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#endif
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