// This file is part of libigl, a simple c++ geometry processing library. // // Copyright (C) 2013 Alec Jacobson // // This Source Code Form is subject to the terms of the Mozilla Public License // v. 2.0. If a copy of the MPL was not distributed with this file, You can // obtain one at http://mozilla.org/MPL/2.0/. #ifndef IGL_EMBREE_BONE_VISIBLE_H #define IGL_EMBREE_BONE_VISIBLE_H #include "../igl_inline.h" #include #include "EmbreeIntersector.h" namespace igl { namespace embree { /// Test whether vertices of mesh are "visible" to a given bone, /// where "visible" is defined as in [Baran & Popovic 07]. Instead of checking /// whether each point can see *any* of the bone, we just check if each point /// can see its own projection onto the bone segment. In other words, we project /// each vertex v onto the bone, projv. Then we check if there are any /// intersections between the line segment (projv-->v) and the mesh. /// /// @param[in] V #V by 3 list of vertex positions /// @param[in] F #F by 3 list of triangle indices /// @param[in] s row vector of position of start end point of bone /// @param[in] d row vector of position of dest end point of bone /// @param[out] flag #V by 1 list of bools (true) visible, (false) obstructed /// /// \note This checks for hits along the segment which are facing in *any* /// direction from the ray. template < typename DerivedV, typename DerivedF, typename DerivedSD, typename Derivedflag> IGL_INLINE void bone_visible( const Eigen::PlainObjectBase & V, const Eigen::PlainObjectBase & F, const Eigen::PlainObjectBase & s, const Eigen::PlainObjectBase & d, Eigen::PlainObjectBase & flag); /// \overload /// @param[in] ei EmbreeIntersector for mesh (V,F) should be double sided template < typename DerivedV, typename DerivedF, typename DerivedSD, typename Derivedflag> IGL_INLINE void bone_visible( const Eigen::PlainObjectBase & V, const Eigen::PlainObjectBase & F, const EmbreeIntersector & ei, const Eigen::PlainObjectBase & s, const Eigen::PlainObjectBase & d, Eigen::PlainObjectBase & flag); } } #ifndef IGL_STATIC_LIBRARY # include "bone_visible.cpp" #endif #endif