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100 lines
3.8 KiB
100 lines
3.8 KiB
1 year ago
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#ifndef IGL_SCREEN_SPACE_SELECTION_H
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#define IGL_SCREEN_SPACE_SELECTION_H
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#include "igl/igl_inline.h"
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#include <Eigen/Core>
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#include <vector>
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// Forward declaration
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namespace igl { template <typename DerivedV, int DIM> class AABB; }
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namespace igl
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{
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/// Given a mesh, a camera determine which points are inside of a given 2D
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/// screen space polygon **culling points based on self-occlusion.**
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///
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/// @param[in] V #V by 3 list of mesh vertex positions
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/// @param[in] F #F by 3 list of mesh triangle indices into rows of V
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/// @param[in] tree precomputed bounding volume heirarchy
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/// @param[in] model 4 by 4 camera model-view matrix
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/// @param[in] proj 4 by 4 camera projection matrix (perspective or orthoraphic)
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/// @param[in] viewport 4-vector containing camera viewport
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/// @param[in] L #L by 2 list of 2D polygon vertices (in order)
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/// @param[out] W #V by 1 list of winding numbers (|W|>0.5 indicates inside)
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/// @param[out] and_visible #V by 1 list of visibility values (only correct for vertices
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/// with |W|>0.5)
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedM,
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typename DerivedN,
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typename DerivedO,
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typename Ltype,
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typename DerivedW,
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typename Deriveda>
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IGL_INLINE void screen_space_selection(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedF> & F,
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const igl::AABB<DerivedV, 3> & tree,
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const Eigen::MatrixBase<DerivedM>& model,
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const Eigen::MatrixBase<DerivedN>& proj,
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const Eigen::MatrixBase<DerivedO>& viewport,
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const std::vector<Eigen::Matrix<Ltype,1,2> > & L,
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Eigen::PlainObjectBase<DerivedW> & W,
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Eigen::PlainObjectBase<Deriveda> & and_visible);
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/// Given a mesh, a camera determine which points are inside of a given 2D
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/// screen space polygon
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///
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/// @param[in] V #V by 3 list of mesh vertex positions
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/// @param[in] model 4 by 4 camera model-view matrix
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/// @param[in] proj 4 by 4 camera projection matrix (perspective or orthoraphic)
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/// @param[in] viewport 4-vector containing camera viewport
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/// @param[in] L #L by 2 list of 2D polygon vertices (in order)
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/// @param[out] W #V by 1 list of winding numbers (|W|>0.5 indicates inside)
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template <
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typename DerivedV,
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typename DerivedM,
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typename DerivedN,
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typename DerivedO,
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typename Ltype,
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typename DerivedW>
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IGL_INLINE void screen_space_selection(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedM>& model,
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const Eigen::MatrixBase<DerivedN>& proj,
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const Eigen::MatrixBase<DerivedO>& viewport,
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const std::vector<Eigen::Matrix<Ltype,1,2> > & L,
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Eigen::PlainObjectBase<DerivedW> & W);
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/// Given a mesh, a camera determine which points are inside of a given 2D
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/// screen space polygon
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///
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/// @param[in] V #V by 3 list of mesh vertex positions
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/// @param[in] model 4 by 4 camera model-view matrix
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/// @param[in] proj 4 by 4 camera projection matrix (perspective or orthoraphic)
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/// @param[in] viewport 4-vector containing camera viewport
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/// @param[in] P #P by 2 list of screen space polygon vertices
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/// @param[in] E #E by 2 list of screen space edges as indices into rows of P
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/// @param[out] W #V by 1 list of winding numbers (|W|>0.5 indicates inside)
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template <
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typename DerivedV,
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typename DerivedM,
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typename DerivedN,
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typename DerivedO,
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typename DerivedP,
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typename DerivedE,
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typename DerivedW>
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IGL_INLINE void screen_space_selection(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedM>& model,
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const Eigen::MatrixBase<DerivedN>& proj,
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const Eigen::MatrixBase<DerivedO>& viewport,
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const Eigen::MatrixBase<DerivedP> & P,
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const Eigen::MatrixBase<DerivedE> & E,
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Eigen::PlainObjectBase<DerivedW> & W);
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}
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#ifndef IGL_STATIC_LIBRARY
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#include "screen_space_selection.cpp"
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#endif
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#endif
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