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51 lines
1.6 KiB
51 lines
1.6 KiB
1 year ago
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#ifndef IGL_RAY_TRIANGLE_INTERSECT_H
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#define IGL_RAY_TRIANGLE_INTERSECT_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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/// Determine whether (and if so where) a ray intersects a triangle at a
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/// single point.
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///
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/// @param[in] O 3d origin of ray
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/// @param[in] D 3d direction of ray
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/// @param[in] V0 3d position of first triangle vertex
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/// @param[in] V1 3d position of second triangle vertex
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/// @param[in] V2 3d position of third triangle vertex
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/// @param[in] epsilon epsilon for determining whether ray is parallel to
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/// triangle
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/// @param[out] t distance along ray to intersection (if any)
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/// @param[out] u barycentric coordinate of V1 triangle vertex
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/// @param[out] v barycentric coordinate of V2 triangle vertex
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/// @param[out] parallel whether ray was considered parallel to triangle (and
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/// if so then will return false)
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/// @returns true if ray intersects triangle
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///
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///
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template <
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typename DerivedO,
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typename DerivedD,
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typename DerivedV0,
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typename DerivedV1,
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typename DerivedV2>
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IGL_INLINE bool ray_triangle_intersect(
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const Eigen::MatrixBase<DerivedO> & O,
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const Eigen::MatrixBase<DerivedD> & D,
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const Eigen::MatrixBase<DerivedV0> & V0,
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const Eigen::MatrixBase<DerivedV1> & V1,
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const Eigen::MatrixBase<DerivedV2> & V2,
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const typename DerivedO::Scalar epsilon,
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typename DerivedO::Scalar & t,
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typename DerivedO::Scalar & u,
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typename DerivedO::Scalar & v,
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bool & parallel);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "ray_triangle_intersect.cpp"
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#endif
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#endif
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