1 ///////////////////////////////////////////////////////////////////////////////////
2 /// OpenGL Mathematics (glm.g-truc.net)
3 ///
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22 ///
23 /// @ref gtx_intersect
24 /// @file glm/gtx/intersect.hpp
25 /// @date 2007-04-03 / 2011-06-07
26 /// @author Christophe Riccio
27 ///
28 /// @see core (dependence)
29 /// @see gtx_closest_point (dependence)
30 ///
31 /// @defgroup gtx_intersect GLM_GTX_intersect
32 /// @ingroup gtx
33 ///
34 /// @brief Add intersection functions
35 ///
36 /// <glm/gtx/intersect.hpp> need to be included to use these functionalities.
37 ///////////////////////////////////////////////////////////////////////////////////
38 
39 #ifndef GLM_GTX_intersect
40 #define GLM_GTX_intersect
41 
42 // Dependency:
43 #include "../glm.hpp"
44 #include "../gtx/closest_point.hpp"
45 
46 #if(defined(GLM_MESSAGES) && !defined(GLM_EXT_INCLUDED))
47 #	pragma message("GLM: GLM_GTX_closest_point extension included")
48 #endif
49 
50 namespace glm
51 {
52 	/// @addtogroup gtx_intersect
53 	/// @{
54 
55 	//! Compute the intersection of a ray and a triangle.
56 	//! Ray direction and plane normal must be unit length.
57 	//! From GLM_GTX_intersect extension.
58 	template <typename genType>
59 	GLM_FUNC_DECL bool intersectRayPlane(
60 		genType const & orig, genType const & dir,
61 		genType const & planeOrig, genType const & planeNormal,
62 		typename genType::value_type & intersectionDistance);
63 
64 	//! Compute the intersection of a ray and a triangle.
65 	//! From GLM_GTX_intersect extension.
66 	template <typename genType>
67 	GLM_FUNC_DECL bool intersectRayTriangle(
68 		genType const & orig, genType const & dir,
69 		genType const & vert0, genType const & vert1, genType const & vert2,
70 		genType & baryPosition);
71 
72 	//! Compute the intersection of a line and a triangle.
73 	//! From GLM_GTX_intersect extension.
74 	template <typename genType>
75 	GLM_FUNC_DECL bool intersectLineTriangle(
76 		genType const & orig, genType const & dir,
77 		genType const & vert0, genType const & vert1, genType const & vert2,
78 		genType & position);
79 
80 	//! Compute the intersection distance of a ray and a sphere.
81 	//! The ray direction vector is unit length.
82 	//! From GLM_GTX_intersect extension.
83 	template <typename genType>
84 	GLM_FUNC_DECL bool intersectRaySphere(
85 		genType const & rayStarting, genType const & rayNormalizedDirection,
86 		genType const & sphereCenter, typename genType::value_type const sphereRadiusSquered,
87 		typename genType::value_type & intersectionDistance);
88 
89 	//! Compute the intersection of a ray and a sphere.
90 	//! From GLM_GTX_intersect extension.
91 	template <typename genType>
92 	GLM_FUNC_DECL bool intersectRaySphere(
93 		genType const & rayStarting, genType const & rayNormalizedDirection,
94 		genType const & sphereCenter, const typename genType::value_type sphereRadius,
95 		genType & intersectionPosition, genType & intersectionNormal);
96 
97 	//! Compute the intersection of a line and a sphere.
98 	//! From GLM_GTX_intersect extension
99 	template <typename genType>
100 	GLM_FUNC_DECL bool intersectLineSphere(
101 		genType const & point0, genType const & point1,
102 		genType const & sphereCenter, typename genType::value_type sphereRadius,
103 		genType & intersectionPosition1, genType & intersectionNormal1,
104 		genType & intersectionPosition2 = genType(), genType & intersectionNormal2 = genType());
105 
106 	/// @}
107 }//namespace glm
108 
109 #include "intersect.inl"
110 
111 #endif//GLM_GTX_intersect
112