1 files changed, 87 insertions, 0 deletions
diff --git a/external/include/glm/gtx/intersect.hpp b/external/include/glm/gtx/intersect.hpp
new file mode 100644
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+++ b/external/include/glm/gtx/intersect.hpp
@@ -0,0 +1,87 @@
+/// @ref gtx_intersect
+/// @file glm/gtx/intersect.hpp
+///
+/// @see core (dependence)
+/// @see gtx_closest_point (dependence)
+///
+/// @defgroup gtx_intersect GLM_GTX_intersect
+/// @ingroup gtx
+///
+/// @brief Add intersection functions
+///
+/// <glm/gtx/intersect.hpp> need to be included to use these functionalities.
+
+#pragma once
+
+// Dependency:
+#include <cfloat>
+#include <limits>
+#include "../glm.hpp"
+#include "../geometric.hpp"
+#include "../gtx/closest_point.hpp"
+#include "../gtx/vector_query.hpp"
+
+#if GLM_MESSAGES == GLM_MESSAGES_ENABLED && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_GTX_closest_point extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtx_intersect
+	/// @{
+
+	//! Compute the intersection of a ray and a plane.
+	//! Ray direction and plane normal must be unit length.
+	//! From GLM_GTX_intersect extension.
+	template <typename genType>
+	GLM_FUNC_DECL bool intersectRayPlane(
+		genType const & orig, genType const & dir,
+		genType const & planeOrig, genType const & planeNormal,
+		typename genType::value_type & intersectionDistance);
+
+	//! Compute the intersection of a ray and a triangle.
+	//! From GLM_GTX_intersect extension.
+	template <typename genType>
+	GLM_FUNC_DECL bool intersectRayTriangle(
+		genType const & orig, genType const & dir,
+		genType const & vert0, genType const & vert1, genType const & vert2,
+		genType & baryPosition);
+
+	//! Compute the intersection of a line and a triangle.
+	//! From GLM_GTX_intersect extension.
+	template <typename genType>
+	GLM_FUNC_DECL bool intersectLineTriangle(
+		genType const & orig, genType const & dir,
+		genType const & vert0, genType const & vert1, genType const & vert2,
+		genType & position);
+
+	//! Compute the intersection distance of a ray and a sphere. 
+	//! The ray direction vector is unit length.
+	//! From GLM_GTX_intersect extension.
+	template <typename genType>
+	GLM_FUNC_DECL bool intersectRaySphere(
+		genType const & rayStarting, genType const & rayNormalizedDirection,
+		genType const & sphereCenter, typename genType::value_type const sphereRadiusSquered,
+		typename genType::value_type & intersectionDistance);
+
+	//! Compute the intersection of a ray and a sphere.
+	//! From GLM_GTX_intersect extension.
+	template <typename genType>
+	GLM_FUNC_DECL bool intersectRaySphere(
+		genType const & rayStarting, genType const & rayNormalizedDirection,
+		genType const & sphereCenter, const typename genType::value_type sphereRadius,
+		genType & intersectionPosition, genType & intersectionNormal);
+
+	//! Compute the intersection of a line and a sphere.
+	//! From GLM_GTX_intersect extension
+	template <typename genType>
+	GLM_FUNC_DECL bool intersectLineSphere(
+		genType const & point0, genType const & point1,
+		genType const & sphereCenter, typename genType::value_type sphereRadius,
+		genType & intersectionPosition1, genType & intersectionNormal1, 
+		genType & intersectionPosition2 = genType(), genType & intersectionNormal2 = genType());
+
+	/// @}
+}//namespace glm
+
+#include "intersect.inl"