1 files changed, 57 insertions, 0 deletions
diff --git a/src/include/glm/gtx/vector_angle.hpp b/src/include/glm/gtx/vector_angle.hpp
new file mode 100644
index 0000000..ae17916
--- /dev/null
+++ b/src/include/glm/gtx/vector_angle.hpp
@@ -0,0 +1,57 @@
+/// @ref gtx_vector_angle
+/// @file glm/gtx/vector_angle.hpp
+///
+/// @see core (dependence)
+/// @see gtx_quaternion (dependence)
+/// @see gtx_epsilon (dependence)
+///
+/// @defgroup gtx_vector_angle GLM_GTX_vector_angle
+/// @ingroup gtx
+///
+/// Include <glm/gtx/vector_angle.hpp> to use the features of this extension.
+///
+/// Compute angle between vectors
+
+#pragma once
+
+// Dependency:
+#include "../glm.hpp"
+#include "../gtc/epsilon.hpp"
+#include "../gtx/quaternion.hpp"
+#include "../gtx/rotate_vector.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	ifndef GLM_ENABLE_EXPERIMENTAL
+#		pragma message("GLM: GLM_GTX_vector_angle is an experimental extension and may change in the future. Use #define GLM_ENABLE_EXPERIMENTAL before including it, if you really want to use it.")
+#	else
+#		pragma message("GLM: GLM_GTX_vector_angle extension included")
+#	endif
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtx_vector_angle
+	/// @{
+
+	//! Returns the absolute angle between two vectors.
+	//! Parameters need to be normalized.
+	/// @see gtx_vector_angle extension.
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_DECL T angle(vec<L, T, Q> const& x, vec<L, T, Q> const& y);
+
+	//! Returns the oriented angle between two 2d vectors.
+	//! Parameters need to be normalized.
+	/// @see gtx_vector_angle extension.
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL T orientedAngle(vec<2, T, Q> const& x, vec<2, T, Q> const& y);
+
+	//! Returns the oriented angle between two 3d vectors based from a reference axis.
+	//! Parameters need to be normalized.
+	/// @see gtx_vector_angle extension.
+	template<typename T, qualifier Q>
+	GLM_FUNC_DECL T orientedAngle(vec<3, T, Q> const& x, vec<3, T, Q> const& y, vec<3, T, Q> const& ref);
+
+	/// @}
+}// namespace glm
+
+#include "vector_angle.inl"