Add glm 0.9.2

ExternalLibs/glm/gtx/vector_query.inl

@@ -0,0 +1,174 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2007-03-05
+// Updated : 2010-02-16
+// Licence : This source is under MIT License
+// File    : glm/gtx/vector_query.inl
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Dependency:
+// - GLM core
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include <cassert>
+
+namespace glm{
+namespace gtx{
+namespace vector_query
+{
+	template <typename T>
+	GLM_FUNC_QUALIFIER bool areCollinear
+	(
+		detail::tvec2<T> const & v0, 
+		detail::tvec2<T> const & v1, 
+		T const & epsilon
+	)
+	{
+		return length(cross(detail::tvec3<T>(v0, T(0)), detail::tvec3<T>(v1, T(0)))) < epsilon;
+	}
+
+	template <typename T>
+	GLM_FUNC_QUALIFIER bool areCollinear
+	(
+		detail::tvec3<T> const & v0, 
+		detail::tvec3<T> const & v1, 
+		T const & epsilon
+	)
+	{
+		return length(cross(v0, v1)) < epsilon;
+	}
+
+	template <typename T>
+	GLM_FUNC_QUALIFIER bool areCollinear
+	(
+		detail::tvec4<T> const & v0, 
+		detail::tvec4<T> const & v1, 
+		T const & epsilon
+	)
+	{
+		return length(cross(detail::tvec3<T>(v0), detail::tvec3<T>(v1))) < epsilon;
+	}
+
+	template <typename genType>
+	GLM_FUNC_QUALIFIER bool areOpposite
+	(
+		genType const & v0, 
+		genType const & v1, 
+		typename genType::value_type const & epsilon
+	)
+	{
+		assert(isNormalized(v0) && isNormalized(v1));
+        return((typename genType::value_type(1) + dot(v0, v1)) <= epsilon);
+	}
+
+	template <typename genType>
+	GLM_FUNC_QUALIFIER bool areOrthogonal
+	(
+		genType const & v0, 
+		genType const & v1, 
+		typename genType::value_type const & epsilon
+	)
+	{
+		return abs(dot(v0, v1)) <= max(
+			typename genType::value_type(1), 
+			length(v0)) * max(
+				typename genType::value_type(1), 
+				length(v1)) * epsilon;
+	}
+
+	template <typename genType> 
+	GLM_FUNC_QUALIFIER bool isNormalized
+	(
+		genType const & v, 
+		typename genType::value_type const & epsilon
+	)
+	{
+		return abs(length(v) - typename genType::value_type(1)) <= typename genType::value_type(2) * epsilon;
+	}
+
+	template <typename genType> 
+	GLM_FUNC_QUALIFIER bool isNull
+	(
+		genType const & v, 
+		typename genType::value_type const & epsilon
+	)
+	{
+		return length(v) <= epsilon;
+	}
+
+    template <typename T> 
+    GLM_FUNC_QUALIFIER bool isCompNull
+	(
+		T const & s, 
+		T const & epsilon
+	)
+    {
+        return abs(s) < epsilon;
+    }
+
+    template <typename T> 
+    GLM_FUNC_QUALIFIER detail::tvec2<bool> isCompNull
+	(
+		detail::tvec2<T> const & v, 
+		T const & epsilon)
+    {
+        return detail::tvec2<bool>(
+            (abs(v.x) < epsilon),
+            (abs(v.y) < epsilon));
+    }
+
+    template <typename T> 
+    GLM_FUNC_QUALIFIER detail::tvec3<bool> isCompNull
+	(
+		detail::tvec3<T> const & v, 
+		T const & epsilon
+	)
+    {
+        return detail::tvec3<bool>(
+            abs(v.x) < epsilon,
+            abs(v.y) < epsilon,
+            abs(v.z) < epsilon);
+    }
+
+    template <typename T> 
+    GLM_FUNC_QUALIFIER detail::tvec4<bool> isCompNull
+	(
+		detail::tvec4<T> const & v, 
+		T const & epsilon
+	)
+    {
+        return detail::tvec4<bool>(
+            abs(v.x) < epsilon,
+            abs(v.y) < epsilon,
+            abs(v.z) < epsilon,
+            abs(v.w) < epsilon);
+    }
+
+	template <typename genType>
+	GLM_FUNC_QUALIFIER bool areOrthonormal
+	(
+		genType const & v0, 
+		genType const & v1, 
+		typename genType::value_type const & epsilon
+	)
+	{
+		return isNormalized(v0, epsilon) && isNormalized(v1, epsilon) && (abs(dot(v0, v1)) <= epsilon);
+	}
+
+	template <typename genType>
+	GLM_FUNC_QUALIFIER bool areSimilar
+	(
+		genType const & v0, 
+		genType const & v1, 
+		typename genType::value_type const & epsilon
+	)
+	{
+		bool similar = true;
+        for(typename genType::size_type i = 0; similar && i < genType::value_size(); i++)
+			similar = (abs(v0[i] - v1[i]) <= epsilon);
+		return similar;
+	}
+
+}//namespace vector_query
+}//namespace gtx
+}//namespace glm