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lib/glm/gtx/range.hpp

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+/// @ref gtx_range
+/// @file glm/gtx/range.hpp
+/// @author Joshua Moerman
+///
+/// @defgroup gtx_range GLM_GTX_range
+/// @ingroup gtx
+///
+/// @brief Defines begin and end for vectors and matrices. Useful for range-based for loop.
+/// The range is defined over the elements, not over columns or rows (e.g. mat4 has 16 elements).
+///
+/// <glm/gtx/range.hpp> need to be included to use these functionalities.
+
+#pragma once
+
+// Dependencies
+#include "../detail/setup.hpp"
+
+#if !GLM_HAS_RANGE_FOR
+#	error "GLM_GTX_range requires C++11 suppport or 'range for'"
+#endif
+
+#include "../gtc/type_ptr.hpp"
+#include "../gtc/vec1.hpp"
+
+namespace glm
+{
+	/// @addtogroup gtx_range
+	/// @{
+
+	template <typename T, precision P>
+	inline length_t components(tvec1<T, P> const & v)
+	{
+		return v.length();
+	}
+	
+	template <typename T, precision P>
+	inline length_t components(tvec2<T, P> const & v)
+	{
+		return v.length();
+	}
+	
+	template <typename T, precision P>
+	inline length_t components(tvec3<T, P> const & v)
+	{
+		return v.length();
+	}
+	
+	template <typename T, precision P>
+	inline length_t components(tvec4<T, P> const & v)
+	{
+		return v.length();
+	}
+	
+	template <typename genType>
+	inline length_t components(genType const & m)
+	{
+		return m.length() * m[0].length();
+	}
+	
+	template <typename genType>
+	inline typename genType::value_type const * begin(genType const & v)
+	{
+		return value_ptr(v);
+	}
+
+	template <typename genType>
+	inline typename genType::value_type const * end(genType const & v)
+	{
+		return begin(v) + components(v);
+	}
+
+	template <typename genType>
+	inline typename genType::value_type * begin(genType& v)
+	{
+		return value_ptr(v);
+	}
+
+	template <typename genType>
+	inline typename genType::value_type * end(genType& v)
+	{
+		return begin(v) + components(v);
+	}
+
+	/// @}
+}//namespace glm