From bf30816e363b196805c99ef06c41ec1560005040 Mon Sep 17 00:00:00 2001
From: Christophe Riccio <christopheri@unity3d.com>
Date: Mon, 31 Aug 2015 22:34:14 +0200
Subject: [PATCH] - Added to_string for quat and dual_quat in GTX_string_cast
 #375

---
 glm/gtx/string_cast.hpp |  2 ++
 glm/gtx/string_cast.inl | 32 ++++++++++++++++++++++++++++++++
 readme.md               |  1 +
 3 files changed, 35 insertions(+)

diff --git a/glm/gtx/string_cast.hpp b/glm/gtx/string_cast.hpp
index e04320c0..c292efd1 100644
--- a/glm/gtx/string_cast.hpp
+++ b/glm/gtx/string_cast.hpp
@@ -48,6 +48,8 @@
 // Dependency:
 #include "../glm.hpp"
 #include "../gtc/type_precision.hpp"
+#include "../gtc/quaternion.hpp"
+#include "../gtx/dual_quaternion.hpp"
 #include <string>
 
 #if(GLM_COMPILER & GLM_COMPILER_CUDA)
diff --git a/glm/gtx/string_cast.inl b/glm/gtx/string_cast.inl
index fb70ebc0..c21fa75f 100644
--- a/glm/gtx/string_cast.inl
+++ b/glm/gtx/string_cast.inl
@@ -444,6 +444,38 @@ namespace detail
 				x[3][0], x[3][1], x[3][2], x[3][3]);
 		}
 	};
+
+
+	template <typename T, precision P>
+	struct compute_to_string<tquat, T, P>
+	{
+		GLM_FUNC_QUALIFIER static std::string call(tquat<T, P> const & x)
+		{
+			char const * PrefixStr = prefix<T>::value();
+			char const * LiteralStr = literal<T, std::numeric_limits<T>::is_iec559>::value();
+			std::string FormatStr(detail::format("%squat(%s, %s, %s, %s)",
+				PrefixStr,
+				LiteralStr, LiteralStr, LiteralStr, LiteralStr));
+
+			return detail::format(FormatStr.c_str(), x[0], x[1], x[2], x[3]);
+		}
+	};
+
+	template <typename T, precision P>
+	struct compute_to_string<tdualquat, T, P>
+	{
+		GLM_FUNC_QUALIFIER static std::string call(tdualquat<T, P> const & x)
+		{
+			char const * PrefixStr = prefix<T>::value();
+			char const * LiteralStr = literal<T, std::numeric_limits<T>::is_iec559>::value();
+			std::string FormatStr(detail::format("%sdualquat((%s, %s, %s, %s), (%s, %s, %s, %s))",
+				PrefixStr,
+				LiteralStr, LiteralStr, LiteralStr, LiteralStr));
+
+			return detail::format(FormatStr.c_str(), x.real[0], x.real[1], x.real[2], x.real[3], x.dual[0], x.dual[1], x.dual[2], x.dual[3]);
+		}
+	};
+
 }//namespace detail
 
 template <template <typename, precision> class matType, typename T, precision P>
diff --git a/readme.md b/readme.md
index c1795df9..d3c35d6b 100644
--- a/readme.md
+++ b/readme.md
@@ -53,6 +53,7 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
 #### [GLM 0.9.7.1](https://github.com/g-truc/glm/releases/latest) - 2015-XX-XX
 ##### Improvements:
 - Improved constexpr for constant functions coverage #198
+- Added to_string for quat and dual_quat in GTX_string_cast #375
 
 ##### Fixes:
 - Fixed strict alignment warnings #235 #370