From 4727ed20846bb3d1a9eabb27aaaa9c5524129556 Mon Sep 17 00:00:00 2001
From: peterbell10 <peterbell10@live.co.uk>
Date: Mon, 24 Sep 2018 21:33:39 +0100
Subject: Add a formatting function for Vector3 (#4282)

* Vector3: Add custom fmt compatible formatter.

* cLuaState: Add fmt version of ApiParamError

* Use vector formatting in manual bindings

* Always log vectors with FLOG
---
 src/Vector3.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src/Vector3.h')

diff --git a/src/Vector3.h b/src/Vector3.h
index cb39a6cde..0456b9e2f 100644
--- a/src/Vector3.h
+++ b/src/Vector3.h
@@ -350,6 +350,22 @@ public:
 		z = -z;
 	}
 
+	// tolua_end
+
+	/** Allows formatting a Vector<T> using the same format specifiers as for T
+	e.g. `fmt::format("{0:0.2f}", Vector3f{0.0231f, 1.2146f, 1.0f}) == "{0.02, 1.21, 1.00}"` */
+	template <typename ArgFormatter>
+	friend void format_arg(fmt::BasicFormatter<char, ArgFormatter> & a_Formatter, const char *& a_FormatStr, Vector3 a_Vec)
+	{
+		std::array<T, 3> Data{{a_Vec.x, a_Vec.y, a_Vec.z}};
+
+		a_Formatter.writer() << '{';
+		fmt::format_arg(a_Formatter, a_FormatStr, fmt::join(Data.cbegin(), Data.cend(), ", "));
+		a_Formatter.writer() << '}';
+	}
+
+	// tolua_begin
+
 	/** The max difference between two coords for which the coords are assumed equal. */
 	static const double EPS;
 
-- 
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