+ | Camera system

includes/glm/gtx/polar_coordinates.inl

@@ -0,0 +1,36 @@
+/// @ref gtx_polar_coordinates
+
+namespace glm
+{
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER vec<3, T, Q> polar
+	(
+		vec<3, T, Q> const& euclidean
+	)
+	{
+		T const Length(length(euclidean));
+		vec<3, T, Q> const tmp(euclidean / Length);
+		T const xz_dist(sqrt(tmp.x * tmp.x + tmp.z * tmp.z));
+
+		return vec<3, T, Q>(
+			asin(tmp.y),	// latitude
+			atan(tmp.x, tmp.z),		// longitude
+			xz_dist);				// xz distance
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER vec<3, T, Q> euclidean
+	(
+		vec<2, T, Q> const& polar
+	)
+	{
+		T const latitude(polar.x);
+		T const longitude(polar.y);
+
+		return vec<3, T, Q>(
+			cos(latitude) * sin(longitude),
+			sin(latitude),
+			cos(latitude) * cos(longitude));
+	}
+
+}//namespace glm