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-rw-r--r--src/include/glm/gtx/polar_coordinates.inl36
1 files changed, 36 insertions, 0 deletions
diff --git a/src/include/glm/gtx/polar_coordinates.inl b/src/include/glm/gtx/polar_coordinates.inl
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+++ b/src/include/glm/gtx/polar_coordinates.inl
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+/// @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