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author | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2017-05-12 15:49:50 +0200 |
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committer | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2017-05-12 15:49:50 +0200 |
commit | e62817b8252974b8a98393275874ee303840bf13 (patch) | |
tree | 4565935f06e369f4a84410b0c098958e07a750c7 /depedencies/include/glm/gtx/closest_point.inl | |
parent | 2017-05-10 (diff) | |
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Diffstat (limited to 'depedencies/include/glm/gtx/closest_point.inl')
-rw-r--r-- | depedencies/include/glm/gtx/closest_point.inl | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/depedencies/include/glm/gtx/closest_point.inl b/depedencies/include/glm/gtx/closest_point.inl new file mode 100644 index 0000000..5c6a879 --- /dev/null +++ b/depedencies/include/glm/gtx/closest_point.inl @@ -0,0 +1,46 @@ +/// @ref gtx_closest_point +/// @file glm/gtx/closest_point.inl + +namespace glm +{ + template <typename T, precision P> + GLM_FUNC_QUALIFIER tvec3<T, P> closestPointOnLine + ( + tvec3<T, P> const & point, + tvec3<T, P> const & a, + tvec3<T, P> const & b + ) + { + T LineLength = distance(a, b); + tvec3<T, P> Vector = point - a; + tvec3<T, P> LineDirection = (b - a) / LineLength; + + // Project Vector to LineDirection to get the distance of point from a + T Distance = dot(Vector, LineDirection); + + if(Distance <= T(0)) return a; + if(Distance >= LineLength) return b; + return a + LineDirection * Distance; + } + + template <typename T, precision P> + GLM_FUNC_QUALIFIER tvec2<T, P> closestPointOnLine + ( + tvec2<T, P> const & point, + tvec2<T, P> const & a, + tvec2<T, P> const & b + ) + { + T LineLength = distance(a, b); + tvec2<T, P> Vector = point - a; + tvec2<T, P> LineDirection = (b - a) / LineLength; + + // Project Vector to LineDirection to get the distance of point from a + T Distance = dot(Vector, LineDirection); + + if(Distance <= T(0)) return a; + if(Distance >= LineLength) return b; + return a + LineDirection * Distance; + } + +}//namespace glm |