/// @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