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Update closest_point.inl

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SiliconKiwi 2014-09-16 09:11:34 +12:00
parent ad85092433
commit b5409fb728
1 changed files with 21 additions and 0 deletions
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21
glm/gtx/closest_point.inl
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@ -28,4 +28,25 @@ namespace glm
if(Distance >= LineLength) return b;
return a + LineDirection * Distance;
}
template <typename T, precision P>
GLM_FUNC_QUALIFIER detail::tvec2<T, P> closestPointOnLine
(
detail::tvec2<T, P> const & point,
detail::tvec2<T, P> const & a,
detail::tvec2<T, P> const & b
)
{
T LineLength = distance(a, b);
detail::tvec2<T, P> Vector = point - a;
detail::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