Unity - Scripting API: HandleUtility.DistanceToPolyLine
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Declaration
public static float DistanceToPolyLine(params Vector3[] points);
Description
Returns the distance in pixels from the mouse pointer to a polyline.
Calculates the screen space distance from the mouse pointer to the multi segment line that goes through the given world space points.
Uses the current camera to determine the distance.
Additional resources: DistanceToLine.