Function findClosestPoint

findClosestPoint<T>(pos, constrainRect, locations): ClosestPointCandidate<T>
Find the closest point out of locations to the given point on the given constraining rectangle.
Type Parameters
- T extends PointXY
Parameters
- pos: PointXY
  An x,y location in pixel values
- constrainRect: Size
  Width/height of the bounding box, in pixels
- locations: T[]
  A list of x/y logical locations, whose values are proportional lengths (anchor format).
Returns ClosestPointCandidate<T>