Method ContainsPoint

path.go:949–955

Contains returns whether the point (x,y) is contained/filled by the path. This depends on the FillRule. It uses a ray from (x,y) toward (∞,y) and counts the number of intersections with the path. When the point is on the boundary it is considered to be on the path's exterior.

(x, y float64, fillRule FillRule)

// FillRule. It uses a ray from (x,y) toward (∞,y) and counts the number of intersections with
// the path. When the point is on the boundary it is considered to be on the path's exterior.
func (p *Path) ContainsPoint(x, y float64, fillRule FillRule) bool {
	n, boundary := p.WindingsAt(x, y)
	if boundary {
		return true
	}
	return fillRule.Fills(n)
}

// CCW returns true when the path is counter clockwise oriented at its right-most coordinate
// (bottom-most of all right-most coordinates). It is most useful when knowing that the path does