Method ClosestPoint

util.go:488–515

ClosestPoint returns a point in the rectangle closest to the given point.

(p Point)

// ClosestPoint returns a point in the rectangle closest to the given point.
func (r Rect) ClosestPoint(p Point) Point {
	if r.X0 <= p.X && p.X <= r.X1 {
		if r.Y0 <= p.Y && p.Y <= r.Y1 {
			// inside
			return p
		} else if r.Y1 < p.Y {
			return Point{p.X, r.Y1}
		} else {
			return Point{p.X, r.Y0}
		}
	} else if r.X1 < p.X {
		if r.Y0 <= p.Y && p.Y <= r.Y1 {
			return Point{r.X1, p.Y}
		} else if r.Y1 < p.Y {
			return Point{r.X1, r.Y1}
		} else {
			return Point{r.X1, r.Y0}
		}
	} else {
		if r.Y0 <= p.Y && p.Y <= r.Y1 {
			return Point{r.X0, p.Y}
		} else if r.Y1 < p.Y {
			return Point{r.X0, r.Y1}
		} else {
			return Point{r.X0, r.Y0}
		}
	}
}

// DistanceToPoint returns the distance between the rectangle and a point.
func (r Rect) DistanceToPoint(p Point) float64 {