geom/rectanglef.go

package geom

// RectangleF is defined by two points, the minimum and maximum (floating point).
type RectangleF struct {
	Min, Max PointF
}

// RectF is a shorthand function to create a rectangle.
func RectF(x0, y0, x1, y1 float64) RectangleF {
	if x0 > x1 {
		x0, x1 = x1, x0
	}
	if y0 > y1 {
		y0, y1 = y1, y0
	}
	return RectangleF{PtF(x0, y0), PtF(x1, y1)}
}

// Dx returns the width of r.
func (r RectangleF) Dx() float64 {
	return r.Max.X - r.Min.X
}

// Dy returns the height of r.
func (r RectangleF) Dy() float64 {
	return r.Max.Y - r.Min.Y
}

// Size returns the size of the rectangle.
func (r RectangleF) Size() PointF {
	return PointF{r.Max.X - r.Min.X, r.Max.Y - r.Min.Y}
}