Add Mul2D to Point{,F,F32}.

point.go

@@ -80,11 +80,16 @@ func (p Point) Less(q Point) bool {
 	return p.Y < q.Y
 }
 
-// Mul multiplier the X and Y values of point p with t and returns the result.
+// Mul multiplies the X and Y values of point p with t and returns the result.
 func (p Point) Mul(t int) Point {
 	return Pt(p.X*t, p.Y*t)
 }
 
+// Mul2D multiplies the X and Y values of point p with x and y and returns the result.
+func (p Point) Mul2D(x, y int) Point {
+	return Pt(p.X*x, p.Y*y)
+}
+
 // Norm returns the point with both X and Y normalized.
 func (p Point) Norm() Point {
 	return Pt(ints.Norm(p.X), ints.Norm(p.Y))

pointf.go

@@ -132,11 +132,16 @@ func (p PointF) Invert() PointF {
 	return PointF{-p.X, -p.Y}
 }
 
-// Mul multiplier the X and Y values of point p with t and returns the result.
+// Mul multiplies the X and Y values of point p with t and returns the result.
 func (p PointF) Mul(t float64) PointF {
 	return PtF(p.X*t, p.Y*t)
 }
 
+// Mul2D multiplies the X and Y values of point p with x and y and returns the result.
+func (p PointF) Mul2D(x, y float64) PointF {
+	return PtF(p.X*x, p.Y*y)
+}
+
 // Rect returns a rectangle starting from point p to given point q
 func (p PointF) Rect(q PointF) RectangleF {
 	return RectangleF{Min: p, Max: q}

pointf32.go

@@ -132,11 +132,16 @@ func (p PointF32) Invert() PointF32 {
 	return PointF32{-p.X, -p.Y}
 }
 
-// Mul multiplier the X and Y values of point p with t and returns the result.
+// Mul multiplies the X and Y values of point p with t and returns the result.
 func (p PointF32) Mul(t float32) PointF32 {
 	return PtF32(p.X*t, p.Y*t)
 }
 
+// Mul2D multiplies the X and Y values of point p with x and y and returns the result.
+func (p PointF32) Mul2D(x, y float32) PointF32 {
+	return PtF32(p.X*x, p.Y*y)
+}
+
 // Rect returns a rectangle starting from point p to given point q
 func (p PointF32) Rect(q PointF32) RectangleF32 {
 	return RectangleF32{Min: p, Max: q}