add Vec.YX

2017-03-18 11:34:31 +01:00 · 2017-03-18 11:34:31 +01:00 · 31d4f08173
parent 3ed1d0ab78
commit 31d4f08173
1 changed files with 5 additions and 0 deletions
--- a/geometry.go
+++ b/geometry.go
@ -73,6 +73,11 @@ func (u Vec) XY() (x, y float64) {
 	return real(u), imag(u)
 }

+// YX returns the components of the vector in two return values in reversed order.
+func (u Vec) YX() (y, x float64) {
+	return imag(u), real(u)
+}
+
 // Len returns the length of the vector u.
 func (u Vec) Len() float64 {
 	return cmplx.Abs(complex128(u))