From 3fcad7503f72b755efd4d0972389a2cd3808188f Mon Sep 17 00:00:00 2001
From: faiface <faiface@ksp.sk>
Date: Sun, 11 Jun 2017 01:17:37 +0200
Subject: [PATCH] minor doc changes
---
geometry.go | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/geometry.go b/geometry.go
index 02a8b51..d1819a8 100644
--- a/geometry.go
+++ b/geometry.go
@@ -49,11 +49,6 @@ func (u Vec) XY() (x, y float64) {
return u.X, u.Y
}
-// Normal returns a vector normal to u (rotated by math.pi/2)
-func (u Vec) Normal() Vec {
- return Vec{X: u.Y, Y: -u.X}
-}
-
// Add returns the sum of vectors u and v.
func (u Vec) Add(v Vec) Vec {
return Vec{
@@ -70,7 +65,7 @@ func (u Vec) Sub(v Vec) Vec {
}
}
-// To returns the vector from vector u to vector v, equivalent to v.Sub(u).
+// To returns the vector from u to v. Equivalent to v.Sub(u).
func (u Vec) To(v Vec) Vec {
return Vec{
v.X - u.X,
@@ -115,6 +110,11 @@ func (u Vec) Rotated(angle float64) Vec {
}
}
+// Normal returns a vector normal to u. Equivalent to u.Rotated(math.Pi / 2).
+func (u Vec) Normal() Vec {
+ return Vec{X: u.Y, Y: -u.X}
+}
+
// Dot returns the dot product of vectors u and v.
func (u Vec) Dot(v Vec) float64 {
return u.X*v.X + u.Y*v.Y
--
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