Vector2d:fix rotate bug

2022-07-02 16:41:58 +08:00
parent e2250d6966
commit 90469005aa
1 changed files with 2 additions and 1 deletions
--- a/src/Base/Tools2D.h
+++ b/src/Base/Tools2D.h
@@ -339,8 +339,9 @@ inline Vector2d& Vector2d::Scale(double factor)

 inline Vector2d& Vector2d::Rotate(double angle)
 {
+  decltype(x) tmp_x = x;
  x = x*cos(angle) - y*sin(angle);
-  y = x*sin(angle) + y*cos(angle);
+  y = tmp_x * sin(angle) + y * cos(angle);
  return *this;
 }