Index: ui/gfx/vector2d_f.cc |
diff --git a/ui/gfx/vector2d_f.cc b/ui/gfx/vector2d_f.cc |
index f628421269ca2c1b668c8c720f72ff7a8dc0c728..3671c62869c6a7fc3e4c39471b1c71294c5dcf70 100644 |
--- a/ui/gfx/vector2d_f.cc |
+++ b/ui/gfx/vector2d_f.cc |
@@ -51,4 +51,14 @@ void Vector2dF::Scale(float x_scale, float y_scale) { |
y_ *= y_scale; |
} |
+double CrossProduct(const Vector2dF& lhs, const Vector2dF& rhs) { |
+ return static_cast<double>(lhs.x()) * rhs.y() - |
+ static_cast<double>(lhs.y()) * rhs.x(); |
+} |
+ |
+double DotProduct(const Vector2dF& lhs, const Vector2dF& rhs) { |
+ return static_cast<double>(lhs.x()) * rhs.x() + |
+ static_cast<double>(lhs.y()) * rhs.y(); |
+} |
+ |
} // namespace gfx |