X-Git-Url: http://gitweb.pgornicz.com/gitweb.cgi?a=blobdiff_plain;f=src%2FVector2.h;h=13ffd883503bec2b7740cb715642e5801166ddbe;hb=a5aefcc603bef438a25cabaacbcc9797c2e32722;hp=2d1e85b9cab31688c6d41018e1c4ac292d6832e2;hpb=617dcc71d9a71663f63fb56ffac2505b45bf91b9;p=physics.git

diff --git a/src/Vector2.h b/src/Vector2.h
index 2d1e85b..13ffd88 100644
--- a/src/Vector2.h
+++ b/src/Vector2.h
@@ -1,3 +1,20 @@
+/*
+ *  Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) com.
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef VECTOR2_H
 #define VECTOR2_H
 
@@ -22,6 +39,9 @@ class Vector2
 
     float angle() const;
     float length() const;
+    float sqrLength() const;
+
+    float dot(const Vector2&) const;
 
     Vector2 add(const Vector2&) const;
     Vector2 subtract(const Vector2&) const;