Be explicit about type of angles: either Radians or Degrees.

Angles are always doubles.
Internally use radians as much as possible.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1605 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/vector2d.hpp

@@ -10,6 +10,7 @@
 // ----------------------------------------------------------------------------- : Includes
 
 #include <util/prec.hpp>
+#include <util/angle.hpp>
 #include <limits>
 
 // ----------------------------------------------------------------------------- : Rounding
@@ -100,7 +101,7 @@ class Vector2D {
 		return *this / length();
 	}
 	/// Angle between this vector and the x axis
-	inline double angle() const {
+	inline Radians angle() const {
 		return atan2(y,x);
 	}