diff -r 3aac7ca07b0e -r db01c37494af project_files/HedgewarsMobile/Classes/UIImageExtra.h
--- a/project_files/HedgewarsMobile/Classes/UIImageExtra.h	Sat Sep 25 03:04:22 2010 +0200
+++ b/project_files/HedgewarsMobile/Classes/UIImageExtra.h	Sat Sep 25 18:38:05 2010 +0200
@@ -30,6 +30,7 @@
 -(id) initWithContentsOfFile:(NSString *)path andCutAt:(CGRect) rect;
 -(UIImage *)cutAt:(CGRect) rect;
 -(UIImage *)convertToGrayScale;
+-(UIImage *)convertToNegative;
 -(UIImage *)maskImageWith:(UIImage *)maskImage;
 -(UIImage *)makeRoundCornersOfSize:(CGSize) sizewh;