I have a confused about the code

[zqs-zjj-1208]

the codes below has been wrote velocity.x > 0 twice ,i don't know why

		// Moving Right
		if (velocity.x > 0)
		{
			if (currentX > 0)
			{
				if ([self shouldDisplayMenu:menu forViewController:self.visibleViewController])
					[self openMenu:(velocity.x > 0) ? MenuLeft : MenuRight withDuration:MENU_QUICK_SLIDE_ANIMATION_DURATION andCompletion:nil];
			}
			else
			{
				[self closeMenuWithDuration:MENU_QUICK_SLIDE_ANIMATION_DURATION andCompletion:nil];
			}
		}