I have a basic question about using NSAnimation. Here is what I am
trying to do: My program shows a custom view and I want to animate an
NSImage within that custom view. When the mouse is clicked within the
program I want to move (animate) the image to a new point in the window.
I have subclassed NSAnimation into MyAnim and I have overloaded the
method "-(void)setCurrentProgress:(NSAnimationProgress)progress". My
program is organized in this fashion.
I have a custom view class MyView which has pointers to my data
objects (an NSImage in this case) and my animation object myAnim. It
also has a pointer to my custom view object MyView.
On a mouse click I send the message
[myAnim startAnimation];
@interface MyView : NSView {
NSImage *myObj;
MyAnim *myAnim;
}
I want the animation to begin when the mouse is clicked so I have
overloaded the "-mouseDown" method to call [myAnim startAnimation];.
I plan to animate my image by changing its position from within -
setCurrentProgress. My problem - how do I access myObj from within
the method -setCurrentProgress (which is inside MyAnim). I could do
something like:
(in file MyAnim.m)
-(void)setCurrentProgress:(NSAnimationProgress)progress {
NSImage * tmpImg = [super valueForKey:@"myObj"];
}
But it looks a little bit like a hack.
My questions:
1. Is there a better way to access myObj from MyAnim?
2. Once I change the position of myObj how do I get the view to
redraw the image?
Hrishi
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