一：Animation Timing Curves

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1：Linear Animation Timing

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2：Ease-In Animation Timing

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3:Ease-Out Animation Timing

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4:Ease-In Ease-Out Animation Timing

5:Custom Animation Timing

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?自定義動(dòng)畫(huà)執(zhí)行曲線(xiàn)設(shè)置

We create a custom timing with the initWithControlPoints :::: method on CAMediaTimingFunction like this:

    - (CAMediaTimingFunction *)getTimingFunction {
        CGFloat c1x = 0.5;
        CGFloat c1y = 1.0;
        CGFloat c2x = 0.5;
        CGFloat c2y = 0.0;
      return [[CAMediaTimingFunction alloc    initWithControlPoints:cx1 :cy1 :cx2 :cy2];
}
  

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    -(void)setupMover {
        NSRect bounds = self.bounds;
         NSRect moverFrame =NSInsetRect(bounds, NSWidth(bounds) / 4.0f,NSHeight(bounds) / 4.0f);
        moverFrame.origin.x = 0.0f;
mover = [[NSImageView alloc] initWithFrame:moverFrame];
[mover setImageScaling:NSScaleToFit];
[mover setImage:[NSImage imageNamed:@"photo.jpg" ]];
[self addSubview:mover];
}
- (id)initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
[self setupMover];
}
return self;
}

- (BOOL)acceptsFirstResponder {
return YES;
}
- (void)keyDown:(NSEvent *)event {
[self move];
}

- (CABasicAnimation *)moveAnimation {
if(nil == moveAnimation) {
moveAnimation = [CABasicAnimation animation];
moveAnimation.duration = 2.0f;
moveAnimation.timingFunction =
[[CAMediaTimingFunction alloc]
initWithControlPoints:0.5 :1.0 :0.5 :0.0];
}
return moveAnimation;
}
- (void)move {
NSDictionary *animations = [NSDictionary
dictionaryWithObject:[self moveAnimation]
forKey:@"frameOrigin" ];
[mover setAnimations:animations];
NSPoint origin = mover.frame.origin;
origin.x += NSWidth(mover.frame);
[mover.animator setFrameOrigin:origin];
}
  

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Animation Timing