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POhow to do self rotating CALayer
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  1. POhow to do self rotating CALayer
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    copied!<p>When i Clicked on view its create a star shape path.</p> <p>Now i want to spin the star which is added to CALayer.</p> <p>Can any one help me out.... How to spin the CALayer on iphone.</p> <pre><code>-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ UITouch *touch=[touches anyObject]; currentPoint=[touch locationInView:self.view]; CGMutablePathRef starPath; rootLayer = [CALayer layer]; rootLayer.frame = self.view.bounds; [self.view.layer addSublayer:rootLayer]; starPath = CGPathCreateMutable(); CGPathMoveToPoint(starPath, NULL,currentPoint.x,currentPoint.y+15.0f); for(int i = 1; i &lt; 5; ++i) { CGFloat x =15.0*sinf(i * 4.0 * M_PI/5.0); CGFloat y =15.0*cosf(i * 4.0 * M_PI/5.0); CGPathAddLineToPoint(starPath, NULL,currentPoint.x+x,currentPoint.y+y); } CGPathCloseSubpath(starPath); shapeLayer=[CAShapeLayer layer]; shapeLayer.path = starPath; fillColor = [UIColor colorWithHue:0.825 saturation:1 brightness:1 alpha:1.0]; shapeLayer.fillColor = fillColor.CGColor; [rootLayer addSublayer:shapeLayer]; CGPathRelease(starPath); float zDistance=30; CATransform3D aTransform=CATransform3DIdentity; aTransform.m34=1.0/-zDistance; rootLayer.sublayerTransform=aTransform; [self addAnimationToLayer:rootLayer]; } -(void)addAnimationToLayer:(CALayer *)layer { CABasicAnimation *theAnimation; theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.rotation.z"]; theAnimation.fromValue=[NSNumber numberWithDouble:M_PI_2]; //theAnimation.toValue=[NSNumber numberWithFloat:6.0f*M_PI/180.0f]; theAnimation.duration=100; // theAnimation.autoreverses=TRUE; theAnimation.speed=100; theAnimation.repeatCount=10; [layer addAnimation:theAnimation forKey:@"transform"] ; } </code></pre>
 

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