flashisobar's Blog

- (CALayer *)addPlaneToLayer:(CALayer*)container size:(CGSize)size position:(CGPoint)point color:(UIColor*)color
{
    CALayer *plane = [CALayer layer];
    //Define position,size and colors
    plane.backgroundColor = [color CGColor];
    plane.opacity = 0.6;
    plane.frame = CGRectMake(0, 0, 640, 300);
    plane.position = point;
    plane.anchorPoint = CGPointMake(0.5, 0.5);
    plane.borderColor = [[UIColor colorWithWhite:1.0 alpha:0.5]CGColor];
    plane.borderWidth = 3;
    plane.cornerRadius = 10;
    //Add the layer to the container layer
    [container addSublayer:planer];
}

// set transform to the plane
CATransform3D t = CATransform3DIdentity;
t = CATransform3DRotate(t, 45.0f * M_PI / 180.0f, 0, 1, 0); // rotation: Y axis(0,1,0)
plane.transform = t;

// set matrix perspective to the plane
#define degToRad(x) (x * M_PI / 180.0f)
CATransform3D t = CATransform3DIdentity;
//Add perspective
t.m34 = 1.0/ -100;
//t.m34 = 1.0/ -500;
t = CATransform3DRotate(t, degToRad(45.0), 0, 1, 0);
plane.transform = t;

- (void)startAnimation
{
  CALayer *container = [CALayer layer];
  container.frame = CGRectMake(0, 0, 640, 400);
  [self.view.layer addSublayer:container];
  
  CALayer *plane = [self addPlaneToLayer:container size:CGSizeMake(40,80) position:CGPointMake(280, 160) color:[UIColor brownColor]];

  // animation sequence
    double time = 0;
  CABasicAnimation *ani1 = [self createAnimation:@"transform.rotation.x" fromValue:@0 toValue:@(M_PI) beginTime:time duration:1];
  time += 1;
  CABasicAnimation *ani2 = [self createAnimation:@"position" fromValue:[NSValue valueWithCGPoint:plane.position] toValue:[NSValue valueWithCGPoint:CGPointMake(20, 40)] beginTime:time duration:2];
  time += 2;
  CABasicAnimation *ani3 = [self createAnimation:@"position" fromValue:[NSValue valueWithCGPoint:CGPointMake(20, 40)] toValue:[NSValue valueWithCGPoint:plane.position] beginTime:time duration:0.5];
  time += 0.5;

  // added to group
    CAAnimationGroup *group = [CAAnimationGroup animation];
    group.animations = @[ani1, ani2, ani3];
    group.duration = time;
    group.removedOnCompletion = NO;
    group.fillMode = kCAFillModeForwards;
    group.repeatCount = HUGE;

    [plane addAnimation:group forKey:nil];
}

- (CABasicAnimation *)createAnimation:(NSString *)keyPath fromValue:(id)fromValue toValue:(id)toValue beginTime:(double)beginTime duration:(double)duration
{
  CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:keyPath];
  animation.fromValue = fromValue;
  animation.toValue  = toValue;
  animation.beginTime = beginTime;
  animation.duration = duration;
  //animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
  
  return animation;
}