Rotations, animations, and delays, oh my.

C4WorkSpace.m

//
//  C4WorkSpace.m
//  Examples
//
//  Created by Travis Kirton.
//

#import "C4WorkSpace.h"

@implementation C4WorkSpace {
    NSMutableArray *shapes;
}

-(void)setup {
    shapes = [@[] mutableCopy];

    for(int i = 0; i < 20; i++) {
        C4Shape *s = [C4Shape rect:CGRectMake(0, 0, 20, 20)];
        s.anchorPoint = CGPointMake(0.5f,1.0f+i);
        s.center = self.canvas.center;
        [shapes addObject:s];
    }
    
    [self.canvas addObjects:shapes];
    
    [self runMethod:@"setupAnimations" afterDelay:0.1f];
}

-(void)setupAnimations {
    for(int i = 0; i < [shapes count]; i++) {
        C4Shape *s = shapes[i];
        s.animationDuration = i*.05f + 2.0f;
        [self animateObject:s];
    }
}

-(void)animateObject:(C4Shape *)shape {
    shape.animationDuration *= 0.99f;
    shape.rotation += TWO_PI;
    [self runMethod:@"animateObject:" withObject:shape afterDelay:shape.animationDuration+0.01f];
}

@end