C4Workspace.m

//
// C4WorkSpace.m
// Examples
//
// Created by Travis Kirton and Greg Debicki.
// Updated by Adam Tindale.

#import "C4WorkSpace.h"

@implementation C4WorkSpace
{
    NSMutableArray *shapes;
    int counter;
}

-(void)setup
{
    shapes = [NSMutableArray array];
    
    for(int i = 0; i < 40; i++)
    {
        C4Shape *s = [C4Shape rect:CGRectMake(0, 0, 600, 20)];
        s.fillColor = [UIColor colorWithWhite:0.0f alpha:i/40.0f];
        s.strokeColor = [UIColor clearColor];
        s.anchorPoint = CGPointMake(0.5f,8.0f+i);
        CGPoint p = self.canvas.center;
        p.y += self.canvas.height/2;
        s.center = p;
        [shapes addObject:s];
    }
    [self.canvas addObjects:shapes];
    [self runMethod:@"setupAnimations" afterDelay:0.1f];
}

-(void)setupAnimations
{
    counter = 0;
    for(C4Shape * s in shapes)
    {
        s.animationDuration = counter++*.01f + 2.0f;
        [self animateObject:s];
    }
}

-(void)animateObject:(C4Shape *)shape
{
    shape.animationDuration = (shape.animationDuration > 0.2) ?
        shape.animationDuration *= 0.99f : 2.0f + 0.1f*(counter++%40);
    
    shape.rotation += TWO_PI;
    [self runMethod:@"animateObject:" withObject:shape afterDelay:shape.animationDuration+ 0.2f];
}

@end