A Spiral made of small points

C4WorkSpace.m

//
//  C4WorkSpace.m
//  Complex Shapes Tutorial
//
//  Created by Travis Kirton.
//

#import "C4WorkSpace.h"

@implementation C4WorkSpace

-(void)setup {
    for(int i = 0; i < 64; i++) {
        //generate the radius and angle
        CGFloat radius = 4 * i;
        CGFloat angle = TWO_PI / 16 * i;

        //calculate a point based on the radius and angle, using polar equation: {r * sin(theta), r * cos(theta)}
        CGPoint currentPosition = CGPointMake(radius*[C4Math sin:angle], radius*[C4Math cos:angle]);
        currentPosition.x += self.canvas.center.x;
        currentPosition.y += self.canvas.center.y;
        
        //create a point, center it and add it to the canvas
        C4Shape *point = [C4Shape ellipse:CGRectMake(0, 0, 8, 8)];
        point.center = currentPosition;
        [self.canvas addShape:point];
    }
}

@end