Image Scale add Points

C4WorkSpace.m

//
//  C4WorkSpace.m
//  david
//
//  Created by moi on 13-06-12.
//  Copyright (c) 2013 moi. All rights reserved.
//

#import "C4WorkSpace.h"

@implementation C4WorkSpace {
    C4Image *img;
}

-(void)setup {
	//work your magic here
    img = [C4Image imageNamed:@"C4Sky"];
    [self.canvas addImage:img];
    img.center = self.canvas.center;
    img.userInteractionEnabled = NO;
}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    CGPoint p = [[touches anyObject] locationInView:self.canvas];
    C4Shape *s = [C4Shape ellipse:CGRectMake(0, 0, 10, 10)];
    s.center = p;
    [self.canvas addShape:s];
}

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    CGPoint p = [[touches anyObject] locationInView:self.canvas];
    img.width = p.x;
    img.center = self.canvas.center;
}

@end