gistfile1.m

    UIBezierPath *path =[UIBezierPath bezierPath];
    CGPoint center = CGPointMake(rect.size.width / 2.0, rect.size.height / 2.0);
    CGFloat radius = sqrt(pow(center.x, 2) + pow(center.y, 2));
    CGFloat angle = M_PI / self.count;
    [self.color set];
    [path moveToPoint:center];
    for (NSUInteger i = 0; i < self.count; i++) {
        [path addArcWithCenter:center radius:radius startAngle:2*i*angle endAngle:(2*i+1)*angle clockwise:YES];
        [path addLineToPoint:center];
        [path closePath];
        [path fill];
    }