作图flowerView

by 伍雪颖

- (void)drawRect:(CGRect)rect{    CGSize size = self.bounds.size;    CGFloat margin = 10;    CGFloat radius = rintf(MIN(size.height - margin,size.width - margin)/4);    CGFloat xOffset,yOffset;    CGFloat offset = rintf((size.height - size.width)/2);    if (offset > 0) {        xOffset = rint(margin/2);        yOffset = offset;    }else {        xOffset = -offset;        yOffset = rint(margin/2);    }    [[UIColor redColor] setFill];    UIBezierPath *path = [UIBezierPath bezierPath];    [path addArcWithCenter:CGPointMake(radius*2+xOffset, radius+yOffset) radius:radius startAngle:-M_PI endAngle:0 clockwise:YES];    [path addArcWithCenter:CGPointMake(radius*3+xOffset, radius*2+yOffset) radius:radius startAngle:-M_PI_2 endAngle:M_PI_2 clockwise:YES];    [path addArcWithCenter:CGPointMake(radius*2+xOffset, radius*3+yOffset) radius:radius startAngle:0 endAngle:M_PI clockwise:YES];    [path addArcWithCenter:CGPointMake(radius+xOffset, radius*2+yOffset) radius:radius startAngle:M_PI_2 endAngle:-M_PI_2 clockwise:YES];    [path closePath];    [path fill];}