iOS开发 画六边形(多边形)

- (void)drawRect:(CGRect)rect {

UIBezierPath * path = [UIBezierPath bezierPath];

[path moveToPoint:CGPointMake(fView_Width(self)/2., 6*DX_Proportion)];

[path addLineToPoint:CGPointMake(fView_Width(self) - 6*DX_Proportion, 30/2.*DX_Proportion + 6*DX_Proportion)];

[path addLineToPoint:CGPointMake(fView_Width(self) - 6*DX_Proportion, 90/2.*DX_Proportion + 6*DX_Proportion)];

[path addLineToPoint:CGPointMake(fView_Width(self)/2., fView_Height(self) - 6*DX_Proportion)];

[path addLineToPoint:CGPointMake(6*DX_Proportion, 90/2.*DX_Proportion + 6*DX_Proportion)];

[path addLineToPoint:CGPointMake(6*DX_Proportion, 30/2.*DX_Proportion + 6*DX_Proportion)];

[path closePath];

path.lineWidth = 3*DX_Proportion;

[self.linColor set];

[path stroke];

CAShapeLayer * shapLayer = [CAShapeLayer layer];

shapLayer.path = path.CGPath;

self.imageView.layer.mask = shapLayer;

}