UIBezierPath 一起绘制矩形和圆弧
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【中文标题】UIBezierPath 一起绘制矩形和圆弧【英文标题】：UIBezierPath draw rectangle and arcs together 【发布时间】：2015-08-29 01:06:49 【问题描述】：我想画一条这样的路径：
这就是我写的：
CGFloat radius = 50;
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(radius, CGRectGetMinY(rect))];
[path addLineToPoint:CGPointMake(CGRectGetMaxX(rect) - radius, CGRectGetMinY(rect))];
[path addLineToPoint:CGPointMake(CGRectGetMaxX(rect) -radius, CGRectGetMaxY(rect))];
[path addLineToPoint:CGPointMake(radius, CGRectGetMaxY(rect))];
[path closePath];
UIBezierPath *path1 = [UIBezierPath bezierPathWithArcCenter:CGPointMake(radius, CGRectGetMinY(rect) + radius) radius:radius startAngle:0.5 * M_PI endAngle:1.5 *M_PI clockwise:YES];
UIBezierPath *path2 = [UIBezierPath bezierPathWithArcCenter:CGPointMake(CGRectGetMaxX(rect) - radius, CGRectGetMaxY(rect) - radius) radius:radius startAngle:-0.5 * M_PI endAngle:0.5 *M_PI clockwise:YES];
[path1 appendPath:path];
[path1 appendPath:path2];
所以我得到了这样的结果
我怎样才能去掉两条多余的线？谢谢
【问题讨论】：
为什么不使用UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:rect cornerRadius:radius];？
【参考方案1】：
试试这个：
- (void)drawRect:(CGRect)rect
CGContextRef context = UIGraphicsGetCurrentContext();
const CGFloat radius = 50;
const CGFloat lineWidth = 10;
UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:CGRectInset(rect, lineWidth / 2, lineWidth / 2)
cornerRadius:radius];
CGContextSetStrokeColorWithColor(context, [UIColor whiteColor].CGColor);
path.lineWidth = lineWidth;
[path stroke];
CGContextSetFillColorWithColor(context, [UIColor grayColor].CGColor);
[path fill];
您可以像这样实现自定义视图：
@interface RoundedView: UIView
@property (nonatomic, strong) UIColor *strokeColor;
@property (nonatomic, strong) UIColor *fillColor;
@end
@implementation RoundedView
- (instancetype)initWithFrame:(CGRect)frame
self = [super initWithFrame:frame];
if (self)
self.backgroundColor = [UIColor clearColor];
return self;
-(void)drawRect:(CGRect)rect
CGContextRef context = UIGraphicsGetCurrentContext();
const CGFloat radius = 50;
const CGFloat lineWidth = 10;
UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:CGRectInset(rect, lineWidth / 2, lineWidth / 2)
cornerRadius:radius];
CGContextSetStrokeColorWithColor(context, self.strokeColor.CGColor);
path.lineWidth = lineWidth;
[path stroke];
CGContextSetFillColorWithColor(context, self.fillColor.CGColor);
[path fill];
@end
然后使用它：
RoundedView *view = [[RoundedView alloc] initWithFrame:CGRectMake(10, 20, 200, 100)];
[self.view addSubview:view];
【讨论】：
是的，你是对的。我通过 CGPath 解决了它，但你的答案更简单 很高兴能帮到你:)【参考方案2】：这是你需要的，只需要调整它：
- (void)drawSkateboard: (CGRect)frame
UIColor* fillColor = [UIColor colorWithRed: 0 green: 0 blue: 0 alpha: 1];
UIBezierPath* bezierPath = UIBezierPath.bezierPath;
[bezierPath moveToPoint: CGPointMake(CGRectGetMinX(frame) + 529, CGRectGetMinY(frame) + 414)];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 207, CGRectGetMinY(frame) + 414)];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame), CGRectGetMinY(frame) + 207) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 93.2, CGRectGetMinY(frame) + 414) controlPoint2: CGPointMake(CGRectGetMinX(frame), CGRectGetMinY(frame) + 320.9)];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame), CGRectGetMinY(frame) + 207)];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 207, CGRectGetMinY(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame), CGRectGetMinY(frame) + 93.2) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 93.1, CGRectGetMinY(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 529, CGRectGetMinY(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 736, CGRectGetMinY(frame) + 207) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 642.8, CGRectGetMinY(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 736, CGRectGetMinY(frame) + 93.1)];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 736, CGRectGetMinY(frame) + 207)];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 529, CGRectGetMinY(frame) + 414) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 736, CGRectGetMinY(frame) + 320.9) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 642.9, CGRectGetMinY(frame) + 414)];
[bezierPath closePath];
bezierPath.miterLimit = 4;
[fillColor setFill];
[bezierPath fill];
这是针对 Iphone 6+ 尺寸的风景，它会产生这个：
我将其调整为全屏，以便您通过使用整个屏幕边界的百分比和分割来调整其大小，但这只是一个示例，仅此而已。我会再发一些。
这是另一个，这个与你所拥有的非常匹配，这也是为 iphone 6+ 设计的，全屏宽度，你只需按照 (期望高度)*(([UIScreen mainScreen].bounds.height)/(736)) 然后对宽度数字执行相同操作，但显然宽度会从 iphone 6+ 向下和向上调整大小
- (void)drawSkateboard: (CGRect)frame
UIColor* color = [UIColor colorWithRed: 0.451 green: 0.416 blue: 1 alpha: 1];
UIBezierPath* bezierPath = UIBezierPath.bezierPath;
[bezierPath moveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.87704 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.71739 * CGRectGetHeight(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 0.12296 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.71739 * CGRectGetHeight(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.00000 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.49879 * CGRectGetHeight(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 0.05530 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.71739 * CGRectGetHeight(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 0.00000 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.61908 * CGRectGetHeight(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 0.00000 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.49879 * CGRectGetHeight(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.12296 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.28019 * CGRectGetHeight(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 0.00000 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.37850 * CGRectGetHeight(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 0.05530 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.28019 * CGRectGetHeight(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 0.87704 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.28019 * CGRectGetHeight(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 1.00000 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.49879 * CGRectGetHeight(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 0.94470 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.28019 * CGRectGetHeight(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 1.00000 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.37850 * CGRectGetHeight(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 1.00000 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.49879 * CGRectGetHeight(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.87704 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.71739 * CGRectGetHeight(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 1.00000 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.61908 * CGRectGetHeight(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 0.94470 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.71739 * CGRectGetHeight(frame))];
[bezierPath closePath];
bezierPath.miterLimit = 4;
[color setFill];
[bezierPath fill];
结果：
灰色背景，iphone 6+ 屏幕，白色边框，与您发布的尺寸相同：
- (void)drawSkateboard: (CGRect)frame
UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRect: CGRectMake(CGRectGetMinX(frame), CGRectGetMinY(frame), 736, 414)];
[UIColor.lightGrayColor setFill];
[rectanglePath fill];
UIBezierPath* bezierPath = UIBezierPath.bezierPath;
[bezierPath moveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.82853 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.69300 * CGRectGetHeight(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 0.17147 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.69300 * CGRectGetHeight(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.06291 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.50000 * CGRectGetHeight(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 0.11182 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.69300 * CGRectGetHeight(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 0.06291 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.60628 * CGRectGetHeight(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 0.06291 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.50000 * CGRectGetHeight(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.17147 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.30700 * CGRectGetHeight(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 0.06291 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.39396 * CGRectGetHeight(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 0.11168 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.30700 * CGRectGetHeight(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 0.82853 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.30700 * CGRectGetHeight(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.93709 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.50000 * CGRectGetHeight(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 0.88818 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.30700 * CGRectGetHeight(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 0.93709 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.39372 * CGRectGetHeight(frame))];
[bezierPath addLineToPoint: CGPointMake(CGRectGetMinX(frame) + 0.93709 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.50000 * CGRectGetHeight(frame))];
[bezierPath addCurveToPoint: CGPointMake(CGRectGetMinX(frame) + 0.82853 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.69300 * CGRectGetHeight(frame)) controlPoint1: CGPointMake(CGRectGetMinX(frame) + 0.93709 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.60604 * CGRectGetHeight(frame)) controlPoint2: CGPointMake(CGRectGetMinX(frame) + 0.88818 * CGRectGetWidth(frame), CGRectGetMinY(frame) + 0.69300 * CGRectGetHeight(frame))];
[bezierPath closePath];
bezierPath.miterLimit = 4;
[UIColor.blueColor setFill];
[bezierPath fill];
[UIColor.whiteColor setStroke];
bezierPath.lineWidth = 5.5;
[bezierPath stroke];
结果：
而且，最重要的是，这是一个类别，这非常好，你插入你的数字，然后你就完成了：
#define TOP_LEFT(X, Y)\
CGPointMake(rect.origin.x + X * limitedRadius,\
rect.origin.y + Y * limitedRadius)
#define TOP_RIGHT(X, Y)\
CGPointMake(rect.origin.x + rect.size.width - X * limitedRadius,\
rect.origin.y + Y * limitedRadius)
#define BOTTOM_RIGHT(X, Y)\
CGPointMake(rect.origin.x + rect.size.width - X * limitedRadius,\
rect.origin.y + rect.size.height - Y * limitedRadius)
#define BOTTOM_LEFT(X, Y)\
CGPointMake(rect.origin.x + X * limitedRadius,\
rect.origin.y + rect.size.height - Y * limitedRadius)
+ (UIBezierPath*)bezierPathWithios7RoundedRect: (CGRect)rect cornerRadius: (CGFloat)radius
UIBezierPath* path = UIBezierPath.bezierPath;
CGFloat limit = MIN(rect.size.width, rect.size.height) / 2 / 1.52866483;
CGFloat limitedRadius = MIN(radius, limit);
[path moveToPoint: TOP_LEFT(1.52866483, 0.00000000)];
[path addLineToPoint: TOP_RIGHT(1.52866471, 0.00000000)];
[path addCurveToPoint: TOP_RIGHT(0.66993427, 0.06549600)
controlPoint1: TOP_RIGHT(1.08849323, 0.00000000)
controlPoint2: TOP_RIGHT(0.86840689, 0.00000000)];
[path addLineToPoint: TOP_RIGHT(0.63149399, 0.07491100)];
[path addCurveToPoint: TOP_RIGHT(0.07491176, 0.63149399)
controlPoint1: TOP_RIGHT(0.37282392, 0.16905899)
controlPoint2: TOP_RIGHT(0.16906013, 0.37282401)];
[path addCurveToPoint: TOP_RIGHT(0.00000000, 1.52866483)
controlPoint1: TOP_RIGHT(0.00000000, 0.86840701)
controlPoint2: TOP_RIGHT(0.00000000, 1.08849299)];
[path addLineToPoint: BOTTOM_RIGHT(0.00000000, 1.52866471)];
[path addCurveToPoint: BOTTOM_RIGHT(0.06549569, 0.66993493)
controlPoint1: BOTTOM_RIGHT(0.00000000, 1.08849323)
controlPoint2: BOTTOM_RIGHT(0.00000000, 0.86840689)];
[path addLineToPoint: BOTTOM_RIGHT(0.07491111, 0.63149399)];
[path addCurveToPoint: BOTTOM_RIGHT(0.63149399, 0.07491111)
controlPoint1: BOTTOM_RIGHT(0.16905883, 0.37282392)
controlPoint2: BOTTOM_RIGHT(0.37282392, 0.16905883)];
[path addCurveToPoint: BOTTOM_RIGHT(1.52866471, 0.00000000)
controlPoint1: BOTTOM_RIGHT(0.86840689, 0.00000000)
controlPoint2: BOTTOM_RIGHT(1.08849323, 0.00000000)];
[path addLineToPoint: BOTTOM_LEFT(1.52866483, 0.00000000)];
[path addCurveToPoint: BOTTOM_LEFT(0.66993397, 0.06549569)
controlPoint1: BOTTOM_LEFT(1.08849299, 0.00000000)
controlPoint2: BOTTOM_LEFT(0.86840701, 0.00000000)];
[path addLineToPoint: BOTTOM_LEFT(0.63149399, 0.07491111)];
[path addCurveToPoint: BOTTOM_LEFT(0.07491100, 0.63149399)
controlPoint1: BOTTOM_LEFT(0.37282401, 0.16905883)
controlPoint2: BOTTOM_LEFT(0.16906001, 0.37282392)];
[path addCurveToPoint: BOTTOM_LEFT(0.00000000, 1.52866471)
controlPoint1: BOTTOM_LEFT(0.00000000, 0.86840689)
controlPoint2: BOTTOM_LEFT(0.00000000, 1.08849323)];
[path addLineToPoint: TOP_LEFT(0.00000000, 1.52866483)];
[path addCurveToPoint: TOP_LEFT(0.06549600, 0.66993397)
controlPoint1: TOP_LEFT(0.00000000, 1.08849299)
controlPoint2: TOP_LEFT(0.00000000, 0.86840701)];
[path addLineToPoint: TOP_LEFT(0.07491100, 0.63149399)];
[path addCurveToPoint: TOP_LEFT(0.63149399, 0.07491100)
controlPoint1: TOP_LEFT(0.16906001, 0.37282401)
controlPoint2: TOP_LEFT(0.37282401, 0.16906001)];
[path addCurveToPoint: TOP_LEFT(1.52866483, 0.00000000)
controlPoint1: TOP_LEFT(0.86840701, 0.00000000)
controlPoint2: TOP_LEFT(1.08849299, 0.00000000)];
[path closePath];
return path;
最后一个基本上可以工作和弯曲，但你希望它弯曲
要点：
https://gist.github.com/anonymous/1e86aedc1a7c204cd7fb
https://gist.github.com/anonymous/0b7a7f08bbd1f2622d9a
【讨论】：
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