UIBezierPath.h

#import 
#import 
#import 

typedef NS_OPTIONS(NSUInteger, UIRectCorner) {
    UIRectCornerTopLeft     = 1 << 0,
    UIRectCornerTopRight    = 1 << 1,
    UIRectCornerBottomLeft  = 1 << 2,
    UIRectCornerBottomRight = 1 << 3,
    UIRectCornerAllCorners  = ~0UL
};

NS_CLASS_AVAILABLE_IOS(3_2) @interface UIBezierPath : NSObject {
@private
    CGPathRef _path;
    CGFloat *_lineDashPattern;
    NSUInteger _lineDashPatternCount;
    CGFloat _lineWidth, _miterLimit, _flatness, _lineDashPhase;
    CGLineCap _lineCapStyle;
    CGLineJoin _lineJoinStyle;
    BOOL _usesEvenOddFillRule;
    CGPathRef _immutablePath;
    BOOL _immutablePathIsValid;
}

+ (UIBezierPath *)bezierPath;
+ (UIBezierPath *)bezierPathWithRect:(CGRect)rect;
+ (UIBezierPath *)bezierPathWithOvalInRect:(CGRect)rect;
+ (UIBezierPath *)bezierPathWithRoundedRect:(CGRect)rect cornerRadius:(CGFloat)cornerRadius;
+ (UIBezierPath *)bezierPathWithRoundedRect:(CGRect)rect byRoundingCorners:(UIRectCorner)corners cornerRadii:(CGSize)cornerRadii;
+ (UIBezierPath *)bezierPathWithArcCenter:(CGPoint)center radius:(CGFloat)radius startAngle:(CGFloat)startAngle endAngle:(CGFloat)endAngle clockwise:(BOOL)clockwise;
+ (UIBezierPath *)bezierPathWithCGPath:(CGPathRef)CGPath;

@property(nonatomic) CGPathRef CGPath;
- (CGPathRef)CGPath NS_RETURNS_INNER_POINTER;


- (void)moveToPoint:(CGPoint)point;     //  起点
- (void)addLineToPoint:(CGPoint)point;  //  中间点
- (void)addCurveToPoint:(CGPoint)endPoint controlPoint1:(CGPoint)controlPoint1 controlPoint2:(CGPoint)controlPoint2;    //  贝塞尔控制曲线
- (void)addQuadCurveToPoint:(CGPoint)endPoint controlPoint:(CGPoint)controlPoint;
- (void)addArcWithCenter:(CGPoint)center radius:(CGFloat)radius startAngle:(CGFloat)startAngle endAngle:(CGFloat)endAngle clockwise:(BOOL)clockwise NS_AVAILABLE_IOS(4_0);
- (void)closePath;  // 封闭曲线

- (void)removeAllPoints;    // 移除所有点


- (void)appendPath:(UIBezierPath *)bezierPath;  // 拼接路径


- (UIBezierPath *)bezierPathByReversingPath NS_AVAILABLE_IOS(6_0);


- (void)applyTransform:(CGAffineTransform)transform;


@property(readonly,getter=isEmpty) BOOL empty;
@property(nonatomic,readonly) CGRect bounds;
@property(nonatomic,readonly) CGPoint currentPoint;
- (BOOL)containsPoint:(CGPoint)point;


@property(nonatomic) CGFloat lineWidth;     // 线宽
@property(nonatomic) CGLineCap lineCapStyle;
@property(nonatomic) CGLineJoin lineJoinStyle;
@property(nonatomic) CGFloat miterLimit;
@property(nonatomic) CGFloat flatness;
@property(nonatomic) BOOL usesEvenOddFillRule;

- (void)setLineDash:(const CGFloat *)pattern count:(NSInteger)count phase:(CGFloat)phase;
- (void)getLineDash:(CGFloat *)pattern count:(NSInteger *)count phase:(CGFloat *)phase;


- (void)fill; // 实心绘制
- (void)stroke; // 空心绘制

- (void)fillWithBlendMode:(CGBlendMode)blendMode alpha:(CGFloat)alpha;
- (void)strokeWithBlendMode:(CGBlendMode)blendMode alpha:(CGFloat)alpha;

- (void)addClip; //

@end