// 用于创建一个基础路径+ (instancetype)bezierPath;// 用于画矩阵+ (instancetype)bezierPathWithRect:(CGRect)rect;// 用于在矩形里面画出一个圆形+ (instancetype)bezierPathWithOvalInRect:(CGRect)rect;// 用于在矩形里面画出一个椭圆+ (instancetype)bezierPathWithRoundedRect:(CGRect)rect cornerRadius:(CGFloat)cornerRadius;// 可以指定画圆角，可以一个View添加圆角+ (instancetype)bezierPathWithRoundedRect:(CGRect)rect byRoundingCorners:(UIRectCorner)corners cornerRadii:(CGSize)cornerRadii;// 根据一个点画出一条弧线/圆+ (instancetype)bezierPathWithArcCenter:(CGPoint)center radius:(CGFloat)radius startAngle:(CGFloat)startAngle endAngle:(CGFloat)endAngle clockwise:(BOOL)clockwise;// 根据一个Core Graphics路径创建一个新的路径+ (instancetype)bezierPathWithCGPath:(CGPathRef)CGPath;// 将画笔移动到某一个点- (void)moveToPoint:(CGPoint)point;// 从一个点添加一条线到point点- (void)addLineToPoint:(CGPoint)point;// 从一个点添加曲线到另一个点endPoint，曲线的弯度控制点有两个controlPoint1和controlPoint2。- (void)addCurveToPoint:(CGPoint)endPoint controlPoint1:(CGPoint)controlPoint1 controlPoint2:(CGPoint)controlPoint2;// 从一个点添加曲线到另一个点endPoint，曲线的弯度控制点controlPoint- (void)addQuadCurveToPoint:(CGPoint)endPoint controlPoint:(CGPoint)controlPoint;// 根据一个点画出一条弧线/圆- (void)addArcWithCenter:(CGPoint)center radius:(CGFloat)radius startAngle:(CGFloat)startAngle endAngle:(CGFloat)endAngle clockwise:(BOOL)clockwise NS_AVAILABLE_IOS(4_0);// 合拢当前路径的起始点和终止点- (void)closePath;// 移除path路径瞄下的所有路径，当然必须要在[path fill];或者是[path stroke];语句之前才有效果- (void)removeAllPoints;// 路径之间的拼接，拼接之后只需要调用拼接路径的路径执行fill/stroke即可，但是fill和closePath是独立的不会互相影响- (void)appendPath:(UIBezierPath *)bezierPath;// 反向绘制path- (UIBezierPath *)bezierPathByReversingPath ;- (void)applyTransform:(CGAffineTransform)transform;@property(readonly,getter=isEmpty) BOOL empty;// 判断路径是否为空@property(nonatomic,readonly) CGRect bounds;// 获取当前路劲的画板CGRect@property(nonatomic,readonly) CGPoint currentPoint;// 获取当前路径下的画笔的点- (BOOL)containsPoint:(CGPoint)point;// 判断路劲里面是否包含某个点，需要是重要点才为true，fill形成的点不算@property(nonatomic) CGFloat lineWidth;// 线的宽度@property(nonatomic) CGLineCap lineCapStyle;// 线的类型@property(nonatomic) CGLineJoin lineJoinStyle;// 线尾部头部的类型@property(nonatomic) CGFloat miterLimit; // Used when lineJoinStyle is kCGLineJoinMiter@property(nonatomic) CGFloat flatness;@property(nonatomic) BOOL usesEvenOddFillRule; // Default is NO. When YES, the even-odd fill rule is used for drawing, clipping, and hit testing.- (void)setLineDash:(nullable const CGFloat *)pattern count:(NSInteger)count phase:(CGFloat)phase;- (void)getLineDash:(nullable CGFloat *)pattern count:(nullable NSInteger *)count phase:(nullable CGFloat *)phase;- (void)fill;//填充颜色- (void)stroke;//功能包括fill，并且会自动关闭上下文// These methods do not affect the blend mode or alpha of the current graphics context- (void)fillWithBlendMode:(CGBlendMode)blendMode alpha:(CGFloat)alpha;- (void)strokeWithBlendMode:(CGBlendMode)blendMode alpha:(CGFloat)alpha;- (void)addClip;//添加裁剪，会将路径之外的图案切除，但是必须在路径执行fill/stroke方法之前才有效