IOS ☯️ 太极示例绘制

CGPointcenter =CGPointMake(self.frame.size.width*0.5,self.frame.size.height*0.5);

CGFloatradius =self.frame.size.width*0.5-50;

UIBezierPath*path = [UIBezierPathbezierPath];

[pathaddArcWithCenter:centerradius:radiusstartAngle:M_PI_2*3endAngle:M_PI_2clockwise:YES];

[pathaddCurveToPoint:CGPointMake(center.x, center.y- radius)controlPoint1:CGPointMake(center.x+ radius , center.y)controlPoint2:CGPointMake(center.x- radius , center.y)];

[[UIColorwhiteColor]setStroke];

[[UIColorblackColor]setFill];

path.lineWidth=5;

[pathstroke];

[pathfill];

UIBezierPath*path2 = [UIBezierPathbezierPath];

[path2addArcWithCenter:centerradius:radiusstartAngle:M_PI_2endAngle:M_PI_2*3clockwise:YES];

[path2addCurveToPoint:CGPointMake(center.x, center.y+ radius)controlPoint1:CGPointMake(center.x- radius , center.y)controlPoint2:CGPointMake(center.x+ radius , center.y)];

[[UIColorblackColor]setStroke];

[[UIColorwhiteColor]setFill];

path2.lineWidth=5;

[path2stroke];

[path2fill];