在Objective-C中发出带有两个端点的绘图线

Question

我尝试绘制一条线，其中每一端都有一个圆形点，并将其作为图层添加到视图中。我有一般的概念，但正如你从屏幕截图中看到的那样，这条线有点错位，我还没有找到原因。

我也不确定为什么会有一条线开始（正如你所看到的，我已经注释掉了应该用来画线的两条线，但是无论如何都画了一条线。）

//Draw circle
UIBezierPath *path = [UIBezierPath bezierPathWithArcCenter:CGPointMake(100, 100) radius:10 startAngle:0 endAngle:DEGREES_TO_RADIANS(360) clockwise:TRUE];

//Add second circle
[path addArcWithCenter:CGPointMake(200.0, 200.0) radius:10 startAngle:0 endAngle:DEGREES_TO_RADIANS(360) clockwise:TRUE];
//[path addLineToPoint:CGPointMake(200.0, 200.0)];
//[path moveToPoint:CGPointMake(200.0, 200.0)];

[path closePath];
[[UIColor redColor] setStroke];
[[UIColor redColor] setFill];
[path stroke];
[path fill];

CAShapeLayer *shapeLayer = [CAShapeLayer layer];
shapeLayer.path = [path CGPath];
shapeLayer.strokeColor = [[UIColor redColor] CGColor];
shapeLayer.lineWidth = 4.0;
shapeLayer.fillColor = [[UIColor redColor] CGColor];

[self.view.layer addSublayer:shapeLayer];

感谢任何帮助！

Answer 1

UIBezierPath *path = [UIBezierPath bezierPathWithArcCenter:CGPointMake(100, 100) radius:10 startAngle:0 endAngle:DEGREES_TO_RADIANS(360) clockwise:TRUE];     

//Add second circle
[path moveToPoint:CGPointMake(100.0, 100.0)];
[path addLineToPoint:CGPointMake(200, 200)];
[path moveToPoint:CGPointMake(200, 200)];

[path addArcWithCenter:CGPointMake(200, 200) radius:10 startAngle:0 endAngle:DEGREES_TO_RADIANS(360) clockwise:TRUE];