CAShapeLayer则hitTest触摸

Question

我不明白为什么一个CAShapeLayer并不则hitTest

回应此功能总是转到//触摸超出

如何检测在CAShapeLayer触摸？

 
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{ 

    currentPoint = [[touches anyObject] locationInView:self]; 

    for (CAShapeLayer *layer in self.layer.sublayers) {  

     if(layer == shapeLayer) { 

      if([layer hitTest:currentPoint]) 
      { 
       // touche is on the layer 
      } 
      else { 
       // touche is outside 
      } 

     } 

    }  

} 

Answer 1

在将我的头撞了两天后，我能够产生这个奇怪的代码，看起来就像在工作！

目标是击中测试CAShapeLayer。 CAShapeLayer正在屏幕上移动，所以形状不在固定位置。点击测试CGPath currentPoint并不简单。

随意添加任何输入...

 
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{ 

    CGPoint p = [[touches anyObject] locationInView:self]; 

    CGAffineTransform transf = CGAffineTransformMakeTranslation(-shapeLayer.position.x, -shapeLayer.position.y); 

    if(CGPathContainsPoint(shapeLayer.path, &transf, p, NO)){  

     // the touch is inside the shape 
    } 

}