我正在实现一个应用程序,在该应用程序中我使用一些“CALayers”来创建一些表单。例如 :
testLayer = [CALayer layer];
testLayer.frame = layerRect;
testLayer.position = self.view.center;
CGFloat degrees = 90.0;
CGFloat radians = DegreesToRadians(degrees);
CATransform3D rotation = CATransform3DMakeRotation(radians, 0.0, 1.0, 0.0);
CATransform3D translation = CATransform3DMakeTranslation(Layer_Size/2, 0.0, Layer_Size/-2);
CATransform3D position = CATransform3DConcat(rotation, translation);
testLayer.transform = position;
该层添加在:
transformLayer = [CATransformLayer layer];
[transformLayer addSublayer:testLayer];
transformLayer.anchorPointZ = Layer_Size/-2;
但是我想获取 testLayer 上一个点的 Z 值,该点被命名为 testLayerPoint(类型为“UIView”,大小为 1x1),因为当我想将坐标投影到主视图的计划中时,如下所示:
CGRect rectTest = [testLayerPoint.layer convertRect:[[testLayerPoint.layer presentationLayer] frame] toLayer:self.view.layer];
编码 :
NSLog(@"%f", rectTest.x);
给出的坐标不正确……所以我想直接得到 Z 值。
谢谢 !