Basic use of Calayer

1. 1. Rounded Corners
2. Invalid rounding for parent layer only
3. ImgView.layer.cornerRadius = 100;
4. This property allows all sublayers of the Uiimageview to change with the parent layer
5. ImgView.layer.masksToBounds = YES;
6. 2. Shadows
7. ImgView.layer.shadowColor = [Uicolor Bluecolor]. Cgcolor;
8. ImgView.layer.shadowOffset = Cgsizemake (10, 10);
9. imgView.layer.shadowOpacity = 0.8;

10.//3. Setting transform, deformation

1. (1) Panning
2. ImgView.layer.transform = catransform3dmaketranslation (0,-100, 0);
3. (2) Rotation
4. The axis of rotation along which the value is 1
5. ImgView.layer.transform = catransform3dmakerotation (m_pi, 0, 0, 1);
6. (3) Zoom
7. ImgView.layer.transform = Catransform3dmakescale (0.5, 1, 1);

Search for Transform3D in 18.//documents to get KeyPath

1. Move Up 100
2. [Imgview.layer setvalue:@-100 forkeypath:@ "TRANSFORM.TRANSLATION.Y"];
3. Rotate counterclockwise 45 degrees along the z axis
4. [Imgview.layer setvalue:@-m_pi_4 forkeypath:@ "Transform.rotation.z"];

25. Custom Calayer

26.//1. You must add a custom layer to the parent layer to display.

1. [Self.view.layer Addsublayer:mylayer];

28.//2. Setting the display properties of a layer

1. Dimensions and Colors
2. Mylayer.bounds = CGRectMake (0, 0, 200, 200);
3. Mylayer.backgroundcolor = [Uicolor Redcolor]. Cgcolor;
4. Display location, default is the center point, and the location is determined by the anchor point.
5. Mylayer.position = cgpointmake (100, 100);

34.//anchor point, default value is 0.5,0.5

1. Mylayer.anchorpoint = Cgpointmake (0.5, 0.5);

The values of 36.//position and anchorpoint determine where the layer is displayed.

37.//layer zooms in and out with the anchor point as the center point when zoomed in and zoomed out.

38.UIImage *image = [UIImage imagenamed:@ "2012100413195471481.jpg"];

39.mylayer.contents = (ID) image. Cgimage;

41.//fades the animation, changing the layer's transparency, ranging from 0 to 1. Mylayer.opacity

43.//self.view.layer is a rootlayer, no implicit animation effect. All non-rootlayer have an implicit animation effect.

Basic use of Calayer