ios - 我需要在 objective-c 中创建一个 3D 旋转框

Question

我需要使用 objective-c 创建一个 3D 旋转框(立方体)。我已经学习了几个教程，但不知道如何正确地使用它们来获得这样的东西..

https://www.dropbox.com/s/1zjbglmveg02364/cover17.zip?dl=0

有人可以指导如何将 CAlayer 或 UIView 与 CATransform3DRotate 和 CATransform3DTranslate 一起使用来实现这一目标吗？

Answer 1

四面体:

CATransform3D pt = CATransform3DIdentity;
pt.m34 = -1.0 / 500.0;
self.containerView.layer.sublayerTransform = pt;

_cubeLayer = [CATransformLayer layer];

CALayer *face1 = [CALayer layer];
face1.backgroundColor = [UIColor redColor].CGColor;
face1.frame = CGRectMake(0, 0, 100, 100);
face1.transform = CATransform3DTranslate(face1.transform, 0, 0, 50);
[_cubeLayer addSublayer:face1];

CALayer *face2 = [CALayer layer];
face2.backgroundColor = [UIColor greenColor].CGColor;
face2.frame = CGRectMake(0, 0, 100, 100);
face2.transform = CATransform3DTranslate(face2.transform, 0, 50, 0);
face2.transform = CATransform3DRotate(face2.transform, M_PI / 2, 1, 0, 0);
[_cubeLayer addSublayer:face2];

CALayer *face3 = [CALayer layer];
face3.backgroundColor = [UIColor yellowColor].CGColor;
face3.frame = CGRectMake(0, 0, 100, 100);
face3.transform = CATransform3DTranslate(face3.transform, 0, -50, 0);
face3.transform = CATransform3DRotate(face3.transform, M_PI / 2, 1, 0, 0);
[_cubeLayer addSublayer:face3];

CALayer *face4 = [CALayer layer];
face4.backgroundColor = [UIColor blueColor].CGColor;
face4.frame = CGRectMake(0, 0, 100, 100);
face4.transform = CATransform3DTranslate(face4.transform, 0, 0, -50);
[_cubeLayer addSublayer:face4];


_cubeLayer.frame = CGRectMake(0, 0, 100, 100);

[self.containerView.layer addSublayer:_cubeLayer];

旋转:

self.cubeLayer.transform = CATransform3DRotate(_cubeLayer.transform, M_PI / 2, 1, 0, 0);

结果: