本文介绍了Objective-c CATransform3DMakeRotation顺时针/逆时针的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在使用 CATransform3DMakeRotation
沿 x轴旋转 UIView
下面的代码:
I'm rotating an UIView
along the x axis using CATransform3DMakeRotation
using the below code:
float radians = DegreesToRadians(30);
[UIView animateWithDuration:0.15 animations:^{
self.moveControlView.layer.transform = CATransform3DMakeRotation(radians,1,0,0);
}];
旋转始终以相同的方式应用,而不是(顺时针)。我想在相反的方向旋转 UIView
。
为了实现我的目标,我尝试过:
The rotation is applied always in the same versus (clockwise). I want to rotate the UIView
in the opposite versus.In order to achieve my goal I've tried:
- 设置负角(-30)
- 将角度设置为330
但是方向的vs不变。
我还尝试将 x = -1
设置为使角度为正。
I have also try to set x = -1
leaving the angle positive.
有任何建议吗?
推荐答案
您应该对转换应用透视图,如:
You should apply a perspective to your transform, as it's explained in the similar question:
CATransform3D perspectiveTransform = CATransform3DIdentity;
perspectiveTransform.m34 = 1.0 / -500;
self.moveControlView.layer.transform =
CATransform3DRotate(perspectiveTransform, radians, 1.0f, 0.0f, 0.0f);;
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