CGAffineTransformMakeRotation

CGAffineTransformMakeRotation

我目前正在尝试在Objective-C中创建四个垂直滑块。我可以使用CGAffineTransform旋转它们,但现在每个滑块彼此堆叠。如何更改滑块的坐标,以免发生这种情况?

下面是我旋转滑块的代码:

CGAffineTransform trans1 = CGAffineTransformMakeRotation(M_PI * 1.5);
_grainPitchSlider.transform = trans1;

CGAffineTransform trans2 = CGAffineTransformMakeRotation(M_PI * 1.5);
_grainOffsetSlider.transform = trans2;

CGAffineTransform trans3 = CGAffineTransformMakeRotation(M_PI * 1.5);
_grainDensitySlider.transform = trans3;

CGAffineTransform trans4 = CGAffineTransformMakeRotation(M_PI * 1.5);
_grainDurationSlider.transform = trans4;

最佳答案

只需设置每个滑块的“中心”,即_grainPitchSlider.center = CGPointMake(x, y);

07-26 03:07