旋转NSImageView会导致NSImageView缩放

Question

我使用下面的代码来旋转一个NSImageView (实际上是三个堆叠在一起)旋转效果很好，但图像在旋转时会放大和缩小。为什么？我怎么才能修复它呢？

- (void)UpdateRotate:(CGPoint)mouseLoc{

mouseLoc.y = mouseLoc.y - 200;

CGPoint playerMid = CGPointMake(prect.xPos, prect.yPos);

x = mouseLoc.x - playerMid.x;
y = mouseLoc.y - playerMid.y;
double priorResult = rot;
rot = atan2(y,x) * 180 / PI;

[image rotateByAngle:-priorResult];
[image rotateByAngle:rot];
[image setNeedsDisplay:YES];
[WeaponImage rotateByAngle:-priorResult];
[WeaponImage rotateByAngle:rot];
[WeaponImage setNeedsDisplay:YES];
[ShieldImage rotateByAngle:-priorResult];
[ShieldImage rotateByAngle:rot];
[ShieldImage setNeedsDisplay:YES];
}

解决了！

我没有旋转每个NSImageView，而是旋转了包含所有ImageViews =D的整个NSView

代码：

[self setFrameCenterRotation:-priorResult];
[self setFrameCenterRotation:rot];
[self setNeedsDisplay:YES];

Answer 1

也许用NSImageScaleNone调用- (void)setImageScaling:(NSImageScaling)newScaling；来关闭伸缩？

Answer 2

使用：

[anImageView setFrameCenterRotation:angleInDegrees];