NSView not rotating around center
1
I'm trying to rotate a NSView around its center. But even if I change the anchorPoint, the NSView continue to rotate around its top left corner. Just a precision : I'm working on OSX 10.8.5.
Thanks in advance for your help.
Here is my code :
// myView.m
- (id)initWithFrame:(NSRect)rect
{
if(self = [super initWithFrame:(NSRect)rect])
{
self.frame = rect;
[self setWantsLayer:YES];
self.layer.backgroundColor = [NSColor whiteColor].CGColor;
self.layer.borderColor = [NSColor grayColor].CGColor;
self.layer.borderWidth = 1.0;
NSView *aView = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 50, 50)];
[aView setWantsLayer:YES];
aView.layer.backgroundColor = [NSColor redColor].CGColor;
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
[self addSubview:aView];
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 4;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"];
}
}
EDITED 30-11-2018 : I managed to get the centered rotation using the layers :
// myView.m
- (id)initWithFrame:(NSRect)rect
{
if(self = [super initWithFrame:(NSRect)rect])
{
self.frame = rect;
[self setWantsLayer:YES];
self.layer.backgroundColor = [NSColor whiteColor].CGColor;
self.layer.borderColor = [NSColor grayColor].CGColor;
self.layer.borderWidth = 1.0;
NSView *aView = [[NSView alloc] init];
[aView setWantsLayer:YES];
aView.layer.backgroundColor = [NSColor redColor].CGColor;
aView.layer.bounds = CGRectMake(0, 0, 50, 50);
aView.layer.frame = CGRectMake(0, 0, 50, 50);
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(0, 0);
[self.layer addSublayer:aView.layer];
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 4;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"];
}
}
nsview cabasicanimation anchorpoint
asked Nov 26 '18 at 8:35
Jeff DolphinJeff Dolphin
176
add a comment |
1
I'm trying to rotate a NSView around its center. But even if I change the anchorPoint, the NSView continue to rotate around its top left corner. Just a precision : I'm working on OSX 10.8.5.
Thanks in advance for your help.
Here is my code :
// myView.m
- (id)initWithFrame:(NSRect)rect
{
if(self = [super initWithFrame:(NSRect)rect])
{
self.frame = rect;
[self setWantsLayer:YES];
self.layer.backgroundColor = [NSColor whiteColor].CGColor;
self.layer.borderColor = [NSColor grayColor].CGColor;
self.layer.borderWidth = 1.0;
NSView *aView = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 50, 50)];
[aView setWantsLayer:YES];
aView.layer.backgroundColor = [NSColor redColor].CGColor;
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
[self addSubview:aView];
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 4;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"];
}
}
EDITED 30-11-2018 : I managed to get the centered rotation using the layers :
// myView.m
- (id)initWithFrame:(NSRect)rect
{
if(self = [super initWithFrame:(NSRect)rect])
{
self.frame = rect;
[self setWantsLayer:YES];
self.layer.backgroundColor = [NSColor whiteColor].CGColor;
self.layer.borderColor = [NSColor grayColor].CGColor;
self.layer.borderWidth = 1.0;
NSView *aView = [[NSView alloc] init];
[aView setWantsLayer:YES];
aView.layer.backgroundColor = [NSColor redColor].CGColor;
aView.layer.bounds = CGRectMake(0, 0, 50, 50);
aView.layer.frame = CGRectMake(0, 0, 50, 50);
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(0, 0);
[self.layer addSublayer:aView.layer];
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 4;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"];
}
}
nsview cabasicanimation anchorpoint
asked Nov 26 '18 at 8:35
Jeff DolphinJeff Dolphin
176
Very helpful example ! For beginners, I like to add 2 things: 1.) it needs to add the Quartz framework library to run. 2.) Using the sample code of Jeff, a View of myView must be added to any window.
– Christian Krueger
Mar 22 at 11:39
add a comment |
1
1
1
I'm trying to rotate a NSView around its center. But even if I change the anchorPoint, the NSView continue to rotate around its top left corner. Just a precision : I'm working on OSX 10.8.5.
Thanks in advance for your help.
Here is my code :
// myView.m
- (id)initWithFrame:(NSRect)rect
{
if(self = [super initWithFrame:(NSRect)rect])
{
self.frame = rect;
[self setWantsLayer:YES];
self.layer.backgroundColor = [NSColor whiteColor].CGColor;
self.layer.borderColor = [NSColor grayColor].CGColor;
self.layer.borderWidth = 1.0;
NSView *aView = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 50, 50)];
[aView setWantsLayer:YES];
aView.layer.backgroundColor = [NSColor redColor].CGColor;
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
[self addSubview:aView];
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 4;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"];
}
}
EDITED 30-11-2018 : I managed to get the centered rotation using the layers :
// myView.m
- (id)initWithFrame:(NSRect)rect
{
if(self = [super initWithFrame:(NSRect)rect])
{
self.frame = rect;
[self setWantsLayer:YES];
self.layer.backgroundColor = [NSColor whiteColor].CGColor;
self.layer.borderColor = [NSColor grayColor].CGColor;
self.layer.borderWidth = 1.0;
NSView *aView = [[NSView alloc] init];
[aView setWantsLayer:YES];
aView.layer.backgroundColor = [NSColor redColor].CGColor;
aView.layer.bounds = CGRectMake(0, 0, 50, 50);
aView.layer.frame = CGRectMake(0, 0, 50, 50);
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(0, 0);
[self.layer addSublayer:aView.layer];
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 4;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"];
}
}
nsview cabasicanimation anchorpoint
asked Nov 26 '18 at 8:35
Jeff DolphinJeff Dolphin
176
I'm trying to rotate a NSView around its center. But even if I change the anchorPoint, the NSView continue to rotate around its top left corner. Just a precision : I'm working on OSX 10.8.5.
Thanks in advance for your help.
Here is my code :
// myView.m
- (id)initWithFrame:(NSRect)rect
{
if(self = [super initWithFrame:(NSRect)rect])
{
self.frame = rect;
[self setWantsLayer:YES];
self.layer.backgroundColor = [NSColor whiteColor].CGColor;
self.layer.borderColor = [NSColor grayColor].CGColor;
self.layer.borderWidth = 1.0;
NSView *aView = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 50, 50)];
[aView setWantsLayer:YES];
aView.layer.backgroundColor = [NSColor redColor].CGColor;
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
[self addSubview:aView];
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 4;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"];
}
}
EDITED 30-11-2018 : I managed to get the centered rotation using the layers :
// myView.m
- (id)initWithFrame:(NSRect)rect
{
if(self = [super initWithFrame:(NSRect)rect])
{
self.frame = rect;
[self setWantsLayer:YES];
self.layer.backgroundColor = [NSColor whiteColor].CGColor;
self.layer.borderColor = [NSColor grayColor].CGColor;
self.layer.borderWidth = 1.0;
NSView *aView = [[NSView alloc] init];
[aView setWantsLayer:YES];
aView.layer.backgroundColor = [NSColor redColor].CGColor;
aView.layer.bounds = CGRectMake(0, 0, 50, 50);
aView.layer.frame = CGRectMake(0, 0, 50, 50);
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(0, 0);
[self.layer addSublayer:aView.layer];
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 4;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"];
}
}
nsview cabasicanimation anchorpoint
nsview cabasicanimation anchorpoint
asked Nov 26 '18 at 8:35
Jeff DolphinJeff Dolphin
176
asked Nov 26 '18 at 8:35
Jeff DolphinJeff Dolphin
176
edited Nov 30 '18 at 11:09
Jeff Dolphin
asked Nov 26 '18 at 8:35
Jeff DolphinJeff Dolphin
176
asked Nov 26 '18 at 8:35
Jeff DolphinJeff Dolphin
176
asked Nov 26 '18 at 8:35
Jeff DolphinJeff Dolphin
176
176
Very helpful example ! For beginners, I like to add 2 things: 1.) it needs to add the Quartz framework library to run. 2.) Using the sample code of Jeff, a View of myView must be added to any window.
– Christian Krueger
Mar 22 at 11:39
add a comment |
Very helpful example ! For beginners, I like to add 2 things: 1.) it needs to add the Quartz framework library to run. 2.) Using the sample code of Jeff, a View of myView must be added to any window.
– Christian Krueger
Mar 22 at 11:39
Very helpful example ! For beginners, I like to add 2 things: 1.) it needs to add the Quartz framework library to run. 2.) Using the sample code of Jeff, a View of myView must be added to any window.
– Christian Krueger
Mar 22 at 11:39
Very helpful example ! For beginners, I like to add 2 things: 1.) it needs to add the Quartz framework library to run. 2.) Using the sample code of Jeff, a View of myView must be added to any window.
– Christian Krueger
Mar 22 at 11:39
add a comment |
1 Answer
1
active
oldest
votes
0
If you want to rotate a view you can do:
-(void)rotateByCenter:(NSView*)aView {
[aView setWantsLayer:YES];
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(aView.frame.origin.x + aView.frame.size.width/2.,aView.frame.origin.y + aView.frame.size.height/2.) ;
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 20;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"]; }
answered Mar 22 at 11:43
Christian KruegerChristian Krueger
979
add a comment |
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1 Answer
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1 Answer
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active
oldest
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oldest
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oldest
votes
0
If you want to rotate a view you can do:
-(void)rotateByCenter:(NSView*)aView {
[aView setWantsLayer:YES];
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(aView.frame.origin.x + aView.frame.size.width/2.,aView.frame.origin.y + aView.frame.size.height/2.) ;
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 20;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"]; }
answered Mar 22 at 11:43
Christian KruegerChristian Krueger
979
add a comment |
0
If you want to rotate a view you can do:
-(void)rotateByCenter:(NSView*)aView {
[aView setWantsLayer:YES];
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(aView.frame.origin.x + aView.frame.size.width/2.,aView.frame.origin.y + aView.frame.size.height/2.) ;
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 20;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"]; }
answered Mar 22 at 11:43
Christian KruegerChristian Krueger
979
add a comment |
0
0
0
If you want to rotate a view you can do:
-(void)rotateByCenter:(NSView*)aView {
[aView setWantsLayer:YES];
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(aView.frame.origin.x + aView.frame.size.width/2.,aView.frame.origin.y + aView.frame.size.height/2.) ;
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 20;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"]; }
answered Mar 22 at 11:43
Christian KruegerChristian Krueger
979
If you want to rotate a view you can do:
-(void)rotateByCenter:(NSView*)aView {
[aView setWantsLayer:YES];
aView.layer.anchorPoint = CGPointMake(0.5, 0.5);
aView.layer.position = CGPointMake(aView.frame.origin.x + aView.frame.size.width/2.,aView.frame.origin.y + aView.frame.size.height/2.) ;
CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotateAnimation.byValue = [NSNumber numberWithFloat:2*M_PI];
rotateAnimation.duration = 20;
rotateAnimation.repeatCount = INFINITY;
[aView.layer addAnimation:rotateAnimation forKey:@"rotationAnimation"]; }
answered Mar 22 at 11:43
Christian KruegerChristian Krueger
979
answered Mar 22 at 11:43
Christian KruegerChristian Krueger
979
answered Mar 22 at 11:43
Christian KruegerChristian Krueger
979
answered Mar 22 at 11:43
Christian KruegerChristian Krueger
979
979
add a comment |
add a comment |
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Very helpful example ! For beginners, I like to add 2 things: 1.) it needs to add the Quartz framework library to run. 2.) Using the sample code of Jeff, a View of myView must be added to any window.
– Christian Krueger
Mar 22 at 11:39