Moving an image after rotating does not behave correctly - objective-c

Question

I'm getting problem when I tried to move the after rotating the same image. My code is working fine when I tried to move the image before rotating it. After rotating the image, when I tried to move the rotated image, the image is not moving in the direction which I dragged. Can any one help me.
Thanks in advance. I'm using the code
#import "myDraggableImage.h"
#import <CoreGraphics/CoreGraphics.h>
#import <QuartzCore/CoreAnimation.h>
#implementation myDraggableImage
- (void) touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
{
[[self superview] bringSubviewToFront:self];
CGPoint pt = [[touches anyObject] locationInView:self];
startLocation = pt;
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:#selector(rotate:)];
[rotationRecognizer setDelegate:self];
[self addGestureRecognizer:rotationRecognizer];
[rotationRecognizer release];
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:#selector(scale:)];
[pinchRecognizer setDelegate:self];
[self addGestureRecognizer:pinchRecognizer];
[pinchRecognizer release];
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(move:)];
[panRecognizer setMinimumNumberOfTouches:1];
[panRecognizer setMaximumNumberOfTouches:1];
[panRecognizer setDelegate:self];
[self addGestureRecognizer:panRecognizer];
[panRecognizer release];
CGRect frame = [self frame];
printf("\n the x co ordinte of the frame is :%f",frame.origin.x);
printf("\n the y co ordinte of the frame is :%f",frame.origin.y);
printf("\n the widht co ordinte of the frame is :%f",frame.size.width);
printf("\n the height co ordinte of the frame is :%f",frame.size.height);
}
-(void)rotate:(id)sender
{
if([(UIRotationGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded)
{
lastRotation = 0.0;
return;
}
CGFloat rotation = 0.0 - (lastRotation - [(UIRotationGestureRecognizer*)sender rotation]);
CGAffineTransform currentTransform = [(UIPinchGestureRecognizer*)sender view].transform;
CGAffineTransform newTransform = CGAffineTransformRotate(currentTransform,rotation);
[[(UIRotationGestureRecognizer*)sender view] setTransform:newTransform];
lastRotation = [(UIRotationGestureRecognizer*)sender rotation];
CGRect frame = [self frame];
}
-(void)scale:(id)sender
{
if([(UIPinchGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded)
{
lastScale = 1.0;
return;
}
CGFloat scale = 1.0 - (lastScale - [(UIPinchGestureRecognizer*)sender scale]);
CGAffineTransform currentTransform = [(UIPinchGestureRecognizer*)sender view].transform;
CGAffineTransform newTransform = CGAffineTransformScale(currentTransform, scale, scale);
[[(UIPinchGestureRecognizer*)sender view] setTransform:newTransform];
lastScale = [(UIPinchGestureRecognizer*)sender scale];
}
-(void)move:(id)sender
{
[[[(UITapGestureRecognizer*)sender view] layer] removeAllAnimations];
CGAffineTransform currentTransform = [(UIPinchGestureRecognizer*)sender view].transform;
CGPoint translatedPoint = [(UIPanGestureRecognizer*)sender translationInView:self];
if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateBegan)
{
firstX = [[sender view] center].x;
firstY = [[sender view] center].y;
}
translatedPoint = CGPointMake(firstX+translatedPoint.x, firstY+translatedPoint.y);
[[sender view] setCenter:translatedPoint];
if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded)
{
CGFloat finalX = translatedPoint.x ;//+ (.15*[(UIPanGestureRecognizer*)sender velocityInView:self].x);
CGFloat finalY = translatedPoint.y ;//+ (.15*[(UIPanGestureRecognizer*)sender velocityInView:self].y);
if(finalX < 0)
{
finalX = 0;
}
else if(finalX > 460)
{
finalX = 440;
}
if(finalY < 40)
{
finalY = 40;
}
else if(finalY > 300)
{
finalY = 300;
}
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:.35];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
[[sender view] setCenter:CGPointMake(finalX, finalY)];
[UIView commitAnimations];
}
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return ![gestureRecognizer isKindOfClass:[UIPanGestureRecognizer class]];
}
-(void)dealloc
{
[super dealloc];
}
#end

Answer 1

touchesBegan:withEvent: is a wrong place to set up your gestures as it will add a new gestures every time the user. As for the translation function, it's hard to put a finger on what's wrong. Some of the process here seems overdone. While I haven't implemented the animation part (to bring it in, right?), take a look at this sample project. It could help you get started in the right direction.