从相机卷导入图像并裁剪

我从相机卷加载图像并将其发送到一个函数,该函数基于我创建的矩形返回原始图像的一部分。然后我可以毫无问题地将其添加到场景中。

当我想加载原始图像的另一部分时,就会出现问题。我想创建两个小精灵,每个小精灵都有原始图像的不同部分,就像拼图一样,但当我发送原始图像和不同的矩形时,我得到了第一次相同的图像,并将两个相同的图像添加到场景中。

您有什么想法吗?

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    // newImage is a UIImage do not try to use a UIImageView
    UIImage *newImage = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
    UIImage *newImage2 = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
    //newImage2 = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
    // Dismiss UIImagePickerController and release it
    [picker dismissModalViewControllerAnimated:YES];
    [picker.view removeFromSuperview];
    [picker    release];

    CGRect newRect = CGRectMake(0, 0, 320, 460);
    CGRect newRect2 = CGRectMake(600, 600, 100, 100);

    UIImage *testImage = [self imageFromImage:newImage inRect:newRect];
    UIImage *testImage2 = [self imageFromImage:newImage2 inRect:newRect2];

    CCSprite *scaledImage = [CCSprite spriteWithCGImage:testImage.CGImage key:@"ImageFromPicker"];
    scaledImage.position = ccp(s.width/2, s.height/2);
    [self addChild:scaledImage];

    CCSprite *scaledImage2 = [CCSprite spriteWithFile:@"play.png"];//[CCSprite spriteWithCGImage:testImage2.CGImage key:@"ImageFromPicker"];
    scaledImage2.position = ccp(560,40);
    [self addChild:scaledImage2];
}

以及裁剪图像的方法:

- (UIImage *)imageFromImage:(UIImage *)image inRect:(CGRect)rect
{
    CGImageRef sourceImageRef = [image CGImage];
    CGImageRef newImageRef = CGImageCreateWithImageInRect(sourceImageRef, rect);
    UIImage *tempImage = [UIImage imageWithCGImage:newImageRef];
    return tempImage;
}