ios-設置CCSprite的框架解答

設置CCSprite的框架解答

需要使用CCSprite以多種尺寸顯示圖片。通常添加到CCSprite的圖片都有固定的寬高。有沒有方法能讓我像下面代碼一樣，不用一開始手動設置圖片的尺寸。然後將圖片放到ccpsrite。

-(UIImage*)imageByScalingAndCroppingForSize:(CGSize)targetSize image:(UIImage*)sourceImage
{
    UIImage *newImage = sourceImage;
CGSize imageSize = sourceImage.size;

/// Source image is of desired size or desired size 0x0, no change is done
if (!CGSizeEqualToSize(targetSize, CGSizeZero) && !CGSizeEqualToSize(imageSize, targetSize))
{
    CGFloat aspectRatio = imageSize.width / imageSize.height;
    CGFloat newAspectRatio = targetSize.width / targetSize.height;

    CGSize tempSize = targetSize;
    if (newAspectRatio < aspectRatio)
    {
        tempSize.width = targetSize.width * aspectRatio / newAspectRatio;
    }
    else
    {
        tempSize.height = targetSize.height * newAspectRatio / aspectRatio;
    }
    UIGraphicsBeginImageContext(targetSize);
    [sourceImage drawInRect:CGRectMake((targetSize.width - tempSize.width) / 2.0, (targetSize.height - tempSize.height) / 2.0, tempSize.width, tempSize.height)];
    newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

}
return newImage;
}

最佳回答：

可以調整CCSprite. CCSprite是CCNode的子類，CCNode有這些屬性：

/** The scale factor of the node. 1.0 is the default scale factor. It modifies the X and Y scale at the same time. */
@property(nonatomic,readwrite,assign) float scale;
/** The scale factor of the node. 1.0 is the default scale factor. It only modifies the X scale factor. */
@property(nonatomic,readwrite,assign) float scaleX;
/** The scale factor of the node. 1.0 is the default scale factor. It only modifies the Y scale factor. */
@property(nonatomic,readwrite,assign) float scaleY;