Spritekit - not loading @3x images from SKTextureAtlas

Question

Since my sample project was deleted (I thought this would be much easier to test), I will post some code and images to illustrate my point.

Here are sample images

Answer 1

Not sure why this was never done, but here is the start of a workaround that is actually correct, but is a little slower unfortunately. Maybe someone can see some things to make it process faster

import Foundation
import SpriteKit

public class Atlas: SKTextureAtlas
{
    var textures = [String:(texture:SKTexture,image:UIImage)]();
    public convenience init(named name: String)
    {
        self.init()
        let scale = CGFloat(UIScreen().scale);
        let path = "\(name).atlasc/\(name)";
        let atlasContent = NSDictionary(contentsOfFile: NSBundle.mainBundle().pathForResource(path, ofType: "plist")!);

        let content = atlasContent!["images"] as! [[String:AnyObject]];
        let info = content[Int(scale) - 1] ;
        let imagepath = "\(name).atlasc/\((info["path"] as! String!).stringByReplacingOccurrencesOfString(".png", withString: ""))";
        let imgDataProvider = CGDataProviderCreateWithCFData(NSData(contentsOfFile:  NSBundle.mainBundle().pathForResource(imagepath, ofType: "png")!));
        let cgimage = CGImageCreateWithPNGDataProvider(imgDataProvider, nil, true, .RenderingIntentDefault);

        let subimages = info["subimages"] as! [[String:AnyObject]];
        for subimage in subimages
        {
            let spriteSourceSize = CGSizeFromString(subimage["spriteSourceSize"] as! String);
            let size = CGSizeApplyAffineTransform(spriteSourceSize, CGAffineTransformMakeScale(1/scale,1/scale));



            let isFullyOpaque = subimage["isFullyOpaque"] as! Bool;
            let spriteOffset = CGPointFromString((subimage["spriteOffset"] as! String));
            let textureRect = CGRectFromString((subimage["textureRect"] as! String));
            let textureRectSize = CGSizeApplyAffineTransform(textureRect.size, CGAffineTransformMakeScale(1/scale,1/scale));




            let name = (subimage["name"] as! String).stringByReplacingOccurrencesOfString("@3x.png", withString: "");
            let textureRotated = subimage["textureRotated"] as! Bool;
            let smallImage = CGImageCreateWithImageInRect(cgimage, textureRect);



            UIGraphicsBeginImageContextWithOptions(size, isFullyOpaque, scale);
            let context = UIGraphicsGetCurrentContext();
            CGContextSaveGState(context);
            CGContextSetShouldAntialias(context,false);
            CGContextSetAllowsAntialiasing( context ,false);
            CGContextSetInterpolationQuality(context , CGInterpolationQuality.None)

            if(textureRotated)
            {
                CGContextTranslateCTM(context, (size.width)/2, (size.height)/2);
                  CGContextScaleCTM(context, 1, -1);
                  CGContextRotateCTM(context,CGFloat(M_PI_2));
                  CGContextTranslateCTM(context, 0, ((size.height - textureRectSize.height)));
                CGContextTranslateCTM(context, -((size.height)/2), -((size.width)/2));
                CGContextTranslateCTM(context, spriteOffset.y/scale, -spriteOffset.x/scale);

            }
            else
            {
                //Set to center of image to flip correctly
                CGContextTranslateCTM(context, (size.width)/2, (size.height)/2);
                    CGContextScaleCTM(context, 1, -1);
                CGContextTranslateCTM(context, -((size.width)/2), -((size.height)/2));
                CGContextTranslateCTM(context, spriteOffset.x/scale, spriteOffset.y/scale);

            }

            CGContextDrawImage(context,CGRect(origin: CGPoint.zero,size: textureRectSize), smallImage);
            let image = UIGraphicsGetImageFromCurrentImageContext();
            let texture = SKTexture(image: image);
            textures[name] = (texture:texture,image:image);
            CGContextRestoreGState(context);
            UIGraphicsEndImageContext();
        }
    }
    override public func textureNamed(name: String) -> SKTexture {
        return textures[name]!.texture;
    }
    public func imageNamed(name: String) -> UIImage {
        return textures[name]!.image;
    }
}