Large Image Renderer

ok have little problem saving high resolution images (png or jpeg) disk air application. making pages printing , there big pictures filters on them on pages. thing images rendering have larger maximum bitmapdata width or height, 8191, in pixels wich first results in filters breaking , wont show , images breaking wont show up. tought of splitting end result in smaller squares make whole. png in 8000 x 8000 4 2000 x 2000. im using imagesnapshot.captureimage this:

 

     var mybitmap:bitmapdata = new bitmapdata(pageparthwidth, pagepartheight);

 

     mybitmap.draw(page);

     var imgss:imagesnapshot = imagesnapshot.captureimage(page, 72, new pngencoder(), false);

 

 

the page variable s:scroller has page in s:group. before each part renderers imagesnapshot change s:scroller's  verticalscrollposition , horizontalscrollposition render next part. problem stated if page(s:group) inside s:scoller has image big break or/and filter break , not show in saved part. there way around flash draws whats inside scoller @ moment?

 

so real question can scale part of interface in flash? hop understand mean

 

 

 

 

does scroller this:

 

<s:scroller ...>
    <s:group id="viewport">
        <s:image />
        <s:image />
        <s:image />
        <s:image />
    </s:group>
</s:scroller>

 

more specifically, images directly inside of "viewport" group or inside sub-group of viewport?

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