I came across some very weird behaviour and I can't seem to find an
explanation for it.
I am trying to write a class that will store compressed ByteArrays that
are retreive throught the bitmapData.getPixels.
Here is some testing code, that I wrote for the testing if a
decompressed ByteArray can be parsed back into an Bitmapdata object.
It all works well if the uncompress/compress block is in the code. When
i comment that code out, I get this error:
Could someone tell me what is happening here?
<error>
Error: Error #2030: End of file was encountered.
at flash.display::BitmapData/setPixels()
at GreyFilter_fla::MainTimeline/frame1()
</error>
<code>
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.geom.Point;
import flash.geom.Rectangle;
var destPoint:Point = new Point();
var source:Sprite = getChildByName('mcWalkArea') as Sprite;
var sourceRect:Rectangle = new Rectangle(0, 0, source.width, source.height);
var a:BitmapData = new BitmapData(sourceRect.width, sourceRect.height);
var storedMapData:ByteArray;
a.draw( source );
//create a black and white area.
a.threshold(a, sourceRect, destPoint , "!=", 0xFFFFFFFF , 0xFF000000 );
storedMapData = a.getPixels(sourceRect);
/* Try uncommenting this
trace(storedMapData.length);
storedMapData.compress()
trace(storedMapData.length);
storedMapData.uncompress()
trace(storedMapData.length);
*/
var tData:BitmapData = new BitmapData(sourceRect.width , sourceRect.height)
tData.setPixels( sourceRect , storedMapData );
var i:int = 0
while(i < source.width){
trace( tData.getPixel(i , 0 ) )
i++
}
</code>
Jiri
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