Flash MX 2004.
document.traceBitmap(threshold, minimumArea, curveFit, cornerThreshold)
threshold An integer that controls the number of colors in your traced bitmap. Acceptable values are integers between 0 and 500. minimumArea An integer that specifies the radius measured in pixels. Acceptable values are integers between 1 and 1000. curveFit A string that specifies how smoothly outlines are drawn. Acceptable values are "pixels", "very tight", "tight", "normal", "smooth", and "very smooth". cornerThreshold A string that is similar to curveFit, but it pertains to the corners of the bitmap image. Acceptable values are "many corners", "normal", and "few corners".
Nothing.
Method; performs a trace bitmap on the current selection. This method is equivalent to selecting Modify >Bitmap>Trace Bitmap.
The following example traces the selected bitmap, using the specified parameters:
fl.getDocumentDOM().traceBitmap(0, 500, 'normal', 'normal');