DisplacementMapFilter - Adobe ActionScript 3 (AS3 ) API Reference

This question was posted in response to the following article: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/filters/Displacem entMapFilter.html

I think there may be a typo:
dstPixel[x, y] = srcPixel[x + ((componentX(x, y) - 128) * scaleX) / 256, y + ((componentY(x, y) - 128) *scaleY) / 256)
shouldn't this be:
dstPixel[x, y] = srcPixel[x + ((componentX(x, y) - 128) * scaleX) / 128, y + ((componentY(x, y) - 128) *scaleY) / 128)

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