CompuServe Messages

How to anti-alias in IP?

    08-Jul-91 22:48:21
Fm: Black Belt Systems 76004,1771
To: Charles Blaquiere 76046,1756
Blaq, it depends on where the text is, and where the anti-aliasing is. If you have a text object, just created from a font, it is masked at the pixel boundries that the font defines. This means that the anti-aliasing you might do on the font (in this initial state) can only operate upon pixels that are _inside_ the characters, as all pixels outside the characters are masked, and therefore unchangable. If you bring the text into an image (using brush, or combine, etc) then you can anti-alias the text "locally", that is, in the current image context – which allows you to anti-alias pixels outside the font but at the edge of it. This is ideal – because the local colors, those you have in the image where the text has been placed – are used for the anti-alias calculation. I'd clip the region after the text was dropped, then work close and anti-alias carefully using the paint brush anti-alias mode (I forget – is that in 4.4 or only 4.5?) if it's not in 4.4, use the freehand anti-alias tool in the process panel. If there is a specific situation you can describe, that would help – but these should serve as general guidelines. Ben Amateur Radio Callsign is A A 7 A S