NetNews Usenet Archive 1992 #26/NN_1992_26.iso/spool/comp/sys/acorn/9420

Text File | 1992-11-07 | 1.6 KB | 36 lines

Newsgroups: comp.sys.acorn
Path: sparky!uunet!pmafire!mica.inel.gov!ux1!news.byu.edu!eff!sol.ctr.columbia.edu!The-Star.honeywell.com!umn.edu!student.tc.umn.edu!alla0008
From: [e-mail] ()
Subject: Re: SPRITE TO DRAW
Message-ID: <[e-mail]>
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Organization: University of Minnesota
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Date: Fri, 6 Nov 1992 16:47:57 GMT
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In article <[e-mail]> [e-mail] (064230062: Fernmeldedirektion Olten) writes:
>Cold anyone explain what exactly this
>Trace does?
>If I wanto convert a sprite-file into
>a draw-file I only drag the Sprite-file
>on the Draw-Icon on the iconbar.

Doing this only embeds the original sprite in a draw file - if you attempt to
re-scale it or rotate it, it is still treated as a sprite, with all the
limitations which go with transforming a bitmap image.

!Trace looks for edges in the sprite and produces drawfile path objects,
filling them as appropriate to produce a draw-format version of the
original sprite. The image is now a collection of Draw path objects, so
can now be edited/altered with Draw, and rotated/rescaled arbitrarily.

Trace does a pretty good job of this, on the whole - obviously it only
works well on sprites which have relatively large blocks of pure colours
(on a sprite containing lots of dithering, such as from some scanners,
there aren't any obvious edges for the program to trace around).

Graham                        [e-mail]
                        [e-mail]