Faster draw

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3 total messages Started by Lloyd P. Goldwasser Fri, 14 Aug 1992 22:06

#1151

Author: Lloyd P. Goldwasser
Date: Fri, 14 Aug 1992 22:06

20 lines
1494 bytes

Are there any good NeXT examples floating around of the use of
Postscript forms (PS Reference Manual, 2nd ed., p. 172) for
speeding up drawing?  Does anyone have any experience with the
relative merits of forms vs. user defined paths?

Thanks in advance,

Lloyd Goldwasser
goldly@u.washington.edu

* - - - * - - - * - - - * - - - * - - - * - - - * - - - * - - - * - - - *
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*           may reasonably differ,                                      *
*    then I am a duck.                                                  *
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Re: Faster draw

#1157

Author: Alex Blakemore
Date: Sat, 15 Aug 1992 04:12

24 lines
1189 bytes

In article <1992Aug14.220646.5882@u.washington.edu> goldly@u.washington.edu (Lloyd P. Goldwasser) writes:
> Are there any good NeXT examples floating around of the use of
> Postscript forms (PS Reference Manual, 2nd ed., p. 172) for
> speeding up drawing?  Does anyone have any experience with the
> relative merits of forms vs. user defined paths?

absolutely.

AdobeExamples.tar.Z

available at your neighborhood NeXT Internet archive.
(e.g. sonata.cc.purdue.edu in pub/next/doc)

there is a book from Adobe that goes with the examples
"Programming the Display PostScript System with NeXTStep"
aka the purple book.

Adobe will send you one for less than $30, 1-(800)344-8335

-- 
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Alex Blakemore alex@cs.umd.edu   NeXT mail accepted

Re: Faster draw (PSL2 forms are SLOW)

#1198

Author: William Shipley
Date: Tue, 18 Aug 1992 02:01

20 lines
1326 bytes

Lloyd P. Goldwasser writes:
> Are there any good NeXT examples floating around of the use of
> Postscript forms (PS Reference Manual, 2nd ed., p. 172) for
> speeding up drawing?  Does anyone have any experience with the
> relative merits of forms vs. user defined paths?
> [...]I am a duck.

When I tested PR2 it appeared that PostScript Level 2 forms are currently no  
faster than simply redrawing your image multiple times with a clip path.

That is to say, they don't appear to be cached.  They sure oughta be, but they  
aren't.  Bummer.  Forms would be a great way to encode multi-color sprites, if  
they worked.

This may have changed with the final release of 3.0, but I kinda doubt it.

-William Shipley
The Omni Group

PS: Patterns, on the other hand, are cached.  They're tres fast.

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