How to do refresh screen in postscript

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2 total messages Started by Sharma Kunapalli Thu, 19 Nov 1992 22:57

#5753

Author: Sharma Kunapalli
Date: Thu, 19 Nov 1992 22:57

23 lines
896 bytes

Hi All,
	I have recently started to learn postscript.
What I want to be able to do is to 

draw a box
display it
pause for a sec
delete the box
move the box
refresh screen

which in a sense is animation. Is this at all possible
using postscript? (I am more interested in the pause, 
delete and refresh features)

Thanks in advance

Sharma
-- 
The opinions expressed here are solely mine. My company has nothing
to do with these.

Email: sharma@euler.warren.mentorg.com

Re: How to do refresh screen in postscript

#5763

Author: Allen B
Date: Fri, 20 Nov 1992 15:42

25 lines
1506 bytes

In article <1eh651INN16g@euler.Warren.MENTORG.COM> sharma@Warren.MENTORG.COM  
(Sharma Kunapalli) writes:
> Hi All,
> 	I have recently started to learn postscript.
> What I want to be able to do is...
> ...in a sense is animation. Is this at all possible
> using postscript? (I am more interested in the pause, 
> delete and refresh features)

Yes, but it depends somewhat on your environment.  I've
written files like that and the old Preview on the NeXT
would display them the way I wanted, but most would cache
all the stuff up and wouldn't display it in real-time.

You can make a "flip book" by making each frame a page and
putting in the proper DSC for each.  Then you can flip it on
the screen with a previewer.

Usually, you'd want to do the display part in PostScript
and the timing and frame advancement in another way.  What
environment is this to run in?

---
save /- 1 string def[331 64 779242 46 396 46 871217102 46 14782 10]{dup
99 lt{- 0 3 -1 roll put -}{32 =string cvrs}ifelse print} forall restore

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