Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.postscript > #1191 > unrolled thread

help hacking halftones

Back to article view | Back to comp.lang.postscript

Contents

  help hacking halftones luser- -droog <mijoryx@yahoo.com> - 2012-12-25 22:50 -0800
    Re: help hacking halftones Don Lancaster <don@tinaja.com> - 2012-12-28 08:22 -0700
      Re: help hacking halftones Ross Presser <rpresser@gmail.com> - 2012-12-28 07:56 -0800

#1191 — help hacking halftones

There have been two excellent postscript answers to http://codegolf.stackexchange.com/questions/9266/emulate-a-7-segment-display  "Emulate a 7-segment display"

And I wanted to try a different approach. I've pretty much given up on trying to golf this, but here's what I got.

Instead of passing in as a defined name, wouldn't it be "shorter" to just place it on the stack with -c "1101101" ?

So that led me to this mess:

      1 (1101101)
      2 0
      3 1 index
      4 {1 and 255 mul 3 copy put pop 1 add}forall
      5 pop
      6 dup
      7 dup
      8 3 5 8[.02 0 0 .05 0 0]{}image

It doesn't place pixels correctly, but does give you big blobs on the screen controlled by ascii-binary.

But then, I thought, the 7-segment display itself is a little grid controlled by a function. Could we abuse the spot function to active pixels (I mean, "cells", of course, super-zoomed) individually?

But I've been beating my head over how the halftones are supposed to work. I have no idea as yet how to begin abusing them. :(

[toc] | [next] | [standalone]

#1203

On 12/25/2012 11:50 PM, luser- -droog wrote:
> There have been two excellent postscript answers to http://codegolf.stackexchange.com/questions/9266/emulate-a-7-segment-display  "Emulate a 7-segment display"
>
> And I wanted to try a different approach. I've pretty much given up on trying to golf this, but here's what I got.
>
> Instead of passing in as a defined name, wouldn't it be "shorter" to just place it on the stack with -c "1101101" ?
>
> So that led me to this mess:
>
>        1 (1101101)
>        2 0
>        3 1 index
>        4 {1 and 255 mul 3 copy put pop 1 add}forall
>        5 pop
>        6 dup
>        7 dup
>        8 3 5 8[.02 0 0 .05 0 0]{}image
>
> It doesn't place pixels correctly, but does give you big blobs on the screen controlled by ascii-binary.
>
> But then, I thought, the 7-segment display itself is a little grid controlled by a function. Could we abuse the spot function to active pixels (I mean, "cells", of course, super-zoomed) individually?
>
> But I've been beating my head over how the halftones are supposed to work. I have no idea as yet how to begin abusing them. :(
>


The secret halftone maps appear at

< http://www.tinaja.com/glib/pssecrets.pdf >

-- 
Many thanks,

Don Lancaster                          voice phone: (928)428-4073
Synergetics   3860 West First Street   Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml   email: don@tinaja.com

Please visit my GURU's LAIR web site at http://www.tinaja.com

[toc] | [prev] | [next] | [standalone]

#1204

> Don Lancaster                          voice phone: (928)428-4073
> Synergetics   3860 West First Street   Box 809 Thatcher, AZ 85552
> rss: http://www.tinaja.com/whtnu.xml   email: don @ tinaja.com

The RSS hasn't been updated since 2010? Maybe you should rename it whtold.xml :)

[toc] | [prev] | [standalone]

Back to top | Article view | comp.lang.postscript

csiph-web