Landon Curt Noll
d414b6d71f
Improved `all-run.sh` and `readme2index.sh` so that certain command line options (e.g., -p, -P, -u, -U ...) are only passed along to other tools if they are given on the command line. all-run.sh VERSION changed from "1.1.1 2024-01-19" to "1.1.2 2024-01-20", readme2index.sh VERSION changed from "1.1 2024-01-16" to "1.1.1 2024-01-20". Added `quick-readme2index.sh` that only calls `readme2index.sh` if the `index.html` is not a non-empty file, or of either `.winner.json` and/or `README.md` is newer than `index.html`. Updated all `index.html` files because the the file contains a comment that includes the newly modified readme2index.sh VERSION.
To build:
make all
To use:
./horton A B C D
A, B, C and D are numeric arguments.
Try:
./try.sh
Alternate code:
This confuses cb greatly. See horton.alt.c for an unobfuscated/enhanced version.
Alternate build:
make alt
Alternate use:
./horton.alt A B C D
Where A, B, C and D are numbers like with horton.
Alternate try:
./try.alt.sh
Judges' remarks:
Try to figure out how this program prints, for a given slope, the right character. And for extra credit, try to figure out which character is at the bottom of this hint file. :-)
You might be interested in the author's article that they cite towards the end of their remarks, included as PDF files for your convenience, the full newsletter and a PDF file of just the pages cited.
Author's remarks:
Run it with any 4 numeric arguments, e.g. ./horton 3 2 1 0. Play with the
numbers to get a pleasing result, or use it for your high school algebra
class.
SPOILER:
As should be obvious from 20 feet away, the program is a cubic plotter. It plots against certain artists, splattering their cubes with graphs of their cubic equations. Those dastardly arguments are mere coefficients, cogs in the wheels of the grand plot to overthrow the cubics!
Oh, by the way, it uses a self-contained graphtab and frame buffer. It's easily modified to graph any 96x160 bitmap on a dumb terminal.
See the gtface program for another example. Try:
make gtface
./gtface < gtface.data
For more information, see my article
Using GraphTab; USENIX ;login: Sept/Oct 1992, pages 28-31.
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Copyright and CC BY-SA 4.0 License:
This file is Copyright (c) 2023 by Landon Curt Noll. All Rights Reserved. You are free to share and adapt this file under the terms of this license:
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
For more information, see: https://creativecommons.org/licenses/by-sa/4.0/