Cody Boone Ferguson
419420aa1c
For 1993/ant it clarifies (even though the extension of the file probably would suggest it) that the man page is in text format. For 2020/endoh2 there were some mistakes introduced with the renaming of spoiler to other things. Rebuilt the .entry.json and the index.html files for both. Rebuilt 2020/endoh2/obfuscation/index.html.
41 lines
1.4 KiB
Markdown
41 lines
1.4 KiB
Markdown
# Opening crawl ROT13 decoder
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The program contains dedicated font data for all uppercase alphabet letters.
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The source code of the font is [glyphs.txt](glyphs.txt), which is a sequence of
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chunks that is a ASCII code (65-90) followed by points data: `x,y,ctrl`.
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If `ctrl` is 1, the point is used as control point for quadratic [bézier
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curve](https://en.wikipedia.org/wiki/Bézier_curve).
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[code.c](%%REPO_URL%%/2020/endoh2/obfuscation/code.c) is the main logic for the program, which has some placeholders
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for font data and something else.
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It decompresses the font data and renders a given text by projection. It
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exploits `C99`'s `double complex` type to represent 2D points, but carefully
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coded so that it does not require any `math.h` functions; you don't have to pass
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`-lm` to `cc`.
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[tmpl.txt](tmpl.txt) is a template for the program. [gen.rb](%%REPO_URL%%/2020/endoh2/obfuscation/gen.rb) composes
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the all items and generates [prog.c](%%REPO_URL%%/2020/endoh2/prog.c).
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<hr style="width:10%;text-align:left;margin-left:0">
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Jump to: [top](#)
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<!--
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Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
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You are free to share and adapt this file under the terms of this license:
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Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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For more information, see:
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https://creativecommons.org/licenses/by-sa/4.0/
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-->
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