Matrix 1980s style.

1 files changed, 14 insertions, 25 deletions

diff --git a/_log/matrix-digital-rain.md b/_log/matrix-digital-rain.md
index d4ea301..4958eed 100644
--- a/_log/matrix-digital-rain.md
+++ b/_log/matrix-digital-rain.md
@@ -6,39 +6,28 @@ project: true
 thumbnail: thumb_sm.png
 ---
 
-Fixed the Unicode issue finally. Can now mix ASCII + Katakana.
-
-Took me 2 hours to decipher how this even works. For future me: mat.col[]
-stores shuffled column indices, mat.row[] tracks last updated row per column.
-shuffle() randomizes the working set, index i (line 333) and lines 364-370 draw
-one column at a time, swap() rotates columns in and out. That's the rain.
-
-Moved Phosphor decay level into the LSB of the RGB union - should've done this
-in 2022 instead of separate array. WTF was I thinking? 
-
-Keeping the RGB/PD union as it is. I know the 'portability' nerds hate it, but
-I’m on a little-endian machine, and I’m the only one reading this. It’s
-cleaner.
-
-New charset array works. UNICODE(min, max) macro packs the range into uint64.
-insert_code() picks random block, unpacks it, and picks random char. Elegant.
-
-Looks a lot like the original now:
+Unicode support added. ASCII + Katakana working:
 
 <video style="max-width:100%;" controls="" poster="poster.png">
   <source src="matrix.mp4" type="video/mp4">
 </video>
 
-Using half-width Katakana (U+FF61-U+FF9F) because full-width characters break
-columns.
+Algorithm notes: mat.col[] = shuffled column indices, mat.row[] = last row per
+column. shuffle() sets working set, main loop draws columns via index i (line
+333), swap() rotates set.
+
+Phosphor decay moved to LSB of RGB union. Should have done this originally.
+
+RGB/PD union stays. Little-endian machine, portability not a concern.
+
+Charset via UNICODE(min, max) macro - packs range into uint64, insert_code()
+unpacks and selects random char.
 
-blend() is still good, left it alone.
+Half-width Katakana (U+FF61-U+FF9F) for column alignment.
 
-Tossed the license and automake cruft. Just `cc -O3 main.c -o matrix`. Don't
-need the ceremony.
+Removed license, automake files. Build: cc -O3 main.c -o matrix
 
-Performance regressions: none. Runs like a charm on the T490. 2% CPU. No
-whirring fans.
+Performance: 2% CPU, OpenBSD, T490.
 
 Commit:
 [03f8d87](https://git.asciimx.com/matrix-digital-rain/commit/?id=03f8d87ba7c2e46bd3f3cc4c772fb3a2ac740c92)