diff options
Diffstat (limited to '_log/matrix-digital-rain.md')
| -rw-r--r-- | _log/matrix-digital-rain.md | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/_log/matrix-digital-rain.md b/_log/matrix-digital-rain.md index 2edc7e7..43944ae 100644 --- a/_log/matrix-digital-rain.md +++ b/_log/matrix-digital-rain.md @@ -6,7 +6,7 @@ project: true thumbnail: thumb_sm.png --- -The 2022 version worked but had some loose ends. Unicode support was +2022 version worked but had loose ends. Unicode support was incomplete--couldn't mix ASCII with Katakana; Phosphor decay was stored in a separate array when it should've been packed with RGB; Code was harder to read than it needed to be. @@ -18,11 +18,11 @@ than it needed to be. Moved phosphor decay into the 4th byte of the RGB union--should’ve done this in 2022; What was I thinking. -Keeping the RGB union despite portability concerns. All my systems are -little-endian and the code is cleaner this way. +Kept the RGB union. Portability not a concern. All my systems are little-endian +and the code is cleaner this way. -Fixed Unicode by introducing a charset array. UNICODE(min, max) packs Unicode -ranges into uint64: low four bytes for start, high four bytes for end. +Fixed Unicode by introducing a charset array. UNICODE(min, max) macro packs +Unicode ranges into uint64: low four bytes for start, high four bytes for end. insert_code() unpacks a random block and picks a character from it: ``` @@ -49,7 +49,7 @@ static inline void insert_code(matrix *mat, Full-width Katakana breaks column alignment. Stick to half-width (U+FF61-U+FF9F) range. Compile with -DNOKANA to disable Katakana altogether. -blend() for screen decay is still good: +blend() for screen decay is still good. Left it alone: ``` static inline void blend(matrix *mat, @@ -64,8 +64,6 @@ static inline void blend(matrix *mat, } ``` -Left it alone. - Optimized RNG--xorshift instead of rand(): ``` @@ -80,7 +78,7 @@ static inline uint32_t xor(void) } ``` -NOTE: Non-linear variations (xorshitr+) for more speed. +NOTE: Non-linear variants (xorshitr+) for more speed. Tossed license and automake cruft. Just `cc -O3 main.c -o matrix` now. Don't need the ceremony. |