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Justine Tunney
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c91b3c5006
14915 changed files with 590219 additions and 0 deletions
184
tool/viz/xterm256effective.c
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184
tool/viz/xterm256effective.c
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "dsp/tty/quant.h"
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#include "libc/bits/bits.h"
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#include "libc/bits/xchg.h"
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#include "libc/fmt/fmt.h"
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#include "libc/math.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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/* #define ROUND(x) x */
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/* #define RT int */
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/* #define R1 1 */
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/* #define R2 2 */
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/* #define R3 3 */
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#define RT float
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#define MUL(x, y) ((x) * (y))
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#define RND(x) roundf(x)
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#define R1 0.25f
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#define R2 0.50f
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#define R3 0.75f
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#define rgb_t struct TtyRgb
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forceinline RT lerp(RT x, RT y, RT d) {
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return x * (1.0 - d) + y * d;
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}
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forceinline int lerp255(RT x, RT y, RT d) {
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return lerp(x / 255.0, y / 255.0, d) * 255.0;
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}
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forceinline rgb_t rgblerp(rgb_t x, rgb_t y, RT d) {
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return (rgb_t){lerp255(x.r, y.r, d), lerp255(x.g, y.g, d),
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lerp255(x.b, y.b, d)};
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}
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forceinline rgb_t getquant(unsigned xt) {
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return g_ansi2rgb_[xt];
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}
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forceinline unsigned dist(int x, int y) {
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return x - y;
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}
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forceinline unsigned sqr(int x) {
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return x * x;
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}
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forceinline unsigned rgbdist(rgb_t x, rgb_t y) {
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return sqrt(sqr(dist(x.r, y.r)) + sqr(dist(x.g, y.g)) + sqr(dist(x.b, y.b)));
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}
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bool b;
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rgb_t rgb, cc, c1, c2;
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unsigned i, j, k, m, n, x, y;
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char buf[128];
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/* 0125 025 067-29 # '░' bg=0352 fg=0306 → ░░░ */
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/* 0125 025 067-29 # '▓' bg=0306 fg=0352 → ▓▓▓ */
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/* 0125 055 067-29 # '░' bg=0352 fg=0314 → ░░░ */
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int main(int argc, char *argv[]) {
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/* memcpy(g_ansi2rgb_, &kTangoPalette, sizeof(kTangoPalette)); */
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/* i = 21; */
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/* j = 22; */
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/* c1 = getquant(i); */
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/* c2 = getquant(j); */
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/* cc = rgblerp(c1, c2, R1); */
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/* printf("rgblerp((%3d,%3d,%3d), (%3d,%3d,%3d),4) → (%3d,%3d,%3d)\n", c1.r,
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*/
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/* c1.g, c1.b, c2.r, c2.g, c2.b, cc.r, cc.g, cc.b); */
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/* exit(0); */
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for (m = 16; m < 256; m += 6) {
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for (n = 16; n < 256; n += 6) {
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printf("------------------------------------------------------------\n");
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i = m;
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j = n;
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b = false;
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while (i < m + 6) {
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printf("\n");
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cc = getquant(i);
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sprintf(buf, "\e[48;5;%dm ", i);
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printf("0x%02x%02x%02x, %d,%d,0\t/* 0x%02x%02x%02x "
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" + ' ' bg=%3d → %s \e[0m */\n",
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cc.b, cc.g, cc.r, i, 0, getquant(i).r, getquant(i).g,
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getquant(i).b, i, buf);
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#if 0
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sprintf(buf, "\e[38;5;%dm███", i);
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printf("0x%08x 0x%02x%02x%02x\t"
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" '█' fg=%3d → %s\e[0m\n",
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cc.b, cc.g, cc.r, strlen(buf), i, buf);
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#endif
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for (x = i; x < i + 1; ++x) {
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for (y = j; y < j + 1; ++y) {
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for (k = 0; k < 2; ++k) {
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if (x > y /* && */
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/* rgbdist(getquant(x), getquant(y)) < 49744125 / 16 */ /* &&
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((32
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<= x && x <= 232) && (32 <= y && y <= 232))
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&& */
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/* (cc.r > 0137 && cc.g > 0137 && cc.b > 0137) */) {
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sprintf(buf, "\e[48;5;%d;38;5;%dm░░░", x, y);
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cc = rgblerp(getquant(x), getquant(y), R1);
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printf("0x%02x%02x%02x, %d,%d,1\t/* 0x%02x%02x%02x + "
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"0x%02x%02x%02x"
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" + '░' bg=%3d fg=%3d → "
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"\e[48;5;%dm \e[48;5;%dm "
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"%s\e[48;2;%d;%d;%dm \e[0m */\n",
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cc.b, cc.g, cc.r, x, y, getquant(x).r, getquant(x).g,
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getquant(x).b, getquant(y).r, getquant(y).g,
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getquant(y).b, x, y, x, y, buf, cc.r, cc.g, cc.b);
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sprintf(buf, "\e[48;5;%d;38;5;%dm▒▒▒", x, y);
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cc = rgblerp(getquant(x), getquant(y), R2);
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printf("0x%02x%02x%02x, %d,%d,2\t/* 0x%02x%02x%02x + "
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"0x%02x%02x%02x"
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" + '▒' bg=%3d fg=%3d → "
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"\e[48;5;%dm \e[48;5;%dm "
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"%s\e[48;2;%d;%d;%dm \e[0m */\n",
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cc.b, cc.g, cc.r, x, y, getquant(x).r, getquant(x).g,
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getquant(x).b, getquant(y).r, getquant(y).g,
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getquant(y).b, x, y, x, y, buf, cc.r, cc.g, cc.b);
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sprintf(buf, "\e[48;5;%d;38;5;%dm▓▓▓", x, y);
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cc = rgblerp(getquant(x), getquant(y), R3);
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printf("0x%02x%02x%02x, %d,%d,3\t/* 0x%02x%02x%02x + "
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"0x%02x%02x%02x"
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" + '▓' bg=%3d fg=%3d → "
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"\e[48;5;%dm \e[48;5;%dm "
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"%s\e[48;2;%d;%d;%dm \e[0m */\n",
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cc.b, cc.g, cc.r, x, y, getquant(x).r, getquant(x).g,
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getquant(x).b, getquant(y).r, getquant(y).g,
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getquant(y).b, x, y, x, y, buf, cc.r, cc.g, cc.b);
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}
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#if 0
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sprintf(buf, "\e[48;5;%d;38;5;%dm▓▓▓", x, y);
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cc = rgblerp((c1 = getquant(x)), (c2 = getquant(y)), R3);
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printf("0%03o%03o%03o\t# '▓' bg=%3d fg=%3d → "
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"%s\e[48;2;%d;%d;%dm \e[0m\n",
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cc.b, cc.g, cc.r, strlen(buf), x, y, buf,
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lerp255(c1.r, c2.r, R3), lerp255(c1.g, c2.g, R3),
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lerp255(c1.b, c2.b, R3));
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#endif
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xchg(&x, &y);
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}
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}
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}
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++i;
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++j;
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}
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}
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}
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/* for (i = 0; i < 255; ++i) { */
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/* for (j = 0; j < 255; ++j) { */
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/* for (k = 0; k < 255; ++k) { */
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/* printf("0%03o%03o%03o\n", i, j, k); */
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/* } */
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/* } */
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/* } */
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return 0;
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}
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