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