dotfiles/scripts/colortest2.awk
2019-08-30 13:13:04 +03:00

50 lines
1 KiB
Awk

#!/usr/bin/awk -f
BEGIN {
pi = atan2(0, -1);
test_true_color();
}
function test_true_color() {
for (y = 0; y < HEIGHT; y++) {
for (x = 0; x < WIDTH; x++) {
angle = pi - atan2(x + 0.5 - WIDTH/2, y + 0.5 - HEIGHT/2);
hsv2rgb(angle / (2*pi), 1, 1, rgb);
for (i = 0; i < 3; i++) rgb[i] = int(rgb[i] * 255);
r = rgb[0];
g = rgb[1];
b = rgb[2];
printf "\033[48;2;%d;%d;%dm", r,g,b;
printf " \033[0m";
}
print "";
}
}
function hsv2rgb(h, s, v, rgb) {
if (s == 0) {
r = g = b = v;
} else {
h *= 6;
i = int(h);
f = h - i;
p = v * (1 - s);
q = v * (1 - s * f);
t = v * (1 - s * (1 - f));
if (i == 0) {
r = v; g = t; b = p;
} else if (i == 1) {
r = q; g = v; b = p;
} else if (i == 2) {
r = p; g = v; b = t;
} else if (i == 3) {
r = p; g = q; b = v;
} else if (i == 4) {
r = t; g = p; b = v;
} else if (i == 5) {
r = v; g = p; b = q;
}
}
rgb[0] = r; rgb[1] = g; rgb[2] = b;
}