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[zsh] add colortest2 script

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This commit is contained in:
Dmytro Meleshko 2019-08-26 15:29:52 +03:00
parent 6b14d6c4be
commit f2d12e2ebe
4 changed files with 75 additions and 23 deletions
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7
zsh/bin/colortest
View file

@ -1,2 +1,7 @@
#!/bin/sh
exec awk -f "$(dirname "$0")/colortest.awk"
set -e
script_dir="$(dirname "$0")"
exec awk -f "${script_dir}/colortest.awk"

32
zsh/bin/colortest.awk
View file

@ -59,7 +59,7 @@ function test_true_color() {
print "24-bit true color test:"
colors_count = 360;
for (h = 0; h < colors_count; h++) {
hsv_to_rgb(h / colors_count, 1, 1, rgb);
hsv2rgb(h / colors_count, 1, 1, rgb);
for (i = 0; i < 3; i++) rgb[i] = int(rgb[i] * 255);
r = rgb[0];
g = rgb[1];
@ -70,9 +70,9 @@ function test_true_color() {
print "";
}
function hsv_to_rgb(h, s, v, rgb) {
function hsv2rgb(h, s, v, rgb) {
if (s == 0) {
rgb[0] = rgb[1] = rgb[2] = v;
r = g = b = v;
} else {
h *= 6;
i = int(h);
@ -80,31 +80,19 @@ function hsv_to_rgb(h, s, v, rgb) {
p = v * (1 - s);
q = v * (1 - s * f);
t = v * (1 - s * (1 - f));
if (i == 0) {
rgb[0] = v;
rgb[1] = t;
rgb[2] = p;
r = v; g = t; b = p;
} else if (i == 1) {
rgb[0] = q;
rgb[1] = v;
rgb[2] = p;
r = q; g = v; b = p;
} else if (i == 2) {
rgb[0] = p;
rgb[1] = v;
rgb[2] = t;
r = p; g = v; b = t;
} else if (i == 3) {
rgb[0] = p;
rgb[1] = q;
rgb[2] = v;
r = p; g = q; b = v;
} else if (i == 4) {
rgb[0] = t;
rgb[1] = p;
rgb[2] = v;
r = t; g = p; b = v;
} else if (i == 5) {
rgb[0] = v;
rgb[1] = p;
rgb[2] = q;
r = v; g = p; b = q;
}
}
rgb[0] = r; rgb[1] = g; rgb[2] = b;
}

9
zsh/bin/colortest2 Executable file
View file

@ -0,0 +1,9 @@
#!/bin/sh
set -e
script_dir="$(dirname "$0")"
cols="$(tput cols)"
lines="$(tput lines)"
exec awk -v WIDTH="$((cols/2))" -v HEIGHT="$lines" -f "${script_dir}/colortest2.awk"

50
zsh/bin/colortest2.awk Normal file
View file

@ -0,0 +1,50 @@
#!/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;
}