add square binary clock

This commit is contained in:
Crispy 2024-05-28 21:06:48 +02:00
parent b590469790
commit ac6a0bda83
3 changed files with 46 additions and 1 deletions

View file

@ -6,7 +6,21 @@ Displays hours, minutes and seconds in binary as rows of filled circles. The exa
![](demo/binary_clock.png)
### interactive_game_of_life
### binary_clock_square.glsl
Divides the day into 65536 beats, roughly 1.3 seconds each, and displays the time in a 4x4 grid as binary. The least significant bit is to the bottom right, increasing left first then up.
The example below is showing the time `1101 1110 0011 1001` or `DE39`in hexadecimal (one digit per row of dots), which is equivalent to about `20:50:00`.
![](demo/binary_clock_square.png)
Formula for converting a time to beats: `(hours * 3600 + minutes * 60 + seconds) / 86400 * 65536`
And to convert back to hours, minutes and seconds:
- `seconds = int((beats * 86400 / 65536) % 60)`
- `minutes = int((beats * 86400 / 65536) / 60 % 60)`
- `hours = int((beats * 86400 / 65536) / 3600)`
### interactive_game_of_life.glsl
A rainbow-coloured simulation of [Conway's Game of Life](https://conwaylife.com/wiki/Conway%27s_Game_of_Life). The edges of the screen are randomised so that the pattern never stabilises. Pressing on the screen will turn on cells in a small radius.
![](demo/game_of_life.png)

31
binary_clock_square.glsl Normal file
View file

@ -0,0 +1,31 @@
#version 300 es
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
uniform vec2 resolution;
uniform vec4 date;
out vec3 col;
void main() {
vec2 uv = gl_FragCoord.xy / resolution.x;
uv.x = 1.0 - uv.x;
uv.y -= (resolution.y / resolution.x) * 0.5 - 0.5;
int x = int(uv.x * 4.0);
int y = int(uv.y * 4.0 + 1.0) - 1;
col = vec3(0.1, 0.1, 0.1);
if (y < 4 && y >= 0) {
vec2 c = vec2(x, y) / 4.0 + 0.125;
float r = length(c - uv);
float seconds = date.w;
int time = int(seconds / (3600.0 * 24.0) * 65536.0);
int bit = y * 4 + x;
bool state = ((time >> bit) & 1) == 1;
if (r < 0.05 && (r > 0.04 || state))
col = vec3(0.1, 1, 1);
}
}

Binary file not shown.

After

Width:  |  Height:  |  Size: 9.8 KiB