26 lines
No EOL
1.4 KiB
Markdown
26 lines
No EOL
1.4 KiB
Markdown
# android-shaders
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GLSL shaders made in/for the [Shader Editor app](https://f-droid.org/en/packages/de.markusfisch.android.shadereditor/) on F-Droid ([source](https://github.com/markusfisch/ShaderEditor)).
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### binary_clock.glsl
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Displays hours, minutes and seconds in binary as rows of filled circles. The example below is showing the time `19:15:57`
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### binary_clock_square.glsl
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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.
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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`.
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Formula for converting a time to beats: `(hours * 3600 + minutes * 60 + seconds) / 86400 * 65536`
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And to convert back to hours, minutes and seconds:
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- `seconds = int((beats * 86400 / 65536) % 60)`
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- `minutes = int((beats * 86400 / 65536) / 60 % 60)`
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- `hours = int((beats * 86400 / 65536) / 3600)`
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### interactive_game_of_life.glsl
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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.
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