diff options
| -rw-r--r-- | TODO.norg | 8 | ||||
| -rw-r--r-- | justfile | 2 | ||||
| -rw-r--r-- | sketches/04/polka.frag | 37 |
3 files changed, 46 insertions, 1 deletions
@@ -1,5 +1,8 @@ * Week - - ( ) Mandelbrot | BQN + - (x) Mandelbrot | BQN + Glsl + - (x) Newton's fractals | Glsl + - ( ) Flow | Glsl + - ( ) {http://quil.info/sketches/local/04058d1f6e2628d8c71b4fd7c850b8937c0d12b8c48cfb2383b24fbdf41ae8c1} | Glsl * Ideas - Flow fields on image @@ -17,7 +20,10 @@ - HTML5 canvas - p5.js - Uiua + - {https://github.com/sleexyz/hylogen} + - Clojure {http://quil.info/} - Desmos + - Desmos 3D - Processing - webgl shaders - X11 (Xlib) @@ -4,6 +4,8 @@ sketch name *args: s1: (sketch "01" "glslViewer" "mandelbrot.frag") s1_bqn: (sketch "01" "live-server" "--port=3000" "--no-browser" ".") s2: (sketch "02" "glslViewer" "newton.frag") +s3: (sketch "03" "glslViewer" "flow.frag" "-testImage" "test.png") +s4: (sketch "04" "glslViewer" "polka.frag") # week1: diff --git a/sketches/04/polka.frag b/sketches/04/polka.frag new file mode 100644 index 0000000..1a93292 --- /dev/null +++ b/sketches/04/polka.frag @@ -0,0 +1,37 @@ +varying vec4 v_position; +uniform vec2 u_resolution; +uniform float u_time; + +#define MAX_ITERATIONS 100 +#define DOTS 32. + +void main() { + float time = u_time * 2.; + + float ratio = u_resolution.x / u_resolution.y; + vec2 pos = v_position.xy/vec2(1.0, ratio); + + gl_FragColor = vec4(0., 0., 0., 1.); + + float segment = 2.0 / (DOTS + 1.); + + for (float i = 0.; i < DOTS; i++) { + for (float j = 0.; j < DOTS; j++) { + int alt = int(mod(i + j, 2.)); + vec2 step = vec2(segment * (i + 1.0), segment * (j + 1.0)); + float radius = (sin(time - length(pos)) + 1.)*0.02; + if (alt == 0) { + radius = (0.04 - radius); + } + + if (length(pos - 1. + step) < radius) { + if (alt == 0) { + gl_FragColor = vec4(.17, .24, .31, 1.); + } else { + gl_FragColor = vec4(0.75, 0.22, 0.17, 1.); + } + } + } + } +} + |