magic circles

1 files changed, 12 insertions, 0 deletions

diff --git a/sketches/06/strange.frag b/sketches/06/strange.frag
new file mode 100644
index 0000000..3abeb33
--- /dev/null
+++ b/sketches/06/strange.frag
@@ -0,0 +1,12 @@
+varying vec4 v_position;
+uniform vec2 u_resolution;
+uniform float u_time;
+
+void main() {
+  float ratio = u_resolution.x / u_resolution.y;
+  vec2 pos = v_position.xy/vec2(1.0, ratio);
+
+  float f = length(fract(pos * 10.0) - 0.5) * exp(-length(pos));
+  f = abs(sin(f*30. + u_time)/3.);
+  gl_FragColor = vec4(f*0.6, f*0.4, f*1.0, 1.0);
+}