URL: http://glslsandbox.com/e#34211.1
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// Warped Hex // By: Brandon Fogerty // xdpixel.com #ifdef GL_ES precision mediump float; #endif #extension GL_OES_standard_derivatives : enable uniform float time; uniform vec2 mouse; uniform vec2 resolution; float hex( vec2 p ) { p.y += mod( floor(p.x), 2.0) * 0.5; p = abs( fract(p)- 0.5 ); bool t = abs( max(p.x*1.5 + p.y, p.y * 2.0) - 1.0 ) > 0.2; return float(t); } void main( void ) { vec2 uv = ( gl_FragCoord.xy / resolution.xy ) * 2.0 - 1.0; uv.x *= resolution.x / resolution.y; vec2 nuv; nuv.x = atan( uv.y, uv.x) - time * 0.1; nuv.x *= (3.0 / 3.141596); nuv.y = length( uv ) - time * 0.1; float t = hex( nuv * 2.0 ); vec3 fc0 = vec3( t * 2.0, t * 4.0, t * 8.0 ); fc0 *= length(uv) * 0.9; const float scale = 9.0; vec3 fc1 = vec3( t * scale, t * scale, t * scale ) * (length(uv * 0.2)); fc1 += vec3( 0.5, 1.8, 10.8 ); vec3 fc = mix( fc0, fc1, length(uv) ); gl_FragColor = vec4( fc, 1.0 ); } |