91 lines
3.4 KiB
HTML
91 lines
3.4 KiB
HTML
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<!DOCTYPE html>
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<html lang="en" >
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<head>
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<meta charset="UTF-8">
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<title>3D Synth Canyon Animation</title>
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">
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<link rel="stylesheet" href="./style.css">
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</head>
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<body>
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<script id="vertexShader" type="x-shader/x-vertex">
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attribute vec3 center;
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uniform float uTime;
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varying float vDisp;
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varying vec3 vCenter;
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varying vec2 vSceneYZ;
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#define PULSE_TIME 1.16
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void main() {
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vCenter = center;
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vDisp = max(
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max(0., 1.-pow(3.*abs(uv.y-fract(-uTime*PULSE_TIME)+0.5),0.5)),
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1.-pow(3.*abs(uv.y-fract(-uTime*PULSE_TIME)-0.5),0.5)
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);
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// FIXME - magic numbers in displacement calculation
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vec4 scenePosition = modelViewMatrix*vec4(position+vec3(0.,1.,0.)*2.5*vDisp,1.);
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vSceneYZ = scenePosition.yz;
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gl_Position = projectionMatrix*scenePosition;
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}
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</script>
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<script id="fragmentShader" type="x-shader/x-fragment">
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uniform float uResolutionScale;
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varying float vDisp;
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varying vec3 vCenter;
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varying vec2 vSceneYZ;
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#define PI 3.14159265359
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#define WIREFRAME_WIDTH 2.5
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// adapted from https://github.com/mrdoob/three.js/blob/dev/examples/webgl_materials_wireframe.html for wireframe effect
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float edgeFactorTri() {
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vec3 a3 = smoothstep(vec3(0.), fwidth(vCenter.xyz)*WIREFRAME_WIDTH/uResolutionScale, vCenter.xyz);
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return min(min(a3.x, a3.y), a3.z);
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}
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void main( void ) {
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if (edgeFactorTri() > 0.98) discard;
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vec3 color = mix(
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mix(
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mix(
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vec3(1.,0.,0.6), // magenta base
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vec3(1., 0.9, .0), min(1.9,vDisp) // yellow pulse
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),
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vec3(1.), max(0., (vSceneYZ.s-20.) / 120.) // lighter on top; FIXME - magic numbers with Y position
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),
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vec3(0.), max(0., min(1., (-vSceneYZ.t - 80.) / 80.)) // fade to black; FIXME - magic numbers with Z position
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);
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gl_FragColor = gl_FrontFacing ?
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vec4(color, 1.0) :
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vec4(color, 0.5);
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}
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</script>
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<div id="container"></div>
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<div id="info">Synth Canyon Animation - with <a href="https://threejs.org" target="_blank">three.js</a>
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</div>
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<div id="controls">
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<label for="resolution">resolution: </label>
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<select id="resolution" value="2">
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<option value="0.5">0.5x</option>
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<option value="1" selected>1x</option>
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<option value="2">2x</option>
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<option value="4">4x</option>
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<option value="8">8x</option>
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</select>
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<label for="hide-audio">hide audio: </label>
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<input id="hide-audio" type="checkbox"></input>
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<iframe class="audio-embed" width="350" height="83" scrolling="no" frameborder="no" allow="autoplay" src="https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/450662742&color=%23a575d0&auto_play=false&hide_related=false&show_comments=true&show_user=true&show_reposts=false&show_teaser=true"></iframe>
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</div>
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<script src='https://cdnjs.cloudflare.com/ajax/libs/three.js/110/three.min.js'></script>
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<script src='https://cdnjs.cloudflare.com/ajax/libs/stats.js/r16/Stats.min.js'></script>
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<script src='https://cdnjs.cloudflare.com/ajax/libs/simplex-noise/2.4.0/simplex-noise.min.js'></script>
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<script src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/168886/RenderPass.110.js'></script>
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<script src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/168886/EffectComposer.110.js'></script>
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<script src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/168886/UnrealBloomPass.110.js'></script><script src="./script.js"></script>
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</body>
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</html>
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