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<!DOCTYPE html> |
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<html> |
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<head> |
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<meta charset="utf-8"> |
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<title>Recursive Polygons in 3D with Continuous Snowflakes</title> |
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<script src="https://aframe.io/releases/1.2.0/aframe.min.js"></script> |
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<script src="https://unpkg.com/aframe-environment-component/dist/aframe-environment-component.min.js"></script> |
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<style> |
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#canvas { |
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height: 500px; |
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width: 800px; |
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} |
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</style> |
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</head> |
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<body> |
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<a-scene> |
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<a-entity environment="preset: forest"></a-entity> |
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<a-entity camera position="0 1.6 0" look-controls wasd-controls></a-entity> |
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<a-plane position="0 0 0" rotation="-90 0 0" width="100" height="100" color="#FFF"></a-plane> |
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</a-scene> |
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<script> |
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AFRAME.registerComponent('snowflake', { |
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schema: { |
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size: { type: 'number', default: 0.1 }, |
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meltTime: { type: 'number', default: 15000 } |
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}, |
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init: function() { |
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let size = this.data.size; |
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this.el.setAttribute('geometry', { |
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primitive: 'sphere', |
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radius: size |
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}); |
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this.el.setAttribute('material', { color: '#FFF' }); |
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this.resetPosition(); |
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this.startMeltingLoop(); |
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}, |
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startMeltingLoop: function() { |
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const resetAndStartAgain = () => { |
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this.resetPosition(); |
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setTimeout(resetAndStartAgain, Math.random() * this.data.meltTime + 15000); |
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}; |
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setTimeout(resetAndStartAgain, Math.random() * this.data.meltTime + 15000); |
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}, |
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resetPosition: function() { |
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this.el.object3D.position.set( |
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Math.random() * 20 - 10, |
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5 + Math.random() * 5, |
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Math.random() * 20 - 10 |
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); |
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this.velocity = new THREE.Vector3( |
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(Math.random() - 0.5) * 0.01, |
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-0.02, |
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(Math.random() - 0.5) * 0.01 |
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); |
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}, |
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tick: function() { |
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this.el.object3D.position.add(this.velocity); |
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if (this.el.object3D.position.y <= -3.5) { |
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this.el.object3D.position.y = -3.5; |
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this.velocity.set(0, 0, 0); |
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} |
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} |
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}); |
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function createSnowflakeCloud(x, y, z, numParticles) { |
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let cloud = document.createElement('a-entity'); |
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cloud.object3D.position.set(x, y, z); |
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for (let i = 0; i < numParticles; i++) { |
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let size = Math.random() * 0.1 + 0.05; |
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let meltTime = Math.random() * 20000 + 5000; |
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setTimeout(() => { |
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let snowflakeEl = document.createElement('a-entity'); |
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snowflakeEl.setAttribute('snowflake', {size: size, meltTime: meltTime}); |
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cloud.appendChild(snowflakeEl); |
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}, i * 100); |
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} |
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document.querySelector('a-scene').appendChild(cloud); |
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} |
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for (let x = -10; x <= 10; x += 10) { |
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for (let z = -10; z <= 10; z += 10) { |
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createSnowflakeCloud(x, 5, z, 50); |
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} |
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} |
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createSnowflakeCloud(0, 8, 0, 100); |
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</script> |
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</body> |
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</html> |
