Stacking coins in THREE.js. Click to stop and start the rotation.
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June 18, 2019 02:07
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Stacks On Stacks On Stacks
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| license: gpl-3.0 |
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| <html> | |
| <head> | |
| <style> | |
| body { | |
| margin: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="scene"></div> | |
| <script src="https://unpkg.com/[email protected]/build/three.min.js"></script> | |
| <script src="https://unpkg.com/[email protected]/build/geometric.min.js"></script> | |
| <script> | |
| const scene = new THREE.Scene(); | |
| const camera = (_ => { | |
| const camera = new THREE.PerspectiveCamera(35, innerWidth / innerHeight, 0.1, 1000); | |
| camera.position.set(0, 50, -100); | |
| camera.lookAt(0, 10, 0); | |
| return camera; | |
| })(); | |
| const renderer = (_ => { | |
| const renderer = new THREE.WebGLRenderer(); | |
| renderer.setClearColor("#eee"); | |
| renderer.setPixelRatio(devicePixelRatio); | |
| renderer.shadowMap.enabled = true; | |
| renderer.shadowMap.type = THREE.PCFSoftShadowMap; | |
| renderer.gammaOutput = true; | |
| renderer.gammaFactor = 2.2; | |
| document.getElementById("scene").appendChild(renderer.domElement); | |
| return renderer; | |
| })(); | |
| const plane = (_ => { | |
| const geo = new THREE.PlaneBufferGeometry(2000, 2000); | |
| const mat = new THREE.MeshPhongMaterial({ color: "#888" }); | |
| const plane = new THREE.Mesh(geo, mat); | |
| plane.position.set(0, 0, 0); | |
| plane.rotation.x = -.5 * Math.PI; | |
| scene.add(plane); | |
| plane.receiveShadow = true; | |
| return plane; | |
| })(); | |
| for (let i = 0; i < 25; i++){ | |
| drawCoin(i); | |
| } | |
| for (let i = 0; i < 10; i++){ | |
| drawCoin(i, innerWidth / 60, true); | |
| } | |
| for (let i = 0; i < 5; i++){ | |
| drawCoin(i, innerWidth / -60, true); | |
| } | |
| const ambient = (_ => { | |
| const light = new THREE.AmbientLight(0x000000, 0.1); | |
| scene.add(light); | |
| return light; | |
| })(); | |
| const spotBehind = (_ => { | |
| const light = new THREE.SpotLight("#fff", 0.3); | |
| light.position.set(-8, 50, 19); | |
| light.castShadow = true; | |
| light.shadow.mapSize.width = 1024; | |
| light.shadow.mapSize.height = 1024; | |
| scene.add(light); | |
| return light; | |
| })(); | |
| const spotLeft = (_ => { | |
| const light = new THREE.SpotLight("#fff", 1); | |
| light.position.set(50, 30, -40); | |
| light.castShadow = true; | |
| light.shadow.mapSize.width = 1024; | |
| light.shadow.mapSize.height = 1024; | |
| scene.add(light); | |
| return light; | |
| })(); | |
| const spotRight = (_ => { | |
| const light = new THREE.SpotLight("#fff", .8); | |
| light.position.set(-58, 5, -40); | |
| light.castShadow = true; | |
| light.shadow.mapSize.width = 1024; | |
| light.shadow.mapSize.height = 1024; | |
| scene.add(light); | |
| return light; | |
| })(); | |
| const spotOverhead = (_ => { | |
| const light = new THREE.SpotLight("#fff", 1); | |
| light.position.set(0, 800, 0); | |
| light.castShadow = true; | |
| light.shadow.mapSize.width = 1024; | |
| light.shadow.mapSize.height = 1024; | |
| scene.add(light); | |
| return light; | |
| })(); | |
| let clicked = false; | |
| document.addEventListener("click", _ => { | |
| clicked = !clicked; | |
| }); | |
| function animate(){ | |
| requestAnimationFrame(animate); | |
| if (!clicked){ | |
| scene.traverse((e) => { | |
| if (e instanceof THREE.Mesh && e != plane) { | |
| const origin = [0, 0]; | |
| [e.position.x, e.position.z] = geometric.pointRotate([e.position.x, e.position.z], 2, origin); | |
| } | |
| }); | |
| } | |
| camera.aspect = innerWidth / innerHeight; | |
| camera.updateProjectionMatrix(); | |
| renderer.setSize(innerWidth, innerHeight); | |
| renderer.render(scene, camera); | |
| } | |
| animate(); | |
| function drawCoin(i, x = 0, receiveShadow = false){ | |
| const geo = new THREE.CylinderBufferGeometry(5, 5, 1, 32); | |
| const mat = new THREE.MeshStandardMaterial({ | |
| color: "#ffe685", | |
| metalness: 1, | |
| roughness: .4 | |
| }); | |
| const cylinder = new THREE.Mesh(geo, mat); | |
| cylinder.position.x = x + Math.random(); | |
| cylinder.position.y = i; | |
| cylinder.castShadow = true; | |
| cylinder.receiveShadow = receiveShadow; | |
| scene.add(cylinder); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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