homepage css

2 files changed, 215 insertions, 1 deletions

diff --git a/site/assets/js/app/face.js b/site/assets/js/app/face.js
new file mode 100644
index 00000000..e8bcd313
--- /dev/null
+++ b/site/assets/js/app/face.js
@@ -0,0 +1,213 @@
+var face = (function(){
+  var container = document.querySelector("#face_container")
+  var camera, controls, scene, renderer
+  var mouse = new THREE.Vector2(0.5, 0.5)
+  var mouseTarget = new THREE.Vector2(0.5, 0.5)
+  var POINT_SCALE = 1.8
+  var FACE_POINT_COUNT = 68
+  var SWAP_TIME = 500
+  var cubes = [], meshes = []
+  var currentFace = document.querySelector('.currentFace')
+  var faceBuffer = (function () {
+    var a = new Array(FACE_POINT_COUNT)
+    for (let i = 0; i < FACE_POINT_COUNT; i++) {
+      a[i] = new THREE.Vector3()
+    }
+    return a
+  })()
+  var last_t = 0, start_t = 0
+  var colors = [
+    0xff3333,
+    0xff8833,
+    0xffff33,
+    0x338833,
+    0x3388ff,
+    0x3333ff,
+    0x8833ff,
+    0xff3388,
+    0xffffff,
+  ]
+  var swapping = false, swap_count = 0, swapFrom, swapTo, face_names, faces
+  init()
+
+  function init() {
+    fetch("/assets/data/3dlm_0_10.json")
+    .then(req => req.json())
+    .then(data => {
+      face_names = Object.keys(data)
+      faces = face_names.map(name => recenter(data[name]))
+      setup()
+      build(faces[0])
+      updateFace(faces[0])
+      setCurrentFace(face_names[0])
+      swapTo = faces[0]
+      animate()
+    })
+  }
+  function setup() {
+    var w = window.innerWidth / 2
+    var h = Math.min(window.innerWidth / 2, window.innerHeight * 0.7)
+    camera = new THREE.PerspectiveCamera(70, w/h, 1, 10000)
+    camera.position.x = 0
+    camera.position.y = 0
+    camera.position.z = 250
+
+    scene = new THREE.Scene()
+    scene.background = new THREE.Color(0x191919)
+
+    renderer = new THREE.WebGLRenderer({ antialias: true })
+    renderer.setPixelRatio(window.devicePixelRatio)
+    renderer.setSize(w, h)
+    container.appendChild(renderer.domElement)
+    document.body.addEventListener('mousemove', onMouseMove)
+    // renderer.domElement.addEventListener('mousedown', swap)
+    setInterval(swap, 5000)
+  }
+  function build(points) {
+    var matrix = new THREE.Matrix4()
+    var quaternion = new THREE.Quaternion()
+
+    for (var i = 0; i < FACE_POINT_COUNT; i++) {
+      var p = points[i]
+      var geometry = new THREE.BoxBufferGeometry()
+      var position = new THREE.Vector3(p[0], p[1], p[2])
+      var rotation = new THREE.Euler()
+      var scale = new THREE.Vector3()
+      var color = new THREE.Color()
+      scale.x = scale.y = scale.z = POINT_SCALE
+      quaternion.setFromEuler(rotation, false)
+      matrix.compose(position, quaternion, scale)
+      geometry.applyMatrix(matrix)
+      material = new THREE.MeshBasicMaterial({ color: color.setHex(0xffffff) })
+      cube = new THREE.Mesh(geometry, material)
+      scene.add(cube)
+      cubes.push(cube)
+    }
+
+    meshes = getLineGeometry(points).map((geometry, i) => {
+      var color = new THREE.Color()
+      var material = new MeshLineMaterial({
+        color: color.setHex(colors[i % colors.length]),
+      })
+      var line = new MeshLine()
+      line.setGeometry(geometry, _ => 1.5)
+      var mesh = new THREE.Mesh(line.geometry, material)
+      mesh.geometry.dynamic = true
+      scene.add(mesh)
+      return [line, mesh]
+    })
+  }
+  function lerpPoints(n, A, B, C) {
+    for (let i = 0, len = A.length; i < len; i++) {
+      lerpPoint(n, A[i], B[i], C[i])
+    }
+  }
+  function lerpPoint(n, A, B, C) {
+    C.x = lerp(n, A.x, B.x)
+    C.y = lerp(n, A.y, B.y)
+    C.z = lerp(n, A.z, B.z)
+  }
+  function lerp(n, a, b) {
+    return (b-a) * n + a
+  }
+  function swap(){
+    if (swapping) return
+    start_t = last_t
+    swapping = true
+    swap_count = (swap_count + 1) % faces.length
+    swapFrom = swapTo
+    swapTo = faces[swap_count]
+    setCurrentFace(face_names[swap_count])
+  }
+  function setCurrentFace(name) {
+    name = name.replace('.png', '').split('_').filter(s => !s.match(/\d+/)).join(' ')
+    currentFace.innerHTML = name
+  }
+  function update_swap(t){
+    var n = (t - start_t) / SWAP_TIME
+    if (n > 1) {
+      swapping = false
+      n = 1
+    }
+    lerpPoints(n, swapFrom, swapTo, faceBuffer)
+    updateFace(faceBuffer)
+  }
+  function updateFace(points) {
+    updateCubeGeometry(points)
+    updateLineGeometry(points)
+  }
+  function updateCubeGeometry(points) {
+    cubes.forEach((cube, i) => {
+      const p = points[i]
+      cube.position.set(p.x, p.y, p.z)
+    })
+  }
+  function updateLineGeometry(points) {
+    getLineGeometry(points).map((geometry, i) => {
+      var [line, mesh] = meshes[i]
+      line.setGeometry(geometry, _ => 1.5)
+      mesh.geometry.vertices = line.geometry.vertices
+      mesh.geometry.verticesNeedUpdate = true
+    })
+  }
+  function getLineGeometry(points) {
+    return [
+      points.slice(0, 17),
+      points.slice(17, 22),
+      points.slice(22, 27),
+      points.slice(27, 31),
+      points.slice(31, 36),
+      points.slice(36, 42),
+      points.slice(42, 48),
+      points.slice(48)
+    ].map((a, i) => {
+      var geometry = new THREE.Geometry()
+      a.forEach(p => geometry.vertices.push(p))
+      if (i > 4) {
+        geometry.vertices.push(a[0])
+      }
+      return geometry
+    })
+  }
+  function getBounds(obj) {
+    return obj.reduce((a, p) => {
+      return [
+        Math.min(a[0], p[0]),
+        Math.max(a[1], p[0]),
+        Math.min(a[2], p[1]),
+        Math.max(a[3], p[1]),
+        Math.min(a[4], p[2]),
+        Math.max(a[5], p[2]),
+      ]
+    }, [Infinity, -Infinity, Infinity, -Infinity, Infinity, -Infinity])
+  }
+  function recenter(obj) {
+    const bounds = getBounds(obj)
+    const x_width = (bounds[1] - bounds[0]) / 2
+    const y_width = (bounds[3] - bounds[2]) / -3
+    const z_width = (bounds[5] - bounds[4]) / 2
+    return obj.map(p => {
+      p[0] = p[0] - bounds[0] - x_width
+      p[1] = -p[1] + bounds[1] + y_width
+      p[2] = p[2] - bounds[2] + z_width
+      return new THREE.Vector3(p[0], p[1], p[2])
+    })
+  }
+  //
+  function onMouseMove(e) {
+    mouse.x = e.clientX / window.innerWidth
+    mouse.y = e.clientY / window.innerHeight
+  }
+  function animate(t) {
+    requestAnimationFrame(animate)
+    if (swapping) update_swap(t)
+    renderer.render(scene, camera)
+    scene.rotation.y += 0.01 * Math.PI
+    mouseTarget.x += (mouse.x - mouseTarget.x) * 0.1
+    mouseTarget.y += (mouse.y - mouseTarget.y) * 0.1
+    scene.rotation.x = (mouseTarget.y - 0.5) * Math.PI / 2
+    // scene.rotation.y = (mouseTarget.x - 0.5) * Math.PI
+    scene.rotation.y += 0.01
+    last_t = t
+  }
+})()
diff --git a/site/assets/js/app/site.js b/site/assets/js/app/site.js
index 12bee3ec..eb6886c2 100644
--- a/site/assets/js/app/site.js
+++ b/site/assets/js/app/site.js
@@ -7,7 +7,8 @@ const isDesktop = !isMobile
 const htmlClassList = document.body.parentNode.classList
 htmlClassList.add(isDesktop ? 'desktop' : 'mobile')
 
-function toArray(A) { return Array.prototype.slice.apply(A) }
+function toArray(a) { return Array.prototype.slice.apply(a) }
+function choice(a) { return a[Math.floor(Math.random()*a.length)]}
 
 var site = (function(){
   var site = {}