Web-Mountain/Awesome Effects/3D Image Transition.html at main · AbdulDevHub/Web-Mountain · GitHub

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<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Three Image Transition</title>
    <style>
      body {
        margin: 0;
        overflow: hidden;
      }

      canvas {
        background-image: radial-gradient(#666, #333);
      }

      #instructions {
        position: absolute;
        color: #fff;
        bottom: 0;
        padding-bottom: 6px;
        font-family: sans-serif;
        width: 100%;
        text-align: center;
        pointer-events: none;
      }
    </style>

    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.19.0/TweenMax.min.js"></script>
    <script src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/175711/bas.js"></script>
  </head>
  <body>
    <div id="three-container"></div>

    <div id="instructions">click and drag to control the animation</div>

    <script>
      window.onload = init
      console.ward = function () {} // what warnings?

      function init() {
        var root = new THREERoot({
          createCameraControls: !true,
          antialias: window.devicePixelRatio === 1,
          fov: 80,
        })

        root.renderer.setClearColor(0x000000, 0)
        root.renderer.setPixelRatio(window.devicePixelRatio || 1)
        root.camera.position.set(0, 0, 60)

        var width = 100
        var height = 60

        var slide = new Slide(width, height, "out")
        var l1 = new THREE.ImageLoader()
        l1.setCrossOrigin("Anonymous")
        l1.load(
          "https://s3-us-west-2.amazonaws.com/s.cdpn.io/175711/winter.jpg",
          function (img) {
            slide.setImage(img)
          },
        )
        root.scene.add(slide)

        var slide2 = new Slide(width, height, "in")
        var l2 = new THREE.ImageLoader()
        l2.setCrossOrigin("Anonymous")
        l2.load(
          "https://s3-us-west-2.amazonaws.com/s.cdpn.io/175711/spring.jpg",
          function (img) {
            slide2.setImage(img)
          },
        )

        root.scene.add(slide2)

        var tl = new TimelineMax({ repeat: -1, repeatDelay: 1.0, yoyo: true })

        tl.add(slide.transition(), 0)
        tl.add(slide2.transition(), 0)

        createTweenScrubber(tl)

        window.addEventListener("keyup", function (e) {
          if (e.keyCode === 80) {
            tl.paused(!tl.paused())
          }
        })
      }

      ////////////////////
      // CLASSES
      ////////////////////

      function Slide(width, height, animationPhase) {
        var plane = new THREE.PlaneGeometry(
          width,
          height,
          width * 2,
          height * 2,
        )

        THREE.BAS.Utils.separateFaces(plane)

        var geometry = new SlideGeometry(plane)

        geometry.bufferUVs()

        var aAnimation = geometry.createAttribute("aAnimation", 2)
        var aStartPosition = geometry.createAttribute("aStartPosition", 3)
        var aControl0 = geometry.createAttribute("aControl0", 3)
        var aControl1 = geometry.createAttribute("aControl1", 3)
        var aEndPosition = geometry.createAttribute("aEndPosition", 3)

        var i, i2, i3, i4, v

        var minDuration = 0.8
        var maxDuration = 1.2
        var maxDelayX = 0.9
        var maxDelayY = 0.125
        var stretch = 0.11

        this.totalDuration = maxDuration + maxDelayX + maxDelayY + stretch

        var startPosition = new THREE.Vector3()
        var control0 = new THREE.Vector3()
        var control1 = new THREE.Vector3()
        var endPosition = new THREE.Vector3()

        var tempPoint = new THREE.Vector3()

        function getControlPoint0(centroid) {
          var signY = Math.sign(centroid.y)

          tempPoint.x = THREE.Math.randFloat(0.1, 0.3) * 50
          tempPoint.y = signY * THREE.Math.randFloat(0.1, 0.3) * 70
          tempPoint.z = THREE.Math.randFloatSpread(20)

          return tempPoint
        }

        function getControlPoint1(centroid) {
          var signY = Math.sign(centroid.y)

          tempPoint.x = THREE.Math.randFloat(0.3, 0.6) * 50
          tempPoint.y = -signY * THREE.Math.randFloat(0.3, 0.6) * 70
          tempPoint.z = THREE.Math.randFloatSpread(20)

          return tempPoint
        }

        for (
          i = 0, i2 = 0, i3 = 0, i4 = 0;
          i < geometry.faceCount;
          i++, i2 += 6, i3 += 9, i4 += 12
        ) {
          var face = plane.faces[i]
          var centroid = THREE.BAS.Utils.computeCentroid(plane, face)

          // animation
          var duration = THREE.Math.randFloat(minDuration, maxDuration)
          var delayX = THREE.Math.mapLinear(
            centroid.x,
            -width * 0.5,
            width * 0.5,
            0.0,
            maxDelayX,
          )
          var delayY

          if (animationPhase === "in") {
            delayY = THREE.Math.mapLinear(
              Math.abs(centroid.y),
              0,
              height * 0.5,
              0.0,
              maxDelayY,
            )
          } else {
            delayY = THREE.Math.mapLinear(
              Math.abs(centroid.y),
              0,
              height * 0.5,
              maxDelayY,
              0.0,
            )
          }

          for (v = 0; v < 6; v += 2) {
            aAnimation.array[i2 + v] =
              delayX + delayY + Math.random() * stretch * duration
            aAnimation.array[i2 + v + 1] = duration
          }

          // positions

          endPosition.copy(centroid)
          startPosition.copy(centroid)

          if (animationPhase === "in") {
            control0.copy(centroid).sub(getControlPoint0(centroid))
            control1.copy(centroid).sub(getControlPoint1(centroid))
          } else {
            // out
            control0.copy(centroid).add(getControlPoint0(centroid))
            control1.copy(centroid).add(getControlPoint1(centroid))
          }

          for (v = 0; v < 9; v += 3) {
            aStartPosition.array[i3 + v] = startPosition.x
            aStartPosition.array[i3 + v + 1] = startPosition.y
            aStartPosition.array[i3 + v + 2] = startPosition.z

            aControl0.array[i3 + v] = control0.x
            aControl0.array[i3 + v + 1] = control0.y
            aControl0.array[i3 + v + 2] = control0.z

            aControl1.array[i3 + v] = control1.x
            aControl1.array[i3 + v + 1] = control1.y
            aControl1.array[i3 + v + 2] = control1.z

            aEndPosition.array[i3 + v] = endPosition.x
            aEndPosition.array[i3 + v + 1] = endPosition.y
            aEndPosition.array[i3 + v + 2] = endPosition.z
          }
        }

        var material = new THREE.BAS.BasicAnimationMaterial(
          {
            shading: THREE.FlatShading,
            side: THREE.DoubleSide,
            uniforms: {
              uTime: { type: "f", value: 0 },
            },
            shaderFunctions: [
              THREE.BAS.ShaderChunk["cubic_bezier"],
              //THREE.BAS.ShaderChunk[(animationPhase === 'in' ? 'ease_out_cubic' : 'ease_in_cubic')],
              THREE.BAS.ShaderChunk["ease_in_out_cubic"],
              THREE.BAS.ShaderChunk["quaternion_rotation"],
            ],
            shaderParameters: [
              "uniform float uTime;",
              "attribute vec2 aAnimation;",
              "attribute vec3 aStartPosition;",
              "attribute vec3 aControl0;",
              "attribute vec3 aControl1;",
              "attribute vec3 aEndPosition;",
            ],
            shaderVertexInit: [
              "float tDelay = aAnimation.x;",
              "float tDuration = aAnimation.y;",
              "float tTime = clamp(uTime - tDelay, 0.0, tDuration);",
              "float tProgress = ease(tTime, 0.0, 1.0, tDuration);",
              //'float tProgress = tTime / tDuration;'
            ],
            shaderTransformPosition: [
              animationPhase === "in"
                ? "transformed *= tProgress;"
                : "transformed *= 1.0 - tProgress;",
              "transformed += cubicBezier(aStartPosition, aControl0, aControl1, aEndPosition, tProgress);",
            ],
          },
          {
            map: new THREE.Texture(),
          },
        )

        THREE.Mesh.call(this, geometry, material)

        this.frustumCulled = false
      }
      Slide.prototype = Object.create(THREE.Mesh.prototype)
      Slide.prototype.constructor = Slide
      Object.defineProperty(Slide.prototype, "time", {
        get: function () {
          return this.material.uniforms["uTime"].value
        },
        set: function (v) {
          this.material.uniforms["uTime"].value = v
        },
      })

      Slide.prototype.setImage = function (image) {
        this.material.uniforms.map.value.image = image
        this.material.uniforms.map.value.needsUpdate = true
      }

      Slide.prototype.transition = function () {
        return TweenMax.fromTo(
          this,
          3.0,
          { time: 0.0 },
          { time: this.totalDuration, ease: Power0.easeInOut },
        )
      }

      function SlideGeometry(model) {
        THREE.BAS.ModelBufferGeometry.call(this, model)
      }
      SlideGeometry.prototype = Object.create(
        THREE.BAS.ModelBufferGeometry.prototype,
      )
      SlideGeometry.prototype.constructor = SlideGeometry
      SlideGeometry.prototype.bufferPositions = function () {
        var positionBuffer = this.createAttribute("position", 3).array

        for (var i = 0; i < this.faceCount; i++) {
          var face = this.modelGeometry.faces[i]
          var centroid = THREE.BAS.Utils.computeCentroid(
            this.modelGeometry,
            face,
          )

          var a = this.modelGeometry.vertices[face.a]
          var b = this.modelGeometry.vertices[face.b]
          var c = this.modelGeometry.vertices[face.c]

          positionBuffer[face.a * 3] = a.x - centroid.x
          positionBuffer[face.a * 3 + 1] = a.y - centroid.y
          positionBuffer[face.a * 3 + 2] = a.z - centroid.z

          positionBuffer[face.b * 3] = b.x - centroid.x
          positionBuffer[face.b * 3 + 1] = b.y - centroid.y
          positionBuffer[face.b * 3 + 2] = b.z - centroid.z

          positionBuffer[face.c * 3] = c.x - centroid.x
          positionBuffer[face.c * 3 + 1] = c.y - centroid.y
          positionBuffer[face.c * 3 + 2] = c.z - centroid.z
        }
      }

      function THREERoot(params) {
        params = utils.extend(
          {
            fov: 60,
            zNear: 10,
            zFar: 100000,

            createCameraControls: true,
          },
          params,
        )

        this.renderer = new THREE.WebGLRenderer({
          antialias: params.antialias,
          alpha: true,
        })
        this.renderer.setPixelRatio(Math.min(2, window.devicePixelRatio || 1))
        document
          .getElementById("three-container")
          .appendChild(this.renderer.domElement)

        this.camera = new THREE.PerspectiveCamera(
          params.fov,
          window.innerWidth / window.innerHeight,
          params.zNear,
          params.zfar,
        )

        this.scene = new THREE.Scene()

        if (params.createCameraControls) {
          this.controls = new THREE.OrbitControls(
            this.camera,
            this.renderer.domElement,
          )
        }

        this.resize = this.resize.bind(this)
        this.tick = this.tick.bind(this)

        this.resize()
        this.tick()

        window.addEventListener("resize", this.resize, false)
      }
      THREERoot.prototype = {
        tick: function () {
          this.update()
          this.render()
          requestAnimationFrame(this.tick)
        },
        update: function () {
          this.controls && this.controls.update()
        },
        render: function () {
          this.renderer.render(this.scene, this.camera)
        },
        resize: function () {
          this.camera.aspect = window.innerWidth / window.innerHeight
          this.camera.updateProjectionMatrix()

          this.renderer.setSize(window.innerWidth, window.innerHeight)
        },
      }

      ////////////////////
      // UTILS
      ////////////////////

      var utils = {
        extend: function (dst, src) {
          for (var key in src) {
            dst[key] = src[key]
          }

          return dst
        },
        randSign: function () {
          return Math.random() > 0.5 ? 1 : -1
        },
        ease: function (ease, t, b, c, d) {
          return b + ease.getRatio(t / d) * c
        },
        fibSpherePoint: (function () {
          var vec = { x: 0, y: 0, z: 0 }
          var G = Math.PI * (3 - Math.sqrt(5))

          return function (i, n, radius) {
            var step = 2.0 / n
            var r, phi

            vec.y = i * step - 1 + step * 0.5
            r = Math.sqrt(1 - vec.y * vec.y)
            phi = i * G
            vec.x = Math.cos(phi) * r
            vec.z = Math.sin(phi) * r

            radius = radius || 1

            vec.x *= radius
            vec.y *= radius
            vec.z *= radius

            return vec
          }
        })(),
        spherePoint: (function () {
          return function (u, v) {
            u === undefined && (u = Math.random())
            v === undefined && (v = Math.random())

            var theta = 2 * Math.PI * u
            var phi = Math.acos(2 * v - 1)

            var vec = {}
            vec.x = Math.sin(phi) * Math.cos(theta)
            vec.y = Math.sin(phi) * Math.sin(theta)
            vec.z = Math.cos(phi)

            return vec
          }
        })(),
      }

      function createTweenScrubber(tween, seekSpeed) {
        seekSpeed = seekSpeed || 0.001

        function stop() {
          TweenMax.to(tween, 1, { timeScale: 0 })
        }

        function resume() {
          TweenMax.to(tween, 1, { timeScale: 1 })
        }

        function seek(dx) {
          var progress = tween.progress()
          var p = THREE.Math.clamp(progress + dx * seekSpeed, 0, 1)

          tween.progress(p)
        }

        var _cx = 0

        // desktop
        var mouseDown = false
        document.body.style.cursor = "pointer"

        window.addEventListener("mousedown", function (e) {
          mouseDown = true
          document.body.style.cursor = "ew-resize"
          _cx = e.clientX
          stop()
        })
        window.addEventListener("mouseup", function (e) {
          mouseDown = false
          document.body.style.cursor = "pointer"
          resume()
        })
        window.addEventListener("mousemove", function (e) {
          if (mouseDown === true) {
            var cx = e.clientX
            var dx = cx - _cx
            _cx = cx

            seek(dx)
          }
        })
        // mobile
        window.addEventListener("touchstart", function (e) {
          _cx = e.touches[0].clientX
          stop()
          e.preventDefault()
        })
        window.addEventListener("touchend", function (e) {
          resume()
          e.preventDefault()
        })
        window.addEventListener("touchmove", function (e) {
          var cx = e.touches[0].clientX
          var dx = cx - _cx
          _cx = cx

          seek(dx)
          e.preventDefault()
        })
      }
    </script>
  </body>
</html>