Best Image Slider JS

Image slider JS
Image slider JS

Image sliders are one of the most prominent contents of a website. There are many slider Jquery, slider bootstrap which give pleasing effect to a website. The best and most attractive way of showing images is to use a Jquery image slider or a carousel slider.

Image slider JS

Image slider JS

Today we are going to share the best image slider in the world. It is amazing and it is new. It has a new look and feel and new animations as well. This image slider JS is using Three.js to get this wonderful and unique kind of effect.

Image slider JS with examples

Here is the code and the result below:
HtML code for Slider:


<div id="three-container"></div>


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

<script src="//cdnjs.cloudflare.com/ajax/libs/three.js/r75/three.min.js" ></script>
<script src='//cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenMax.min.js'></script>
<script src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/175711/bas.js'></script>
<script src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/175711/OrbitControls-2'></script>

Here is the CSS code for the Slider:

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;
}

Here is the JS code for slider:

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://i.imgur.com/LQd4GgN.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://i.imgur.com/ocNpRII.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();
  });
}

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