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HTML

              
                <script language="JavaScript">

  
</script>
              
            
!

CSS

              
                canvas {
  position:fixed;
  top:0;
  left:0;
}
              
            
!

JS

              
                /*
  Look below the OrbitControls to see the code! It's quite simple.
  (After the big block)
  
*/

/** * @author qiao / https: * @author mrdoob / http: * @author alteredq / http: * @author WestLangley / http: * @author erich666 / http: */ THREE.OrbitControls = function ( object, domElement ){this.object = object;this.domElement = ( domElement !== undefined ) ? domElement : document;this.enabled = true;this.target = new THREE.Vector3();this.minDistance = 0;this.maxDistance = Infinity;this.minZoom = 0;this.maxZoom = Infinity;this.minPolarAngle = 0;this.maxPolarAngle = Math.PI;this.minAzimuthAngle = - Infinity;this.maxAzimuthAngle = Infinity;this.enableDamping = false;this.dampingFactor = 0.25;this.enableZoom = true;this.zoomSpeed = 1.0;this.enableRotate = true;this.rotateSpeed = 1.0;this.enablePan = true;this.keyPanSpeed = 7.0;this.autoRotate = false;this.autoRotateSpeed = 2.0;this.enableKeys = true;this.keys ={LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };this.mouseButtons ={ORBIT: THREE.MOUSE.LEFT, ZOOM: THREE.MOUSE.MIDDLE, PAN: THREE.MOUSE.RIGHT };this.target0 = this.target.clone();this.position0 = this.object.position.clone();this.zoom0 = this.object.zoom;this.getPolarAngle = function (){return spherical.phi;};this.getAzimuthalAngle = function (){return spherical.theta;};this.saveState = function (){scope.target0.copy( scope.target );scope.position0.copy( scope.object.position );scope.zoom0 = scope.object.zoom;};this.reset = function (){scope.target.copy( scope.target0 );scope.object.position.copy( scope.position0 );scope.object.zoom = scope.zoom0;scope.object.updateProjectionMatrix();scope.dispatchEvent( changeEvent );scope.update();state = STATE.NONE;};this.update = function (){var offset = new THREE.Vector3();var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) );var quatInverse = quat.clone().inverse();var lastPosition = new THREE.Vector3();var lastQuaternion = new THREE.Quaternion();return function update(){var position = scope.object.position;offset.copy( position ).sub( scope.target );offset.applyQuaternion( quat );spherical.setFromVector3( offset );if ( scope.autoRotate && state===STATE.NONE ){rotateLeft( getAutoRotationAngle() );}spherical.theta += sphericalDelta.theta;spherical.phi += sphericalDelta.phi;spherical.theta = Math.max( scope.minAzimuthAngle, Math.min( scope.maxAzimuthAngle, spherical.theta ) );spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );spherical.makeSafe();spherical.radius *= scale;spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );scope.target.add( panOffset );offset.setFromSpherical( spherical );offset.applyQuaternion( quatInverse );position.copy( scope.target ).add( offset );scope.object.lookAt( scope.target );if ( scope.enableDamping===true ){sphericalDelta.theta *= ( 1 - scope.dampingFactor );sphericalDelta.phi *= ( 1 - scope.dampingFactor );}else{sphericalDelta.set( 0, 0, 0 );}scale = 1;panOffset.set( 0, 0, 0 );if ( zoomChanged || lastPosition.distanceToSquared( scope.object.position ) > EPS || 8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ){scope.dispatchEvent( changeEvent );lastPosition.copy( scope.object.position );lastQuaternion.copy( scope.object.quaternion );zoomChanged = false;return true;}return false;};}();this.dispose = function (){scope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );scope.domElement.removeEventListener( 'mousedown', onMouseDown, false );scope.domElement.removeEventListener( 'wheel', onMouseWheel, false );scope.domElement.removeEventListener( 'touchstart', onTouchStart, false );scope.domElement.removeEventListener( 'touchend', onTouchEnd, false );scope.domElement.removeEventListener( 'touchmove', onTouchMove, false );document.removeEventListener( 'mousemove', onMouseMove, false );document.removeEventListener( 'mouseup', onMouseUp, false );window.removeEventListener( 'keydown', onKeyDown, false );};var scope = this;var changeEvent ={type: 'change' };var startEvent ={type: 'start' };var endEvent ={type: 'end' };var STATE ={NONE: - 1, ROTATE: 0, DOLLY: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_DOLLY: 4, TOUCH_PAN: 5 };var state = STATE.NONE;var EPS = 0.000001;var spherical = new THREE.Spherical();var sphericalDelta = new THREE.Spherical();var scale = 1;var panOffset = new THREE.Vector3();var zoomChanged = false;var rotateStart = new THREE.Vector2();var rotateEnd = new THREE.Vector2();var rotateDelta = new THREE.Vector2();var panStart = new THREE.Vector2();var panEnd = new THREE.Vector2();var panDelta = new THREE.Vector2();var dollyStart = new THREE.Vector2();var dollyEnd = new THREE.Vector2();var dollyDelta = new THREE.Vector2();function getAutoRotationAngle(){return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;}function getZoomScale(){return Math.pow( 0.95, scope.zoomSpeed );}function rotateLeft( angle ){sphericalDelta.theta -= angle;}function rotateUp( angle ){sphericalDelta.phi -= angle;}var panLeft = function (){var v = new THREE.Vector3();return function panLeft( distance, objectMatrix ){v.setFromMatrixColumn( objectMatrix, 0 );v.multiplyScalar( - distance );panOffset.add( v );};}();var panUp = function (){var v = new THREE.Vector3();return function panUp( distance, objectMatrix ){v.setFromMatrixColumn( objectMatrix, 1 );v.multiplyScalar( distance );panOffset.add( v );};}();var pan = function (){var offset = new THREE.Vector3();return function pan( deltaX, deltaY ){var element = scope.domElement===document ? scope.domElement.body : scope.domElement;if ( scope.object instanceof THREE.PerspectiveCamera ){var position = scope.object.position;offset.copy( position ).sub( scope.target );var targetDistance = offset.length();targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );}else if ( scope.object instanceof THREE.OrthographicCamera ){panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );}else{console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );scope.enablePan = false;}};}();function dollyIn( dollyScale ){if ( scope.object instanceof THREE.PerspectiveCamera ){scale /= dollyScale;}else if ( scope.object instanceof THREE.OrthographicCamera ){scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );scope.object.updateProjectionMatrix();zoomChanged = true;}else{console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );scope.enableZoom = false;}} function dollyOut( dollyScale ){if ( scope.object instanceof THREE.PerspectiveCamera ){scale *= dollyScale;}else if ( scope.object instanceof THREE.OrthographicCamera ){scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );scope.object.updateProjectionMatrix();zoomChanged = true;}else{console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );scope.enableZoom = false;}} function handleMouseDownRotate( event ){rotateStart.set( event.clientX, event.clientY );}function handleMouseDownDolly( event ){dollyStart.set( event.clientX, event.clientY );}function handleMouseDownPan( event ){panStart.set( event.clientX, event.clientY );}function handleMouseMoveRotate( event ){rotateEnd.set( event.clientX, event.clientY );rotateDelta.subVectors( rotateEnd, rotateStart );var element = scope.domElement===document ? scope.domElement.body : scope.domElement;rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );rotateStart.copy( rotateEnd );scope.update();}function handleMouseMoveDolly( event ){dollyEnd.set( event.clientX, event.clientY );dollyDelta.subVectors( dollyEnd, dollyStart );if ( dollyDelta.y > 0 ){dollyIn( getZoomScale() );}else if ( dollyDelta.y < 0 ){dollyOut( getZoomScale() );}dollyStart.copy( dollyEnd );scope.update();}function handleMouseMovePan( event ){panEnd.set( event.clientX, event.clientY );panDelta.subVectors( panEnd, panStart );pan( panDelta.x, panDelta.y );panStart.copy( panEnd );scope.update();}function handleMouseUp( event ) {}function handleMouseWheel( event ){if ( event.deltaY < 0 ){dollyOut( getZoomScale() );}else if ( event.deltaY > 0 ){dollyIn( getZoomScale() );}scope.update();}function handleKeyDown( event ){switch ( event.keyCode ){case scope.keys.UP: pan( 0, scope.keyPanSpeed );scope.update();break;case scope.keys.BOTTOM: pan( 0, - scope.keyPanSpeed );scope.update();break;case scope.keys.LEFT: pan( scope.keyPanSpeed, 0 );scope.update();break;case scope.keys.RIGHT: pan( - scope.keyPanSpeed, 0 );scope.update();break;}} function handleTouchStartRotate( event ){rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );}function handleTouchStartDolly( event ){var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;var distance = Math.sqrt( dx * dx + dy * dy );dollyStart.set( 0, distance );}function handleTouchStartPan( event ){panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );}function handleTouchMoveRotate( event ){rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );rotateDelta.subVectors( rotateEnd, rotateStart );var element = scope.domElement===document ? scope.domElement.body : scope.domElement;rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );rotateStart.copy( rotateEnd );scope.update();}function handleTouchMoveDolly( event ){var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;var distance = Math.sqrt( dx * dx + dy * dy );dollyEnd.set( 0, distance );dollyDelta.subVectors( dollyEnd, dollyStart );if ( dollyDelta.y > 0 ){dollyOut( getZoomScale() );}else if ( dollyDelta.y < 0 ){dollyIn( getZoomScale() );}dollyStart.copy( dollyEnd );scope.update();}function handleTouchMovePan( event ){panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );panDelta.subVectors( panEnd, panStart );pan( panDelta.x, panDelta.y );panStart.copy( panEnd );scope.update();}function handleTouchEnd( event ) {}function onMouseDown( event ){if ( scope.enabled===false ) return;event.preventDefault();switch ( event.button ){case scope.mouseButtons.ORBIT: if ( scope.enableRotate===false ) return;handleMouseDownRotate( event );state = STATE.ROTATE;break;case scope.mouseButtons.ZOOM: if ( scope.enableZoom===false ) return;handleMouseDownDolly( event );state = STATE.DOLLY;break;case scope.mouseButtons.PAN: if ( scope.enablePan===false ) return;handleMouseDownPan( event );state = STATE.PAN;break;}if ( state !== STATE.NONE ){document.addEventListener( 'mousemove', onMouseMove, false );document.addEventListener( 'mouseup', onMouseUp, false );scope.dispatchEvent( startEvent );}} function onMouseMove( event ){if ( scope.enabled===false ) return;event.preventDefault();switch ( state ){case STATE.ROTATE: if ( scope.enableRotate===false ) return;handleMouseMoveRotate( event );break;case STATE.DOLLY: if ( scope.enableZoom===false ) return;handleMouseMoveDolly( event );break;case STATE.PAN: if ( scope.enablePan===false ) return;handleMouseMovePan( event );break;}} function onMouseUp( event ){if ( scope.enabled===false ) return;handleMouseUp( event );document.removeEventListener( 'mousemove', onMouseMove, false );document.removeEventListener( 'mouseup', onMouseUp, false );scope.dispatchEvent( endEvent );state = STATE.NONE;}function onMouseWheel( event ){if ( scope.enabled===false || scope.enableZoom===false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;event.preventDefault();event.stopPropagation();handleMouseWheel( event );scope.dispatchEvent( startEvent );scope.dispatchEvent( endEvent );}function onKeyDown( event ){if ( scope.enabled===false || scope.enableKeys===false || scope.enablePan===false ) return;handleKeyDown( event );}function onTouchStart( event ){if ( scope.enabled===false ) return;switch ( event.touches.length ){case 1: if ( scope.enableRotate===false ) return;handleTouchStartRotate( event );state = STATE.TOUCH_ROTATE;break;case 2: if ( scope.enableZoom===false ) return;handleTouchStartDolly( event );state = STATE.TOUCH_DOLLY;break;case 3: if ( scope.enablePan===false ) return;handleTouchStartPan( event );state = STATE.TOUCH_PAN;break;default: state = STATE.NONE;}if ( state !== STATE.NONE ){scope.dispatchEvent( startEvent );}} function onTouchMove( event ){if ( scope.enabled===false ) return;event.preventDefault();event.stopPropagation();switch ( event.touches.length ){case 1: if ( scope.enableRotate===false ) return;if ( state !== STATE.TOUCH_ROTATE ) return;handleTouchMoveRotate( event );break;case 2: if ( scope.enableZoom===false ) return;if ( state !== STATE.TOUCH_DOLLY ) return;handleTouchMoveDolly( event );break;case 3: if ( scope.enablePan===false ) return;if ( state !== STATE.TOUCH_PAN ) return;handleTouchMovePan( event );break;default: state = STATE.NONE;}} function onTouchEnd( event ){if ( scope.enabled===false ) return;handleTouchEnd( event );scope.dispatchEvent( endEvent );state = STATE.NONE;}function onContextMenu( event ){if ( scope.enabled===false ) return;event.preventDefault();}scope.domElement.addEventListener( 'contextmenu', onContextMenu, false );scope.domElement.addEventListener( 'mousedown', onMouseDown, false );scope.domElement.addEventListener( 'wheel', onMouseWheel, false );scope.domElement.addEventListener( 'touchstart', onTouchStart, false );scope.domElement.addEventListener( 'touchend', onTouchEnd, false );scope.domElement.addEventListener( 'touchmove', onTouchMove, false );window.addEventListener( 'keydown', onKeyDown, false );this.update();};THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype );THREE.OrbitControls.prototype.constructor = THREE.OrbitControls;Object.defineProperties( THREE.OrbitControls.prototype,{center:{get: function (){console.warn( 'THREE.OrbitControls: .center has been renamed to .target' );return this.target;}}, noZoom:{get: function (){console.warn( 'THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead.' );return!this.enableZoom;}, set: function ( value ){console.warn( 'THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead.' );this.enableZoom =!value;}}, noRotate:{get: function (){console.warn( 'THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead.' );return!this.enableRotate;}, set: function ( value ){console.warn( 'THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead.' );this.enableRotate =!value;}}, noPan:{get: function (){console.warn( 'THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead.' );return!this.enablePan;}, set: function ( value ){console.warn( 'THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead.' );this.enablePan =!value;}}, noKeys:{get: function (){console.warn( 'THREE.OrbitControls: .noKeys has been deprecated. Use .enableKeys instead.' );return!this.enableKeys;}, set: function ( value ){console.warn( 'THREE.OrbitControls: .noKeys has been deprecated. Use .enableKeys instead.' );this.enableKeys =!value;}}, staticMoving:{get: function (){console.warn( 'THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead.' );return!this.enableDamping;}, set: function ( value ){console.warn( 'THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead.' );this.enableDamping =!value;}}, dynamicDampingFactor:{get: function (){console.warn( 'THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead.' );return this.dampingFactor;}, set: function ( value ){console.warn( 'THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead.' );this.dampingFactor = value;}}});

const renderer = new THREE.WebGLRenderer({antialias:true});

const cam = new THREE.PerspectiveCamera(45, innerWidth/innerHeight, 0.1, 100);
cam.position.z = -16;
cam.position.y = 6;
// cam.position.x = 6;
const scene = new THREE.Scene();
cam.lookAt(scene.position);
document.body.appendChild(renderer.domElement);
renderer.setSize(innerWidth, innerHeight);

renderer.shadowMap.type = THREE.PCFSoftShadowMap;

controls = new THREE.OrbitControls(cam, renderer.domElement);
renderer.setPixelRatio(devicePixelRatio)
const update = e=>{
  

  renderer.render(scene,cam);
  if(autoRotate){
    cam.position.set(16*Math.sin(Date.now()/3000),6,16*Math.cos(Date.now()/3000));
    cam.lookAt(scene.position);
                                 
  }
renderer.setClearColor(0x2f2f31);
  
  cradle.update();
  
  requestAnimationFrame(update);
}


let light = new THREE.SpotLight(0xfff0ff,0.9);
light.castShadow = true;
light.angle = .6;
scene.add(light);
light.position.set(10,10,10);

 light = new THREE.SpotLight(0xf0ffff,0.9);
light.castShadow = true;
light.angle = .6;
scene.add(light);
light.position.set(-10,10,-10);
scene.add(light);

renderer.shadowMap.enabled = true;




let m = new THREE.Vector2();
let mx =0;

let my = 0;
document.body.addEventListener('mousemove', evt=>{
  
    
  
    m.set(evt.clientX/innerWidth-0.5, -evt.clientY/innerHeight+0.5);
  
  
  
});


class Cradle extends THREE.Object3D {
  
  
  update() {
  this.balls[0].rotation.x = Math.max(0,Math.sin(Date.now()/100));

  this.balls[this.balls.length-1].rotation.x = Math.min(0,Math.sin(Date.now()/100));

  }
  constructor() {
    super();
    
let tex = new THREE.CubeTextureLoader()
.setPath("https://threejs.org/examples/textures/cube/Bridge2/")
.setCrossOrigin("Anonymous")
.load("xxyyzz"
  .split("")
  .map((e,i)=>(i%2==0?"pos":"neg")+e+".jpg"),e=>update(e)
);


                  
let sphereGeo = new THREE.SphereGeometry(.5, 32,32);

let tl = new THREE.TextureLoader()
  .setCrossOrigin("Anonymous")
  .setPath("https://threejs.org/examples/textures/")

let wood = new THREE.MeshPhongMaterial({
  bumpMap:tl.load("hardwood2_bump.jpg"),
  map:tl.load("hardwood2_diffuse.jpg"),
});

let metal = new THREE.MeshPhongMaterial({
  envMap:tex,
  emissive:0x808080
});


const wireLength = 2.5;
let stringGeo = new THREE.Mesh(new THREE.CylinderGeometry(0.01,0.01, wireLength, 32), metal);


tex.needsUpdate = true;
this.balls =[];
for(var i =0;i<count;i++) {
  let segment = new THREE.Object3D();
  this.add(segment);
  segment.position.set(0,4, i-count/2);

  let ball = new THREE.Mesh(sphereGeo,metal);
  let pivot = new THREE.Object3D();
  segment.add(ball);
  
  ball.add(pivot);
  pivot.rotation.z = Math.PI/7;
  let wire1 = stringGeo.clone();
  wire1.position.y=wireLength/2.4;
  pivot.add(wire1);

   pivot = new THREE.Object3D();
  ball.add(pivot);
  pivot.rotation.z = -Math.PI/7;
   wire1 = stringGeo.clone();
  wire1.position.y=wireLength/2.4;
  pivot.add(wire1);
 this.balls.push(segment);
  ball.position.y = -2;
}

var geo = new THREE.Geometry();
geo.vertices = [
  new THREE.Vector3(-0,0,-.5),
  new THREE.Vector3(-.5,0,-.5),
  new THREE.Vector3(.5,0,-.5),
  new THREE.Vector3(.5,1,-.5),
  new THREE.Vector3(.5,1,.5),
  new THREE.Vector3(.5,0,.5),
  new THREE.Vector3(-.5,0,.5),
  new THREE.Vector3(-.5,1,.5),
  new THREE.Vector3(-.5,1,-.5),
  new THREE.Vector3(-.5,0,-.5),
].map(e=>{
  e.x*=2;
  e.y*=4;
  e.z*=6;
  return e;
}).reduce((o,v,i,a)=>{
	const next = a[(i+1)%a.length];
	const prev = a[(i-1+a.length)%a.length];
	o.push(	v.clone().lerp(prev,0.1),
			v.clone(),
			v.clone().lerp(next,0.1));
	return o;
},[]);

var curve = new THREE.CatmullRomCurve3(geo.vertices);

var tGeo = new THREE.TubeGeometry(curve,400,.1);
let tube = new THREE.Mesh(tGeo,metal);
tube.position.z = -0.5;
tube.position.y = 0.1;
this.add(tube);

geo.vertices = curve.getPoints(100);    



let cyl = new THREE.Mesh(new THREE.CylinderGeometry(4.9,5,.1,32), wood);
this.add(cyl);
cyl.position.y = -0.05;
 cyl = new THREE.Mesh(new THREE.CylinderGeometry(5,5,.1,32), wood);
this.add(cyl);
cyl.position.y = -0.15;
    this.traverse(e=>{
      e.castShadow = true;
      e.receiveShadow = true;
    });
  }
  
}



const count = 6;

let autoRotate = true;
window.addEventListener('mousedown', e=>{
  autoRotate = false;
});


const cradle = new Cradle();
scene.add(cradle)


              
            
!
999px

Console