Animation de texte fluide

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Animation de texte fluide

Recommandé

13 June 2025

Un code par ashimadison8

22 June 2025

Exemple de formulaire de connexion HTML

25 July 2025

Modèle de page de connexion HTML

index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Webleb</title>
  <meta content="width=device-width, initial-scale=1.0" name="viewport">
  <meta content="" name="keywords">
  <meta content="" name="description">

<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r125/three.min.js"></script>
  <link href="css/styles.css" rel="stylesheet">
  <script src="/js/main.js"></script>
<script type="x-shader/x-vertex" id="vertexshader">

attribute float size;
  attribute vec3 customColor;
  varying vec3 vColor;

void main() {

vColor = customColor;
    vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
    gl_PointSize = size * ( 300.0 / -mvPosition.z );
    gl_Position = projectionMatrix * mvPosition;

}

</script>
<script type="x-shader/x-fragment" id="fragmentshader">

uniform vec3 color;
 uniform sampler2D pointTexture;

varying vec3 vColor;

void main() {

gl_FragColor = vec4( color * vColor, 1.0 );
   gl_FragColor = gl_FragColor * texture2D( pointTexture, gl_PointCoord );

}
</script>
  </head>
  <body>
    <div id="magic"></div>
    <div class="playground">
      <div class="bottomPosition">
      </div>
    </div>
</body>
</html>

styles.css

main.js

const preload = () => {

let manager = new THREE.LoadingManager();
	manager.onLoad = function() { 
	  const environment = new Environment( typo, particle );
	}
  
	var typo = null;
	const loader = new THREE.FontLoader( manager );
	const font = loader.load('https://res.cloudinary.com/dydre7amr/raw/upload/v1612950355/font_zsd4dr.json', function ( font ) { typo = font; });
	const particle = new THREE.TextureLoader( manager ).load( 'https://res.cloudinary.com/dfvtkoboz/image/upload/v1605013866/particle_a64uzf.png');
  
  }
  
  if ( document.readyState === "complete" || (document.readyState !== "loading" && !document.documentElement.doScroll))
	preload ();
  else
	document.addEventListener("DOMContentLoaded", preload ); 
  
  class Environment {
  
	constructor( font, particle ){ 
  
	  this.font = font;
	  this.particle = particle;
	  this.container = document.querySelector( '#magic' );
	  this.scene = new THREE.Scene();
	  this.createCamera();
	  this.createRenderer();
	  this.setup()
	  this.bindEvents();
	}
  
	bindEvents(){
  
	  window.addEventListener( 'resize', this.onWindowResize.bind( this ));
	  
	}
  
	setup(){ 
  
	  this.createParticles = new CreateParticles( this.scene, this.font,             this.particle, this.camera, this.renderer );
	}
  
	render() {
	  
	   this.createParticles.render()
	   this.renderer.render( this.scene, this.camera )
	}
  
	createCamera() {
  
	  this.camera = new THREE.PerspectiveCamera( 65, this.container.clientWidth /  this.container.clientHeight, 1, 10000 );
	  this.camera.position.set( 0,0, 100 );
  
	}
  
	createRenderer() {
  
	  this.renderer = new THREE.WebGLRenderer();
	  this.renderer.setSize( this.container.clientWidth, this.container.clientHeight );
  
	  this.renderer.setPixelRatio( Math.min( window.devicePixelRatio, 2));
  
	  this.renderer.outputEncoding = THREE.sRGBEncoding;
	  this.container.appendChild( this.renderer.domElement );
  
	  this.renderer.setAnimationLoop(() => { this.render() })
  
	}
  
	onWindowResize(){
  
	  this.camera.aspect = this.container.clientWidth / this.container.clientHeight;
	  this.camera.updateProjectionMatrix();
	  this.renderer.setSize( this.container.clientWidth, this.container.clientHeight );
  
	}
  }
  
  class CreateParticles {
	  
	  constructor( scene, font, particleImg, camera, renderer ) {
	  
		  this.scene = scene;
		  this.font = font;
		  this.particleImg = particleImg;
		  this.camera = camera;
		  this.renderer = renderer;
		  
		  this.raycaster = new THREE.Raycaster();
		  this.mouse = new THREE.Vector2(-200, 200);
		  
		  this.colorChange = new THREE.Color();
  
		  this.buttom = false;
  
		  this.data = {
  
			  text: 'WEB\nLEB',
			  amount: 1500,
			  particleSize: 1,
			  particleColor: 0xffffff,
			  textSize: 10,
			  area: 250,
			  ease: .05,
		  }
  
		  this.setup();
		  this.bindEvents();
  
	  }
  
  
	  setup(){
  
		  const geometry = new THREE.PlaneGeometry( this.visibleWidthAtZDepth( 100, this.camera ), this.visibleHeightAtZDepth( 100, this.camera ));
		  const material = new THREE.MeshBasicMaterial( { color: 0x00ff00, transparent: true } );
		  this.planeArea = new THREE.Mesh( geometry, material );
		  this.planeArea.visible = false;
		  this.createText();
  
	  }
  
	  bindEvents() {
  
		  document.addEventListener( 'mousedown', this.onMouseDown.bind( this ));
		  document.addEventListener( 'mousemove', this.onMouseMove.bind( this ));
		  document.addEventListener( 'mouseup', this.onMouseUp.bind( this ));
		  
	  }
  
	  onMouseDown(){
		  
		  this.mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
		  this.mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
  
		  const vector = new THREE.Vector3( this.mouse.x, this.mouse.y, 0.5);
		  vector.unproject( this.camera );
		  const dir = vector.sub( this.camera.position ).normalize();
		  const distance = - this.camera.position.z / dir.z;
		  this.currenPosition = this.camera.position.clone().add( dir.multiplyScalar( distance ) );
		  
		  const pos = this.particles.geometry.attributes.position;
		  this.buttom = true;
		  this.data.ease = .01;
		  
	  }
  
	  onMouseUp(){
  
		  this.buttom = false;
		  this.data.ease = .05;
	  }
  
	  onMouseMove( ) { 
  
		  this.mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
		  this.mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
  
	  }
  
	  render( level ){ 
  
		  const time = ((.001 * performance.now())%12)/12;
		  const zigzagTime = (1 + (Math.sin( time * 2 * Math.PI )))/6;
  
		  this.raycaster.setFromCamera( this.mouse, this.camera );
  
		  const intersects = this.raycaster.intersectObject( this.planeArea );
  
		  if ( intersects.length > 0 ) {
  
			  const pos = this.particles.geometry.attributes.position;
			  const copy = this.geometryCopy.attributes.position;
			  const coulors = this.particles.geometry.attributes.customColor;
			  const size = this.particles.geometry.attributes.size;
  
			  const mx = intersects[ 0 ].point.x;
			  const my = intersects[ 0 ].point.y;
			  const mz = intersects[ 0 ].point.z;
  
			  for ( var i = 0, l = pos.count; i < l; i++) {
  
				  const initX = copy.getX(i);
				  const initY = copy.getY(i);
				  const initZ = copy.getZ(i);
  
				  let px = pos.getX(i);
				  let py = pos.getY(i);
				  let pz = pos.getZ(i);
  
				  this.colorChange.setHSL( .5, 1 , 1 )
				  coulors.setXYZ( i, this.colorChange.r, this.colorChange.g, this.colorChange.b )
				  coulors.needsUpdate = true;
  
				  size.array[ i ]  = this.data.particleSize;
				  size.needsUpdate = true;
  
				  let dx = mx - px;
				  let dy = my - py;
				  const dz = mz - pz;
  
				  const mouseDistance = this.distance( mx, my, px, py )
				  let d = ( dx = mx - px ) * dx + ( dy = my - py ) * dy;
				  const f = - this.data.area/d;
  
				  if( this.buttom ){ 
  
					  const t = Math.atan2( dy, dx );
					  px -= f * Math.cos( t );
					  py -= f * Math.sin( t );
  
					  this.colorChange.setHSL( .5 + zigzagTime, 1.0 , .5 )
					  coulors.setXYZ( i, this.colorChange.r, this.colorChange.g, this.colorChange.b )
					  coulors.needsUpdate = true;
  
					  if ((px > (initX + 70)) || ( px < (initX - 70)) || (py > (initY + 70) || ( py < (initY - 70)))){
  
						  this.colorChange.setHSL( .15, 1.0 , .5 )
						  coulors.setXYZ( i, this.colorChange.r, this.colorChange.g, this.colorChange.b )
						  coulors.needsUpdate = true;
  
					  }
  
				  }else{
				  
					  if( mouseDistance < this.data.area ){
  
						  if(i%5==0){
  
							  const t = Math.atan2( dy, dx );
							  px -= .03 * Math.cos( t );
							  py -= .03 * Math.sin( t );
  
							  this.colorChange.setHSL( .15 , 1.0 , .5 )
							  coulors.setXYZ( i, this.colorChange.r, this.colorChange.g, this.colorChange.b )
							  coulors.needsUpdate = true;
  
							  size.array[ i ]  =  this.data.particleSize /1.2;
							  size.needsUpdate = true;
  
						  }else{
  
							  const t = Math.atan2( dy, dx );
							  px += f * Math.cos( t );
							  py += f * Math.sin( t );
  
							  pos.setXYZ( i, px, py, pz );
							  pos.needsUpdate = true;
  
							  size.array[ i ]  = this.data.particleSize * 1.3 ;
							  size.needsUpdate = true;
						  }
  
						  if ((px > (initX + 10)) || ( px < (initX - 10)) || (py > (initY + 10) || ( py < (initY - 10)))){
  
							  this.colorChange.setHSL( .15, 1.0 , .5 )
							  coulors.setXYZ( i, this.colorChange.r, this.colorChange.g, this.colorChange.b )
							  coulors.needsUpdate = true;
  
							  size.array[ i ]  = this.data.particleSize /1.8;
							  size.needsUpdate = true;
  
						  }
					  }
  
				  }
  
				  px += ( initX  - px ) * this.data.ease;
				  py += ( initY  - py ) * this.data.ease;
				  pz += ( initZ  - pz ) * this.data.ease;
  
				  pos.setXYZ( i, px, py, pz );
				  pos.needsUpdate = true;
  
			  }
		  }
	  }
  
	  createText(){ 
  
		  let thePoints = [];
  
		  let shapes = this.font.generateShapes( this.data.text , this.data.textSize  );
		  let geometry = new THREE.ShapeGeometry( shapes );
		  geometry.computeBoundingBox();
	  
		  const xMid = - 0.5 * ( geometry.boundingBox.max.x - geometry.boundingBox.min.x );
		  const yMid =  (geometry.boundingBox.max.y - geometry.boundingBox.min.y)/2.85;
  
		  geometry.center();
  
		  let holeShapes = [];
  
		  for ( let q = 0; q < shapes.length; q ++ ) {
  
			  let shape = shapes[ q ];
  
			  if ( shape.holes && shape.holes.length > 0 ) {
  
				  for ( let  j = 0; j < shape.holes.length; j ++ ) {
  
					  let  hole = shape.holes[ j ];
					  holeShapes.push( hole );
				  }
			  }
  
		  }
		  shapes.push.apply( shapes, holeShapes );
  
		  let colors = [];
		  let sizes = [];
					  
		  for ( let  x = 0; x < shapes.length; x ++ ) {
  
			  let shape = shapes[ x ];
  
			  const amountPoints = ( shape.type == 'Path') ? this.data.amount/2 : this.data.amount;
  
			  let points = shape.getSpacedPoints( amountPoints ) ;
  
			  points.forEach( ( element, z ) => {
						  
				  const a = new THREE.Vector3( element.x, element.y, 0 );
				  thePoints.push( a );
				  colors.push( this.colorChange.r, this.colorChange.g, this.colorChange.b);
				  sizes.push( 1 )
  
				  });
		  }
  
		  let geoParticles = new THREE.BufferGeometry().setFromPoints( thePoints );
		  geoParticles.translate( xMid, yMid, 0 );
				  
		  geoParticles.setAttribute( 'customColor', new THREE.Float32BufferAttribute( colors, 3 ) );
		  geoParticles.setAttribute( 'size', new THREE.Float32BufferAttribute( sizes, 1) );
  
		  const material = new THREE.ShaderMaterial( {
  
			  uniforms: {
				  color: { value: new THREE.Color( 0xffffff ) },
				  pointTexture: { value: this.particleImg }
			  },
			  vertexShader: document.getElementById( 'vertexshader' ).textContent,
			  fragmentShader: document.getElementById( 'fragmentshader' ).textContent,
  
			  blending: THREE.AdditiveBlending,
			  depthTest: false,
			  transparent: true,
		  } );
  
		  this.particles = new THREE.Points( geoParticles, material );
		  this.scene.add( this.particles );
  
		  this.geometryCopy = new THREE.BufferGeometry();
		  this.geometryCopy.copy( this.particles.geometry );
		  
	  }
  
	  visibleHeightAtZDepth ( depth, camera ) {
  
		const cameraOffset = camera.position.z;
		if ( depth < cameraOffset ) depth -= cameraOffset;
		else depth += cameraOffset;
  
		const vFOV = camera.fov * Math.PI / 180; 
  
		return 2 * Math.tan( vFOV / 2 ) * Math.abs( depth );
	  }
  
	  visibleWidthAtZDepth( depth, camera ) {
  
		const height = this.visibleHeightAtZDepth( depth, camera );
		return height * camera.aspect;
  
	  }
  
	  distance (x1, y1, x2, y2){
		 
		  return Math.sqrt(Math.pow((x1 - x2), 2) + Math.pow((y1 - y2), 2));
	  }
  }