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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js raycaster - texture</title>
- <meta charset="utf-8">
- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
- <link type="text/css" rel="stylesheet" href="main.css">
- <style>
- body {
- background-color: #fff;
- color: #444;
- }
- a {
- color: #08f;
- }
- </style>
- </head>
- <body>
- <div id="container"></div>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> raycaster - texture
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- const WRAPPING = {
- 'RepeatWrapping': THREE.RepeatWrapping,
- 'ClampToEdgeWrapping': THREE.ClampToEdgeWrapping,
- 'MirroredRepeatWrapping': THREE.MirroredRepeatWrapping
- };
- const params = {
- wrapS: THREE.RepeatWrapping,
- wrapT: THREE.RepeatWrapping,
- offsetX: 0,
- offsetY: 0,
- repeatX: 1,
- repeatY: 1,
- rotation: 0,
- };
- function CanvasTexture( parentTexture ) {
- this._canvas = document.createElement( 'canvas' );
- this._canvas.width = this._canvas.height = 1024;
- this._context2D = this._canvas.getContext( '2d' );
- if ( parentTexture ) {
- this._parentTexture.push( parentTexture );
- parentTexture.image = this._canvas;
- }
- const that = this;
- this._background = document.createElement( 'img' );
- this._background.addEventListener( 'load', function () {
- that._canvas.width = that._background.naturalWidth;
- that._canvas.height = that._background.naturalHeight;
- that._crossRadius = Math.ceil( Math.min( that._canvas.width, that._canvas.height / 30 ) );
- that._crossMax = Math.ceil( 0.70710678 * that._crossRadius );
- that._crossMin = Math.ceil( that._crossMax / 10 );
- that._crossThickness = Math.ceil( that._crossMax / 10 );
- that._draw();
- } );
- this._background.crossOrigin = '';
- this._background.src = 'textures/uv_grid_opengl.jpg';
- this._draw();
- }
- CanvasTexture.prototype = {
- constructor: CanvasTexture,
- _canvas: null,
- _context2D: null,
- _xCross: 0,
- _yCross: 0,
- _crossRadius: 57,
- _crossMax: 40,
- _crossMin: 4,
- _crossThickness: 4,
- _parentTexture: [],
- addParent: function ( parentTexture ) {
- if ( this._parentTexture.indexOf( parentTexture ) === - 1 ) {
- this._parentTexture.push( parentTexture );
- parentTexture.image = this._canvas;
- }
- },
- setCrossPosition: function ( x, y ) {
- this._xCross = x * this._canvas.width;
- this._yCross = y * this._canvas.height;
- this._draw();
- },
- _draw: function () {
- if ( ! this._context2D ) return;
- this._context2D.clearRect( 0, 0, this._canvas.width, this._canvas.height );
- // Background.
- this._context2D.drawImage( this._background, 0, 0 );
- // Yellow cross.
- this._context2D.lineWidth = this._crossThickness * 3;
- this._context2D.strokeStyle = '#FFFF00';
- this._context2D.beginPath();
- this._context2D.moveTo( this._xCross - this._crossMax - 2, this._yCross - this._crossMax - 2 );
- this._context2D.lineTo( this._xCross - this._crossMin, this._yCross - this._crossMin );
- this._context2D.moveTo( this._xCross + this._crossMin, this._yCross + this._crossMin );
- this._context2D.lineTo( this._xCross + this._crossMax + 2, this._yCross + this._crossMax + 2 );
- this._context2D.moveTo( this._xCross - this._crossMax - 2, this._yCross + this._crossMax + 2 );
- this._context2D.lineTo( this._xCross - this._crossMin, this._yCross + this._crossMin );
- this._context2D.moveTo( this._xCross + this._crossMin, this._yCross - this._crossMin );
- this._context2D.lineTo( this._xCross + this._crossMax + 2, this._yCross - this._crossMax - 2 );
- this._context2D.stroke();
- for ( let i = 0; i < this._parentTexture.length; i ++ ) {
- this._parentTexture[ i ].needsUpdate = true;
- }
- }
- };
- const width = window.innerWidth;
- const height = window.innerHeight;
- let canvas;
- let planeTexture, cubeTexture, circleTexture;
- let container;
- let camera, scene, renderer;
- const raycaster = new THREE.Raycaster();
- const mouse = new THREE.Vector2();
- const onClickPosition = new THREE.Vector2();
- init();
- function init() {
- container = document.getElementById( 'container' );
- scene = new THREE.Scene();
- scene.background = new THREE.Color( 0xeeeeee );
- camera = new THREE.PerspectiveCamera( 45, width / height, 1, 1000 );
- camera.position.x = - 30;
- camera.position.y = 40;
- camera.position.z = 50;
- camera.lookAt( scene.position );
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( width, height );
- renderer.setAnimationLoop( animate );
- container.appendChild( renderer.domElement );
- // A cube, in the middle.
- cubeTexture = new THREE.Texture( undefined, THREE.UVMapping, THREE.RepeatWrapping, THREE.RepeatWrapping );
- cubeTexture.colorSpace = THREE.SRGBColorSpace;
- canvas = new CanvasTexture( cubeTexture );
- const cubeMaterial = new THREE.MeshBasicMaterial( { map: cubeTexture } );
- const cubeGeometry = new THREE.BoxGeometry( 20, 20, 20 );
- let uvs = cubeGeometry.attributes.uv.array;
- // Set a specific texture mapping.
- for ( let i = 0; i < uvs.length; i ++ ) {
- uvs[ i ] *= 2;
- }
- const cube = new THREE.Mesh( cubeGeometry, cubeMaterial );
- cube.position.x = 4;
- cube.position.y = - 5;
- cube.position.z = 0;
- scene.add( cube );
- // A plane on the left
- planeTexture = new THREE.Texture( undefined, THREE.UVMapping, THREE.MirroredRepeatWrapping, THREE.MirroredRepeatWrapping );
- planeTexture.colorSpace = THREE.SRGBColorSpace;
- canvas.addParent( planeTexture );
- const planeMaterial = new THREE.MeshBasicMaterial( { map: planeTexture } );
- const planeGeometry = new THREE.PlaneGeometry( 25, 25, 1, 1 );
- uvs = planeGeometry.attributes.uv.array;
- // Set a specific texture mapping.
- for ( let i = 0; i < uvs.length; i ++ ) {
- uvs[ i ] *= 2;
- }
- const plane = new THREE.Mesh( planeGeometry, planeMaterial );
- plane.position.x = - 16;
- plane.position.y = - 5;
- plane.position.z = 0;
- scene.add( plane );
- // A circle on the right.
- circleTexture = new THREE.Texture( undefined, THREE.UVMapping, THREE.RepeatWrapping, THREE.RepeatWrapping );
- circleTexture.colorSpace = THREE.SRGBColorSpace;
- canvas.addParent( circleTexture );
- const circleMaterial = new THREE.MeshBasicMaterial( { map: circleTexture } );
- const circleGeometry = new THREE.CircleGeometry( 25, 40, 0, Math.PI * 2 );
- uvs = circleGeometry.attributes.uv.array;
- // Set a specific texture mapping.
- for ( let i = 0; i < uvs.length; i ++ ) {
- uvs[ i ] = ( uvs[ i ] - 0.25 ) * 2;
- }
- const circle = new THREE.Mesh( circleGeometry, circleMaterial );
- circle.position.x = 24;
- circle.position.y = - 5;
- circle.position.z = 0;
- scene.add( circle );
- window.addEventListener( 'resize', onWindowResize );
- container.addEventListener( 'mousemove', onMouseMove );
- //
- const gui = new GUI();
- gui.title( 'Circle Texture Settings' );
- gui.add( params, 'wrapS', WRAPPING ).onChange( setwrapS );
- gui.add( params, 'wrapT', WRAPPING ).onChange( setwrapT );
- gui.add( params, 'offsetX', 0, 5 );
- gui.add( params, 'offsetY', 0, 5 );
- gui.add( params, 'repeatX', 0, 5 );
- gui.add( params, 'repeatY', 0, 5 );
- gui.add( params, 'rotation', 0, 2 * Math.PI );
- gui.open();
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function onMouseMove( evt ) {
- evt.preventDefault();
- const array = getMousePosition( container, evt.clientX, evt.clientY );
- onClickPosition.fromArray( array );
- const intersects = getIntersects( onClickPosition, scene.children );
- if ( intersects.length > 0 && intersects[ 0 ].uv ) {
- const uv = intersects[ 0 ].uv;
- intersects[ 0 ].object.material.map.transformUv( uv );
- canvas.setCrossPosition( uv.x, uv.y );
- }
- }
- function getMousePosition( dom, x, y ) {
- const rect = dom.getBoundingClientRect();
- return [ ( x - rect.left ) / rect.width, ( y - rect.top ) / rect.height ];
- }
- function getIntersects( point, objects ) {
- mouse.set( ( point.x * 2 ) - 1, - ( point.y * 2 ) + 1 );
- raycaster.setFromCamera( mouse, camera );
- return raycaster.intersectObjects( objects, false );
- }
- function animate() {
- // update texture parameters
- circleTexture.offset.x = params.offsetX;
- circleTexture.offset.y = params.offsetY;
- circleTexture.repeat.x = params.repeatX;
- circleTexture.repeat.y = params.repeatY;
- circleTexture.rotation = params.rotation;
- //
- renderer.render( scene, camera );
- }
- function setwrapS( value ) {
- circleTexture.wrapS = value;
- circleTexture.needsUpdate = true;
- }
- function setwrapT( value ) {
- circleTexture.wrapT = value;
- circleTexture.needsUpdate = true;
- }
- </script>
- </body>
- </html>
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