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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>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
<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();
render();
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 );
container.appendChild( renderer.domElement );
// A cube, in the middle.
cubeTexture = new THREE.Texture( undefined, THREE.UVMapping, THREE.RepeatWrapping, THREE.RepeatWrapping );
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 );
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 );
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 render() {
requestAnimationFrame( render );
// 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>