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webgl_fire.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - fire</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">
</head>
<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener noreferrer">three.js</a> fire and smoke demo
</div>
<script type="module">
import * as THREE from '../build/three.module.js';
import Stats from './jsm/libs/stats.module.js';
import { GUI } from './jsm/libs/dat.gui.module.js';
import { Fire } from './jsm/objects/Fire.js';
var camera, scene, renderer, stats;
var fire;
var params = {
color1: '#ffffff',
color2: '#ffa000',
color3: '#000000',
colorBias: 0.8,
burnRate: 0.35,
diffuse: 1.33,
viscosity: 0.25,
expansion: - 0.25,
swirl: 50.0,
drag: 0.35,
airSpeed: 12.0,
windX: 0.0,
windY: 0.75,
speed: 500.0,
massConservation: false
};
init();
animate();
function init() {
var width = window.innerWidth;
var height = window.innerHeight;
camera = new THREE.PerspectiveCamera( 70, width / height, 1, 1000 );
camera.position.z = 25;
scene = new THREE.Scene();
scene.background = new THREE.Color( 0x000000 );
var ambientLight = new THREE.AmbientLight( 0xcccccc, 0.4 );
scene.add( ambientLight );
var pointLight = new THREE.PointLight( 0xffffff, 0.8 );
camera.add( pointLight );
scene.add( camera );
var plane = new THREE.PlaneBufferGeometry( 20, 20 );
fire = new Fire( plane, {
textureWidth: 512,
textureHeight: 512,
debug: false
} );
fire.position.z = - 2;
scene.add( fire );
renderer = new THREE.WebGLRenderer( { antialias: true, alpha: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.autoClear = false;
document.body.appendChild( renderer.domElement );
function updateColor1( value ) {
fire.color1.set( value );
}
function updateColor2( value ) {
fire.color2.set( value );
}
function updateColor3( value ) {
fire.color3.set( value );
}
function updateColorBias( value ) {
fire.colorBias = value;
}
function updateBurnRate( value ) {
fire.burnRate = value;
}
function updateDiffuse( value ) {
fire.diffuse = value;
}
function updateViscosity( value ) {
fire.viscosity = value;
}
function updateExpansion( value ) {
fire.expansion = value;
}
function updateSwirl( value ) {
fire.swirl = value;
}
function updateDrag( value ) {
fire.drag = value;
}
function updateAirSpeed( value ) {
fire.airSpeed = value;
}
function updateWindX( value ) {
fire.windVector.x = value;
}
function updateWindY( value ) {
fire.windVector.y = value;
}
function updateSpeed( value ) {
fire.speed = value;
}
function updateMassConservation( value ) {
fire.massConservation = value;
}
params.Single = function () {
fire.clearSources();
fire.addSource( 0.5, 0.1, 0.1, 1.0, 0.0, 1.0 );
};
params.Multiple = function () {
fire.clearSources();
fire.addSource( 0.45, 0.1, 0.1, 0.5, 0.0, 1.0 );
fire.addSource( 0.55, 0.1, 0.1, 0.5, 0.0, 1.0 );
};
params.Text = function () {
var text = "Three JS";
var size = 180;
var color = "#FF0040";
var canvas = document.createElement( "canvas" );
canvas.width = 1024;
canvas.height = 1024;
var context = canvas.getContext( "2d" );
context.font = size + "pt Arial";
context.strokeStyle = "black";
context.strokeRect( 0, 0, canvas.width, canvas.height );
context.textAlign = "center";
context.textBaseline = "middle";
context.lineWidth = 5;
context.strokeStyle = color;
context.fillStyle = "black";
context.strokeText( text, canvas.width / 2, canvas.height * 0.75 );
var texture = new THREE.Texture( canvas );
texture.needsUpdate = true;
fire.setSourceMap( texture );
};
// dat.gui
var gui = new GUI();
gui.add( params, "Single" );
gui.add( params, "Multiple" );
gui.add( params, "Text" );
gui.addColor( params, 'color1' ).onChange( updateColor1 );
gui.addColor( params, 'color2' ).onChange( updateColor2 );
gui.addColor( params, 'color3' ).onChange( updateColor3 );
gui.add( params, 'colorBias', 0.0, 1.0 ).onChange( updateColorBias );
gui.add( params, 'burnRate', 0.0, 10.0 ).onChange( updateBurnRate );
gui.add( params, 'diffuse', 0.0, 5.0 ).step( 0.01 ).onChange( updateDiffuse );
gui.add( params, 'viscosity', 0.0, 5.0 ).step( 0.01 ).onChange( updateViscosity );
gui.add( params, 'expansion', - 1.0, 1.0 ).step( 0.01 ).onChange( updateExpansion );
gui.add( params, 'swirl', 0.0, 50.0 ).step( 0.01 ).onChange( updateSwirl );
gui.add( params, 'drag', 0.0, 1.0 ).onChange( updateDrag );
gui.add( params, 'airSpeed', 0.0, 50.0 ).onChange( updateAirSpeed );
gui.add( params, 'windX', - 5, 5 ).step( 0.01 ).onChange( updateWindX );
gui.add( params, 'windY', - 5, 5 ).step( 0.01 ).onChange( updateWindY );
gui.add( params, 'speed', 0, 1000 ).onChange( updateSpeed );
gui.add( params, 'massConservation' ).onChange( updateMassConservation );
function updateAll() {
updateColor1( params.color1 );
updateColor2( params.color2 );
updateColor3( params.color3 );
updateColorBias( params.colorBias );
updateBurnRate( params.burnRate );
updateDiffuse( params.diffuse );
updateViscosity( params.viscosity );
updateExpansion( params.expansion );
updateSwirl( params.swirl );
updateDrag( params.drag );
updateAirSpeed( params.airSpeed );
updateWindX( params.windX );
updateWindY( params.windY );
updateSpeed( params.speed );
updateMassConservation( params.massConservation );
for ( var i in gui.__controllers ) {
gui.__controllers[ i ].updateDisplay();
}
}
params.Candle = function () {
params.color1 = 0xffffff;
params.color2 = 0xffa000;
params.color3 = 0x000000;
params.windX = 0.0;
params.windY = 0.5;
params.colorBias = 0.3;
params.burnRate = 1.6;
params.diffuse = 1.33;
params.viscosity = 1.33;
params.expansion = 0.0;
params.swirl = 0.0;
params.drag = 0.0;
params.airSpeed = 8.0;
params.speed = 500.0;
params.massConservation = false;
updateAll();
};
gui.add( params, 'Candle' );
params.Torch = function () {
params.color1 = 0xffdcaa;
params.color2 = 0xffa000;
params.color3 = 0x000000;
params.windX = 0.0;
params.windY = 0.75;
params.colorBias = 0.9;
params.burnRate = 1.0;
params.diffuse = 1.33;
params.viscosity = 0.25;
params.expansion = 0.0;
params.swirl = 50.0;
params.drag = 0.35;
params.airSpeed = 10.0;
params.speed = 500.0;
params.massConservation = false;
updateAll();
};
gui.add( params, 'Torch' );
params.Campfire = function () {
params.color1 = 0xffffff;
params.color2 = 0xffa000;
params.color3 = 0x000000;
params.windX = 0.0;
params.windY = 0.75;
params.colorBias = 0.8;
params.burnRate = 0.3;
params.diffuse = 1.33;
params.viscosity = 0.25;
params.expansion = - 0.25;
params.swirl = 50.0;
params.drag = 0.35;
params.airSpeed = 12.0;
params.speed = 500.0;
params.massConservation = false;
updateAll();
};
gui.add( params, 'Campfire' );
params.Fireball = function () {
params.color1 = 0xffffff;
params.color2 = 0xffa000;
params.color3 = 0x000000;
params.windX = 0.0;
params.windY = 0.75;
params.colorBias = 0.8;
params.burnRate = 1.2;
params.diffuse = 3.0;
params.viscosity = 0.0;
params.expansion = 0.0;
params.swirl = 6.0;
params.drag = 0.0;
params.airSpeed = 20.0;
params.speed = 500.0;
params.massConservation = false;
updateAll();
};
gui.add( params, 'Fireball' );
params.Iceball = function () {
params.color1 = 0x00bdf7;
params.color2 = 0x1b3fb6;
params.color3 = 0x001869;
params.windX = 0.0;
params.windY = - 0.25;
params.colorBias = 0.25;
params.burnRate = 2.6;
params.diffuse = 5.0;
params.viscosity = 0.5;
params.expansion = 0.75;
params.swirl = 30.0;
params.drag = 0.0;
params.airSpeed = 40.0;
params.speed = 500.0;
params.massConservation = false;
updateAll();
};
gui.add( params, 'Iceball' );
params.Smoke = function () {
params.color1 = 0xd2d2d2;
params.color2 = 0xd7d7d7;
params.color3 = 0x000000;
params.windX = - 0.05;
params.windY = 0.15;
params.colorBias = 0.95;
params.burnRate = 0.0;
params.diffuse = 1.5;
params.viscosity = 0.25;
params.expansion = 0.2;
params.swirl = 3.75;
params.drag = 0.4;
params.airSpeed = 18.0;
params.speed = 500.0;
params.massConservation = false;
updateAll();
};
gui.add( params, 'Smoke' );
params.Cigar = function () {
params.color1 = 0xc5c5c5;
params.color2 = 0x787878;
params.color3 = 0x000000;
params.windX = 0.0;
params.windY = 0.3;
params.colorBias = 0.55;
params.burnRate = 0.0;
params.diffuse = 1.3;
params.viscosity = 0.05;
params.expansion = - 0.05;
params.swirl = 3.7;
params.drag = 0.6;
params.airSpeed = 6.0;
params.speed = 500.0;
params.massConservation = false;
updateAll();
};
gui.add( params, 'Cigar' );
gui.open();
params.Campfire();
params.Single();
stats = new Stats();
document.body.appendChild( stats.dom );
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
var width = window.innerWidth;
var height = window.innerHeight;
camera.aspect = width / height;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
renderer.clear();
renderer.render( scene, camera );
stats.update();
}
</script>
</body>
</html>