You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
367 lines
9.1 KiB
367 lines
9.1 KiB
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<title>three.js webgl - marching cubes</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="container"></div>
|
|
<div id="info">
|
|
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> -
|
|
marching cubes<br/>
|
|
based on greggman's <a href="https://webglsamples.org/blob/blob.html">blob</a>, original code by Henrik Rydgård
|
|
</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 Stats from 'three/addons/libs/stats.module.js';
|
|
|
|
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
|
|
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
|
|
import { MarchingCubes } from 'three/addons/objects/MarchingCubes.js';
|
|
import { ToonShader1, ToonShader2, ToonShaderHatching, ToonShaderDotted } from 'three/addons/shaders/ToonShader.js';
|
|
|
|
let container, stats;
|
|
|
|
let camera, scene, renderer;
|
|
|
|
let materials, current_material;
|
|
|
|
let light, pointLight, ambientLight;
|
|
|
|
let effect, resolution;
|
|
|
|
let effectController;
|
|
|
|
let time = 0;
|
|
|
|
const clock = new THREE.Clock();
|
|
|
|
init();
|
|
animate();
|
|
|
|
function init() {
|
|
|
|
container = document.getElementById( 'container' );
|
|
|
|
// CAMERA
|
|
|
|
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 10000 );
|
|
camera.position.set( - 500, 500, 1500 );
|
|
|
|
// SCENE
|
|
|
|
scene = new THREE.Scene();
|
|
scene.background = new THREE.Color( 0x050505 );
|
|
|
|
// LIGHTS
|
|
|
|
light = new THREE.DirectionalLight( 0xffffff );
|
|
light.position.set( 0.5, 0.5, 1 );
|
|
scene.add( light );
|
|
|
|
pointLight = new THREE.PointLight( 0xff3300 );
|
|
pointLight.position.set( 0, 0, 100 );
|
|
scene.add( pointLight );
|
|
|
|
ambientLight = new THREE.AmbientLight( 0x080808 );
|
|
scene.add( ambientLight );
|
|
|
|
// MATERIALS
|
|
|
|
materials = generateMaterials();
|
|
current_material = 'shiny';
|
|
|
|
// MARCHING CUBES
|
|
|
|
resolution = 28;
|
|
|
|
effect = new MarchingCubes( resolution, materials[ current_material ], true, true, 100000 );
|
|
effect.position.set( 0, 0, 0 );
|
|
effect.scale.set( 700, 700, 700 );
|
|
|
|
effect.enableUvs = false;
|
|
effect.enableColors = false;
|
|
|
|
scene.add( effect );
|
|
|
|
// RENDERER
|
|
|
|
renderer = new THREE.WebGLRenderer();
|
|
renderer.outputEncoding = THREE.sRGBEncoding;
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
container.appendChild( renderer.domElement );
|
|
|
|
// CONTROLS
|
|
|
|
const controls = new OrbitControls( camera, renderer.domElement );
|
|
controls.minDistance = 500;
|
|
controls.maxDistance = 5000;
|
|
|
|
// STATS
|
|
|
|
stats = new Stats();
|
|
container.appendChild( stats.dom );
|
|
|
|
// GUI
|
|
|
|
setupGui();
|
|
|
|
// EVENTS
|
|
|
|
window.addEventListener( 'resize', onWindowResize );
|
|
|
|
}
|
|
|
|
//
|
|
|
|
function onWindowResize() {
|
|
|
|
camera.aspect = window.innerWidth / window.innerHeight;
|
|
camera.updateProjectionMatrix();
|
|
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
|
|
}
|
|
|
|
function generateMaterials() {
|
|
|
|
// environment map
|
|
|
|
const path = 'textures/cube/SwedishRoyalCastle/';
|
|
const format = '.jpg';
|
|
const urls = [
|
|
path + 'px' + format, path + 'nx' + format,
|
|
path + 'py' + format, path + 'ny' + format,
|
|
path + 'pz' + format, path + 'nz' + format
|
|
];
|
|
|
|
const cubeTextureLoader = new THREE.CubeTextureLoader();
|
|
|
|
const reflectionCube = cubeTextureLoader.load( urls );
|
|
const refractionCube = cubeTextureLoader.load( urls );
|
|
refractionCube.mapping = THREE.CubeRefractionMapping;
|
|
|
|
// toons
|
|
|
|
const toonMaterial1 = createShaderMaterial( ToonShader1, light, ambientLight );
|
|
const toonMaterial2 = createShaderMaterial( ToonShader2, light, ambientLight );
|
|
const hatchingMaterial = createShaderMaterial( ToonShaderHatching, light, ambientLight );
|
|
const dottedMaterial = createShaderMaterial( ToonShaderDotted, light, ambientLight );
|
|
|
|
const texture = new THREE.TextureLoader().load( 'textures/uv_grid_opengl.jpg' );
|
|
texture.wrapS = THREE.RepeatWrapping;
|
|
texture.wrapT = THREE.RepeatWrapping;
|
|
|
|
const materials = {
|
|
'shiny': new THREE.MeshStandardMaterial( { color: 0x550000, envMap: reflectionCube, roughness: 0.1, metalness: 1.0 } ),
|
|
'chrome': new THREE.MeshLambertMaterial( { color: 0xffffff, envMap: reflectionCube } ),
|
|
'liquid': new THREE.MeshLambertMaterial( { color: 0xffffff, envMap: refractionCube, refractionRatio: 0.85 } ),
|
|
'matte': new THREE.MeshPhongMaterial( { specular: 0x111111, shininess: 1 } ),
|
|
'flat': new THREE.MeshLambertMaterial( { /*TODO flatShading: true */ } ),
|
|
'textured': new THREE.MeshPhongMaterial( { color: 0xffffff, specular: 0x111111, shininess: 1, map: texture } ),
|
|
'colors': new THREE.MeshPhongMaterial( { color: 0xffffff, specular: 0xffffff, shininess: 2, vertexColors: true } ),
|
|
'multiColors': new THREE.MeshPhongMaterial( { shininess: 2, vertexColors: true } ),
|
|
'plastic': new THREE.MeshPhongMaterial( { specular: 0x888888, shininess: 250 } ),
|
|
'toon1': toonMaterial1,
|
|
'toon2': toonMaterial2,
|
|
'hatching': hatchingMaterial,
|
|
'dotted': dottedMaterial
|
|
};
|
|
|
|
return materials;
|
|
|
|
}
|
|
|
|
function createShaderMaterial( shader, light, ambientLight ) {
|
|
|
|
const u = THREE.UniformsUtils.clone( shader.uniforms );
|
|
|
|
const vs = shader.vertexShader;
|
|
const fs = shader.fragmentShader;
|
|
|
|
const material = new THREE.ShaderMaterial( { uniforms: u, vertexShader: vs, fragmentShader: fs } );
|
|
|
|
material.uniforms[ 'uDirLightPos' ].value = light.position;
|
|
material.uniforms[ 'uDirLightColor' ].value = light.color;
|
|
|
|
material.uniforms[ 'uAmbientLightColor' ].value = ambientLight.color;
|
|
|
|
return material;
|
|
|
|
}
|
|
|
|
//
|
|
|
|
function setupGui() {
|
|
|
|
const createHandler = function ( id ) {
|
|
|
|
return function () {
|
|
|
|
current_material = id;
|
|
|
|
effect.material = materials[ id ];
|
|
effect.enableUvs = ( current_material === 'textured' ) ? true : false;
|
|
effect.enableColors = ( current_material === 'colors' || current_material === 'multiColors' ) ? true : false;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
effectController = {
|
|
|
|
material: 'shiny',
|
|
|
|
speed: 1.0,
|
|
numBlobs: 10,
|
|
resolution: 28,
|
|
isolation: 80,
|
|
|
|
floor: true,
|
|
wallx: false,
|
|
wallz: false,
|
|
|
|
dummy: function () {}
|
|
|
|
};
|
|
|
|
let h;
|
|
|
|
const gui = new GUI();
|
|
|
|
// material (type)
|
|
|
|
h = gui.addFolder( 'Materials' );
|
|
|
|
for ( const m in materials ) {
|
|
|
|
effectController[ m ] = createHandler( m );
|
|
h.add( effectController, m ).name( m );
|
|
|
|
}
|
|
|
|
// simulation
|
|
|
|
h = gui.addFolder( 'Simulation' );
|
|
|
|
h.add( effectController, 'speed', 0.1, 8.0, 0.05 );
|
|
h.add( effectController, 'numBlobs', 1, 50, 1 );
|
|
h.add( effectController, 'resolution', 14, 100, 1 );
|
|
h.add( effectController, 'isolation', 10, 300, 1 );
|
|
|
|
h.add( effectController, 'floor' );
|
|
h.add( effectController, 'wallx' );
|
|
h.add( effectController, 'wallz' );
|
|
|
|
}
|
|
|
|
// this controls content of marching cubes voxel field
|
|
|
|
function updateCubes( object, time, numblobs, floor, wallx, wallz ) {
|
|
|
|
object.reset();
|
|
|
|
// fill the field with some metaballs
|
|
|
|
const rainbow = [
|
|
new THREE.Color( 0xff0000 ),
|
|
new THREE.Color( 0xff7f00 ),
|
|
new THREE.Color( 0xffff00 ),
|
|
new THREE.Color( 0x00ff00 ),
|
|
new THREE.Color( 0x0000ff ),
|
|
new THREE.Color( 0x4b0082 ),
|
|
new THREE.Color( 0x9400d3 )
|
|
];
|
|
const subtract = 12;
|
|
const strength = 1.2 / ( ( Math.sqrt( numblobs ) - 1 ) / 4 + 1 );
|
|
|
|
for ( let i = 0; i < numblobs; i ++ ) {
|
|
|
|
const ballx = Math.sin( i + 1.26 * time * ( 1.03 + 0.5 * Math.cos( 0.21 * i ) ) ) * 0.27 + 0.5;
|
|
const bally = Math.abs( Math.cos( i + 1.12 * time * Math.cos( 1.22 + 0.1424 * i ) ) ) * 0.77; // dip into the floor
|
|
const ballz = Math.cos( i + 1.32 * time * 0.1 * Math.sin( ( 0.92 + 0.53 * i ) ) ) * 0.27 + 0.5;
|
|
|
|
if ( current_material === 'multiColors' ) {
|
|
|
|
object.addBall( ballx, bally, ballz, strength, subtract, rainbow[ i % 7 ] );
|
|
|
|
} else {
|
|
|
|
object.addBall( ballx, bally, ballz, strength, subtract );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if ( floor ) object.addPlaneY( 2, 12 );
|
|
if ( wallz ) object.addPlaneZ( 2, 12 );
|
|
if ( wallx ) object.addPlaneX( 2, 12 );
|
|
|
|
object.update();
|
|
|
|
}
|
|
|
|
//
|
|
|
|
function animate() {
|
|
|
|
requestAnimationFrame( animate );
|
|
|
|
render();
|
|
stats.update();
|
|
|
|
}
|
|
|
|
function render() {
|
|
|
|
const delta = clock.getDelta();
|
|
|
|
time += delta * effectController.speed * 0.5;
|
|
|
|
// marching cubes
|
|
|
|
if ( effectController.resolution !== resolution ) {
|
|
|
|
resolution = effectController.resolution;
|
|
effect.init( Math.floor( resolution ) );
|
|
|
|
}
|
|
|
|
if ( effectController.isolation !== effect.isolation ) {
|
|
|
|
effect.isolation = effectController.isolation;
|
|
|
|
}
|
|
|
|
updateCubes( effect, time, effectController.numBlobs, effectController.floor, effectController.wallx, effectController.wallz );
|
|
|
|
// render
|
|
|
|
renderer.render( scene, camera );
|
|
|
|
}
|
|
|
|
</script>
|
|
|
|
</body>
|
|
</html>
|
|
|