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.
258 lines
6.8 KiB
258 lines
6.8 KiB
3 years ago
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>three.js webgl - materials - custom blending</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>
|
||
|
|
|
||
|
|
<!-- 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';
|
||
|
|
|
||
|
|
let camera, scene, renderer;
|
||
|
|
|
||
|
|
let mapBg;
|
||
|
|
const materials = [];
|
||
|
|
|
||
|
|
const params = {
|
||
|
|
blendEquation: THREE.AddEquation
|
||
|
|
};
|
||
|
|
|
||
|
|
const equations = { Add: THREE.AddEquation, Subtract: THREE.SubtractEquation, ReverseSubtract: THREE.ReverseSubtractEquation, Min: THREE.MinEquation, Max: THREE.MaxEquation };
|
||
|
|
|
||
|
|
init();
|
||
|
|
animate();
|
||
|
|
|
||
|
|
function init() {
|
||
|
|
|
||
|
|
// CAMERA
|
||
|
|
|
||
|
|
camera = new THREE.PerspectiveCamera( 80, window.innerWidth / window.innerHeight, 1, 1000 );
|
||
|
|
camera.position.z = 700;
|
||
|
|
|
||
|
|
// SCENE
|
||
|
|
|
||
|
|
scene = new THREE.Scene();
|
||
|
|
|
||
|
|
// BACKGROUND
|
||
|
|
|
||
|
|
const canvas = document.createElement( 'canvas' );
|
||
|
|
const ctx = canvas.getContext( '2d' );
|
||
|
|
canvas.width = canvas.height = 128;
|
||
|
|
ctx.fillStyle = '#ddd';
|
||
|
|
ctx.fillRect( 0, 0, 128, 128 );
|
||
|
|
ctx.fillStyle = '#555';
|
||
|
|
ctx.fillRect( 0, 0, 64, 64 );
|
||
|
|
ctx.fillStyle = '#999';
|
||
|
|
ctx.fillRect( 32, 32, 32, 32 );
|
||
|
|
ctx.fillStyle = '#555';
|
||
|
|
ctx.fillRect( 64, 64, 64, 64 );
|
||
|
|
ctx.fillStyle = '#777';
|
||
|
|
ctx.fillRect( 96, 96, 32, 32 );
|
||
|
|
|
||
|
|
mapBg = new THREE.CanvasTexture( canvas );
|
||
|
|
mapBg.wrapS = mapBg.wrapT = THREE.RepeatWrapping;
|
||
|
|
mapBg.repeat.set( 64, 32 );
|
||
|
|
|
||
|
|
scene.background = mapBg;
|
||
|
|
|
||
|
|
// FOREGROUND OBJECTS
|
||
|
|
|
||
|
|
const src = [
|
||
|
|
{ name: 'Zero', constant: THREE.ZeroFactor },
|
||
|
|
{ name: 'One', constant: THREE.OneFactor },
|
||
|
|
{ name: 'SrcColor', constant: THREE.SrcColorFactor },
|
||
|
|
{ name: 'OneMinusSrcColor', constant: THREE.OneMinusSrcColorFactor },
|
||
|
|
{ name: 'SrcAlpha', constant: THREE.SrcAlphaFactor },
|
||
|
|
{ name: 'OneMinusSrcAlpha', constant: THREE.OneMinusSrcAlphaFactor },
|
||
|
|
{ name: 'DstAlpha', constant: THREE.DstAlphaFactor },
|
||
|
|
{ name: 'OneMinusDstAlpha', constant: THREE.OneMinusDstAlphaFactor },
|
||
|
|
{ name: 'DstColor', constant: THREE.DstColorFactor },
|
||
|
|
{ name: 'OneMinusDstColor', constant: THREE.OneMinusDstColorFactor },
|
||
|
|
{ name: 'SrcAlphaSaturate', constant: THREE.SrcAlphaSaturateFactor }
|
||
|
|
];
|
||
|
|
|
||
|
|
const dst = [
|
||
|
|
{ name: 'Zero', constant: THREE.ZeroFactor },
|
||
|
|
{ name: 'One', constant: THREE.OneFactor },
|
||
|
|
{ name: 'SrcColor', constant: THREE.SrcColorFactor },
|
||
|
|
{ name: 'OneMinusSrcColor', constant: THREE.OneMinusSrcColorFactor },
|
||
|
|
{ name: 'SrcAlpha', constant: THREE.SrcAlphaFactor },
|
||
|
|
{ name: 'OneMinusSrcAlpha', constant: THREE.OneMinusSrcAlphaFactor },
|
||
|
|
{ name: 'DstAlpha', constant: THREE.DstAlphaFactor },
|
||
|
|
{ name: 'OneMinusDstAlpha', constant: THREE.OneMinusDstAlphaFactor },
|
||
|
|
{ name: 'DstColor', constant: THREE.DstColorFactor },
|
||
|
|
{ name: 'OneMinusDstColor', constant: THREE.OneMinusDstColorFactor }
|
||
|
|
];
|
||
|
|
|
||
|
|
const geo1 = new THREE.PlaneGeometry( 100, 100 );
|
||
|
|
const geo2 = new THREE.PlaneGeometry( 100, 25 );
|
||
|
|
|
||
|
|
const texture = new THREE.TextureLoader().load( 'textures/lensflare/lensflare0_alpha.png' );
|
||
|
|
|
||
|
|
for ( let i = 0; i < dst.length; i ++ ) {
|
||
|
|
|
||
|
|
const blendDst = dst[ i ];
|
||
|
|
|
||
|
|
for ( let j = 0; j < src.length; j ++ ) {
|
||
|
|
|
||
|
|
const blendSrc = src[ j ];
|
||
|
|
|
||
|
|
const material = new THREE.MeshBasicMaterial( { map: texture } );
|
||
|
|
material.transparent = true;
|
||
|
|
|
||
|
|
material.blending = THREE.CustomBlending;
|
||
|
|
material.blendSrc = blendSrc.constant;
|
||
|
|
material.blendDst = blendDst.constant;
|
||
|
|
material.blendEquation = THREE.AddEquation;
|
||
|
|
|
||
|
|
const x = ( j - src.length / 2 ) * 110;
|
||
|
|
const z = 0;
|
||
|
|
const y = ( i - dst.length / 2 ) * 110 + 50;
|
||
|
|
|
||
|
|
const mesh = new THREE.Mesh( geo1, material );
|
||
|
|
mesh.position.set( x, - y, z );
|
||
|
|
mesh.matrixAutoUpdate = false;
|
||
|
|
mesh.updateMatrix();
|
||
|
|
scene.add( mesh );
|
||
|
|
|
||
|
|
materials.push( material );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
for ( let j = 0; j < src.length; j ++ ) {
|
||
|
|
|
||
|
|
const blendSrc = src[ j ];
|
||
|
|
|
||
|
|
const x = ( j - src.length / 2 ) * 110;
|
||
|
|
const z = 0;
|
||
|
|
const y = ( 0 - dst.length / 2 ) * 110 + 50;
|
||
|
|
|
||
|
|
const mesh = new THREE.Mesh( geo2, generateLabelMaterial( blendSrc.name, 'rgba( 0, 150, 0, 1 )' ) );
|
||
|
|
mesh.position.set( x, - ( y - 70 ), z );
|
||
|
|
mesh.matrixAutoUpdate = false;
|
||
|
|
mesh.updateMatrix();
|
||
|
|
scene.add( mesh );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
for ( let i = 0; i < dst.length; i ++ ) {
|
||
|
|
|
||
|
|
const blendDst = dst[ i ];
|
||
|
|
|
||
|
|
const x = ( 0 - src.length / 2 ) * 110 - 125;
|
||
|
|
const z = 0;
|
||
|
|
const y = ( i - dst.length / 2 ) * 110 + 165;
|
||
|
|
|
||
|
|
const mesh = new THREE.Mesh( geo2, generateLabelMaterial( blendDst.name, 'rgba( 150, 0, 0, 1 )' ) );
|
||
|
|
mesh.position.set( x, - ( y - 120 ), z );
|
||
|
|
mesh.matrixAutoUpdate = false;
|
||
|
|
mesh.updateMatrix();
|
||
|
|
scene.add( mesh );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
// RENDERER
|
||
|
|
|
||
|
|
renderer = new THREE.WebGLRenderer();
|
||
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
||
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
||
|
|
document.body.appendChild( renderer.domElement );
|
||
|
|
|
||
|
|
// EVENTS
|
||
|
|
|
||
|
|
window.addEventListener( 'resize', onWindowResize );
|
||
|
|
|
||
|
|
// GUI
|
||
|
|
|
||
|
|
//
|
||
|
|
const gui = new GUI( { width: 300 } );
|
||
|
|
|
||
|
|
gui.add( params, 'blendEquation', equations ).onChange( updateBlendEquation );
|
||
|
|
gui.open();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
function onWindowResize() {
|
||
|
|
|
||
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
||
|
|
|
||
|
|
camera.aspect = window.innerWidth / window.innerHeight;
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
function generateLabelMaterial( text, bg ) {
|
||
|
|
|
||
|
|
const canvas = document.createElement( 'canvas' );
|
||
|
|
const ctx = canvas.getContext( '2d' );
|
||
|
|
canvas.width = 128;
|
||
|
|
canvas.height = 32;
|
||
|
|
|
||
|
|
ctx.fillStyle = bg;
|
||
|
|
ctx.fillRect( 0, 0, 128, 32 );
|
||
|
|
|
||
|
|
ctx.fillStyle = 'white';
|
||
|
|
ctx.font = 'bold 11pt arial';
|
||
|
|
ctx.fillText( text, 8, 22 );
|
||
|
|
|
||
|
|
const map = new THREE.CanvasTexture( canvas );
|
||
|
|
|
||
|
|
const material = new THREE.MeshBasicMaterial( { map: map, transparent: true } );
|
||
|
|
return material;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function updateBlendEquation( value ) {
|
||
|
|
|
||
|
|
for ( const material of materials ) {
|
||
|
|
|
||
|
|
material.blendEquation = value;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function animate() {
|
||
|
|
|
||
|
|
requestAnimationFrame( animate );
|
||
|
|
|
||
|
|
const time = Date.now() * 0.00025;
|
||
|
|
const ox = ( time * - 0.01 * mapBg.repeat.x ) % 1;
|
||
|
|
const oy = ( time * - 0.01 * mapBg.repeat.y ) % 1;
|
||
|
|
|
||
|
|
mapBg.offset.set( ox, oy );
|
||
|
|
|
||
|
|
renderer.render( scene, camera );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|