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.
188 lines
4.9 KiB
188 lines
4.9 KiB
3 years ago
|
<!-- Licensed under a BSD license. See license.html for license -->
|
||
|
|
<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta charset="utf-8">
|
||
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
|
||
|
|
<title>Three.js - Multiple Scenes - Generic</title>
|
||
|
|
<style>
|
||
|
|
#c {
|
||
|
|
position: absolute;
|
||
|
|
left: 0;
|
||
|
|
top: 0;
|
||
|
|
width: 100%;
|
||
|
|
height: 100%;
|
||
|
|
display: block;
|
||
|
|
z-index: -1;
|
||
|
|
}
|
||
|
|
.diagram {
|
||
|
|
display: inline-block;
|
||
|
|
width: 5em;
|
||
|
|
height: 3em;
|
||
|
|
}
|
||
|
|
.left {
|
||
|
|
float: left;
|
||
|
|
margin-right: .25em;
|
||
|
|
}
|
||
|
|
.right {
|
||
|
|
float: right;
|
||
|
|
margin-left: .25em;
|
||
|
|
}
|
||
|
|
p {
|
||
|
|
margin: 1em auto;
|
||
|
|
max-width: 500px;
|
||
|
|
font-size: xx-large;
|
||
|
|
}
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<canvas id="c"></canvas>
|
||
|
|
<p>
|
||
|
|
<span id="box" class="diagram left"></span>
|
||
|
|
I love boxes. Presents come in boxes.
|
||
|
|
When I find a new box I'm always excited to find out what's inside.
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<span id="pyramid" class="diagram right"></span>
|
||
|
|
When I was a kid I dreamed of going on an expedition inside a pyramid
|
||
|
|
and finding a undiscovered tomb full of mummies and treasure.
|
||
|
|
</p>
|
||
|
|
</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"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<script type="module">
|
||
|
|
import * as THREE from 'three';
|
||
|
|
|
||
|
|
function main() {
|
||
|
|
const canvas = document.querySelector('#c');
|
||
|
|
const renderer = new THREE.WebGLRenderer({canvas, alpha: true});
|
||
|
|
|
||
|
|
const sceneElements = [];
|
||
|
|
function addScene(elem, fn) {
|
||
|
|
sceneElements.push({elem, fn});
|
||
|
|
}
|
||
|
|
|
||
|
|
function makeScene() {
|
||
|
|
const scene = new THREE.Scene();
|
||
|
|
|
||
|
|
const fov = 45;
|
||
|
|
const aspect = 2; // the canvas default
|
||
|
|
const near = 0.1;
|
||
|
|
const far = 5;
|
||
|
|
const camera = new THREE.PerspectiveCamera(fov, aspect, near, far);
|
||
|
|
camera.position.set(0, 1, 2);
|
||
|
|
camera.lookAt(0, 0, 0);
|
||
|
|
|
||
|
|
{
|
||
|
|
const color = 0xFFFFFF;
|
||
|
|
const intensity = 1;
|
||
|
|
const light = new THREE.DirectionalLight(color, intensity);
|
||
|
|
light.position.set(-1, 2, 4);
|
||
|
|
scene.add(light);
|
||
|
|
}
|
||
|
|
|
||
|
|
return {scene, camera};
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
const elem = document.querySelector('#box');
|
||
|
|
const {scene, camera} = makeScene();
|
||
|
|
const geometry = new THREE.BoxGeometry(1, 1, 1);
|
||
|
|
const material = new THREE.MeshPhongMaterial({color: 'red'});
|
||
|
|
const mesh = new THREE.Mesh(geometry, material);
|
||
|
|
scene.add(mesh);
|
||
|
|
addScene(elem, (time, rect) => {
|
||
|
|
camera.aspect = rect.width / rect.height;
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
mesh.rotation.y = time * .1;
|
||
|
|
renderer.render(scene, camera);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
const elem = document.querySelector('#pyramid');
|
||
|
|
const {scene, camera} = makeScene();
|
||
|
|
const radius = .8;
|
||
|
|
const widthSegments = 4;
|
||
|
|
const heightSegments = 2;
|
||
|
|
const geometry = new THREE.SphereGeometry(radius, widthSegments, heightSegments);
|
||
|
|
const material = new THREE.MeshPhongMaterial({
|
||
|
|
color: 'blue',
|
||
|
|
flatShading: true,
|
||
|
|
});
|
||
|
|
const mesh = new THREE.Mesh(geometry, material);
|
||
|
|
scene.add(mesh);
|
||
|
|
addScene(elem, (time, rect) => {
|
||
|
|
camera.aspect = rect.width / rect.height;
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
mesh.rotation.y = time * .1;
|
||
|
|
renderer.render(scene, camera);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function resizeRendererToDisplaySize(renderer) {
|
||
|
|
const canvas = renderer.domElement;
|
||
|
|
const width = canvas.clientWidth;
|
||
|
|
const height = canvas.clientHeight;
|
||
|
|
const needResize = canvas.width !== width || canvas.height !== height;
|
||
|
|
if (needResize) {
|
||
|
|
renderer.setSize(width, height, false);
|
||
|
|
}
|
||
|
|
return needResize;
|
||
|
|
}
|
||
|
|
|
||
|
|
const clearColor = new THREE.Color('#000');
|
||
|
|
function render(time) {
|
||
|
|
time *= 0.001;
|
||
|
|
|
||
|
|
resizeRendererToDisplaySize(renderer);
|
||
|
|
|
||
|
|
renderer.setScissorTest(false);
|
||
|
|
renderer.setClearColor(clearColor, 0);
|
||
|
|
renderer.clear(true, true);
|
||
|
|
renderer.setScissorTest(true);
|
||
|
|
|
||
|
|
const transform = `translateY(${window.scrollY}px)`;
|
||
|
|
renderer.domElement.style.transform = transform;
|
||
|
|
|
||
|
|
for (const {elem, fn} of sceneElements) {
|
||
|
|
// get the viewport relative position of this element
|
||
|
|
const rect = elem.getBoundingClientRect();
|
||
|
|
const {left, right, top, bottom, width, height} = rect;
|
||
|
|
|
||
|
|
const isOffscreen =
|
||
|
|
bottom < 0 ||
|
||
|
|
top > renderer.domElement.clientHeight ||
|
||
|
|
right < 0 ||
|
||
|
|
left > renderer.domElement.clientWidth;
|
||
|
|
|
||
|
|
if (!isOffscreen) {
|
||
|
|
const positiveYUpBottom = renderer.domElement.clientHeight - bottom;
|
||
|
|
renderer.setScissor(left, positiveYUpBottom, width, height);
|
||
|
|
renderer.setViewport(left, positiveYUpBottom, width, height);
|
||
|
|
|
||
|
|
fn(time, rect);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
requestAnimationFrame(render);
|
||
|
|
}
|
||
|
|
|
||
|
|
requestAnimationFrame(render);
|
||
|
|
}
|
||
|
|
|
||
|
|
main();
|
||
|
|
</script>
|
||
|
|
</html>
|
||
|
|
|