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.
144 lines
3.8 KiB
144 lines
3.8 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 - Voxel Geometry - Separate Cubes</title>
|
||
|
|
<style>
|
||
|
|
html, body {
|
||
|
|
height: 100%;
|
||
|
|
margin: 0;
|
||
|
|
}
|
||
|
|
#c {
|
||
|
|
width: 100%;
|
||
|
|
height: 100%;
|
||
|
|
display: block;
|
||
|
|
}
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<canvas id="c"></canvas>
|
||
|
|
</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/": "../../examples/jsm/"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<script type="module">
|
||
|
|
import * as THREE from 'three';
|
||
|
|
import {OrbitControls} from 'three/addons/controls/OrbitControls.js';
|
||
|
|
|
||
|
|
function main() {
|
||
|
|
const canvas = document.querySelector('#c');
|
||
|
|
const renderer = new THREE.WebGLRenderer({canvas});
|
||
|
|
|
||
|
|
const cellSize = 256;
|
||
|
|
|
||
|
|
const fov = 75;
|
||
|
|
const aspect = 2; // the canvas default
|
||
|
|
const near = 0.1;
|
||
|
|
const far = 1000;
|
||
|
|
const camera = new THREE.PerspectiveCamera(fov, aspect, near, far);
|
||
|
|
camera.position.set(-cellSize * .3, cellSize * .8, -cellSize * .3);
|
||
|
|
|
||
|
|
const controls = new OrbitControls(camera, canvas);
|
||
|
|
controls.target.set(cellSize / 2, cellSize / 3, cellSize / 2);
|
||
|
|
controls.update();
|
||
|
|
|
||
|
|
const scene = new THREE.Scene();
|
||
|
|
scene.background = new THREE.Color('lightblue');
|
||
|
|
|
||
|
|
{
|
||
|
|
const color = 0xFFFFFF;
|
||
|
|
const intensity = 1;
|
||
|
|
const light = new THREE.DirectionalLight(color, intensity);
|
||
|
|
light.position.set(-1, 2, 4);
|
||
|
|
scene.add(light);
|
||
|
|
}
|
||
|
|
|
||
|
|
const cell = new Uint8Array(cellSize * cellSize * cellSize);
|
||
|
|
for (let y = 0; y < cellSize; ++y) {
|
||
|
|
for (let z = 0; z < cellSize; ++z) {
|
||
|
|
for (let x = 0; x < cellSize; ++x) {
|
||
|
|
const height = (Math.sin(x / cellSize * Math.PI * 4) + Math.sin(z / cellSize * Math.PI * 6)) * 20 + cellSize / 2;
|
||
|
|
if (height > y && height < y + 1) {
|
||
|
|
const offset = y * cellSize * cellSize +
|
||
|
|
z * cellSize +
|
||
|
|
x;
|
||
|
|
cell[offset] = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const geometry = new THREE.BoxGeometry(1, 1, 1);
|
||
|
|
const material = new THREE.MeshPhongMaterial({color: 'green'});
|
||
|
|
|
||
|
|
for (let y = 0; y < cellSize; ++y) {
|
||
|
|
for (let z = 0; z < cellSize; ++z) {
|
||
|
|
for (let x = 0; x < cellSize; ++x) {
|
||
|
|
const offset = y * cellSize * cellSize +
|
||
|
|
z * cellSize +
|
||
|
|
x;
|
||
|
|
const block = cell[offset];
|
||
|
|
if (block) {
|
||
|
|
const mesh = new THREE.Mesh(geometry, material);
|
||
|
|
mesh.position.set(x, y, z);
|
||
|
|
scene.add(mesh);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
let renderRequested = false;
|
||
|
|
|
||
|
|
function render() {
|
||
|
|
renderRequested = undefined;
|
||
|
|
|
||
|
|
if (resizeRendererToDisplaySize(renderer)) {
|
||
|
|
const canvas = renderer.domElement;
|
||
|
|
camera.aspect = canvas.clientWidth / canvas.clientHeight;
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
}
|
||
|
|
|
||
|
|
controls.update();
|
||
|
|
renderer.render(scene, camera);
|
||
|
|
}
|
||
|
|
render();
|
||
|
|
|
||
|
|
function requestRenderIfNotRequested() {
|
||
|
|
if (!renderRequested) {
|
||
|
|
renderRequested = true;
|
||
|
|
requestAnimationFrame(render);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
controls.addEventListener('change', requestRenderIfNotRequested);
|
||
|
|
window.addEventListener('resize', requestRenderIfNotRequested);
|
||
|
|
}
|
||
|
|
|
||
|
|
main();
|
||
|
|
</script>
|
||
|
|
</html>
|
||
|
|
|