javascript
/
three.js
огледало од https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - geometry - minecraft - ao</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">
		<style>
			body {
				background-color: #fff;
				color: #61443e;
			}
			a {
				color: #a06851;
			}
		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - <a href="http://www.minecraft.net/" target="_blank" rel="noopener">minecraft</a> demo [ambient occlusion]. featuring <a href="http://painterlypack.net/" target="_blank" rel="noopener">painterly pack</a><br />(left click: forward, right click: backward)
		</div>

		<script type="module">

			import * as THREE from '../build/three.module.js';

			import Stats from './jsm/libs/stats.module.js';

			import { FirstPersonControls } from './jsm/controls/FirstPersonControls.js';
			import { ImprovedNoise } from './jsm/math/ImprovedNoise.js';
			import { BufferGeometryUtils } from './jsm/utils/BufferGeometryUtils.js';

			let container, stats;

			let camera, controls, scene, renderer;

			const worldWidth = 200, worldDepth = 200;
			const worldHalfWidth = worldWidth / 2;
			const worldHalfDepth = worldDepth / 2;
			const data = generateHeight( worldWidth, worldDepth );

			const clock = new THREE.Clock();

			init();
			animate();

			function init() {

				container = document.getElementById( 'container' );

				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 20000 );
				camera.position.y = getY( worldHalfWidth, worldHalfDepth ) * 100 + 100;

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0xffffff );
				scene.fog = new THREE.FogExp2( 0xffffff, 0.00015 );

				// sides

				const light = new THREE.Color( 0xffffff );
				const shadow = new THREE.Color( 0x505050 );

				const matrix = new THREE.Matrix4();

				const pxGeometry = new THREE.PlaneGeometry( 100, 100 ).toNonIndexed();
				pxGeometry.setAttribute( 'color', pxGeometry.attributes.position.clone() );
				pxGeometry.attributes.color.copyColorsArray( [ light, shadow, light, shadow, shadow, light ] );
				pxGeometry.attributes.uv.array[ 1 ] = 0.5;
				pxGeometry.attributes.uv.array[ 5 ] = 0.5;
				pxGeometry.attributes.uv.array[ 11 ] = 0.5;
				pxGeometry.rotateY( Math.PI / 2 );
				pxGeometry.translate( 50, 0, 0 );

				const nxGeometry = new THREE.PlaneGeometry( 100, 100 ).toNonIndexed();
				nxGeometry.setAttribute( 'color', nxGeometry.attributes.position.clone() );
				nxGeometry.attributes.color.copyColorsArray( [ light, shadow, light, shadow, shadow, light ] );
				nxGeometry.attributes.uv.array[ 1 ] = 0.5;
				nxGeometry.attributes.uv.array[ 5 ] = 0.5;
				nxGeometry.attributes.uv.array[ 11 ] = 0.5;
				nxGeometry.rotateY( - Math.PI / 2 );
				nxGeometry.translate( - 50, 0, 0 );

				const pyGeometry = new THREE.PlaneGeometry( 100, 100 ).toNonIndexed();
				pyGeometry.setAttribute( 'color', pyGeometry.attributes.position.clone() );
				pyGeometry.attributes.color.copyColorsArray( [ light, light, light, light, light, light ] );
				pyGeometry.attributes.uv.array[ 3 ] = 0.5;
				pyGeometry.attributes.uv.array[ 7 ] = 0.5;
				pyGeometry.attributes.uv.array[ 9 ] = 0.5;
				pyGeometry.rotateX( - Math.PI / 2 );
				pyGeometry.translate( 0, 50, 0 );

				const py2Geometry = new THREE.PlaneGeometry( 100, 100 ).toNonIndexed();
				py2Geometry.setAttribute( 'color', py2Geometry.attributes.position.clone() );
				py2Geometry.attributes.color.copyColorsArray( [ light, light, light, light, light, light ] );
				py2Geometry.attributes.uv.array[ 3 ] = 0.5;
				py2Geometry.attributes.uv.array[ 7 ] = 0.5;
				py2Geometry.attributes.uv.array[ 9 ] = 0.5;
				py2Geometry.rotateX( - Math.PI / 2 );
				py2Geometry.rotateY( Math.PI / 2 );
				py2Geometry.translate( 0, 50, 0 );

				const pzGeometry = new THREE.PlaneGeometry( 100, 100 ).toNonIndexed();
				pzGeometry.setAttribute( 'color', pzGeometry.attributes.position.clone() );
				pzGeometry.attributes.color.copyColorsArray( [ light, shadow, light, shadow, shadow, light ] );
				pzGeometry.attributes.uv.array[ 1 ] = 0.5;
				pzGeometry.attributes.uv.array[ 5 ] = 0.5;
				pzGeometry.attributes.uv.array[ 11 ] = 0.5;
				pzGeometry.translate( 0, 0, 50 );

				const nzGeometry = new THREE.PlaneGeometry( 100, 100 ).toNonIndexed();
				nzGeometry.setAttribute( 'color', nzGeometry.attributes.position.clone() );
				nzGeometry.attributes.color.copyColorsArray( [ light, shadow, light, shadow, shadow, light ] );
				nzGeometry.attributes.uv.array[ 1 ] = 0.5;
				nzGeometry.attributes.uv.array[ 5 ] = 0.5;
				nzGeometry.attributes.uv.array[ 11 ] = 0.5;
				nzGeometry.rotateY( Math.PI );
				nzGeometry.translate( 0, 0, - 50 );

				//

				const geometries = [];

				for ( let z = 0; z < worldDepth; z ++ ) {

					for ( let x = 0; x < worldWidth; x ++ ) {

						const h = getY( x, z );

						matrix.makeTranslation(
							x * 100 - worldHalfWidth * 100,
							h * 100,
							z * 100 - worldHalfDepth * 100
						);

						const px = getY( x + 1, z );
						const nx = getY( x - 1, z );
						const pz = getY( x, z + 1 );
						const nz = getY( x, z - 1 );

						const pxpz = getY( x + 1, z + 1 );
						const nxpz = getY( x - 1, z + 1 );
						const pxnz = getY( x + 1, z - 1 );
						const nxnz = getY( x - 1, z - 1 );

						const a = nx > h || nz > h || nxnz > h ? 0 : 1;
						const b = nx > h || pz > h || nxpz > h ? 0 : 1;
						const c = px > h || pz > h || pxpz > h ? 0 : 1;
						const d = px > h || nz > h || pxnz > h ? 0 : 1;

						if ( a + c > b + d ) {

							const colors = [];

							colors[ 0 ] = b === 0 ? shadow : light;
							colors[ 1 ] = c === 0 ? shadow : light;
							colors[ 2 ] = a === 0 ? shadow : light;
							colors[ 3 ] = c === 0 ? shadow : light;
							colors[ 4 ] = d === 0 ? shadow : light;
							colors[ 5 ] = a === 0 ? shadow : light;

							py2Geometry.attributes.color.copyColorsArray( colors );
							geometries.push( py2Geometry.clone().applyMatrix4( matrix ) );

						} else {

							const colors = [];

							colors[ 0 ] = a === 0 ? shadow : light;
							colors[ 1 ] = b === 0 ? shadow : light;
							colors[ 2 ] = d === 0 ? shadow : light;
							colors[ 3 ] = b === 0 ? shadow : light;
							colors[ 4 ] = c === 0 ? shadow : light;
							colors[ 5 ] = d === 0 ? shadow : light;

							pyGeometry.attributes.color.copyColorsArray( colors );
							geometries.push( pyGeometry.clone().applyMatrix4( matrix ) );

						}

						if ( ( px != h && px != h + 1 ) || x == 0 ) {

							const colors = [];

							colors[ 0 ] = pxpz > px && x > 0 ? shadow : light;
							colors[ 1 ] = shadow;
							colors[ 2 ] = pxnz > px && x > 0 ? shadow : light;
							colors[ 3 ] = shadow;
							colors[ 4 ] = shadow;
							colors[ 5 ] = pxnz > px && x > 0 ? shadow : light;

							pxGeometry.attributes.color.copyColorsArray( colors );
							geometries.push( pxGeometry.clone().applyMatrix4( matrix ) );

						}

						if ( ( nx != h && nx != h + 1 ) || x == worldWidth - 1 ) {

							const colors = [];

							colors[ 0 ] = nxnz > nx && x < worldWidth - 1 ? shadow : light;
							colors[ 1 ] = shadow;
							colors[ 2 ] = nxpz > nx && x < worldWidth - 1 ? shadow : light;
							colors[ 3 ] = shadow;
							colors[ 4 ] = shadow;
							colors[ 5 ] = nxpz > nx && x < worldWidth - 1 ? shadow : light;

							nxGeometry.attributes.color.copyColorsArray( colors );
							geometries.push( nxGeometry.clone().applyMatrix4( matrix ) );

						}

						if ( ( pz != h && pz != h + 1 ) || z == worldDepth - 1 ) {

							const colors = [];

							colors[ 0 ] = nxpz > pz && z < worldDepth - 1 ? shadow : light;
							colors[ 1 ] = shadow;
							colors[ 2 ] = pxpz > pz && z < worldDepth - 1 ? shadow : light;
							colors[ 3 ] = shadow;
							colors[ 4 ] = shadow;
							colors[ 5 ] = pxpz > pz && z < worldDepth - 1 ? shadow : light;

							pzGeometry.attributes.color.copyColorsArray( colors );
							geometries.push( pzGeometry.clone().applyMatrix4( matrix ) );

						}

						if ( ( nz != h && nz != h + 1 ) || z == 0 ) {

							const colors = [];

							colors[ 0 ] = pxnz > nz && z > 0 ? shadow : light;
							colors[ 1 ] = shadow;
							colors[ 2 ] = nxnz > nz && z > 0 ? shadow : light;
							colors[ 3 ] = shadow;
							colors[ 4 ] = shadow;
							colors[ 5 ] = nxnz > nz && z > 0 ? shadow : light;

							nzGeometry.attributes.color.copyColorsArray( colors );
							geometries.push( nzGeometry.clone().applyMatrix4( matrix ) );

						}

					}

				}

				const geometry = BufferGeometryUtils.mergeBufferGeometries( geometries );
				geometry.computeBoundingSphere();

				const texture = new THREE.TextureLoader().load( 'textures/minecraft/atlas.png' );
				texture.magFilter = THREE.NearestFilter;

				const mesh = new THREE.Mesh(
					geometry,
					new THREE.MeshLambertMaterial( { map: texture, vertexColors: true, side: THREE.DoubleSide } )
				);
				scene.add( mesh );

				const ambientLight = new THREE.AmbientLight( 0xcccccc );
				scene.add( ambientLight );

				const directionalLight = new THREE.DirectionalLight( 0xffffff, 2 );
				directionalLight.position.set( 1, 1, 0.5 ).normalize();
				scene.add( directionalLight );

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				controls = new FirstPersonControls( camera, renderer.domElement );

				controls.movementSpeed = 1000;
				controls.lookSpeed = 0.125;
				controls.lookVertical = true;
				controls.constrainVertical = true;
				controls.verticalMin = 1.1;
				controls.verticalMax = 2.2;

				stats = new Stats();
				container.appendChild( stats.dom );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

				controls.handleResize();

			}

			function generateHeight( width, height ) {

				const data = [], perlin = new ImprovedNoise(),
					size = width * height, z = Math.random() * 100;

				let quality = 2;

				for ( let j = 0; j < 4; j ++ ) {

					if ( j == 0 ) for ( let i = 0; i < size; i ++ ) data[ i ] = 0;

					for ( let i = 0; i < size; i ++ ) {

						const x = i % width, y = ( i / width ) | 0;
						data[ i ] += perlin.noise( x / quality, y / quality, z ) * quality;

					}

					quality *= 4;

				}

				return data;

			}

			function getY( x, z ) {

				return ( data[ x + z * worldWidth ] * 0.2 ) | 0;

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				controls.update( clock.getDelta() );
				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>