Three.JS Cubes

Three.JS Cubes.carbide.md

Three.JS Cubes

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cell2.js

import THREE from 'https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.js'

var container;

var camera, scene, renderer;

var geometry, group;

var mouseX = 0, mouseY = 0;

var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;

document.addEventListener( 'mousemove', onDocumentMouseMove, false );

init();
animate();

function init() {

    container = document.createElement( 'div' );
    document.body.appendChild( container );

    camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
    camera.position.z = 500;

    scene = new THREE.Scene();
    scene.fog = new THREE.Fog( 0xffffff, 1, 10000 );

    var geometry = new THREE.BoxGeometry( 100, 100, 100 );
    var material = new THREE.MeshNormalMaterial();

    group = new THREE.Group();

    for ( var i = 0; i < 1000; i ++ ) {

        var mesh = new THREE.Mesh( geometry, material );
        mesh.position.x = Math.random() * 2000 - 1000;
        mesh.position.y = Math.random() * 2000 - 1000;
        mesh.position.z = Math.random() * 2000 - 1000;

        mesh.rotation.x = Math.random() * 2 * Math.PI;
        mesh.rotation.y = Math.random() * 2 * Math.PI;

        mesh.matrixAutoUpdate = false;
        mesh.updateMatrix();

        group.add( mesh );

    }

    scene.add( group );

    renderer = new THREE.WebGLRenderer();
    renderer.setClearColor( 0xffffff );
    renderer.setPixelRatio( window.devicePixelRatio );
    renderer.setSize( window.innerWidth, window.innerHeight );
    renderer.sortObjects = false;

    container.appendChild( renderer.domElement );

//

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

}

function onWindowResize() {

    windowHalfX = window.innerWidth / 2;
    windowHalfY = window.innerHeight / 2;

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

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

}

function onDocumentMouseMove(event) {

    mouseX = ( event.clientX - windowHalfX ) * 10;
    mouseY = ( event.clientY - windowHalfY ) * 10;

}

//

function animate() {

    requestAnimationFrame( animate );

    render();
    
}

function render() {

    var time = Date.now() * 0.001;

    var rx = Math.sin( time * 0.7 ) * 0.5,
        ry = Math.sin( time * 0.3 ) * 0.5,
        rz = Math.sin( time * 0.2 ) * 0.5;

    camera.position.x += ( mouseX - camera.position.x ) * .05;
    camera.position.y += ( - mouseY - camera.position.y ) * .05;

    camera.lookAt( scene.position );

    group.rotation.x = rx;
    group.rotation.y = ry;
    group.rotation.z = rz;

    renderer.render( scene, camera );

}