[WebGL] Geometry Basic

이번 예제는 기본적인 Geometry에 대한 것입니다. 기본적인 Geometry라 함은, Three.js가 제공하는 Geometry Primitives를 의미합니다.

Download Project

02-01-geometry.zip

Click here to view with full screen mode

Operations

Mouse Left Button Click & Drag: Camera Rotating

Mouse Wheel: Camera Zoom In & Out

Mouse Right Button Click & Drag: Camera Panning

main.js

// MAIN
 
// standard global variables
var container, scene, camera, renderer, controls, stats;
var keyboard = new THREEx.KeyboardState();
var clock = new THREE.Clock();
 
// custom global variables
var mesh;
 
init();
animate();
 
// FUNCTIONS         
function init() 
{
    // SCENE
    scene = new THREE.Scene();
 
    // CAMERA
    var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight;
    var VIEW_ANGLE = 45, ASPECT = SCREEN_WIDTH / SCREEN_HEIGHT, NEAR = 0.1, FAR = 20000;
    camera = new THREE.PerspectiveCamera( VIEW_ANGLE, ASPECT, NEAR, FAR);
    scene.add(camera);
    camera.position.set(0,150,400);
    camera.lookAt(scene.position);
 
    // RENDERER
    if ( Detector.webgl )
        renderer = new THREE.WebGLRenderer( {antialias:true} );
    else
        renderer = new THREE.CanvasRenderer(); 
    renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
    container = document.getElementById( 'ThreeJS' );
    container.appendChild( renderer.domElement );
 
    // EVENTS
    THREEx.WindowResize(renderer, camera);
    THREEx.FullScreen.bindKey({ charCode : 'f'.charCodeAt(0) });
 
    // CONTROLS
    controls = new THREE.OrbitControls( camera, renderer.domElement );
 
    // STATS
    stats = new Stats();
    stats.domElement.style.position = 'absolute';
    stats.domElement.style.bottom = '0px';
    stats.domElement.style.zIndex = 100;
    //container.appendChild( stats.domElement );
 
    // LIGHT
    var light = new THREE.PointLight(0xffffff);
    light.position.set(100,250,100);
    scene.add(light);
 
    // FLOOR
    var floorTexture = new THREE.ImageUtils.loadTexture( 'img/Wood_floor.jpg' );
    floorTexture.wrapS = floorTexture.wrapT = THREE.RepeatWrapping; 
    floorTexture.repeat.set( 1, 1 );
    var floorMaterial = new THREE.MeshBasicMaterial( { map: floorTexture, side: THREE.DoubleSide } );
    var floorGeometry = new THREE.PlaneGeometry(1000, 1000, 10, 10);
    var floor = new THREE.Mesh(floorGeometry, floorMaterial);
    floor.position.y = -0.5;
    floor.rotation.x = Math.PI / 2;
    scene.add(floor);
 
    // SKYBOX
    var skyBoxGeometry = new THREE.CubeGeometry( 10000, 10000, 10000 );
    var skyBoxMaterial = new THREE.MeshBasicMaterial( { color: 0x9999ff, side: THREE.BackSide } );
    var skyBox = new THREE.Mesh( skyBoxGeometry, skyBoxMaterial );
    scene.add(skyBox);
    
    ////////////
    // CUSTOM //
    ////////////
    // ADD A SPHERE GEOMETRY
    var sphereGeometry = new THREE.SphereGeometry( 20, 32, 16 ); // radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength
    var sphereMaterial = new THREE.MeshLambertMaterial( { color: 0x000088 } );
    sphereMesh = new THREE.Mesh( sphereGeometry, sphereMaterial );
    sphereMesh.position.set(0,40,0);
    scene.add(sphereMesh);
 
    // ADD A CUBE GEOMETRY
    var cubeGeometry = new THREE.CubeGeometry( 30, 32, 32 ); // width, height, depth, widthSegments, heightSegments, depthSegments
    var cubeMaterial = new THREE.MeshLambertMaterial( { color: 0x7dc9b6 } );
    cubeMesh = new THREE.Mesh( cubeGeometry, cubeMaterial );
    cubeMesh.position.set(-40,40,0);
    scene.add(cubeMesh);
 
    // ADD A CYLINDER GEOMETRY
    var cylinderGeometry = new THREE.CylinderGeometry( 15, 15, 32, 32 ); // radiusTop, radiusBottom, height, radiusSegments, heightSegments, openEnded
    var cylinderMaterial = new THREE.MeshLambertMaterial( { color: 0xdf18bc } );
    cylinderMesh = new THREE.Mesh( cylinderGeometry, cylinderMaterial );
    cylinderMesh.position.set(40,40,0);
    scene.add(cylinderMesh);
 
    // ADD A TORUS GEOMETRY
    var torusGeometry = new THREE.TorusGeometry( 13, 5, 5, 32, Math.PI * 2 ); // radius, tube, radialSegments, tubularSegments, arc
    var torusMaterial = new THREE.MeshLambertMaterial( { color: 0xdfdd18 } );
    torusMesh = new THREE.Mesh( torusGeometry, torusMaterial );
    torusMesh.position.set(80,40,0);
    scene.add(torusMesh);
}
 
function animate() 
{
    requestAnimationFrame( animate );
    render();        
    update();
}
 
function update()
{
    if ( keyboard.pressed("z") ) 
    {      
        // do something
    }
    
    controls.update();
    stats.update();
}
 
function render() 
{
    renderer.render( scene, camera );
}