[WebGL] Material Basic

이번 예제는 지오메트리의 재질, 즉 매터리얼에 관한 것이며, 기본 매터리얼인 Basic, Lambert, Phong 쉐이딩으로 구성하였습니다.

Download Project

03-01-material-basic.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 cube;
var light, lightbulb;
var step, posZ;
 
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
    light = new THREE.PointLight(0xffffff);
    posZ = -100;
    step = 1;
    light.position.set(0,150,posZ);
    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/FOG
    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);
    scene.fog = new THREE.FogExp2( 0x9999ff, 0.00025 );
    
    ////////////
    // CUSTOM //
    ////////////
    var sphereGeom =  new THREE.SphereGeometry( 50, 32, 32 ); // radius, widthSegments, heightSegments
    
    // Three types of materials, each reacts differently to light.
    var materialBasic = new THREE.MeshBasicMaterial( { color: 0xf068b2 } );
    var materialLambert = new THREE.MeshLambertMaterial( { color: 0xf068b2 } );
    var materialPhong = new THREE.MeshPhongMaterial( { color: 0xf068b2 } );
 
    var sphere = new THREE.Mesh( sphereGeom.clone(), materialBasic );
    sphere.position.set(-150, 50, 0);
    scene.add( sphere );    
    
    var sphere = new THREE.Mesh( sphereGeom.clone(), materialLambert );
    sphere.position.set(0, 50, 0);
    scene.add( sphere );    
    
    var sphere = new THREE.Mesh( sphereGeom.clone(), materialPhong );
    sphere.position.set(150, 50, 0);
    scene.add( sphere );
    
    
    // create a small sphere to show position of light
    lightbulb = new THREE.Mesh( 
        new THREE.SphereGeometry( 10, 16, 8 ), 
        new THREE.MeshBasicMaterial( { color: 0xfcff00 } )
    );
    scene.add( lightbulb );
    lightbulb.position = light.position;
}
 
function animate() 
{
    requestAnimationFrame( animate );
    render();        
    update();
}
 
function update()
{
    posZ += step;
    if(posZ < -200)
        step = 1;
    else if(posZ > 200)
        step = -1;
 
    light.position.z = posZ;
    lightbulb.position.z = posZ;
 
    controls.update();
    stats.update();
}
 
function render() 
{
    renderer.render( scene, camera );
}