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<title>three.js webgl - ShadowMapViewer example </title>
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font-family: Monospace;
background-color: #000;
color: #fff;
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#info {
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top: 10px;
width: 100%;
text-align: center;
z-index: 100;
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#info a { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
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<div id="info">
<a href="http://threejs.org" target="_blank">three.js</a> - ShadowMapViewer example by <a href="https://github.com/arya-s">arya-s</a>
</div>
<script src="../build/three.min.js"></script>
<script src="js/controls/OrbitControls.js"></script>
<script src="js/shaders/UnpackDepthRGBAShader.js"></script>
<script src="js/utils/ShadowMapViewer.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var camera, scene, renderer, clock, stats;
var dirLight, spotLight;
var torusKnot, cube;
var dirLightShadowMapViewer, spotLightShadowMapViewer;
init();
animate();
function init() {
initScene();
initShadowMapViewers();
initMisc();
document.body.appendChild( renderer.domElement );
window.addEventListener( 'resize', onWindowResize, false );
}
function initScene() {
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.01, 1000 );
camera.position.set( 0, 15, 35 );
scene = new THREE.Scene();
// Lights
var ambient = new THREE.AmbientLight( 0x404040 );
scene.add( ambient );
spotLight = new THREE.SpotLight( 0xffffff );
spotLight.position.set( 10, 10, 5 );
spotLight.castShadow = true;
spotLight.shadowCameraNear = 8;
spotLight.shadowCameraFar = 30;
spotLight.shadowDarkness = 0.5;
spotLight.shadowCameraVisible = true;
spotLight.shadowMapWidth = 1024;
spotLight.shadowMapHeight = 1024;
spotLight.name = 'Spot Light';
scene.add( spotLight );
dirLight = new THREE.DirectionalLight( 0xffffff, 1 );
dirLight.position.set( 0, 10, 0 );
dirLight.castShadow = true;
dirLight.shadowCameraNear = 0.01;
dirLight.shadowCameraFar = 10;
dirLight.shadowCameraRight = 15;
dirLight.shadowCameraLeft = -15;
dirLight.shadowCameraTop = 15;
dirLight.shadowCameraBottom = -15;
dirLight.shadowDarkness = 0.5;
dirLight.shadowCameraVisible = true;
dirLight.shadowMapWidth = 1024;
dirLight.shadowMapHeight = 1024;
dirLight.name = 'Dir. Light';
scene.add( dirLight );
// Geometry
var geometry = new THREE.TorusKnotGeometry( 25, 8, 75, 20 );
var material = new THREE.MeshPhongMaterial( {
color: 0xff0000,
shininess: 150,
specular: 0x222222,
shading: THREE.SmoothShading,
} );
torusKnot = new THREE.Mesh( geometry, material );
torusKnot.scale.multiplyScalar( 1 / 18 );
torusKnot.position.y = 3;
torusKnot.castShadow = true;
torusKnot.receiveShadow = true;
scene.add( torusKnot );
var geometry = new THREE.BoxGeometry( 3, 3, 3 );
cube = new THREE.Mesh( geometry, material );
cube.position.set( 8, 3, 8 );
cube.castShadow = true;
cube.receiveShadow = true;
scene.add( cube );
var geometry = new THREE.BoxGeometry( 10, 0.15, 10 );
var material = new THREE.MeshPhongMaterial( {
color: 0xa0adaf,
shininess: 150,
specular: 0xffffff,
shading: THREE.SmoothShading
} );
var ground = new THREE.Mesh( geometry, material );
ground.scale.multiplyScalar( 3 );
ground.castShadow = false;
ground.receiveShadow = true;
scene.add( ground );
}
function initShadowMapViewers() {
dirLightShadowMapViewer = new THREE.ShadowMapViewer( dirLight );
dirLightShadowMapViewer.position.x = 10;
dirLightShadowMapViewer.position.y = 10;
dirLightShadowMapViewer.size.width = 256;
dirLightShadowMapViewer.size.height = 256;
dirLightShadowMapViewer.update(); //Required when setting position or size directly
spotLightShadowMapViewer = new THREE.ShadowMapViewer( spotLight );
spotLightShadowMapViewer.size.set( 256, 256 );
spotLightShadowMapViewer.position.set( 276, 10 );
// spotLightShadowMapViewer.update(); //NOT required because .set updates automatically
}
function initMisc() {
renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.setClearColor( 0x000000 );
renderer.shadowMapEnabled = true;
renderer.shadowMapType = THREE.BasicShadowMap;
// Mouse control
controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.target.set( 0, 2, 0 );
controls.update();
clock = new THREE.Clock();
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.right = '0px';
stats.domElement.style.top = '0px';
document.body.appendChild( stats.domElement );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
dirLightShadowMapViewer.updateForWindowResize();
spotLightShadowMapViewer.updateForWindowResize();
}
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function renderScene() {
renderer.render( scene, camera );
}
function renderShadowMapViewers() {
dirLightShadowMapViewer.render( renderer );
spotLightShadowMapViewer.render( renderer );
}
function render() {
var delta = clock.getDelta();
renderScene();
renderShadowMapViewers();
torusKnot.rotation.x += 0.25 * delta;
torusKnot.rotation.y += 2 * delta;
torusKnot.rotation.z += 1 * delta;
cube.rotation.x += 0.25 * delta;
cube.rotation.y += 2 * delta;
cube.rotation.z += 1 * delta;
}
</script>
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