17-uv-mapping.html
<!DOCTYPE html>
<html>
<head>
<title>three.js webgl - UV Mapping</title>
<meta charset="utf-8">
<script src="../frameworks/three.min.js"></script>
<script src="../frameworks/dat.gui.min.js"></script>
<style>
body {
margin: 0;
overflow: hidden;
}
</style>
</head>
<script>
var renderer;
var scene;
var camera;
var clock;
var control;
function init() {
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
renderer = new THREE.WebGLRenderer();
renderer.setClearColor(0x000000, 1.0);
renderer.physicallyCorrectLights = true;
renderer.gammaInput = true;
renderer.gammaOutput = true;
renderer.shadowMap.enabled = true;
renderer.toneMapping = THREE.ReinhardToneMapping;
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
var planeGeometry = new THREE.PlaneGeometry(20, 20);
var planeMaterial = new THREE.MeshLambertMaterial({color: 0xcccccc});
var plane = new THREE.Mesh(planeGeometry, planeMaterial);
plane.receiveShadow = true;
plane.rotation.x = -0.5 * Math.PI;
plane.position.x = 0;
plane.position.y = -4;
plane.position.z = 0;
scene.add(plane);
var geometry = new THREE.BoxGeometry(4, 4, 4);
var textureLoader= new THREE.TextureLoader();
var cubeMaterial = new THREE.MeshPhongMaterial({ color: 0x90abed, map:textureLoader.load("../data/graphics/textures/dice/dice-texture.jpg"),transparent:true, opacity:1});
var face1 = [new THREE.Vector2(0, .666), new THREE.Vector2(.5, .666), new THREE.Vector2(.5, 1), new THREE.Vector2(0, 1)];
var face2 = [new THREE.Vector2(.5, .666), new THREE.Vector2(1, .666), new THREE.Vector2(1, 1), new THREE.Vector2(.5, 1)];
var face3 = [new THREE.Vector2(0, .333), new THREE.Vector2(.5, .333), new THREE.Vector2(.5, .666), new THREE.Vector2(0, .666)];
var face4 = [new THREE.Vector2(.5, .333), new THREE.Vector2(1, .333), new THREE.Vector2(1, .666), new THREE.Vector2(.5, .666)];
var face5 = [new THREE.Vector2(0, 0), new THREE.Vector2(.5, 0), new THREE.Vector2(.5, .333), new THREE.Vector2(0, .333)];
var face6 = [new THREE.Vector2(.5, 0), new THREE.Vector2(1, 0), new THREE.Vector2(1, .333), new THREE.Vector2(.5, .333)];
geometry.faceVertexUvs[0] = [];
geometry.faceVertexUvs[0][0] = [ face1[0], face1[1], face1[3] ];
geometry.faceVertexUvs[0][1] = [ face1[1], face1[2], face1[3] ];
geometry.faceVertexUvs[0][2] = [ face2[0], face2[1], face2[3] ];
geometry.faceVertexUvs[0][3] = [ face2[1], face2[2], face2[3] ];
geometry.faceVertexUvs[0][4] = [ face3[0], face3[1], face3[3] ];
geometry.faceVertexUvs[0][5] = [ face3[1], face3[2], face3[3] ];
geometry.faceVertexUvs[0][6] = [ face4[0], face4[1], face4[3] ];
geometry.faceVertexUvs[0][7] = [ face4[1], face4[2], face4[3] ];
geometry.faceVertexUvs[0][8] = [ face5[0], face5[1], face5[3] ];
geometry.faceVertexUvs[0][9] = [ face5[1], face5[2], face5[3] ];
geometry.faceVertexUvs[0][10] = [ face6[0], face6[1], face6[3] ];
geometry.faceVertexUvs[0][11] = [ face6[1], face6[2], face6[3] ];
var cube = new THREE.Mesh(geometry, cubeMaterial);
cube.name='cube';
cube.castShadow = true;
scene.add(cube);
camera.position.x = 15;
camera.position.y = 16;
camera.position.z = 13;
camera.lookAt(scene.position);
var ambient = new THREE.AmbientLight(0xffffff,0.3);
scene.add(ambient);
var light = new THREE.DirectionalLight(0xffffff, 1, 100, 2 );
light.position.set(10, 20 , 20);
light.castShadow = true;
scene.add(light);
control = new function() {
this.rotationSpeed = 0.5;
};
addControlGui(control);
clock = new THREE.Clock();
document.body.appendChild(renderer.domElement);
render();
}
function addControlGui(controlObject) {
var gui = new dat.GUI();
gui.add(controlObject, 'rotationSpeed', -1, 1);
}
function render() {
var delta = clock.getDelta();
var rotSpeed = delta*control.rotationSpeed;
camera.position.x = camera.position.x * Math.cos(rotSpeed) + camera.position.z * Math.sin(rotSpeed);
camera.position.z = camera.position.z * Math.cos(rotSpeed) - camera.position.x * Math.sin(rotSpeed);
camera.lookAt(scene.position);
scene.getObjectByName('cube').rotation.x += delta*0.4*control.rotationSpeed;
scene.getObjectByName('cube').rotation.y += delta*0.4*control.rotationSpeed;
requestAnimationFrame(render);
renderer.render(scene, camera);
}
function handleResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
window.onload = init;
window.addEventListener('resize', handleResize, false);
</script>
<body>
</body>
</html>