<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>EmissiveMap</title>
<script src="../../three-part/threejs/three.js"></script>
<script src="../../three-part/utils/stats.min.js"></script>
<script src="../../three-part/utils/dat.gui.min.js"></script>
<script src="../controls/TrackballControls.js"></script>
<script src="../util/util.js"></script>
<style>
body {
margin: 0;
overflow: hidden;
}
</style>
</head>
<body>
<div id="container"></div>
<script type="text/javascript">
init();
function init() {
// show FPS
let stats = initStats();
// resize
window.addEventListener('resize', onResize, false);
let scene = new THREE.Scene();
let camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.x = -30;
camera.position.y = 40;
camera.position.z = 30;
camera.lookAt(scene.position);
let renderer = new THREE.WebGLRenderer();
renderer.setClearColor(new THREE.Color(0x000000));
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.shadowMap.enabled = true;
document.getElementById("container").appendChild(renderer.domElement);
// init trackball control
let trackballControls = initTrackballControls(camera, renderer);
let clock = new THREE.Clock();
// add a plane
let planeGeometry = new THREE.PlaneGeometry(100, 100, 1, 1);
let planeMaterial = new THREE.MeshLambertMaterial({
color: 0xffffff
});
let plane = new THREE.Mesh(planeGeometry, planeMaterial);
plane.receiveShadow = true;
plane.rotation.x = -0.5 * Math.PI;
scene.add(plane);
/*let ambienLight = new THREE.AmbientLight(0xffffff);
scene.add(ambienLight);*/
let spotLight = new THREE.SpotLight(0xffffff, 0.3);
spotLight.position.set(-40, 60, -10);
spotLight.castShadow = true;
scene.add(spotLight);
let textureLoader = new THREE.TextureLoader();
let cubeGeometry = new THREE.BoxGeometry(10, 10, 10);
let cubeMaterial = new THREE.MeshStandardMaterial({
emissive: 0x00ffff,
emissiveMap: textureLoader.load("../assets/textures/emissive/lava.png"),
normalMap: textureLoader.load("../assets/textures/emissive/lava-normals.png"),
metalnessMap: textureLoader.load("../assets/textures/emissive/lava-smoothness.png"),
metalness: 1,
roughness: 0.4,
normalScale: new THREE.Vector2(4,4)
});
let cube = new THREE.Mesh(cubeGeometry, cubeMaterial);
cube.position.set(0, 5, 0);
scene.add(cube);
// attributes which can be modified in GUI
const controls = {
"spotLightIntensity" : spotLight.intensity,
"emissive" : cubeMaterial.emissive.getStyle(),
"emissiveIntensity" : cubeMaterial.emissiveIntensity
};
// init GUI
initGUI();
renderScene();
function initGUI(){
let gui = new dat.GUI();
gui.add(controls, "spotLightIntensity", 0, 1, 0.01).onChange(function (e) {
spotLight.intensity = e;
});
gui.addColor(controls, "emissive").onChange(function (e) {
cubeMaterial.emissive.setStyle(e);
});
gui.add(controls, "emissiveIntensity", 0, 5, 0.1).onChange(function (e) {
cubeMaterial.emissiveIntensity = e;
});
}
function onResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function renderScene(){
trackballControls.update(clock.getDelta());
stats.update();
requestAnimationFrame(renderScene);
renderer.render(scene, camera);
}
}
</script>
</body>
</html>
运行结果：
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