three.js全景图
时间: 2023-09-15 16:23:40 浏览: 70
Three.js全景图是指利用Three.js库实现的一种展示全景图片的技术。通过使用Three.js中的立方体或球体作为天空盒子,将无缝衔接的全景图片贴在上面,从而营造出一种仿佛身临其境的全景视觉效果。相机通常位于中央,当离边缘足够远时,用户无法察觉到立方体或球体的存在,只感受到身处于一个真实的场景中。但一旦超出边界,用户就会看到立方体或球体的边界。通过Three.js库,开发者可以轻松创建精美的全景图展示效果。 这样的全景图展示可以通过Three.js官方的全景图实例来进一步了解和参考。<span class="em">1</span><span class="em">2</span><span class="em">3</span><span class="em">4</span>
相关问题
html three.js 全景图
HTML是一种标记语言,用于创建网页。它由各种标签和属性组成,可以用于定义文本、图像、链接、表格等内容。而three.js是一个用于创建3D图形的JavaScript库,它可以在网页中创建各种3D场景和动画效果。全景图是一种特殊的图像,可以让用户在网页上以360度的视角查看整个场景。在网页中实现全景图需要使用HTML和JavaScript,通常使用全景图库或者自己编写代码实现。
three.js实现全景图
以下是两种使用three.js实现全景图的例子:
1. 使用WebGL渲染全景图
```html
<!DOCTYPE html>
<html>
<head>
<title>WebGL Panorama Cube</title>
<meta charset="utf-8">
<style>
body {
margin: 0;
overflow: hidden;
}
canvas {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<script src="https://cdn.bootcdn.net/ajax/libs/three.js/r128/three.min.js"></script>
<script>
var scene, camera, renderer;
var geometry, material, mesh;
init();
animate();
function init() {
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.z = 0.01;
geometry = new THREE.BoxGeometry(1, 1, 1);
var urls = [
'posx.jpg',
'negx.jpg',
'posy.jpg',
'negy.jpg',
'posz.jpg',
'negz.jpg'
];
material = new THREE.MeshBasicMaterial({
map: new THREE.CubeTextureLoader().load(urls),
side: THREE.BackSide
});
mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
}
function animate() {
requestAnimationFrame(animate);
mesh.rotation.x += 0.01;
mesh.rotation.y += 0.02;
renderer.render(scene, camera);
}
</script>
</body>
</html>
```
2. 使用CSS3D渲染全景图
```html
<!DOCTYPE html>
<html>
<head>
<title>CSS3D Panorama</title>
<meta charset="utf-8">
<style>
body {
margin: 0;
overflow: hidden;
}
#container {
width: 100%;
height: 100%;
position: absolute;
-webkit-perspective: 1000px;
perspective: 1000px;
}
#pano {
width: 100%;
height: 100%;
position: absolute;
-webkit-transform-style: preserve-3d;
transform-style: preserve-3d;
}
#pano img {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
-webkit-transform: translateZ(-1px) scale(-1, 1);
transform: translateZ(-1px) scale(-1, 1);
}
</style>
</head>
<body>
<div id="container">
<div id="pano">
<img src="pano.jpg">
</div>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/three.js/r128/three.min.js"></script>
<script>
var camera, scene, renderer;
var isUserInteracting = false,
onMouseDownMouseX = 0, onMouseDownMouseY = 0,
lon = 0, onMouseDownLon = 0,
lat = 0, onMouseDownLat = 0,
phi = 0, theta = 0;
init();
animate();
function init() {
var container, mesh;
container = document.getElementById('container');
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 1100);
camera.target = new THREE.Vector3(0, 0, 0);
scene = new THREE.Scene();
var geometry = new THREE.SphereGeometry(500, 60, 40);
geometry.scale(-1, 1, 1);
var material = new THREE.MeshBasicMaterial({
map: new THREE.TextureLoader().load('pano.jpg')
});
mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
renderer = new THREE.CSS3DRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.domElement.style.position = 'absolute';
renderer.domElement.style.top = 0;
container.appendChild(renderer.domElement);
document.addEventListener('mousedown', onDocumentMouseDown, false);
document.addEventListener('mousemove', onDocumentMouseMove, false);
document.addEventListener('mouseup', onDocumentMouseUp, false);
document.addEventListener('wheel', onDocumentMouseWheel, false);
window.addEventListener('resize', onWindowResize, false);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function onDocumentMouseDown(event) {
event.preventDefault();
isUserInteracting = true;
onPointerDownPointerX = event.clientX;
onPointerDownPointerY = event.clientY;
onPointerDownLon = lon;
onPointerDownLat = lat;
}
function onDocumentMouseMove(event) {
if (isUserInteracting === true) {
lon = (onPointerDownPointerX - event.clientX) * 0.1 + onPointerDownLon;
lat = (event.clientY - onPointerDownPointerY) * 0.1 + onPointerDownLat;
}
}
function onDocumentMouseUp(event) {
isUserInteracting = false;
}
function onDocumentMouseWheel(event) {
camera.fov += event.deltaY * 0.05;
camera.updateProjectionMatrix();
}
function animate() {
requestAnimationFrame(animate);
update();
}
function update() {
if (isUserInteracting === false) {
lon += 0.1;
}
lat = Math.max(-85, Math.min(85, lat));
phi = THREE.Math.degToRad(90 - lat);
theta = THREE.Math.degToRad(lon);
camera.target.x = 500 * Math.sin(phi) * Math.cos(theta);
camera.target.y = 500 * Math.cos(phi);
camera.target.z = 500 * Math.sin(phi) * Math.sin(theta);
camera.lookAt(camera.target);
renderer.render(scene, camera);
}
</script>
</body>
</html>
```
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