360全景图three.js
1.three.js是JavaScript编写的WebGL第三方库。提供了非常多的3D显示功能。
Three.js 是一款运行在浏览器中的 3D 引擎,你可以用它创建各种三维场景,包括了摄影机、光影、材质等各种对象。你可以在它的主页上看到许多精彩的演示。
2.three.js制作官网demo全景图
一.引入js文件
<script src="three.js-dev/build/three.js"></script> <script src="three.js-dev/examples/js/renderers/Projector.js"></script> <script src="three.js-dev/examples/js/renderers/CanvasRenderer.js"></script>
二.使用pano2vr软件制作6张全景图
官网demo中需要6张图片, 这里使用pano2vr生成, 但可以用, 网上搜索都是千篇一律的使用blender, 不会搞
在官网demo的全景图中的6张图在, 我在ps里还原成 (https://threejs.org/examples/?q=pano#canvas_geometry_panorama)
nx.jpg ==> 左1
pz.jpg ==> 左2
px.jpg ==> 左3
nz.jpg ==> 左4
py.jpg ==> 上5
ny.jpg ==> 下6
1.pano生成的顶部图,在ps中先将py逆时针处理90度
2.pano生成的顶部图, 在ps中先将ny顺时针处理90度
然后在pano2vr生成的6张图分别按照以上命名, py.jpg与ny.jpg需要重新处理下
三.复制官网demo的panorama例子
var camera, scene, renderer; var texture_placeholder, isUserInteracting = false, onMouseDownMouseX = 0, onMouseDownMouseY = 0, lon = 90, onMouseDownLon = 0, lat = 0, onMouseDownLat = 0, phi = 0, theta = 0, target = new THREE.Vector3(); init(); animate(); function init() { var container, mesh; container = document.getElementById( 'container' ); camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 1100 ); scene = new THREE.Scene(); texture_placeholder = document.createElement( 'canvas' ); texture_placeholder.width = 128; texture_placeholder.height = 128; var context = texture_placeholder.getContext( '2d' ); context.fillStyle = 'rgb( 200, 200, 200 )'; context.fillRect( 0, 0, texture_placeholder.width, texture_placeholder.height ); var materials = [ loadTexture( 'images/skybox/px.jpg' ), // right loadTexture( 'images/skybox/nx.jpg' ), // left /* pano生成的顶部图, 底部图, 在ps中先将py逆时针处理90度 */ loadTexture( 'images/skybox/py.jpg' ), // top /* pano生成的顶部图, 底部图, 在ps中先将ny顺时针处理90度 */ loadTexture( 'images/skybox/ny.jpg' ), // bottom loadTexture( 'images/skybox/pz.jpg' ), // back loadTexture( 'images/skybox/nz.jpg' ) // front ]; mesh = new THREE.Mesh( new THREE.BoxGeometry( 300, 300, 300, 7, 7, 7 ), materials ); mesh.scale.x = - 1; scene.add( mesh ); renderer = new THREE.CanvasRenderer(); renderer.setPixelRatio( window.devicePixelRatio ); renderer.setSize( window.innerWidth, window.innerHeight ); container.appendChild( renderer.domElement ); document.addEventListener( 'mousedown', onDocumentMouseDown, false ); document.addEventListener( 'mousemove', onDocumentMouseMove, false ); document.addEventListener( 'mouseup', onDocumentMouseUp, false ); document.addEventListener( 'wheel', onDocumentMouseWheel, false ); document.addEventListener( 'touchstart', onDocumentTouchStart, false ); document.addEventListener( 'touchmove', onDocumentTouchMove, false ); // window.addEventListener( 'resize', onWindowResize, false ); } function onWindowResize() { camera.aspect = window.innerWidth / window.innerHeight; camera.updateProjectionMatrix(); renderer.setSize( window.innerWidth, window.innerHeight ); } function loadTexture( path ) { var texture = new THREE.Texture( texture_placeholder ); var material = new THREE.MeshBasicMaterial( { map: texture, overdraw: 0.5 } ); var image = new Image(); image.onload = function () { texture.image = this; texture.needsUpdate = true; }; image.src = path; return material; } 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 ) { var fov = camera.fov + event.deltaY * 0.05; camera.fov = THREE.Math.clamp( fov, 10, 75 ); camera.updateProjectionMatrix(); } function onDocumentTouchStart( event ) { if ( event.touches.length == 1 ) { event.preventDefault(); onPointerDownPointerX = event.touches[ 0 ].pageX; onPointerDownPointerY = event.touches[ 0 ].pageY; onPointerDownLon = lon; onPointerDownLat = lat; } } function onDocumentTouchMove( event ) { if ( event.touches.length == 1 ) { event.preventDefault(); lon = ( onPointerDownPointerX - event.touches[0].pageX ) * 0.1 + onPointerDownLon; lat = ( event.touches[0].pageY - onPointerDownPointerY ) * 0.1 + onPointerDownLat; } } function animate() { requestAnimationFrame( animate ); update(); } function update() { // 自动旋转 // 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 ); target.x = 500 * Math.sin( phi ) * Math.cos( theta ); target.y = 500 * Math.cos( phi ); target.z = 500 * Math.sin( phi ) * Math.sin( theta ); camera.lookAt( target ); renderer.render( scene, camera ); }