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dyna_texture.html
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<title>动态全景图</title>
<meta charset="utf-8">
<link rel="stylesheet" href="css/dat-gui-light-theme.css" type="text/css" />
<meta name="viewport" content="user-scalable=no, initial-scale=1">
<style>
body {
margin: 0px;
overflow: hidden;
z-index: -1000;
}
#progress {
position: absolute;
bottom: 0;
right: 10%;
width: 80%;
}
</style>
</head>
<body>
<div id="container"></div>
<input id="progress" type="range" name="progress" min="0" max="1" step="0.00001" value="0" />
<script src="js/jquery.min.js"></script>
<script src="js/Detector.js"></script>
<script src="js/three.js"></script>
<script src="js/d3.v4.min.js"></script>
<script src="js/CanvasRenderer.js"></script>
<script src="js/Stats.js"></script>
<script src="js/DeviceOrientationControls.js"></script>
<script src="js/OrbitControls.js"></script>
<script src="js/dat.gui.min.js"></script>
<script src="js/tween.min.js"></script>
<script src="js/utils.js"></script>
<script src="js/DualTriMesh.js"></script>
<script>
"use strict";
function newTriangle(a,b,c) { // a,b,c
var geometry = new THREE.Geometry();
geometry.vertices.push(a.clone());
geometry.vertices.push(b.clone());
geometry.vertices.push(c.clone());
geometry.faces.push( new THREE.Face3(0,1,2) );
geometry.updatePosition = function (a,b,c) {
geometry.vertices[0].copy(a);
geometry.vertices[1].copy(b);
geometry.vertices[2].copy(c);
geometry.verticesNeedUpdate = true;
};
return geometry;
}
// 这个渲染器用来得到【纹理帧】
var _renderer = new THREE.WebGLRenderer({ antialias: true });
_renderer.setSize(4096, 2048);
// 正射相机用于采样得到【纹理帧】
var orthCamera = new THREE.OrthographicCamera(-2048,2048,1024,-1024,1,5000); // left, right, top, bottom, near, far
orthCamera.position.set(0,0,3000);
orthCamera.lookAt(new THREE.Vector3(0,0,0));
var group = new THREE.Group();
var materialA = new THREE.MeshBasicMaterial( { map: new THREE.TextureLoader().load( 'texture1.jpg' ), side: THREE.DoubleSide, transparent: true } );
var materialB = new THREE.MeshBasicMaterial( { map: new THREE.TextureLoader().load( 'texture2.jpg' ), side: THREE.DoubleSide, transparent: false } );
// 一组三角形，通过三个同名点 renference r1、r2、r3 来控制三角形的位移和变形
function newPairTriangle(r1,r2,r3) {
var group = new THREE.Group();
// 把 renference 保存起来
group.pairs = [ r1,r2,r3 ];
// p{1~3} 是初始位置，p{4~6} 是目标位置
var p1 = new THREE.Vector3(r1.x1,r1.y1,0),
p2 = new THREE.Vector3(r2.x1,r2.y1,0),
p3 = new THREE.Vector3(r3.x1,r3.y1,0),
p4 = new THREE.Vector3(r1.x2,r1.y2,0),
p5 = new THREE.Vector3(r2.x2,r2.y2,0),
p6 = new THREE.Vector3(r3.x2,r3.y2,0);
// 用初始位置初始三个三角形 tri1、tri2、tri3
var tri1 = newTriangle( p1.clone().setZ(200), p2.clone().setZ(200), p3.clone().setZ(200) ),
tri2 = newTriangle( p1.clone().setZ(100), p2.clone().setZ(100), p3.clone().setZ(100) ),
tri3 = newTriangle( p1.clone().setZ(300), p2.clone().setZ(300), p3.clone().setZ(300) );
// tri1 应用当前全景纹理，tri2 应用下一站全景纹理，tri3 应用白色线框
var mesh1 = new THREE.Mesh(tri1, materialA),
mesh2 = new THREE.Mesh(tri2, materialB),
mesh3 = new THREE.Mesh(tri3, config.whiteFrameMaterial);
group.add(mesh1).add(mesh2).add(mesh3);
if (!config.debug) {
mesh3.visible = false;
}
mesh1.geometry.faceVertexUvs[0] = []; // set up an array
mesh1.geometry.faceVertexUvs[0].push([ // and push some elements
Util.xy2uv(p1.x,p1.y),
Util.xy2uv(p2.x,p2.y),
Util.xy2uv(p3.x,p3.y)
]);
mesh1.uvsNeedUpdate = true;
mesh2.geometry.faceVertexUvs[0] = [];
mesh2.geometry.faceVertexUvs[0].push([
Util.xy2uv(p4.x,p4.y),
Util.xy2uv(p5.x,p5.y),
Util.xy2uv(p6.x,p6.y)
]);
mesh2.uvsNeedUpdate = true;
group.tri1 = tri1; group.mesh1 = mesh1;
group.tri2 = tri2; group.mesh2 = mesh2;
group.tri3 = tri3; group.mesh3 = mesh3;
// 更新位置
group.updatePosition = function(alpha) {
var r1 = group.pairs[0],
r2 = group.pairs[1],
r3 = group.pairs[2];
var p1 = new THREE.Vector3(r1.x1,r1.y1,0), p4 = new THREE.Vector3(r1.x2,r1.y2,0),
p2 = new THREE.Vector3(r2.x1,r2.y1,0), p5 = new THREE.Vector3(r2.x2,r2.y2,0),
p3 = new THREE.Vector3(r3.x1,r3.y1,0), p6 = new THREE.Vector3(r3.x2,r3.y2,0);
// 线性内插
p1.lerp(p4, alpha);
p2.lerp(p5, alpha);
p3.lerp(p6, alpha);
// 分别更新三角形
group.tri1.updatePosition(p1.clone().setZ(200),p2.clone().setZ(200),p3.clone().setZ(200));
group.tri2.updatePosition(p1.clone().setZ(100),p2.clone().setZ(100),p3.clone().setZ(100));
group.tri3.updatePosition(p1.clone().setZ(300),p2.clone().setZ(300),p3.clone().setZ(300));
group.mesh3.visible = config.debug;
};
group.isPairTriangle = true;
return group;
}
var container, camera, scene, renderer,
texture,
material,
geometry,
mesh,
controlsDeviceOri, controlsOrbit,
stats;
var Config = function() {
var _this = this;
this.debug = false;
this.autorot = 0;
this.whiteFrameMaterial = new THREE.MeshBasicMaterial({ color: 0xffffff, wireframe: true, side: THREE.DoubleSide, transparent: true });
// 压测
this.benchmark = false;
this.lastProgress = -1.0;
this.progress = 0.0;
this.inProgress = false;
this.applyProgress = function() {
$(".close-button").click();
$("#progress")[0].value = _this.progress = 0.0;
_this.inProgress = true;
var t1 = new TWEEN.Tween(_this)
.delay(100)
.to({ progress: 1.0 }, 5000)
.onComplete(function() {
_this.inProgress = false;
});
t1.start();
};
// 变形
this.morph = function(t) {
var t = t || _this.progress;
if (t === _this.lastProgress) { return; }
_this.lastProgress = t;
// 更新三角形组（有很多三角形组，每个三角形组由三个三角形，分别应用了当前纹理、下一站纹理，以及线框纹理）
group.children.forEach(function(tri){
if (tri.isPairTriangle === true) {
tri.updatePosition(t);
}
});
// render a canvas，渲染【纹理帧】
materialA.opacity = 1-t;
_renderer.render(scene, orthCamera);
// 渲染后，_renderer.domElement 就更新了，现在提醒一下 texture
texture.needsUpdate = true;
};
this.fov = 60;
this.lon = 180;
this.lat = 0;
this.freeze = false;
this.toggleCamera = function() {
controlsOrbit.enabled = !controlsOrbit.enabled;
if (controlsOrbit.enabled) {
camera.position.copy(camera.position0);
controlsOrbit.target.set(0,0,0);
} else {
camera.position0.copy(camera.position);
camera.position.set(0,0,0);
}
};
this.loadDefaultPairs = function() {
$.get('pairs.json', function(data) {
config.loadPairsTxt(data);
config.applyTriangulation();
}, 'text');
};
this.pairs = [];
// 这个说过了
this.loadPairsTxt = function(text) {
_this.pairs = [];
var pairs = JSON.parse(text);
pairs.forEach(function(pair){
var p = new Pair({
loading: true,
x1: pair.x1,
y1: pair.y1,
x2: pair.x2,
y2: pair.y2
});
if (p.valid === true) {
_this.pairs.push(p);
}
});
};
// 这个说过了
this.applyTriangulation = function(){
var sites = [];
var refs = {};
var xmin = 100000000, xmax = 0, ymin = 10000000000, ymax = 0;
_this.pairs.forEach(function(pair){
if (pair.valid) {
var p = [pair.x1, pair.y1];
refs[Util.pos2name(p[0],p[1])] = pair;
sites.push(p);
if (xmin > p[0]) { xmin = p[0]; }
if (xmax < p[0]) { xmax = p[0]; }
if (ymin > p[1]) { ymin = p[1]; }
if (ymax < p[1]) { ymax = p[1]; }
}
});
var voronoi = d3.voronoi().extent([[xmin-10, ymin-10], [xmax+10, ymax+10]]);
var diagram = voronoi(sites);
var triangles = diagram.triangles();
var index = 0;
group.childeren = [];
triangles.forEach(function(tri){
var p1 = tri[0];
var p2 = tri[1];
var p3 = tri[2];
var p1n = Util.pos2name(p1[0],p1[1]);
var p2n = Util.pos2name(p2[0],p2[1]);
var p3n = Util.pos2name(p3[0],p3[1]);
var ref1 = refs[p1n];
var ref2 = refs[p2n];
var ref3 = refs[p3n];
if ( ref1 !== undefined && ref2 !== undefined && ref3 !== undefined ) {
// editor
var mesh = newPairTriangle(ref1,ref2,ref3);
group.add(mesh);
}
});
};
};
var config = new Config();
var isDesktop = !navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry|BB10|mobi|tablet|opera mini|nexus 7)/i);
var gui = new dat.GUI(); gui.closed = true;
window.addEventListener('load', function() {
var animate = function(time){
window.requestAnimationFrame( animate );
TWEEN.update();
if (config.inProgress) {
$("#progress")[0].value = config.progress;
}
if (config.benchmark) {
config.progress = time%100/100;
}
config.morph();
if (controlsOrbit.enabled) {
controlsOrbit.update();
} else {
if (controlsDeviceOri.enabled) {
if (!config.freeze) {
controlsDeviceOri.update();
}
} else {
camera.lon += config.autorot/5;
if (camera.lon > 360) { camera.lon -= 360; }
if (camera.lon < 0) { camera.lon += 360; }
camera.lat = Math.max( - 85, Math.min( 85, camera.lat ) );
var phi = THREE.Math.degToRad( 90 - camera.lat );
var theta = THREE.Math.degToRad( camera.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.add(camera.position) );
}
}
renderer.render(scene, camera);
stats.update();
};
stats = new Stats();
document.body.appendChild(stats.domElement);
camera = new THREE.PerspectiveCamera(config.fov, window.innerWidth / window.innerHeight, 1, 10000000);
camera.isUserInteracting = false;
camera.lon = 169.89999999999998;
camera.lat = -3.3000000000000003;
camera.onPointerDownPointerX = 0;
camera.onPointerDownPointerY = 0;
camera.onPointerDownLon = 0;
camera.onPointerDownLat = 0;
camera.target = new THREE.Vector3( 0, 0, 0 );
camera.position0 = new THREE.Vector3( 1000, 0, 0 );
scene = new THREE.Scene();
scene.add(new THREE.AmbientLight(0xffffff));
group.position.set(0,0,2500);
scene.add(group);
scene.add(new THREE.AxisHelper(1000));
var geometry = new THREE.PlaneGeometry( 4096, 2048, 32, 16 );
var plane1 = new THREE.Mesh( geometry.clone(), materialA ); plane1.position.set(0,0,2000);
var plane2 = new THREE.Mesh( geometry.clone(), materialB ); plane2.position.set(0,0,1000);
scene.add(plane1).add(plane2);
config.plane1 = plane1;
config.plane2 = plane2;
// 注意这个纹理，是从 _renderer 的 domElement 而来
texture = new THREE.Texture( _renderer.domElement, THREE.UVMapping, THREE.RepeatWrapping, THREE.RepeatWrapping );
texture.needsUpdate = true;
geometry = new THREE.SphereGeometry( 500, 64, 32 ); geometry.scale( - 1, 1, 1 );
// 全景球上用的就是这个纹理
material = new THREE.MeshBasicMaterial( { map: texture, side: THREE.DoubleSide } ),
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
container = document.getElementById( 'container' );
if( Detector.webgl ){
renderer = new THREE.WebGLRenderer({
antialias: true
// , alpha: true
});
} else {
renderer = new THREE.CanvasRenderer();
}
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.domElement.style.position = 'absolute';
renderer.domElement.style.top = 0;
container.appendChild(renderer.domElement);
controlsDeviceOri = new THREE.DeviceOrientationControls( camera );
controlsOrbit = new THREE.OrbitControls( camera, renderer.domElement );
controlsOrbit.enabled = false;
if (isDesktop) {
controlsDeviceOri.enabled = false;
}
window.addEventListener('resize', function() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}, false);
container.addEventListener( 'mousedown', function(event) {
if (controlsOrbit.enabled) { return; }
camera.isUserInteracting = true;
camera.onPointerDownPointerX = event.clientX;
camera.onPointerDownPointerY = event.clientY;
camera.onPointerDownLon = camera.lon;
camera.onPointerDownLat = camera.lat;
}, false );
container.addEventListener( 'mousemove', function(event) {
if (controlsOrbit.enabled) { return; }
if ( camera.isUserInteracting === true ) {
camera.lon = ( camera.onPointerDownPointerX - event.clientX ) * 0.1 + camera.onPointerDownLon;
camera.lat = ( event.clientY - camera.onPointerDownPointerY ) * 0.1 + camera.onPointerDownLat;
}
}, false );
container.addEventListener( 'mouseup', function(event) {
if (controlsOrbit.enabled) { return; }
camera.isUserInteracting = false;
}, false );
container.addEventListener( 'wheel', function(event) {
var fov = camera.fov + event.deltaY * 0.05;
camera.fov = THREE.Math.clamp(Math.round(fov), 10, 100);
config.fov = camera.fov; gui.updateDisplay();
camera.updateProjectionMatrix();
}, false );
gui.add(config, 'applyProgress').name("过渡");
gui.add(config, 'benchmark').name("压力测试");
gui.add(config, 'toggleCamera').name("切换相机");
gui.add(config, 'autorot').min(-5).max(+5).step(1).listen().name("自动浏览");
gui.add(config, 'fov').min(10).max(150).step(1).listen().name("视场角").onChange(function(value){
if (config.fov !== camera.fov) {
camera.fov = value;
camera.updateProjectionMatrix();
}
});
gui.add(config, 'debug').name("显示网格").onChange(function(){
config.lastProgress = -1.0;
});
if (isDesktop) {
gui.add(camera, 'lon').min( 0).max(360).step(1).listen().name("lon");
gui.add(camera, 'lat').min(-85).max( 85).step(1).listen().name("lat");
} else {
gui.add(config, 'freeze').name("锁定重力感应");
}
var links = gui.addFolder('链接');
var link = {
"README": function() { window.location = "README.html"; },
"dyna_sphere": function() { window.location = "dyna_sphere.html"; }
};
links.add(link, 'dyna_sphere').name("动态全景球方案");
links.add(link, 'README').name("文档");
animate();
config.loadDefaultPairs();
}, false);
$("#progress").on("input", function(){
config.progress = this.value;
});
</script>
</body>
</html>