第一步,利用CampusBuilder搭建模拟场景。CampusBuilder的模型库有各种各样的模型,使我们搭建出的场景更逼真。使用CampusBuilde创建层级,之后再给层级加外立面就出现了当前的效果。详情移步:CampusBuilder3D场景制作工具
//加载场景代码 var app = new THING.App({ // 场景地址 "url": "http://www.thingjs.com/./uploads/wechat/oLX7p05lsWJZUIxnIWsNXAzJ40X8/scene/管线演示2", //背景设置 "skyBox": "BlueSky" });
第二步, 初始化摄像机位置,添加四个按钮,并创建四个方法。
app.on('load', function () { //摄像机位置初始化 app.camera.position = [0.4374202706634094, 101.92917348318593, 97.06808820543526]; app.camera.target = [52.75056074670042, -18.885239034825123, -20.619558480451797]; new THING.widget.Button('水管演示', water); new THING.widget.Button('电线演示', electric); new THING.widget.Button('燃气演示', gas); }); function water() { } function electric() { } function gas() { }
第三步,创建管线,我们这里写水管线以后的电线,燃气管线同理。这里简单说一下PolygonLine,它继承THING.LineBase,同样有贴图属性,可以自己从本地上传图片至页面资源后使用。
var line = null; function buildLine(points, color) { line = app.create({ type: 'PolygonLine', points: points, style: { color: color, } }); line.scrollUV = true; } function water() { var waterUnderPoints = []; buildingOpacity(0.3); app.query(/building_0/).forEach( function (parentObj) { var points = []; points.push(parentObj.selfToWorld([5, -0.8, 0])); waterUnderPoints.push(points[0]); for (var i = 3; i <= 24; i += 3) { points.push(parentObj.selfToWorld([5, i, 0])); points.push(parentObj.selfToWorld([5, i, 3])); points.push(parentObj.selfToWorld([-5, i, 3])); points.push(parentObj.selfToWorld([-5, i, -3])); points.push(parentObj.selfToWorld([5, i, -3])); points.push(parentObj.selfToWorld([5, i, 0])); } points.push(parentObj.selfToWorld([5, 24, 0])); buildLine(points, '#0000FF'); } ); waterUnderPoints.push([15.32711, -0.79, -55.655339999999999]); buildLine(waterUnderPoints, '#0000FF'); //renderOrder(); } function buildingOpacity(num) { app.query("*").forEach(function (obj) { obj.style.opacity = num; }); } function renderOrder(){ app.query('.PolygonLine').forEach( function (obj) { obj.renderOrder = -10000; } ); }
这里用到了两个方法:
1) buildingOpacity(num);
这个方法的主要作用就是为了将场景虚化,更好的展示我们的管线。
2)renderOrder();
这个我在代码中先注释掉了我们先看一下现在的效果:
注意:如果没有设置renderOrder();属性的 ,管线的渲染层级没有building高 ,就会导致有被building遮盖的PolygonLine无法正常显示,设置renderOrder();属性后,渲染效果正常
最后一步,创建出电线以及燃气线
function electric() { var electricUnderPoints = []; buildingOpacity(0.3); app.query(/building_0/).forEach( function (parentObj) { var points = []; points.push(parentObj.selfToWorld([3, -0.8, 0])); electricUnderPoints.push(points[0]); for (var i = 3; i <= 24; i += 2.5) { points.push(parentObj.selfToWorld([3, i, 0])); points.push(parentObj.selfToWorld([-3, i, 2])); } points.push(parentObj.selfToWorld([3, 24, 0])); buildLine(points, '#00FF00'); console.log(points); } ); electricUnderPoints.push([16.690666, -0.79, -55.115203999999999]); buildLine(electricUnderPoints, '#00FF00'); renderOrder(); } function gas() { var gasUnderPoints = []; buildingOpacity(0.3); app.query(/building_0/).forEach( function (parentObj) { var points = []; points.push(parentObj.selfToWorld([-6.2, -0.3, 0])); gasUnderPoints.unshift(points[0]); for (var i = 3; i <= 24; i += 3) { points.push(parentObj.selfToWorld([-6.2, i, 0])); points.push(parentObj.selfToWorld([-6.2, i, 2])); points.push(parentObj.selfToWorld([6.2, i, 2])); points.push(parentObj.selfToWorld([6.2, i, -2])); points.push(parentObj.selfToWorld([-6.2, i, -2])); points.push(parentObj.selfToWorld([-6.2, i, 0])); } points.push(parentObj.selfToWorld([-6.2, 24, 0])); buildLine(points, '#FF0000'); console.log(points); } ); gasUnderPoints.unshift([22.963023600000003, -0.3, 57.8305784]); buildLine(gasUnderPoints, '#FF0000'); renderOrder(); }
附上完整代码,可以直接在ThingJS平台调试
//加载场景代码 var app = new THING.App({ // 场景地址 "url": "http://www.thingjs.com/./uploads/wechat/oLX7p05lsWJZUIxnIWsNXAzJ40X8/scene/管线演示2", //背景设置 "skyBox": "BlueSky" }); app.on('load', function () { //摄像机位置初始化 app.camera.position = [0.4374202706634094, 101.92917348318593, 97.06808820543526]; app.camera.target = [52.75056074670042, -18.885239034825123, -20.619558480451797]; new THING.widget.Button('水管演示', water); new THING.widget.Button('电线演示', electric); new THING.widget.Button('燃气演示', gas); }); function water() { var waterUnderPoints = []; buildingOpacity(0.3); app.query(/building_0/).forEach( function (parentObj) { var points = []; points.push(parentObj.selfToWorld([5, -0.8, 0])); waterUnderPoints.push(points[0]); for (var i = 3; i <= 24; i += 3) { points.push(parentObj.selfToWorld([5, i, 0])); points.push(parentObj.selfToWorld([5, i, 3])); points.push(parentObj.selfToWorld([-5, i, 3])); points.push(parentObj.selfToWorld([-5, i, -3])); points.push(parentObj.selfToWorld([5, i, -3])); points.push(parentObj.selfToWorld([5, i, 0])); } points.push(parentObj.selfToWorld([5, 24, 0])); buildLine(points, '#0000FF'); } ); waterUnderPoints.push([15.32711, -0.79, -55.655339999999999]); buildLine(waterUnderPoints, '#0000FF'); renderOrder(); } function electric() { var electricUnderPoints = []; buildingOpacity(0.3); app.query(/building_0/).forEach( function (parentObj) { var points = []; points.push(parentObj.selfToWorld([3, -0.8, 0])); electricUnderPoints.push(points[0]); for (var i = 3; i <= 24; i += 2.5) { points.push(parentObj.selfToWorld([3, i, 0])); points.push(parentObj.selfToWorld([-3, i, 2])); } points.push(parentObj.selfToWorld([3, 24, 0])); buildLine(points, '#00FF00'); console.log(points); } ); electricUnderPoints.push([16.690666, -0.79, -55.115203999999999]); buildLine(electricUnderPoints, '#00FF00'); renderOrder(); } function gas() { var gasUnderPoints = []; buildingOpacity(0.3); app.query(/building_0/).forEach( function (parentObj) { var points = []; points.push(parentObj.selfToWorld([-6.2, -0.3, 0])); gasUnderPoints.unshift(points[0]); for (var i = 3; i <= 24; i += 3) { points.push(parentObj.selfToWorld([-6.2, i, 0])); points.push(parentObj.selfToWorld([-6.2, i, 2])); points.push(parentObj.selfToWorld([6.2, i, 2])); points.push(parentObj.selfToWorld([6.2, i, -2])); points.push(parentObj.selfToWorld([-6.2, i, -2])); points.push(parentObj.selfToWorld([-6.2, i, 0])); } points.push(parentObj.selfToWorld([-6.2, 24, 0])); buildLine(points, '#FF0000'); console.log(points); } ); gasUnderPoints.unshift([22.963023600000003, -0.3, 57.8305784]); buildLine(gasUnderPoints, '#FF0000'); renderOrder(); } /************************************************************************ * common */ function buildingOpacity(num) { app.query("*").forEach(function (obj) { obj.style.opacity = num; }); } function renderOrder(){ app.query('.PolygonLine').forEach( function (obj) { obj.renderOrder = -10000; } ); } var line = null; function buildLine(points, color) { line = app.create({ type: 'PolygonLine', points: points, style: { color: color, } }); line.scrollUV = true; }
现实中社区管线远比DEMO中复杂,开发者可以根据自身业务实际,使用ThingJS开发出更多三维可视化应用。