如何用three.js(webgl)搭建3D粮仓、3D仓库、3D物联网设备监控-第十二课

序：

最近因为疫情，居家办公，索性翻翻之前的项目案例，总结总结。

这次疫情，深圳停摆，群众也挺恐慌的，封闭前一天，超市被抢购一空，虽然官方媒体一再强调，材米油盐蔬菜肉类管够，但是任然挡不住群众们的抢购“热情”。从大家角度出发，此操作虽然不可取，但是也是无可厚非吧。毕竟从古至今，都是民以食为天。

不过大家真不用担心，我国粮食储备在任何时候都是绝对保障的了人民群众的基本需求的。想想08年的粮食大战，大量国际资本出逃股市等资本市场，将目光投向了石油、粮食等大宗商品，想通过粮食来收割其它国家，将次贷危机转嫁给后发国家。在收割完亚非拉等小国后，国际资本的目光开始转向了东方大国，如果能从东方大国的14亿人口上进行收割，获得的将是天量财富。国际资本为了炒高粮价，不断扫货，中储粮为了平抑粮价不断放货出来，最激烈时，基本是隔一天就放一次货。最终，赢得了这场无硝烟的战争。压垮国际资本的最后一根稻草，便是中储粮底牌，有“消息”透露，中储粮的剩余粮食储备完全足够全体中国人吃一年。

项目背景：

随着三维技术发展，储粮产业也切入其中，直观展现各储备站，储备仓，容量利用率，温湿度情况。

如何把控好我国储粮最后一道关，直观调度成为重要的工具手段。

所以这个项目案例就是简单模拟了一个储粮可视化的试探预研。

技术交流 1203193731@qq.com

交流微信：

如果你有什么要交流的心得可邮件我

一、演示功能介绍

1、3D展示粮仓站点布局结构

2、支持第一人称，第三人人称视角切换

3、模拟开仓门动画

4、模拟运送粮食动画

5、模拟VR视角

二、效果与代码实现：

1、粮仓全景，展示粮仓信息，入库时间等

功能代码如下：

ModelBussiness.prototype.showMsg = function (_obj, position, closeFunc) {
    //获取位置
    var screenPostion = WT3DObj.transToScreenCoord(position);
    $("#MarkMessageHelper").remove();
    $("body").append("
");
    layer.closeAll();
    var showHtml = "
";
    var area = ["150px", "100px"];
    if (w3DShowApi) {
        var wparam = w3DShowApi.showFloorNubWin(1);
        if (wparam) {
            showHtml = wparam.html;
            area = wparam.area;
        }
    }
    layer.tips(showHtml, '#MarkMessageHelper', {
        closeBtn: 1,
        shade: false,
        shadeClose: true,
        area: area,
        time: 0,//是否定时关闭，0表示不关闭
        cancel: function (index, layero) {
            layer.close(index);
            if (closeFunc) {
                closeFunc();
            }
        },
        tips: [2, "rgba(0,0,0,0.1)"] //还可配置颜色
    });
}

//显示楼层数字的自定义框
W3DShowApi.prototype.showFloorNubWin = function (floorNub) {
    console.log("显示楼层数字的自定义框");
    //这里的showHtml可以自定义
    var showHtml = ""
        + "库房：0" + parseInt(Math.random() * 90) + "号
"
        + "存储：" + parseInt(Math.random() * 10000) + "吨
"
        + "入库日期：2020-05-20"
        + " ";
    //这里的显示框大小可以自定义
    var area = ['auto', "100px"];//宽 高
    return {
        html: showHtml,
        area: area
    }
}

粮仓模型代码如下:

{"show":true,"uuid":"","name":"ckls","objType":"ExtrudeGeometry","position":{"x":-7027.718,"y":-2429.816,"z":-2366.768},"style":{"skinColor":16711680,"skin":{"skin_up":{"skinColor":16777215,"side":1,"opacity":1,"imgurl":"../img/3dImg/dg.jpg","repeatx":true,"width":0.01,"repeaty":true,"height":0.01},"skin_down":{"skinColor":16777215,"side":1,"opacity":1,"imgurl":"../img/3dImg/dg.jpg"},"skin_side":{"skinColor":16777215,"opacity":1,"imgurl":"../img/3dImg/dg.jpg","repeatx":true,"width":0.1,"repeaty":true,"height":0.005}}},"scale":{"x":1,"y":1,"z":1},"shapeParm":{"points":[{"x":0,"y":0,"type":"nomal"},{"x":2930,"y":0,"type":"nomal"},{"x":2930,"y":420,"type":"nomal"},{"x":1530,"y":550,"type":"nomal"},{"x":0,"y":420,"type":"nomal"}],"holes":[]},"extrudeSettings":{"amount":5900,"curveSegments":2,"steps":2,"bevelEnabled":false,"bevelThickness":1,"bevelSize":1,"bevelSegments":2,"extrudePathPoints":[]},"showSortNub":1,"customType1":"","customType2":"","animation":null,"dbclickEvents":null,"rotation":[{"direction":"x","degree":0},{"direction":"y","degree":1.5707963267948966},{"direction":"z","degree":0}],"BindDevId":null,"BindDevName":null,"devInfo":null,"BindMeteId":null,"BindMeteName":null}

2、模拟VR，第一人称视角漫游粮仓

代码实现如下：

ModelBussiness.prototype.showP3 = function () {
    WT3DObj.commonFunc.changeCameraPosition({ x: -13164.34432311454, y: 7433.8461563184155, z: -26817.982088179473 }
        , { x: 500.681205116016, y: -2274.562814956754, z: -9758.799659726134 }, 1000,
        function () {
            WT3DModel.RunFirstPersonControler = false;
            WT3DModel.isPhoneShow = false;
            WT3DModel.customerControler = false;
        });
}

ModelBussiness.prototype.showP1 = function () {
    layer.msg("按键：W-S-A-D，控制方向！");
    WT3DObj.commonFunc.changeCameraPosition({ x: 5693.553949631542, y: -2278.79914293584, z: -8633.34576275798 }
        , { x: -525.7703788342053, y: -1986.1924640893849, z: -7655.686274658601 }, 1000,
        function () {
            WT3DModel.RunFirstPersonControler = true;
            WT3DModel.FirstPersonHeight = -2000;
            WT3DModel.isPhoneShow = true;
            WT3DModel.customerControler = true;

        });
}

3、模拟开仓门动画，展示库存信息

ModelBussiness.prototype.openCM = function () {
    $("#btnB").hide();
    WT3DObj.commonFunc.changeCameraPosition({ x: -4532.010647527373, y: -2148.209185383555, z: -6284.603537926028 }
        , { x: -4012.9143765146973, y: -2341.7943442729725, z: -5196.68056917963 }, 1000,
        function () {
            var cangku_5 = WT3DObj.commonFunc.findObject("cangku_5");
            var jlm = cangku_5.children[6];
            if ($("#btnB").attr("data-state") == "close") {

                var door_left = WT3DObj.commonFunc.findObject("door_left");

                var _tween = new TWEEN.Tween(door_left.rotation).to({
                    y: -Math.PI / 3 * 2,
                }, 2000).onUpdate(function () {

                }).onComplete(function () {

                }).start();
                var door_right = WT3DObj.commonFunc.findObject("door_right");

                var _tween = new TWEEN.Tween(door_right.rotation).to({
                    y: Math.PI / 3 * 2,
                }, 2000).onUpdate(function () {

                }).onComplete(function () {
                    $("#btnB").html("关仓门");
                    $("#btnB").show();
                    $("#btnB").attr("data-state", "open");
                }).start();

              
            } else {


                var door_left = WT3DObj.commonFunc.findObject("door_left");

                var _tween = new TWEEN.Tween(door_left.rotation).to({
                    y: 0,
                }, 2000).onUpdate(function () {

                }).onComplete(function () {

                }).start();
                var door_right = WT3DObj.commonFunc.findObject("door_right");

                var _tween = new TWEEN.Tween(door_right.rotation).to({
                    y: 0,
                }, 2000).onUpdate(function () {

                }).onComplete(function () {
                    $("#btnB").show();
                    $("#btnB").html("开仓门");
                    $("#btnB").attr("data-state", "close");
                    }).start();

 
            }
        });

}

4、模拟卡车取粮运粮动画

代码实现如下：

  WT3DObj.commonFunc.changeCameraPosition( { x: 801.5002120529539, y: 958.5646504069678, z: -12201.043716027832 },
        { x: -3801.0903443149705, y: -2092.3756811246753, z: -5062.5180794648995 }, 1000,
        function () {
            f1();
        });
    //卡车倒车
    function f1() {

        var car_kct_351 = WT3DObj.commonFunc.findObject("car_kct_351");
        var kache_246 = WT3DObj.commonFunc.findObject("kache_246");
        var kcls = WT3DObj.commonFunc.findObject("kcls");
        kcls.position.x = -4189.892;
        kcls.position.z = -5816.501;
        kcls.scale.y = 0.1;

        kcls.rotation.y = Math.PI / 2;
        car_kct_351.rotation.y = Math.PI / 2;
        kache_246.rotation.y = Math.PI / 2;

        car_kct_351.visible = true;
        kache_246.visible = true;
        car_kct_351.position.x = -22422.475;
        kache_246.position.x = -22620.574;
        car_kct_351.position.z = -6239.199;
        kache_246.position.z = -5932.506;

        var _tween = new TWEEN.Tween(kache_246.position).to({
            x: -3726.218
        }, 6000).onUpdate(function () {

        }).onComplete(function () {

        }).start();
        var _tween = new TWEEN.Tween(car_kct_351.position).to({
            x: -3528.854
        }, 6000).onUpdate(function () {

        }).onComplete(function () {
            f2();

        }).start();
    }

    function f2() {

        var car_kct_351 = WT3DObj.commonFunc.findObject("car_kct_351");
        var kache_246 = WT3DObj.commonFunc.findObject("kache_246");

        var _tween = new TWEEN.Tween(car_kct_351.position).to({
            x: -3532.541,
        }, 2000).onUpdate(function () {
        }).onComplete(function () {

        }).start();

        var _tween = new TWEEN.Tween(kache_246.position).to({
            x: -3729.164,
        }, 2000).onUpdate(function () {
        }).onComplete(function () {
            f3()
        }).start();

    }

5、展示粮仓温湿度分布情况

实时掌控仓库温度，湿度情况，保障粮食质量

//根据仓库id 获取仓库内温度传感器温度值
ModelBussiness.prototype.showTemptureByCID = function (cid) {
    //找到相关传感器模型
    var objs = WT3DObj.commonFunc.findObjectsByNames(["t_" + cid + "_1", "t_" + cid + "_2", "t_" + cid + "_3", "t_" + cid + "_4", "t_" + cid + "_5"]);
    webapi.getTempValues(cid, function (values) {//rest方式获取温度值
      var temModels=  WT3DObj.createTepmtures(objs, values);//创建温度值
      WT3DObj.showModels(temModels);
    })
}

技术交流 1203193731@qq.com

交流微信：

如果你有什么要交流的心得可邮件我

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