dataserver_qp_23D_zhsj/scripts/mod/layerVue/vector.js

/**
 * [ONEMAP.M.projectController]
 * @return {[object]}
 */
define([
    'html!templates/menu/vectorInfo',
    'css!styles/menu/vectorInfo',
], function (dialogLayout) {

    /**
     * 初始化并订阅事件
     * @return {[type]} [description]
     */
    /**
     * 模块数据 用于数据存储和外部调用
     * @type {Object}
     * 数据存放
     */
    var modValue = {
        VECTOR: {},
        handler: null,
        nowOpenDialogLayerId: null,
    }


    function add(item, cancelSelected) {
        modValue.cancelSelected = cancelSelected
        // if (ONEMAP.M.myLayers.checkLength() >= map23DConfig.layerMaxLength) {
        //     ONEMAP.C.publisher.publish({ type: 'warning', message: '图层数量已达上限' }, 'noteBar::add');
        //     modValue.cancelSelected(item.id)
        //     return;
        // }
        var modelData = {
            "category": "倾斜摄影",
            "info": "",
            "name": item.title,
            "layerInfo": item
        }

        var options = {};

        let request1 = fetch(onemapUrlConfig.DMS_URL + '/dms/content/selectContentList', {
            method: "POST",
            headers: {
                "Content-Type": "application/x-www-form-urlencoded",
                "token": localStorage.getItem("systemToken"),
            },
            mode: "cors",
            body: "columnId=" + modelData.layerInfo.id
        }).then(resp => resp.json())

        let request2 = fetch(onemapUrlConfig.DMS_URL + '/dms/content/getVectorData', {
            method: "POST",
            headers: {
                "Content-Type": "application/x-www-form-urlencoded",
                "token": localStorage.getItem("systemToken"),
            },
            mode: "cors",
            body: "columnId=" + modelData.layerInfo.id + "&token=" + localStorage.getItem("systemToken")
            // body: "columnId=" + modelData.layerInfo.id
        }).then(resp => resp.json())

        // 创建一个Promise数组
        const promises = [request1, request2]

        // 使用Promise.all来等待所有请求完成
        Promise.all(promises).then(responses => {
            // 所有请求都成功完成时，这里的代码会被执行
            // `responses`是一个数组，包含了所有请求的响应结果
            // console.log(responses);
            let styleRes = responses[0]
            let geojsonRes = responses[1]
            if (styleRes.code != 200) {
                ONEMAP.C.publisher.publish({
                    type: 'warning',
                    message: styleRes.message,
                }, 'noteBar::add');
                return
            }
            if (geojsonRes.code != undefined) {
                ONEMAP.C.publisher.publish({
                    type: 'warning',
                    message: geojsonRes.message,
                }, 'noteBar::add');
                return
            }
            if (geojsonRes.features.length == 0) {
                ONEMAP.C.publisher.publish({
                    type: 'warning',
                    message: "当前图层无数据！",
                }, 'noteBar::add');
                return
            }
            let style = JSON.parse(styleRes.content.data[0].c_style).style

            modelData.geo = geojsonRes
            let promise = add3DVECTOR(modelData, style);
            promise.then(function (guid) {
                options = {
                    action: "add",
                    DOM: {
                        guid: guid,
                        type: "VECTOR",
                        name: item.title,
                    },
                    mod: "VECTOR"
                }

                if (!guid) return

                ONEMAP.M.myLayers.myLayerControl(options); // 添加信息到“我的图层”
                ONEMAP.C.publisher.subscribe(layerAction, guid);
                openClick();
            })


        }).catch(error => {
            // 如果任何一个请求失败，这里的代码会被执行
            // console.error(error);
            ONEMAP.C.publisher.publish({
                type: 'warning',
                message: error,
            }, 'noteBar::add');
        });
    }

    function remove(options) {
        var guid = options.guid ? options.guid : "VECTOR--" + options.id;
        removeVECTOR({ guid: guid })
        ONEMAP.M.myLayers.myLayerControl({
            action: "remove",
            DOMid: guid
        }); // 移除数据层
        if (guid == modValue.nowOpenDialogLayerId) {
            closeEntityPropertiesDialog();
            modValue.nowOpenDialogLayerId = null;
        }

    }

    function layerAction(options) {
        if (options.guid.split("--")[0] == "VECTOR") {
            if (options.action == "remove") {
                // removeVECTOR(options.guid)
                remove(options)
                modValue.cancelSelected(Number(options.guid.split("--")[1]));
            } else if (options.action == "opacity") {
                opacityVECTOR(options)
            } else if (options.action == "controlShow") {
                controlShowVECTOR(options)
            } else if (options.action == "up" || options.action == "down") {

            } else if (options.action == "location") {
                locationVECTOR(options)
            }
        }
    }


    // 获取 svg 的元素源码
    function getAndSetSVGElement(svgUrl, color, token) {
        var oReq = new XMLHttpRequest();
        oReq.open("GET", svgUrl, false);
        oReq.setRequestHeader("Content-type", "application/json");
        // oReq.setRequestHeader("token", token);
        oReq.send(JSON.stringify());
        let parser = new DOMParser();
        let xmlDom = parser.parseFromString(oReq.responseText, "text/html");
        xmlDom.querySelector("g>path").setAttribute("fill", color);
        return new XMLSerializer().serializeToString(xmlDom.querySelector("svg"));
    }

    function svgToImg(svgStr) {
        const blob = new Blob([svgStr], { type: 'image/svg+xml;charset=utf-8' });
        // 创建一个 FileReader 对象来读取 Blob  
        const reader = new FileReader();
        reader.readAsDataURL(blob);
        // 当 FileReader 完成读取时，它会触发 'load' 事件  
        return new Promise((resolve) => {
            reader.onloadend = function () {
                resolve(reader.result)
            };
        })
    }

    // function reEncode(data) {
    //     return decodeURIComponent(
    //         encodeURIComponent(data).replace(/%([0-9A-F]{2})/g, (match, p1) => {
    //             const c = String.fromCharCode(`0x${p1}`);
    //             return c === '%' ? '%25' : c;
    //         })
    //     )
    // }


    function export2Base64Img(path, MIMEType, option) {
        // var serializer = new XMLSerializer();
        // var source = serializer.serializeToString(svgDom);
        // 方式一: unescape(encodeURIComponent(txt))
        // var path = "data:image/svg+xml;base64," + window.btoa(unescape(encodeURIComponent(source)));
        // 方式二: decodeURIComponent(encodeURIComponent(txt))
        // var path = "data:image/svg+xml;base64," + window.btoa(reEncode(source));
        var canvas = document.createElement("canvas"),
            context = canvas.getContext("2d"),
            img = new Image(),
            pixelRatio = window.devicePixelRatio || 1,
            _exportPath, handler
        option = option || {};

        // canvas.width = parseFloat(svgDom.getAttribute('width')); //  * pixelRatio
        // canvas.height = parseFloat(svgDom.getAttribute('height')); //  * pixelRatio 
        canvas.width = 500;
        canvas.height = 500;
        img.src = path;
        img.onload = function () {
            // 增加底色
            if (option.background) {
                context.beginPath();
                context.rect(0, 0, canvas.width, canvas.height);
                context.fillStyle = option.background;
                // context.fillStyle = "transparent"; 
                context.fill();
                context.closePath();
            }
            //
            context.drawImage(img, 0, 0);

            var marker = option.watermark || "";

            if (marker) {
                context.font = "18px 微软雅黑";
                context.fillStyle = "rgba(12, 0, 70, 0.5)";

                var textWidth = context.measureText(marker).width,
                    textHegith = 50,
                    pk = 1.2,
                    rotate = (option.rotation || -45) * Math.PI / 180,
                    sinReg = Math.sin(rotate),
                    cosReg = Math.cos(rotate),
                    width = Math.abs(canvas.width * cosReg) + Math.abs(canvas.height * sinReg),
                    height = Math.abs(canvas.height * cosReg) + Math.abs(canvas.width * sinReg);

                var xf = Math.ceil(width / textWidth * pk);
                var yf = Math.ceil(height / textHegith);

                context.rotate(rotate);

                for (var i = 0; i < yf; i++) {
                    for (var k = 0; k < xf; k++) {
                        context.fillText(marker, textWidth * k * pk - canvas.height * cosReg, textHegith * i)
                    }
                }
            }

            document.body.appendChild(canvas);
            _exportPath = canvas.toDataURL(MIMEType || 'image/png', 1)
            typeof handler === 'function' && handler(_exportPath)
            document.body.removeChild(canvas)
        }

        return new Promise(function (resolve, reject) {
            handler = resolve
        })
    }


    /**
     * 加载
     * @return {[type]} [description]
     */
    async function add3DVECTOR(options, style) {
        // var guid = map23DControl.buildGuid('VECTOR-3DData');
        var guid = "VECTOR--" + options.layerInfo.id
        let img = null;
        if (style.point) {
            // 获取svg
            let svg = getAndSetSVGElement(style.point.photo, style.point.color)
            // console.log(svg)
            img = await svgToImg(svg);
            // img = await export2Base64Img(img, "", {
            //     background: "#ffffff00"
            // });
        }

        Cesium.GeoJsonDataSource.load(options.geo).then(
            function (dataSource) {
                dataSource.name = guid;
                map3DViewer.map.dataSources.add(dataSource);
                modValue.VECTOR[guid] = dataSource;
                var entities = dataSource.entities.values;
                for (var i = 0; i < entities.length; i++) {
                    var entity = entities[i];
                    if (entity.billboard) {
                        entity.billboard = undefined;
                        // entity.point = new Cesium.PointGraphics({
                        //     show: true,
                        //     pixelSize: 15,
                        //     color: Cesium.Color.fromCssColorString("#aed0ff"),
                        //     outlineColor: Cesium.Color.fromCssColorString("#3388ff"),
                        //     outlineWidth: 2,
                        //     heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
                        //     scaleByDistance: new Cesium.NearFarScalar(10000, 1, 20000, 0.5),
                        //     // translucencyByDistance: new Cesium.NearFarScalar(1500, 1, 20000, 0.2),
                        //     // distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0, 20000)
                        // })
                        entity.billboard = new Cesium.BillboardGraphics({
                            image: img,
                            width: 50,
                            height: 50,
                            pixelOffset: new Cesium.Cartesian2(0, -25),
                            heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
                            // scaleByDistance: new Cesium.NearFarScalar(10000, 1, 20000, 0.75),
                        })
                    }
                    if (entity.polyline) {
                        entity.polyline.width = style.polyline.width;
                        entity.polyline.material = Cesium.Color.fromCssColorString(style.polyline.color).withAlpha(style.polyline.alpha); // 颜色
                    }
                    if (entity.polygon) {
                        entity.polygon.height = 0.2;
                        entity.polygon.outline = true; // 边框是否显示
                        entity.polygon.outlineColor = Cesium.Color.fromCssColorString(style.polygon.outerColor); // 边框颜色
                        entity.polygon.outlineWidth = style.polygon.outerWidth; // 边框宽度
                        entity.polygon.material = Cesium.Color.fromCssColorString(style.polygon.innerColor).withAlpha(style.polygon.alpha);// 填充色
                    }
                    entity.layerId = guid
                    entity.mod = "vectorMod"
                }

                var extentR = turf.bbox(options.geo);
                map3DViewer.map.camera.flyTo({
                    destination: Cesium.Rectangle.fromDegrees(extentR[0] - 0.04, extentR[1] - 0.04, extentR[2] + 0.04, extentR[3] + 0.04),
                });
                modValue.VECTOR[guid + "_extent"] = extentR;
            }
        );
        return guid;
    };

    function removeVECTOR(options) {
        map3DViewer.map.dataSources.remove(map3DViewer.map.dataSources.getByName(options.guid)[0]);
        delete modValue.VECTOR[options.guid];
        delete modValue.VECTOR[options.guid + "_extent"];
        if (Object.getOwnPropertyNames(modValue.VECTOR).length == 0) {
            closeClick();
        }
    }

    function opacityVECTOR(options) {
        modValue.VECTOR[options.guid].entities.values.map(function (entity) {
            if (entity.point) {
                entity.point = new Cesium.PointGraphics({
                    show: true,
                    pixelSize: 15,
                    heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
                    color: Cesium.Color.fromCssColorString("#aed0ff").withAlpha(options.options.opacity),
                    outlineColor: Cesium.Color.fromCssColorString("#3388ff").withAlpha(options.options.opacity),
                    outlineWidth: 2,
                    scaleByDistance: new Cesium.NearFarScalar(10000, 1, 20000, 0.5),
                })
            }
            if (entity.polyline) {
                entity.polyline.material = Cesium.Color.fromCssColorString("#3388ff").withAlpha(options.options.opacity); // 颜色
            }
            if (entity.polygon) {
                entity.polygon.outlineColor = Cesium.Color.fromCssColorString("#3388ff").withAlpha(options.options.opacity); // 边框颜色 
                entity.polygon.material = Cesium.Color.fromCssColorString("#aed0ff").withAlpha(options.options.opacity);// 填充色
            }
        })
    }

    function controlShowVECTOR(options) {
        if (options.options.show)
            modValue.VECTOR[options.guid].show = true
        if (!options.options.show)
            modValue.VECTOR[options.guid].show = false
    }

    function locationVECTOR(options) {
        let extentR = modValue.VECTOR[options.guid + "_extent"]
        map3DViewer.map.camera.flyTo({
            destination: Cesium.Rectangle.fromDegrees(extentR[0], extentR[1], extentR[2], extentR[3]),
        });
    }

    function openClick() {
        if (modValue.handler) return;
        // 绑定点击事件 
        modValue.handler = new Cesium.ScreenSpaceEventHandler(map3DViewer.map.canvas);
        modValue.handler.setInputAction(function (movement) {
            if (ONEMAP.M.toolsBar.status.toolsShow) return;
            var pick = map3DViewer.map.scene.pick(movement.position); // 拾取鼠标所在的entity
            if (Cesium.defined(pick)) {
                let entity = pick.id;
                if (entity.mod && entity.mod == "vectorMod") {
                    let properties = entity.properties.getValue();
                    openEntityPropertiesDialog(properties, entity.layerId);
                }
            }
        }, Cesium.ScreenSpaceEventType.LEFT_CLICK)
    }
    function closeClick() {
        if (modValue.handler) {
            modValue.handler.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_CLICK)
            modValue.handler = null;
        }
    }

    function openEntityPropertiesDialog(properties, layerId) {
        if ($("#vectorInfoModal").length != 1) {
            $('body').append(dialogLayout);
            //拖拽
            $("#vectorInfoModal .popup-ct").dragmove($('#vectorInfoModal'));
        } else {
            $("#vectorInfoForm table").empty();
        }
        $("#vectorInfoModal .title").text(properties.Name)
        let html = `<tr><td><p>字段</p></td><td>值</td></tr>`
        $("#vectorInfoForm table").append(html)
        Object.getOwnPropertyNames(properties).map(function (field) {
            let html = `<tr><td><p>${field}</p></td><td>${properties[field]}</td></tr>`
            $("#vectorInfoForm table").append(html)
        })
        modValue.nowOpenDialogLayerId = layerId
        $("#vectorInfoModal .close").bind('click', function () {
            closeEntityPropertiesDialog();
        });
    }

    function closeEntityPropertiesDialog() {
        $("#vectorInfoModal").remove()
    }

    return ONEMAP.M.threeData = {
        add: add,
        remove: remove,
    }
});