arcgis for javascript 示例(五)如何使用3D測量微件?

上本地數據的效果圖 

上代碼:有個很簡單的方法,只需要把自己的ID加進去

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
    <title>Measurement in 3D - 4.15</title>

    <style>
        html,
        body,
        #viewDiv {
            padding: 0;
            margin: 0;
            height: 100%;
            width: 100%;
        }

        #topbar {
            background: #fff;
            padding: 10px;
        }

        .action-button {
            font-size: 16px;
            background-color: transparent;
            border: 1px solid #d3d3d3;
            color: #6e6e6e;
            height: 32px;
            width: 32px;
            text-align: center;
            box-shadow: 0 0 1px rgba(0, 0, 0, 0.3);
        }

        .action-button:hover,
        .action-button:focus {
            background: #0079c1;
            color: #e4e4e4;
        }

        .active {
            background: #0079c1;
            color: #e4e4e4;
        }
    </style>

    <link rel="stylesheet" href="https://esriwh.giscloud.com/arcgis_js_api/library/4.15/esri/themes/light/main.css" />
    <script src="https://esriwh.giscloud.com/arcgis_js_api/library/4.15/init.js"></script>

    <script>
        require([
            "esri/WebScene",
            "esri/views/SceneView",
            "esri/widgets/DirectLineMeasurement3D",
            "esri/widgets/AreaMeasurement3D"
        ], function (
            WebScene,
            SceneView,
            DirectLineMeasurement3D,
            AreaMeasurement3D
        ) {
            var activeWidget = null;

            // 加載本地webscene
            var webscene = new WebScene({
                portalItem: {
                    id: "ca8ec44c45564d6d9fa7a1209cc66b7e"
                }
            });

            // 創建三維場景視圖 scene view
            var view = new SceneView({
                container: "viewDiv",
                map: webscene
            });

            // 爲測量微件添加 toolbar 
            view.ui.add("topbar", "top-right");
            //測量距離
            document
                .getElementById("distanceButton")
                .addEventListener("click", function () {
                    setActiveWidget(null);
                    if (!this.classList.contains("active")) {
                        setActiveWidget("distance");
                    } else {
                        setActiveButton(null);
                    }
                });
           //測量面積
            document
                .getElementById("areaButton")
                .addEventListener("click", function () {
                    setActiveWidget(null);
                    if (!this.classList.contains("active")) {
                        setActiveWidget("area");
                    } else {
                        setActiveButton(null);
                    }
                });

            function setActiveWidget(type) {
                switch (type) {
                    case "distance":
                        activeWidget = new DirectLineMeasurement3D({
                            view: view
                        });

                        // skip the initial 'new measurement' button
                        activeWidget.viewModel.newMeasurement();

                        view.ui.add(activeWidget, "top-right");
                        setActiveButton(document.getElementById("distanceButton"));
                        break;
                    case "area":
                        activeWidget = new AreaMeasurement3D({
                            view: view
                        });

                        // 新測量按鈕
                        activeWidget.viewModel.newMeasurement();

                        view.ui.add(activeWidget, "top-right");
                        setActiveButton(document.getElementById("areaButton"));
                        break;
                    case null:
                        if (activeWidget) {
                            view.ui.remove(activeWidget);
                            activeWidget.destroy();
                            activeWidget = null;
                        }
                        break;
                }
            }

            function setActiveButton(selectedButton) {
                // focus the view to activate keyboard shortcuts for sketching
                view.focus();
                var elements = document.getElementsByClassName("active");
                for (var i = 0; i < elements.length; i++) {
                    elements[i].classList.remove("active");
                }
                if (selectedButton) {
                    selectedButton.classList.add("active");
                }
            }
        });
    </script>
</head>

<body>
    <div id="viewDiv"></div>
    <div id="topbar">
        <button class="action-button esri-icon-measure-line" id="distanceButton" type="button"
            title="測長度"></button>
        <button class="action-button esri-icon-measure-area" id="areaButton" type="button"
            title="測面積"></button>
    </div>
</body>

</html>

 

發表評論
所有評論
還沒有人評論,想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.
相關文章