Graphics overlay (dictionary renderer) 3D

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// [WriteFile Name=GODictionaryRenderer_3D, Category=DisplayInformation]
// [Legal]
// Copyright 2016 Esri.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

import QtQuick
import QtQuick.Controls
import QtQuick.XmlListModel
import Esri.ArcGISRuntime
import Esri.ArcGISExtras

Rectangle {
    width: 800
    height: 600

    readonly property url dataPath: {
        Qt.platform.os === "ios" ?
                    System.writableLocationUrl(System.StandardPathsDocumentsLocation) + "/ArcGIS/Runtime/Data" :
                    System.writableLocationUrl(System.StandardPathsHomeLocation) + "/ArcGIS/Runtime/Data"
    }

    /**
     * Create SceneView that contains a Scene with the Imagery Basemap, as well as a GraphicsOverlay
     * for the military symbols.
     */
    SceneView {
        id: sceneView
        anchors.fill: parent

        Component.onCompleted: {
            // Set the focus on SceneView to initially enable keyboard navigation
            forceActiveFocus();
        }

        Scene {
            id: scene
            Basemap {
                initStyle: Enums.BasemapStyleArcGISImageryStandard
            }
            Surface {
                ArcGISTiledElevationSource {
                    url: "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"
                }
            }
        }
        GraphicsOverlay {
            id: graphicsOverlay
            renderingMode: Enums.GraphicsRenderingModeDynamic

            DictionaryRenderer {
                dictionarySymbolStyle: Factory.DictionarySymbolStyle.createFromFile(dataPath + "/styles/arcade_style/mil2525d.stylx")
            }
        }
    }

    ProgressBar {
        id: progressBar_loading
        anchors {
            horizontalCenter: parent.horizontalCenter
            bottom: parent.bottom
            margins: 5
        }
        indeterminate: true
    }

    // Use XmlListModel to parse the XML messages file.
    XmlListModel {
        id: xmlParser
        source: dataPath + "/xml/arcade_style/Mil2525DMessages.xml"
        query: "/messages/message"

        // These are the fields we need for MIL-STD-2525D symbology.
        XmlRole { name: "_control_points"; query: "_control_points/string()" }
        XmlRole { name: "_wkid"; query: "_wkid/number()" }
        XmlRole { name: "identity"; query: "identity/number()" }
        XmlRole { name: "symbolset"; query: "symbolset/number()" }
        XmlRole { name: "symbolentity"; query: "symbolentity/number()" }
        XmlRole { name: "echelon"; query: "echelon/number()" }
        XmlRole { name: "specialentitysubtype"; query: "specialentitysubtype/number()" }
        XmlRole { name: "indicator"; query: "indicator/number()" }
        XmlRole { name: "modifier2"; query: "modifier2/number()" }
        XmlRole { name: "uniquedesignation"; query: "uniquedesignation/string()" }
        XmlRole { name: "additionalinformation"; query: "additionalinformation/string()" }

        onStatusChanged: {
            if (status === XmlListModel.Ready) {
                let bbox = null;
                for (let i = 0; i < count; i++) {
                    const element = get(i);
                    let wkid = element._wkid;
                    if (!wkid) {
                        // If _wkid was absent, use WGS 1984 (4326) by default.
                        wkid = 4326;
                    }
                    const pointStrings = element._control_points.split(";");
                    const sr = ArcGISRuntimeEnvironment.createObject("SpatialReference", { wkid: wkid });

                    let geom = null;
                    if (pointStrings.length === 1) {
                        // It's a point
                        const pointBuilder = ArcGISRuntimeEnvironment.createObject("PointBuilder", {
                                                                                       spatialReference: sr
                                                                                   });
                        const coords = pointStrings[0].split(",");
                        pointBuilder.setXY(coords[0], coords[1]);
                        geom = pointBuilder.geometry;
                    }

                    if (geom) {
                        /**
                         * Get rid of _control_points and _wkid. They are not needed in the graphic's
                         * attributes.
                         */
                        element._control_points = undefined;
                        element._wkid = undefined;

                        const graphic = ArcGISRuntimeEnvironment.createObject("Graphic", {
                                                                                  geometry: geom
                                                                              });
                        graphic.attributes.attributesJson = element;
                        graphicsOverlay.graphics.append(graphic);

                        if (bbox) {
                            bbox = GeometryEngine.unionOf(bbox, geom);
                        } else {
                            bbox = geom;
                        }
                    }
                }

                // Zoom to graphics
                if (bbox) {
                    bbox = GeometryEngine.project(bbox.extent, scene.spatialReference);

                    /**
                     * Create a camera directly above the center of the features, and then rotate that
                     * camera around the center to tip it.
                     */
                    let camera = ArcGISRuntimeEnvironment.createObject("Camera", {
                                                                           location: bbox.extent.center,
                                                                           heading: 0,
                                                                           pitch: 0,
                                                                           roll: 0,
                                                                           distance: 15000
                                                                       });
                    camera = camera.rotateAround(bbox.extent.center, 0, 70, 0);
                    sceneView.setViewpointCameraAndWait(camera);
                }
                progressBar_loading.visible = false;
            }
        }
    }
}