Display 3D labels in scene

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 // [WriteFile Name=Display3DLabelsInScene, Category=Scenes] // [Legal] // Copyright 2021 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]  #ifdef PCH_BUILD #include "pch.hpp" #endif // PCH_BUILD  // sample headers #include "Display3DLabelsInScene.h"  // ArcGIS Maps SDK headers #include "ArcadeLabelExpression.h" #include "Error.h" #include "FeatureLayer.h" #include "GroupLayer.h" #include "LabelDefinition.h" #include "LabelDefinitionListModel.h" #include "LayerListModel.h" #include "Scene.h" #include "SceneQuickView.h" #include "ServiceTypes.h" #include "TextSymbol.h"  using namespace Esri::ArcGISRuntime;  Display3DLabelsInScene::Display3DLabelsInScene(QObject* parent /* = nullptr */):  QObject(parent),  m_scene(new Scene(QUrl("https://www.arcgis.com/home/item.html?id=850dfee7d30f4d9da0ebca34a533c169"), this)) {  connect(m_scene, &Scene::doneLoading, this, [this]()  {  for (Layer* layer : *m_scene->operationalLayers())  {  if (layer->name() == "Gas")  {  // The gas layer is a GroupLayer type consisting of Layer types.  // Labels can only be displayed on FeatureLayer types, so we must first convert it to a FeatureLayer class.  GroupLayer* gasGroupLayer = dynamic_cast<GroupLayer*>(layer);  if (!gasGroupLayer)  continue;   FeatureLayer* gasFeatureLayer = dynamic_cast<FeatureLayer*>(gasGroupLayer->layers()->first());  if (gasFeatureLayer)  display3DLabelsOnFeatureLayer(gasFeatureLayer);   break;  }  }  }); }  void Display3DLabelsInScene::display3DLabelsOnFeatureLayer(FeatureLayer* featureLayer) {  TextSymbol* textSymbol = new TextSymbol(this);  textSymbol->setColor(QColor("#ffa500"));  textSymbol->setHaloColor(QColor(Qt::white));  textSymbol->setHaloWidth(2.0);  textSymbol->setSize(14.0);   ArcadeLabelExpression* labelExpression = new ArcadeLabelExpression("Text($feature.INSTALLATIONDATE, 'D MMM Y')", this);  LabelDefinition* labelDefinition = new LabelDefinition(labelExpression, textSymbol, this);  labelDefinition->setPlacement(LabelingPlacement::LineAboveAlong);  labelDefinition->setUseCodedValues(true);   featureLayer->labelDefinitions()->clear();  featureLayer->labelDefinitions()->append(labelDefinition);  featureLayer->setLabelsEnabled(true); }  Display3DLabelsInScene::~Display3DLabelsInScene() = default;  void Display3DLabelsInScene::init() {  // Register classes for QML  qmlRegisterType<SceneQuickView>("Esri.Samples", 1, 0, "SceneView");  qmlRegisterType<Display3DLabelsInScene>("Esri.Samples", 1, 0, "Display3DLabelsInSceneSample"); }  SceneQuickView* Display3DLabelsInScene::sceneView() const {  return m_sceneView; }  // Set the view (created in QML) void Display3DLabelsInScene::setSceneView(SceneQuickView* sceneView) {  if (!sceneView || sceneView == m_sceneView)  return;   m_sceneView = sceneView;  m_sceneView->setArcGISScene(m_scene);   emit sceneViewChanged(); }