Display a scene

Before starting this tutorial:

1. You need an ArcGIS Location Platform or ArcGIS Online account.

2. Your system meets the system requirements.

3. The ArcGIS Maps SDK for Qt, version 300.0.0 or later is installed.

4. The Qt 6.8.2 software development framework or later is installed.

Option 1: Develop the code

Create a new ArcGIS Maps Qt Creator Project

1. Start Qt Creator.

2. In the top menu bar, click File > New Project.

3. In the New Project dialog, in the left frame, under Projects, select ArcGIS. Then select the ArcGIS Maps 300.0.0 Qt Quick C++ app project template (or a later version) and click Choose. This will launch the template wizard.

4. In the Project Location template, name your project Display_a_scene. You can specify your own "create in" location for where the project will be created or leave the default. Click Next.

5. In the Define Build System template, select qmake for your build system. Click Next.

6. In the Define Project Details template, give this app a description or leave as is. For the GeoView type dropdown menu, select Global 3D Scene. For the ArcGIS Online Basemap dropdown menu, select Imagery. For the ArcGIS Online Elevation dropdown menu, select Terrain 3D. Do not supply an API Key (also called an access token) at this time, leave it blank. You will do this in another step when you set your developer credentials. Click Next.

7. In the Kit Selection template, check on the kit you previously set up when you installed Qt (Desktop Qt 6.8.2 MSVC2022 64bit or higher required). Click Next.

8. In the Project Management template, the option to Add as a subproject to root project is only available if you have already created a root project. If you have a version control system set up, you can select it in the dropdown but it is not needed to complete this tutorial. Click Finish to complete the template wizard.

Display a scene

1. In the project Headers folder of Qt Creator, double-click the file Display_a_scene.h to open it.

2. Add the declaration void setupScene(); under private:. Then save the file.

   Display_a_scene.h

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   private:
       Esri::ArcGISRuntime::SceneQuickView* sceneView() const;
       void setSceneView(Esri::ArcGISRuntime::SceneQuickView* sceneView);
   
       Esri::ArcGISRuntime::Scene* m_scene = nullptr;
       Esri::ArcGISRuntime::SceneQuickView* m_sceneView = nullptr;
   
       void setupScene();
   
   };
   
   #endif // DISPLAY_A_SCENE_H

3. In the project Sources folder of Qt Creator, open the Display_a_scene.cpp file. This app will use a Camera object to display the scene. Add the following #include statement.

   Display_a_scene.cpp

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   #include "Display_a_scene.h"
   
   
   #include "ArcGISTiledElevationSource.h"
   
   #include "Camera.h"
   
   #include "ElevationSourceListModel.h"
   #include "MapTypes.h"
   
   #include "Scene.h"
   #include "SceneQuickView.h"
   
   #include "Surface.h"
   
   #include <QUrl>
   

4. Add the following line of code in the Display_a_scene constructor to call to the new method, setupScene, that you will create.

   Display_a_scene.cpp

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   Display_a_scene::Display_a_scene(QObject* parent /* = nullptr */):
   
       QObject(parent),
   
       m_scene(new Scene(BasemapStyle::ArcGISImagery, this))
   
   {
   
       // create a new elevation source from Terrain3D rest service
       ArcGISTiledElevationSource* elevationSource = new ArcGISTiledElevationSource(
                   QUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"), this);
   
       // add the elevation source to the scene to display elevation
       m_scene->baseSurface()->elevationSources()->append(elevationSource);
   
       setupScene();
   
   
   }
   

5. Create a new method named setupScene, near the end of the file.

   Display_a_scene.cpp

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   void Display_a_scene::setupScene()
   {
   
   }

6. Within the setupScene() method, create an ElevationSource instance to define the base surface for the scene. An elevation source can define a surface with 3D terrain in a scene. Without an elevation source, the default globe surface is used to display the scene.

   Display_a_scene.cpp

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   void Display_a_scene::setupScene()
   {
   
     ArcGISTiledElevationSource* elevationSource = new ArcGISTiledElevationSource(QUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"), this);
   
   }

7. Continuing within the setupScene() method, create a Surface instance and append the elevationSource to it.

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void Display_a_scene::setupScene()
{

  ArcGISTiledElevationSource* elevationSource = new ArcGISTiledElevationSource(QUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"), this);

  Surface* elevationSurface = new Surface(this);
  elevationSurface->elevationSources()->append(elevationSource);

}

1. Concluding the code changes within the setupScene() method, set the ElevationExaggeration value (to improve elevation visibility), and then set the elevationSurface for m_scene.

   Display_a_scene.cpp

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   void Display_a_scene::setupScene()
   {
   
     ArcGISTiledElevationSource* elevationSource = new ArcGISTiledElevationSource(QUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"), this);
   
     Surface* elevationSurface = new Surface(this);
     elevationSurface->elevationSources()->append(elevationSource);
   
     elevationSurface->setElevationExaggeration(2.5);
     m_scene->setBaseSurface(elevationSurface);
   
   }

2. The next code change will be within the setSceneView(SceneQuickView* sceneView) function, to create a Camera with the given parameters.

   The position from which you view the scene from is defined by a Camera. The following properties of the camera are used to define an observation point in the scene:

   • latitude: The measurement of distance north or south of the Equator
   • longitude: The measurement east or west of the prime meridian
   • altitude: The distance above sea level
   • heading: Azimuth of the camera's direction
   • pitch: Up and down angle
   • roll: Side-to-side angle
   Display_a_scene.cpp

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   // Set the view (created in QML)
   void Display_a_scene::setSceneView(SceneQuickView* sceneView)
   {
       if (!sceneView || sceneView == m_sceneView)
       {
           return;
       }
   
       m_sceneView = sceneView;
       m_sceneView->setArcGISScene(m_scene);
   
       constexpr double latitude = 33.909;
       constexpr double longitude = -118.805;
       constexpr double altitude = 5330.0;
       constexpr double heading = 355.0;
       constexpr double pitch = 72.0;
       constexpr double roll = 0.0;
       const Camera sceneCamera(latitude, longitude, altitude, heading, pitch, roll);
       m_sceneView->setViewpointCameraAndWait(sceneCamera);
   
       emit sceneViewChanged();
   }
   

Set developer credentials

To allow your app users to access ArcGIS location servicesArcGIS Location Services, also referred to as Location Services, are services hosted by Esri that provide geospatial functionality for developing mapping applications. They include the ArcGIS Basemap Styles service, ArcGIS Static Basemap Tiles service, ArcGIS Places service, ArcGIS Geocoding service, ArcGIS Routing service, ArcGIS GeoEnrichment service, and ArcGIS Elevation service. An ArcGIS Location Platform or ArcGIS Online account is required to use the services.Learn more, use the developer credentials that you created in the Set up authentication step to authenticate requests for resources.

For the final steps of this tutorial, click the tab below for either API key authentication or User authentication to use the correct authentication pattern to run the application.

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ARCGIS_RUNTIME_VERSION = 300.0.0
include($$PWD/arcgisruntime.pri)

# TODO: You need to replace the <path_to_toolkit_repo> with a valid location where the Qt Toolkit
# resides on your system, example: C:/arcgis-maps-sdk-toolkit-qt/uitools/toolkitcpp/toolkitcpp.pri
# This block determines whether you've cloned your toolkit
PATH_TO_TOOLKIT = "<path_to_toolkit_repo>/uitools/toolkitcpp/toolkitcpp.pri"

exists($${PATH_TO_TOOLKIT}) {
  message("Toolkit found")
  DEFINES += TOOLKIT_FOUND

  # include the toolkitcpp.pri, which contains all the toolkit resources
  include($${PATH_TO_TOOLKIT})

  qtHaveModule(webenginequick) {
    QT += webenginequick
  }
} else {
  message("Toolkit not found in provided path. Either set PATH_TO_TOOLKIT or use an API Key")
}

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#include "Display_a_scene.h"

#include "ArcGISRuntimeEnvironment.h"
#include "SceneQuickView.h"

#include <QDir>
#include <QGuiApplication>
#include <QSurfaceFormat>
#include <QQmlApplicationEngine>

#ifdef TOOLKIT_FOUND
  #include <QtWebEngineQuick/QtWebEngineQuick>
  #include "Esri/ArcGISRuntime/Toolkit/register.h"
#endif // TOOLKIT_FOUND

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using namespace Esri::ArcGISRuntime;

int main(int argc, char *argv[])
{
#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)
    // Linux requires 3.2 OpenGL Context
    // in order to instance 3D symbols
    QSurfaceFormat fmt = QSurfaceFormat::defaultFormat();
    fmt.setVersion(3, 2);
    QSurfaceFormat::setDefaultFormat(fmt);
#endif

    #ifdef TOOLKIT_FOUND
        // Initialize the QtWebEngineQuick to use the web based login dialog.
        QtWebEngineQuick::initialize();
    #endif //TOOLKIT_FOUND

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    // Register the Display_a_scene (QQuickItem) for QML
    qmlRegisterType<Display_a_scene>("Esri.Display_a_scene", 1, 0, "Display_a_scene");

    // Initialize application view
    QQmlApplicationEngine engine;

    #ifdef TOOLKIT_FOUND
        // Register the toolkit
        Esri::ArcGISRuntime::Toolkit::registerComponents(engine);
    #endif //TOOLKIT_FOUND

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    // Declare the C++ instance which creates the scene etc. and supply the view
    Display_a_scene {
        id: model
        sceneView: view
    }

    // Create an Authenticator as a Component, so it can be created dynamically.
    QtObject {
        id: authenticator
        property Component component: null

        function applyComponentStatus() {
            if (!component)
                return;

            if (component.status === Component.Ready) {
                loader.sourceComponent = component;
            } else if (component.status === Component.Error) {
                console.log("Toolkit not found in provided path. Either set PATH_TO_TOOLKIT in the .pro or use an API Key.");
            }
        }

        Component.onCompleted: {
            component = Qt.createComponent("Esri.ArcGISRuntime.Toolkit", "Authenticator", Component.Asynchronous, authenticator);
            component.statusChanged.connect(applyComponentStatus);
            applyComponentStatus();
        }
    }

    // loader to load the Authenticator component
    Loader {
        id: loader
        anchors.centerIn: parent
    }

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#include "Display_a_scene.h"


#include "ArcGISTiledElevationSource.h"

#include "Camera.h"

#include "ElevationSourceListModel.h"
#include "MapTypes.h"

#include "Scene.h"
#include "SceneQuickView.h"

#include "Surface.h"

#include <QUrl>

#ifdef TOOLKIT_FOUND
  #include "OAuthUserConfigurationManager.h"

  #include "Authentication/OAuthUserConfiguration.h"

  using namespace Esri::ArcGISRuntime::Authentication;
#endif //TOOLKIT_FOUND

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Display_a_scene::Display_a_scene(QObject* parent /* = nullptr */):

    QObject(parent),

    m_scene(new Scene(BasemapStyle::ArcGISImagery, this))

{

    // create a new elevation source from Terrain3D rest service
    ArcGISTiledElevationSource* elevationSource = new ArcGISTiledElevationSource(
                QUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"), this);

    // add the elevation source to the scene to display elevation
    m_scene->baseSurface()->elevationSources()->append(elevationSource);

    setupScene();


#ifdef TOOLKIT_FOUND

    // Define the Redirect URL string obtained when creating the OAuth credentials.
    // TODO: You need to replace the "REDIRECT_URL" with your own valid string,
    // ex: "urn:ietf:wg:oauth:2.0:oob"
    const auto qStringRedirectUrl = QString{"REDIRECT_URL"};

    // Define the URL of the portal to authenticate with.
    const QUrl qUrlPortal = QUrl{"https://www.arcgis.com/"};

    // Define a unique identifier associated with an application registered with the
    // portal that assists with client/server OAuth authentication.
    // TODO: You need to replace the "CLIENT_ID" with your own valid string.
    const QString qStringClientId = QString{"CLIENT_ID"};

    // Create a new OAuth user configuration using: the Url to mapping web service, the Client ID
    // string, and the Redirect Url string.
    auto* oAuthUserConfiguration = new OAuthUserConfiguration(qUrlPortal, qStringClientId,
                                                              qStringRedirectUrl, this);

    // Call the Toolkit's OAuthUserConfigurationManager static `addConfiguration`
    // method to use the OAuth dialog. This will tell the Authenticator to use OAuth for the provided configuration.
    Toolkit::OAuthUserConfigurationManager::addConfiguration(oAuthUserConfiguration);
#endif // TOOLKIT_FOUND

}

Press Ctrl + R to run the app.

You should see a sceneA scene is a collection of layers that are displayed in 3D. It is typically composed of a basemap layer, data layers, and 3D data.Learn more with the topographic basemap layerA basemap layer is the layer in a map or scene that displays basemap data. The data source for a basemap layer is typically a basemap service.Learn more centered on the Santa Monica Mountains in California. Double-click, drag, and scroll the mouse wheel over the scene view to explore the scene.

Option 2: Download the solution

1. Click the Download solution link under Solution and unzip the file to a location on your machine.

2. Open the .pro project file in Qt Creator.

Since the downloaded solution does not contain authentication credentials, you must add the developer credentials that you created in the Set up authentication section.

Set developer credentials in the solution

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ARCGIS_RUNTIME_VERSION = 300.0.0
include($$PWD/arcgisruntime.pri)

# TODO: You need to replace the <path_to_toolkit_repo> with a valid location where the Qt Toolkit
# resides on your system, example: C:/arcgis-maps-sdk-toolkit-qt/uitools/toolkitcpp/toolkitcpp.pri
# This block determines whether you've cloned your toolkit
PATH_TO_TOOLKIT = "<path_to_toolkit_repo>/uitools/toolkitcpp/toolkitcpp.pri"

exists($${PATH_TO_TOOLKIT}) {
  message("Toolkit found")
  DEFINES += TOOLKIT_FOUND

  # include the toolkitcpp.pri, which contains all the toolkit resources
  include($${PATH_TO_TOOLKIT})

  qtHaveModule(webenginequick) {
    QT += webenginequick
  }
} else {
  message("Toolkit not found in provided path. Either set PATH_TO_TOOLKIT or use an API Key")
}

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#ifdef TOOLKIT_FOUND

    // Define the Redirect URL string obtained when creating the OAuth credentials.
    // TODO: You need to replace the "REDIRECT_URL" with your own valid string,
    // ex: "urn:ietf:wg:oauth:2.0:oob"
    const auto qStringRedirectUrl = QString{"REDIRECT_URL"};

    // Define the URL of the portal to authenticate with.
    const QUrl qUrlPortal = QUrl{"https://www.arcgis.com/"};

    // Define a unique identifier associated with an application registered with the
    // portal that assists with client/server OAuth authentication.
    // TODO: You need to replace the "CLIENT_ID" with your own valid string.
    const QString qStringClientId = QString{"CLIENT_ID"};

    // Create a new OAuth user configuration using: the Url to mapping web service, the Client ID
    // string, and the Redirect Url string.
    auto* oAuthUserConfiguration = new OAuthUserConfiguration(qUrlPortal, qStringClientId,
                                                              qStringRedirectUrl, this);

    // Call the Toolkit's OAuthUserConfigurationManager static `addConfiguration`
    // method to use the OAuth dialog. This will tell the Authenticator to use OAuth for the provided configuration.
    Toolkit::OAuthUserConfigurationManager::addConfiguration(oAuthUserConfiguration);
#endif // TOOLKIT_FOUND

Run the app

Press Ctrl + R to run the app.

You should see a sceneA scene is a collection of layers that are displayed in 3D. It is typically composed of a basemap layer, data layers, and 3D data.Learn more with the topographic basemap layerA basemap layer is the layer in a map or scene that displays basemap data. The data source for a basemap layer is typically a basemap service.Learn more centered on the Santa Monica Mountains in California. Double-click, drag, and scroll the mouse wheel over the scene view to explore the scene.