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Display utility associations | ArcGIS Maps SDK for Qt

View on GitHub Sample viewer app

Create graphics for utility associations in a utility network.

Visualizing utility associations can help you to better understand trace results and the topology of your utility network. For example, connectivity associations allow you to model connectivity between two junctions that don't have geometric coincidence (are not in the same location); structural attachment associations allow you to model equipment that may be attached to structures; and containment associations allow you to model features contained within other features.

Pan and zoom around the map. Observe graphics that show utility associations between junctions.

1. Create and load a Map with a web map item URL that contains a UtilityNetwork.
2. Get and load the first UtilityNetwork from the web map.
3. Create a GraphicsOverlay for the utility associations.
4. Add connection for the ViewpointChanged signal of the MapView.
5. When the sample starts and every time the viewpoint changes, do the following steps.
6. Get the geometry of the mapview's extent using currentViewpoint(ViewpointType::BoundingGeometry).targetGeometry.extent.
7. Get the associations that are within the current extent using associationsAsync(extent).
8. Get the UtilityAssociationType for each association.
9. Create a Graphic using the Geometry property of the association and a preferred symbol.
10. Add the graphic to the graphics overlay.

• GraphicsOverlay
• ServiceGeodatabase
• UtilityAssociation
• UtilityAssociationType
• UtilityNetwork

The Naperville electrical web map contains a utility network used to run the subnetwork-based trace in this sample.

Using utility network on ArcGIS Enterprise 10.8 requires an ArcGIS Enterprise member account licensed with the Utility Network user type extension. Please refer to the utility network services documentation.

Credentials:

• Username: viewer01
• Password: I68VGU^nMurF

associating, association, attachment, connectivity, containment, relationships

DisplayUtilityAssociations.cpp DisplayUtilityAssociations.cpp DisplayUtilityAssociations.h SymbolImageProvider.cpp SymbolImageProvider.h DisplayUtilityAssociations.qml

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// [WriteFile Name=DisplayUtilityAssociations, Category=UtilityNetwork]
// [Legal]
// Copyright 2020 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 "DisplayUtilityAssociations.h"
#include "SymbolImageProvider.h"

// ArcGIS Maps SDK headers
#include "ArcGISRuntimeEnvironment.h"
#include "Authentication/AuthenticationManager.h"
#include "Authentication/ArcGISAuthenticationChallenge.h"
#include "Authentication/TokenCredential.h"
#include "ArcGISFeatureTable.h"
#include "AttributeListModel.h"
#include "Envelope.h"
#include "ErrorException.h"
#include "FeatureLayer.h"
#include "Graphic.h"
#include "GraphicListModel.h"
#include "GraphicsOverlay.h"
#include "GraphicsOverlayListModel.h"
#include "LayerListModel.h"
#include "Map.h"
#include "MapQuickView.h"
#include "MapTypes.h"
#include "Point.h"
#include "SimpleLineSymbol.h"
#include "SpatialReference.h"
#include "SymbolTypes.h"
#include "UniqueValue.h"
#include "UniqueValueRenderer.h"
#include "UtilityAssociation.h"
#include "UtilityNetwork.h"
#include "UtilityNetworkDefinition.h"
#include "UtilityNetworkListModel.h"
#include "UtilityNetworkTypes.h"
#include "Viewpoint.h"

// Qt headers
#include <QFuture>
#include <QImage>
#include <QList>
#include <QQmlContext>
#include <QUuid>

using namespace Esri::ArcGISRuntime;
using namespace Esri::ArcGISRuntime::Authentication;

namespace
{
const int maxScale = 2000;
constexpr int targetScale = 50;
}

DisplayUtilityAssociations::DisplayUtilityAssociations(QObject* parent /* = nullptr */):
  ArcGISAuthenticationChallengeHandler(parent),
  m_map(new Map(QUrl("https://sampleserver7.arcgisonline.com/portal/home/item.html?id=be0e4637620a453584118107931f718b"), this)),
  m_associationsOverlay(new GraphicsOverlay(this)),
  m_attachmentSymbol(new SimpleLineSymbol(SimpleLineSymbolStyle::Dot, Qt::green, 5, this)),
  m_connectivitySymbol(new SimpleLineSymbol(SimpleLineSymbolStyle::Dot, Qt::red, 5, this))
{
  ArcGISRuntimeEnvironment::authenticationManager()->setArcGISAuthenticationChallengeHandler(this);

  connect(m_map, &Map::doneLoading, this, [this](const Error& error)
  {
    if (!error.isEmpty() || m_map->utilityNetworks()->isEmpty())
    {
      return;
    }

    m_utilityNetwork = m_map->utilityNetworks()->first();
    m_utilityNetwork->load();
    connectSignals();
  });
}

void DisplayUtilityAssociations::handleArcGISAuthenticationChallenge(ArcGISAuthenticationChallenge* challenge)
{
  TokenCredential::createWithChallengeAsync(challenge, "viewer01", "I68VGU^nMurF", {}, this).then(this, [challenge](TokenCredential* tokenCredential)
  {
    challenge->continueWithCredential(tokenCredential);
  }).onFailed(this, [challenge](const ErrorException& e)
  {
    challenge->continueWithError(e.error());
  });
}

void DisplayUtilityAssociations::addAssociations()
{
  // check if current viewpoint is outside the max scale
  if(m_mapView->currentViewpoint(ViewpointType::CenterAndScale).targetScale() >= maxScale)
    return;

  // check if current viewpoint has a valid extent
  const Envelope extent = m_mapView->currentViewpoint(ViewpointType::BoundingGeometry).targetGeometry().extent();
  if (!extent.isValid())
  {
    qDebug("Extent not valid");
    return;
  }

  // get all the associations in the extent of the viewpoint
  m_utilityNetwork->associationsAsync(extent).then(this, [this](const QList<UtilityAssociation*>& associations)
  {
    const GraphicListModel* graphics = m_associationsOverlay->graphics();

    for (UtilityAssociation* association : associations)
    {
      // check if the graphics overlay already contains the association
      const bool uniqueGraphic = std::none_of(graphics->begin(), graphics->end(), [association](const Graphic* graphic)
                                              {
                                                const AttributeListModel* attributes = graphic->attributes();
                                                return attributes->containsAttribute("GlobalId") && qvariant_cast<QUuid>((*graphic->attributes())["GlobalId"]) == association->globalId();
                                              });

      if (uniqueGraphic)
      {
        // add a graphic for the association
        QVariantMap graphicAttributes;
        graphicAttributes["GlobalId"] = association->globalId();
        graphicAttributes["AssociationType"] = static_cast<int>(association->associationType());
        Graphic* graphic = new Graphic(association->geometry(), graphicAttributes, this);

        m_associationsOverlay->graphics()->append(graphic);
      }
    }
  });
}

DisplayUtilityAssociations::~DisplayUtilityAssociations() = default;

void DisplayUtilityAssociations::init()
{
  // Register the map view for QML
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<DisplayUtilityAssociations>("Esri.Samples", 1, 0, "DisplayUtilityAssociationsSample");
}

MapQuickView* DisplayUtilityAssociations::mapView() const
{
  return m_mapView;
}

// Set the view (created in QML)
void DisplayUtilityAssociations::setMapView(MapQuickView* mapView)
{
  if (!mapView || mapView == m_mapView)
    return;

  m_mapView = mapView;
  m_mapView->setMap(m_map);

  m_mapView->graphicsOverlays()->append(m_associationsOverlay);

  // Get the image provider from the QML Engine
  QQmlEngine* engine = QQmlEngine::contextForObject(this)->engine();
  m_symbolImageProvider = new SymbolImageProvider();
  engine->addImageProvider(SymbolImageProvider::imageProviderId(), m_symbolImageProvider);

  connect(m_mapView, &MapQuickView::navigatingChanged, this, [this]()
  {
    if (!m_mapView->isNavigating())
      addAssociations();
  });

  emit mapViewChanged();
}

void DisplayUtilityAssociations::connectSignals()
{
  connect(m_utilityNetwork, &UtilityNetwork::doneLoading, this, [this](const Error& error)
  {
    if (!error.isEmpty())
    {
      qDebug() << error.message() << error.additionalMessage();
      return;
    }

    m_mapView->setViewpointAsync(Viewpoint(Point(-9812698.37297436, 5131928.33743317, SpatialReference::webMercator()), targetScale)).then(this, [this](bool succeeded)
    {
      if (!succeeded)
        return;

      addAssociations();
    });

    // create a renderer for the associations
    UniqueValue* attachmentValue = new UniqueValue("Attachment", "",
                                                   QVariantList{static_cast<int>(UtilityAssociationType::Attachment)}, m_attachmentSymbol, this);
    UniqueValue* connectivityValue = new UniqueValue("Connectivity", "",
                                                     QVariantList{static_cast<int>(UtilityAssociationType::Connectivity)}, m_connectivitySymbol, this);
    UniqueValueRenderer* uniqueValueRenderer = new UniqueValueRenderer("", nullptr,
                                                                       QStringList{"AssociationType"}, QList<UniqueValue*>{attachmentValue, connectivityValue}, this);
    m_associationsOverlay->setRenderer(uniqueValueRenderer);

    // populate the legend
    m_attachmentSymbol->createSwatchAsync().then(this, [this](const QImage& image)
    {
      if (!m_symbolImageProvider)
        return;

      const QString imageId = QUuid().createUuid().toString(QUuid::WithoutBraces);

      // add the image to the provider
      m_symbolImageProvider->addImage(imageId, image);

      // update the URL with the unique id
      m_attachmentSymbolUrl = QString("image://%1/%2").arg(SymbolImageProvider::imageProviderId(), imageId);

      // emit the signal to trigger the QML Image to update
      emit attachmentSymbolUrlChanged();
    });

    m_connectivitySymbol->createSwatchAsync().then(this, [this](const QImage& image)
    {
      if (!m_symbolImageProvider)
        return;

      const QString imageId = QUuid().createUuid().toString(QUuid::WithoutBraces);

      // add the image to the provider
      m_symbolImageProvider->addImage(imageId, image);

      // update the URL with the unique id
      m_connectivitySymbolUrl = QString("image://%1/%2").arg(SymbolImageProvider::imageProviderId(), imageId);

      // emit the signal to trigger the QML Image to update
      emit connectivitySymbolUrlChanged();
    });
  });
}

QString DisplayUtilityAssociations::attachmentSymbolUrl() const
{
  return m_attachmentSymbolUrl;
}

QString DisplayUtilityAssociations::connectivitySymbolUrl() const
{
  return m_connectivitySymbolUrl;
}

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