Show exploratory line of sight (Points)

// [WriteFile Name=ShowExploratoryLineOfSightBetweenPoints, Category=Analysis]
// [Legal]
// Copyright 2017 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 "ShowExploratoryLineOfSightBetweenPoints.h"

// ArcGIS Maps SDK headers
#include "AnalysisListModel.h"
#include "AnalysisOverlay.h"
#include "AnalysisOverlayListModel.h"
#include "ArcGISTiledElevationSource.h"
#include "Camera.h"
#include "ElevationSourceListModel.h"
#include "ExploratoryLocationLineOfSight.h"
#include "MapTypes.h"
#include "Point.h"
#include "Scene.h"
#include "SceneQuickView.h"
#include "SpatialReference.h"
#include "Surface.h"

// Qt headers
#include <QFuture>

using namespace Esri::ArcGISRuntime;

ShowExploratoryLineOfSightBetweenPoints::ShowExploratoryLineOfSightBetweenPoints(QQuickItem* parent /* = nullptr */) :
  QQuickItem(parent)
{
}

void ShowExploratoryLineOfSightBetweenPoints::init()
{
  // Register classes for QML
  qmlRegisterType<SceneQuickView>("Esri.Samples", 1, 0, "SceneView");
  qmlRegisterType<ShowExploratoryLineOfSightBetweenPoints>("Esri.Samples", 1, 0, "ShowExploratoryLineOfSightBetweenPointsSample");
}

void ShowExploratoryLineOfSightBetweenPoints::componentComplete()
{
  QQuickItem::componentComplete();

  // Create a scene and give it to the SceneView
  m_sceneView = findChild<SceneQuickView*>("sceneView");

  Scene* scene = new Scene(BasemapStyle::ArcGISTopographic, this);
  Surface* surface = new Surface(this);
  surface->elevationSources()->append(
    new ArcGISTiledElevationSource(QUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"), this));
  scene->setBaseSurface(surface);
  m_sceneView->setArcGISScene(scene);

  // Add an Analysis Overlay
  m_analysisOverlay = new AnalysisOverlay(this);
  m_sceneView->analysisOverlays()->append(m_analysisOverlay);

  // set initial viewpoint
  setInitialViewpoint();

  // create LocationLineOfSight
  createLineOfSight();

  // connect signals
  connectSignals();
}

void ShowExploratoryLineOfSightBetweenPoints::createLineOfSight()
{
  // create the observer/target points
  const Point observerPt(-73.06958032962375, -49.253112971555446, 2000, SpatialReference::wgs84());
  const Point targetPt(-73.079266999709162, -49.300457676730559, 1312, SpatialReference::wgs84());

  // create the line of sight
  m_lineOfSight = new ExploratoryLocationLineOfSight(observerPt, targetPt, this);
  m_analysisOverlay->analyses()->append(m_lineOfSight);

  // configure the LoS color and width
  ExploratoryLineOfSight::setVisibleColor(QColor("cyan"));
  ExploratoryLineOfSight::setObstructedColor(QColor("magenta"));
  ExploratoryLineOfSight::setLineWidth(2.0f);
}

void ShowExploratoryLineOfSightBetweenPoints::setInitialViewpoint()
{
  // Set a viewpoint
  Point point(-73.0815, -49.3272, 4059, SpatialReference::wgs84());
  const double heading = 11;
  const double pitch = 62;
  const double roll = 0;
  Camera camera(point, heading, pitch, roll);
  m_sceneView->setViewpointCameraAsync(camera);
}

void ShowExploratoryLineOfSightBetweenPoints::connectSignals()
{
  // on mouse click perform the location viewshed
  connect(m_sceneView, &SceneQuickView::mouseClicked, this, [this](QMouseEvent& event)
  {
    const Point pt = m_sceneView->screenToBaseSurface(event.position().x(), event.position().y());
    m_lineOfSight->setTargetLocation(pt);
  });

  connect(m_sceneView, &SceneQuickView::mousePressedAndHeld, this, [this]
  {
    m_calculating = true;
  });

  connect(m_sceneView, &SceneQuickView::mouseMoved, this, [this](QMouseEvent& event)
  {
    if (m_calculating)
    {
      const Point pt = m_sceneView->screenToBaseSurface(event.position().x(), event.position().y());
      m_lineOfSight->setTargetLocation(pt);
    }
  });

  connect(m_sceneView, &SceneQuickView::mouseReleased, this, [this]
  {
    m_calculating = false;
  });
}

// [WriteFile Name=ShowExploratoryLineOfSightBetweenPoints, Category=Analysis]
// [Legal]
// Copyright 2017 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]

#ifndef ShowExploratoryLineOfSightBetweenPoints_H
#define ShowExploratoryLineOfSightBetweenPoints_H

// Qt headers
#include <QQuickItem>

namespace Esri::ArcGISRuntime
{
  class SceneQuickView;
  class AnalysisOverlay;
  class ExploratoryLocationLineOfSight;
} // namespace Esri::ArcGISRuntime

class ShowExploratoryLineOfSightBetweenPoints : public QQuickItem
{
  Q_OBJECT

public:
  explicit ShowExploratoryLineOfSightBetweenPoints(QQuickItem* parent = nullptr);
  ~ShowExploratoryLineOfSightBetweenPoints() override = default;

  void componentComplete() override;
  static void init();

private:
  Esri::ArcGISRuntime::SceneQuickView* m_sceneView = nullptr;
  Esri::ArcGISRuntime::AnalysisOverlay* m_analysisOverlay = nullptr;
  Esri::ArcGISRuntime::ExploratoryLocationLineOfSight* m_lineOfSight = nullptr;

  bool m_calculating = false;

  void setInitialViewpoint();
  void connectSignals();
  void createLineOfSight();
};

#endif // ShowExploratoryLineOfSightBetweenPoints_H

// [WriteFile Name=ShowExploratoryLineOfSightBetweenPoints, Category=Analysis]
// [Legal]
// Copyright 2017 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 Esri.Samples

ShowExploratoryLineOfSightBetweenPointsSample {
    id: rootRectangle
    clip: true
    width: 800
    height: 600

    SceneView {
        objectName: "sceneView"
        anchors.fill: parent

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

// [WriteFile Name=ShowExploratoryLineOfSightBetweenPoints, Category=Analysis]
// [Legal]
// Copyright 2017 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]

// sample headers
#include "ShowExploratoryLineOfSightBetweenPoints.h"

// ArcGIS Maps SDK headers
#include "ArcGISRuntimeEnvironment.h"

// Qt headers
#include <QCommandLineParser>
#include <QDir>
#include <QGuiApplication>
#include <QQmlEngine>
#include <QQuickView>
#include <QSurfaceFormat>

// Platform specific headers
#ifdef Q_OS_WIN
#include <Windows.h>
#endif

#define STRINGIZE(x) #x
#define QUOTE(x) STRINGIZE(x)

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

  QGuiApplication app(argc, argv);
  app.setApplicationName(QString("ShowExploratoryLineOfSightBetweenPoints"));

  // Use of ArcGIS location services, such as basemap styles, geocoding, and routing services,
  // requires an access token. For more information see
  // https://links.esri.com/arcgis-runtime-security-auth.

  // The following methods grant an access token:

  // 1. User authentication: Grants a temporary access token associated with a user's ArcGIS account.
  // To generate a token, a user logs in to the app with an ArcGIS account that is part of an
  // organization in ArcGIS Online or ArcGIS Enterprise.

  // 2. API key authentication: Get a long-lived access token that gives your application access to
  // ArcGIS location services. Go to the tutorial at https://links.esri.com/create-an-api-key.
  // Copy the API Key access token.

  const QString accessToken = QString("");

  if (accessToken.isEmpty())
  {
    qWarning() << "Use of ArcGIS location services, such as the basemap styles service, requires"
               << "you to authenticate with an ArcGIS account or set the API Key property.";
  }
  else
  {
    Esri::ArcGISRuntime::ArcGISRuntimeEnvironment::setApiKey(accessToken);
  }

  // Initialize the sample
  ShowExploratoryLineOfSightBetweenPoints::init();

  // Initialize application view
  QQuickView view;
  view.setResizeMode(QQuickView::SizeRootObjectToView);

  QString arcGISRuntimeImportPath = QUOTE(ARCGIS_RUNTIME_IMPORT_PATH);

#if defined(LINUX_PLATFORM_REPLACEMENT)
  // on some linux platforms the string 'linux' is replaced with 1
  // fix the replacement paths which were created
  QString replaceString = QUOTE(LINUX_PLATFORM_REPLACEMENT);
  arcGISRuntimeImportPath = arcGISRuntimeImportPath.replace(replaceString, "linux", Qt::CaseSensitive);
#endif

  // Add the import Path
  view.engine()->addImportPath(QDir(QCoreApplication::applicationDirPath()).filePath("qml"));
  // Add the Runtime and Extras path
  view.engine()->addImportPath(arcGISRuntimeImportPath);

  // Set the source
  view.setSource(QUrl("qrc:/Samples/Analysis/ShowExploratoryLineOfSightBetweenPoints/ShowExploratoryLineOfSightBetweenPoints.qml"));

  view.show();

  return app.exec();
}