Distance measurement analysis

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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
// [WriteFile Name=DistanceMeasurementAnalysis, Category=Analysis]
// [Legal]
// Copyright 2022 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

#include "DistanceMeasurementAnalysis.h"

#include "AnalysisListModel.h"
#include "AnalysisOverlay.h"
#include "AnalysisOverlayListModel.h"
#include "ArcGISSceneLayer.h"
#include "ArcGISTiledElevationSource.h"
#include "Camera.h"
#include "CoreTypes.h"
#include "Distance.h"
#include "ElevationSourceListModel.h"
#include "LayerListModel.h"
#include "LinearUnit.h"
#include "LocationDistanceMeasurement.h"
#include "MapTypes.h"
#include "Point.h"
#include "Scene.h"
#include "SceneQuickView.h"
#include "SpatialReference.h"
#include "Surface.h"
#include "Viewpoint.h"

#include <QFuture>
#include <QUuid>

using namespace Esri::ArcGISRuntime;

DistanceMeasurementAnalysis::DistanceMeasurementAnalysis(QObject* parent /* = nullptr */):
  QObject(parent),
  m_scene(new Scene(BasemapStyle::ArcGISTopographic, 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);

  // Add a Scene Layer
  ArcGISSceneLayer* sceneLayer = new ArcGISSceneLayer(QUrl("https://tiles.arcgis.com/tiles/P3ePLMYs2RVChkJx/arcgis/rest/services/Buildings_Brest/SceneServer/layers/0"), this);
  sceneLayer->setAltitudeOffset(1); // The elevation source is a very fine resolution so we raise the scene layer slightly so it does not clip the surface

  m_scene->operationalLayers()->append(sceneLayer);
}

DistanceMeasurementAnalysis::~DistanceMeasurementAnalysis() = default;

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

SceneQuickView* DistanceMeasurementAnalysis::sceneView() const
{
  return m_sceneView;
}

// Set the view (created in QML)
void DistanceMeasurementAnalysis::setSceneView(SceneQuickView* sceneView)
{
  if (!sceneView || sceneView == m_sceneView)
    return;

  m_sceneView = sceneView;
  m_sceneView->setArcGISScene(m_scene);
  emit sceneViewChanged();

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

  // Create and add the LocationDistanceMeasurement
  const Point startLocation(-4.494677, 48.384472, 24.772694, SpatialReference::wgs84());
  const Point endLocation(-4.495646, 48.384377, 58.501115, SpatialReference::wgs84());
  m_distanceAnalysis = new LocationDistanceMeasurement(startLocation, endLocation, this);
  m_distanceAnalysis->setUnitSystem(UnitSystem::Metric);
  analysisOverlay->analyses()->append(m_distanceAnalysis);

  // Set initial viewpoint
  constexpr double distance = 400.0;
  constexpr double pitch = 45.0;
  constexpr double heading = 0.0;
  constexpr double roll = 0.0;
  const Camera initCamera(startLocation, distance, heading, pitch, roll);
  const Viewpoint initViewpoint(startLocation, distance, initCamera);
  m_scene->setInitialViewpoint(initViewpoint);

  connectSignals();
}

void DistanceMeasurementAnalysis::connectSignals()
{
  // connect to signal to obtain updated distances
  connect(m_distanceAnalysis, &LocationDistanceMeasurement::measurementChanged, this, [this](const Distance& directDistance,
                                                                                             const Distance& horizontalDistance,
                                                                                             const Distance& verticalDistance)
  {
    m_directDistance = QString::number(directDistance.value(), 'f', 2) + QString(" %1").arg(directDistance.unit().abbreviation());
    m_horizontalDistance = QString::number(horizontalDistance.value(), 'f', 2) + QString(" %1").arg(horizontalDistance.unit().abbreviation());
    m_verticalDistance = QString::number(verticalDistance.value(), 'f', 2) + QString(" %1").arg(verticalDistance.unit().abbreviation());
    emit directDistanceChanged();
    emit horizontalDistanceChanged();
    emit verticalDistanceChanged();
  });

  // connect to mouse signals to update the analysis

  // When the mouse is pressed and held, start updating the distance analysis end point
  connect(m_sceneView, &SceneQuickView::mousePressedAndHeld, this, [this](QMouseEvent& mouseEvent)
  {
    m_isPressAndHold = true;
    m_sceneView->screenToLocationAsync(mouseEvent.position().x(), mouseEvent.position().y()).then(this, [this](const Point& pt)
    {
      onScreenToLocationCompleted_(pt);
    });
  });

  // When the mouse is released...
  connect(m_sceneView, &SceneQuickView::mouseReleased, this, [this](QMouseEvent& mouseEvent)
  {
    // Check if the mouse was released from a pan gesture
    if (m_isNavigating)
    {
      m_isNavigating = false;
      return;
    }

    // Ignore if Right click
    if (mouseEvent.button() == Qt::RightButton)
      return;

    // If pressing and holding, do nothing
    if (m_isPressAndHold)
      m_isPressAndHold = false;
    // Else get the location from the screen coordinates
    else
      m_sceneView->screenToLocationAsync(mouseEvent.position().x(), mouseEvent.position().y()).then(this, [this](const Point& pt)
      {
        onScreenToLocationCompleted_(pt);
      });
  });

  // Update the distance analysis when the mouse moves if it is a press and hold movement
  connect(m_sceneView, &SceneQuickView::mouseMoved, this, [this](QMouseEvent& mouseEvent)
  {
    if (m_isPressAndHold)
      m_sceneView->screenToLocationAsync(mouseEvent.position().x(), mouseEvent.position().y()).then(this, [this](const Point& pt)
      {
        onScreenToLocationCompleted_(pt);
      });
  });

  // Set a flag when mousePressed signal emits
  connect(m_sceneView, &SceneQuickView::mousePressed, this, [this]
  {
    m_isNavigating = false;
  });


  // Set a flag when viewpointChanged signal emits
  connect(m_sceneView, &SceneQuickView::viewpointChanged, this, [this]
  {
    m_isNavigating = true;
  });
}

void DistanceMeasurementAnalysis::onScreenToLocationCompleted_(const Point& pt)
{
  // If it was from a press and hold, update the end location
  if (m_isPressAndHold)
    m_distanceAnalysis->setEndLocation(pt);
  // Else if it was a normal mouse click (press and release), update the start location
  else
    m_distanceAnalysis->setStartLocation(pt);
}

void DistanceMeasurementAnalysis::setUnits(const QString& unitName)
{
  if (!m_distanceAnalysis)
    return;

  if (unitName == "Metric")
    m_distanceAnalysis->setUnitSystem(UnitSystem::Metric);
  else
    m_distanceAnalysis->setUnitSystem(UnitSystem::Imperial);
}

QString DistanceMeasurementAnalysis::directDistance() const
{
  return m_directDistance;
}

QString DistanceMeasurementAnalysis::horizontalDistance() const
{
  return m_horizontalDistance;
}

QString DistanceMeasurementAnalysis::verticalDistance() const
{
  return m_verticalDistance;
}