Realistic lighting and shadows

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
// [WriteFile Name=RealisticLightingAndShadows, Category=Scenes]
// [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 "RealisticLightingAndShadows.h"

// ArcGIS Maps SDK headers
#include "ArcGISSceneLayer.h"
#include "ArcGISTiledElevationSource.h"
#include "Camera.h"
#include "ElevationSourceListModel.h"
#include "LayerListModel.h"
#include "MapTypes.h"
#include "Scene.h"
#include "SceneQuickView.h"
#include "SceneViewTypes.h"
#include "Surface.h"

// Qt headers
#include <QDate>
#include <QDateTime>
#include <QFuture>
#include <QTime>
#include <QTimeZone>
#include <QUrl>

// STL headers
#include <cmath>

using namespace Esri::ArcGISRuntime;

RealisticLightingAndShadows::RealisticLightingAndShadows(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 3D building shells with a scene layer
  ArcGISSceneLayer* scenelayer = new ArcGISSceneLayer(
        QUrl("https://tiles.arcgis.com/tiles/P3ePLMYs2RVChkJx/arcgis/rest/services/DevA_BuildingShells/SceneServer/layers/0"), this);

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

RealisticLightingAndShadows::~RealisticLightingAndShadows() = default;

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

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

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

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

  // add camera and set scene viewpoint
  const Camera camera(45.54605153789073, -122.69033380511073, 941.0002111233771, 162.58544227544266, 60.0,0.0);
  m_sceneView->setViewpointCameraAsync(camera, 0);

  // set atmosphere effect to realistic
  m_sceneView->setAtmosphereEffect(AtmosphereEffect::Realistic);

  // set the sun time to the calendar
  setSunTimeFromValue(8.5);

  // add sun lighting
  m_sceneView->setSunLighting(LightingMode::LightAndShadows);

  emit sceneViewChanged();
}

void RealisticLightingAndShadows::setSunTimeFromValue(double sunTimeValue)
{
  if (!m_sceneView)
    return;

  // convert a double from 0.0 to 23.99 into hours and minutes
  double remainder = std::fmod(sunTimeValue, 1);
  int minute = remainder * 60;
  int hour = sunTimeValue - remainder;

  const QTime selectedTime = QTime(hour, minute);

  // set a calendar with a date, time, and timezone
  const QDateTime sunTime(QDate(2018, 8, 10), selectedTime, QTimeZone(-25200));
  // To represent the PST time zone during daylight savings time (-7 hours), we use the number of seconds of offset.
  // 3600 seconds/hour * -7 hours = -25,200 seconds.

  // set the sun time to the calendar
  m_sceneView->setSunTime(sunTime);

  // trigger the time in the settings column to update
  emit sunTimeChanged(selectedTime.toString("h:mm ap"));
}

void RealisticLightingAndShadows::setLightingMode(int lightingModeValue)
{
  if (!m_sceneView)
    return;

  if (lightingModeValue == 0)
  {
    m_sceneView->setSunLighting(LightingMode::NoLight);
  }
  else if (lightingModeValue == 1)
  {
    m_sceneView->setSunLighting(LightingMode::Light);
  }
  else
  {
    m_sceneView->setSunLighting(LightingMode::LightAndShadows);
  }
}