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// [WriteFile Name=LineOfSightLocation, 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
#include "LineOfSightLocation.h"
#include "ArcGISTiledElevationSource.h"
#include "Scene.h"
#include "SceneQuickView.h"
#include "LocationLineOfSight.h"
#include "AnalysisOverlay.h"
#include "Camera.h"
using namespace Esri::ArcGISRuntime;
LineOfSightLocation::LineOfSightLocation(QQuickItem* parent /* = nullptr */):
QQuickItem(parent)
{
}
void LineOfSightLocation::init()
{
// Register classes for QML
qmlRegisterType<SceneQuickView>("Esri.Samples", 1, 0, "SceneView");
qmlRegisterType<LineOfSightLocation>("Esri.Samples", 1, 0, "LineOfSightLocationSample");
}
void LineOfSightLocation::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 LineOfSightLocation::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 LocationLineOfSight(observerPt, targetPt, this);
m_analysisOverlay->analyses()->append(m_lineOfSight);
// configure the LoS color and width
LineOfSight::setVisibleColor(QColor("cyan"));
LineOfSight::setObstructedColor(QColor("magenta"));
LineOfSight::setLineWidth(2.0f);
}
void LineOfSightLocation::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->setViewpointCamera(camera);
}
void LineOfSightLocation::connectSignals()
{
// on mouse click perform the location viewshed
connect(m_sceneView, &SceneQuickView::mouseClicked, this, [this](QMouseEvent& event)
{
const Point pt = m_sceneView->screenToBaseSurface(event.x(), event.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.x(), event.y());
m_lineOfSight->setTargetLocation(pt);
}
});
connect(m_sceneView, &SceneQuickView::mouseReleased, this, [this]
{
m_calculating = false;
});
}