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// [WriteFile Name=OrbitCameraAroundObject, Category=Scenes]
// [Legal]
// Copyright 2019 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 "OrbitCameraAroundObject.h"
#include "ArcGISTiledElevationSource.h"
#include "Graphic.h"
#include "ModelSceneSymbol.h"
#include "OrbitGeoElementCameraController.h"
#include "Scene.h"
#include "SceneQuickView.h"
#include "SimpleRenderer.h"
#include "MapTypes.h"
#include "TaskWatcher.h"
#include "GraphicsOverlayListModel.h"
#include "GraphicListModel.h"
#include "Surface.h"
#include "ElevationSourceListModel.h"
#include "LayerSceneProperties.h"
#include "RendererSceneProperties.h"
#include "AttributeListModel.h"
#include "SceneViewTypes.h"
#include "GraphicsOverlay.h"
#include "SpatialReference.h"
#include "Point.h"
#include <QUuid>
#include <QStandardPaths>
using namespace Esri::ArcGISRuntime;
namespace
{
// helper method to get cross platform data path
QString defaultDataPath()
{
QString dataPath;
#ifdef Q_OS_IOS
dataPath = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
#else
dataPath = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
#endif
return dataPath;
}
}
OrbitCameraAroundObject::OrbitCameraAroundObject(QObject* parent /* = nullptr */):
QObject(parent),
m_scene(new Scene(BasemapStyle::ArcGISImageryStandard, 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);
}
OrbitCameraAroundObject::~OrbitCameraAroundObject() = default;
void OrbitCameraAroundObject::init()
{
// Register classes for QML
qmlRegisterType<SceneQuickView>("Esri.Samples", 1, 0, "SceneView");
qmlRegisterType<OrbitCameraAroundObject>("Esri.Samples", 1, 0, "OrbitCameraAroundObjectSample");
}
SceneQuickView* OrbitCameraAroundObject::sceneView() const
{
return m_sceneView;
}
// Set the view (created in QML)
void OrbitCameraAroundObject::setSceneView(SceneQuickView* sceneView)
{
if (!sceneView || sceneView == m_sceneView)
{
return;
}
m_sceneView = sceneView;
m_sceneView->setArcGISScene(m_scene);
/* Scene Rendering setup */
// create a new graphics overlay and add it to the sceneview
GraphicsOverlay* sceneOverlay = new GraphicsOverlay(this);
sceneOverlay->setSceneProperties(LayerSceneProperties(SurfacePlacement::Relative));
m_sceneView->graphicsOverlays()->append(sceneOverlay);
// create a renderer to control the plane's orientation by its attributes
SimpleRenderer* renderer3D = new SimpleRenderer(this);
{
//Set the renderer pitch/heading expressions, so the plane can be oriented via properties.
RendererSceneProperties properties = renderer3D->sceneProperties();
properties.setPitchExpression("[PITCH]");
properties.setHeadingExpression("[HEADING]");
renderer3D->setSceneProperties(properties);
}
sceneOverlay->setRenderer(renderer3D);
/* Plane model Setup */
//Create a plane model.
QUrl planeFileURl = QUrl(defaultDataPath() + "/ArcGIS/Runtime/Data/3D/Bristol/Collada/Bristol.dae");
ModelSceneSymbol* planeModel = new ModelSceneSymbol(planeFileURl, 1.0, this);
//Create a graphic from the plane model, positioned atop a runway.
Point runwayPos = Point{6.637, 45.399, 100, SpatialReference::wgs84()};
m_planeGraphic = new Graphic(runwayPos, planeModel, this);
//Create the plane orientation attributes that are going to be used. Orient the heading 45 degs so the plane faces down the runway.
m_planeGraphic->attributes()->insertAttribute("PITCH", 0.0);
m_planeGraphic->attributes()->insertAttribute("HEADING", 45.0);
//Add the plane graphic to the scene.
m_sceneView->graphicsOverlays()->at(0)->graphics()->append(m_planeGraphic);
/* Orbiting Camera setup */
// create the camera controller to follow the plane
m_orbitCam = new OrbitGeoElementCameraController(m_planeGraphic, 50, this);
// restrict the camera's heading to stay behind the plane
// Note : Since this is exposed and hooked up as a property, the heading slider in the UI will automatically adjust its bounds, try changing these values.
m_orbitCam->setMinCameraHeadingOffset(-45);
m_orbitCam->setMaxCameraHeadingOffset(45);
emit cameraHeadingBoundsChanged();
// restrict the camera's pitch so it doesn't go completely vertical or collide with the ground
m_orbitCam->setMinCameraPitchOffset(10);
m_orbitCam->setMaxCameraPitchOffset(100);
// restrict the camera to stay between 10 and 1000 meters from the plane
m_orbitCam->setMinCameraDistance(10);
m_orbitCam->setMaxCameraDistance(100);
// position the plane a third from the bottom of the screen
m_orbitCam->setTargetVerticalScreenFactor(0.33f);
// don't pitch the camera when the plane pitches
m_orbitCam->setAutoPitchEnabled(false);
// Forward the camera heading changed signal on to the QML property signal.
// This allows the "camera heading" slider to react to changing the camera heading via mouse motion
// See "onMoved" signal handler in OrbitCameraAroundObject.qml
connect(m_orbitCam, &OrbitGeoElementCameraController::cameraHeadingOffsetChanged, this, &OrbitCameraAroundObject::cameraHeadingChanged);
//Apply our new orbiting camera to the scene view.
m_sceneView->setCameraController(m_orbitCam);
emit sceneViewChanged();
}
void OrbitCameraAroundObject::cockpitView()
{
/*
* Animates the camera to a cockpit view. The camera's target is offset to the cockpit (instead of the plane's
* center). The camera is moved onto the target position to create a swivelling camera effect. Auto pitch is
* enabled so the camera pitches when the plane pitches.
*/
//No zooming in/out by default in cockpit view
setCamDistanceInteractionAllowed(false);
//allow the camera to get closer to the target
m_orbitCam->setMinCameraDistance(0);
// animate the camera target to the cockpit instead of the center of the plane
m_orbitCam->setTargetOffsets(0, -2, 1.1, 1);
//The animation may rotate us over the set camera bounds based on the plane pitch, so unlock them.
m_orbitCam->setMinCameraPitchOffset(-180.0);
m_orbitCam->setMaxCameraPitchOffset(180.0);
//Camera move-to-cockpit callback.
connect(m_orbitCam, &OrbitGeoElementCameraController::moveCameraCompleted, this,
[this](const QUuid&, bool succeeded)
{
if (succeeded)
{
//once the camera is in the cockpit, only allow the camera's heading to change
m_orbitCam->setMinCameraPitchOffset(90);
m_orbitCam->setMaxCameraPitchOffset(90);
// pitch the camera when the plane pitches
m_orbitCam->setAutoPitchEnabled(true);
}
});
//Start the camera move into the cockpit
//If the camera is already tracking object pitch, don't want to animate the pitch any further, we're exactly where we should be.
m_orbitCam->moveCamera(0 - m_orbitCam->cameraDistance(),
0 - m_orbitCam->cameraHeadingOffset(),
m_orbitCam->isAutoPitchEnabled() ? 0.0 : (90 - m_orbitCam->cameraPitchOffset()) + planePitch(), 1.0);
}
void OrbitCameraAroundObject::centerView()
{
/*
* Configures the camera controller for a "follow" view. The camera targets the center of the plane with a default
* position directly behind and slightly above the plane. Auto pitch is disabled so the camera does not pitch when
* the plane pitches.
*/
setCamDistanceInteractionAllowed(true);
m_orbitCam->setAutoPitchEnabled(false);
m_orbitCam->setTargetOffsetX(0);
m_orbitCam->setTargetOffsetY(0);
m_orbitCam->setTargetOffsetZ(0);
m_orbitCam->setCameraHeadingOffset(0);
m_orbitCam->setMinCameraPitchOffset(10);
m_orbitCam->setMaxCameraPitchOffset(100);
m_orbitCam->setCameraPitchOffset(45);
m_orbitCam->setMinCameraDistance(10.0);
m_orbitCam->setCameraDistance(50.0);
}
// QML Property methods, (see the Q_PROPERTY declarations in header file,) for allowing the model to interact with the UI
// We need to do nullptr checks here as it's entirely possible, and even expected, that these getter properties will be called by the UI
// before setSceneView has been called. Objects like the camera are not initialised until then, so return sensible defaults if the object is null.
bool OrbitCameraAroundObject::camDistanceInteractionAllowed() const
{
return m_orbitCam != nullptr ? m_orbitCam->isCameraDistanceInteractive() : true;
}
void OrbitCameraAroundObject::setCamDistanceInteractionAllowed(bool allowed)
{
//Check the allowed flags arn't the same on set to avoid a binding loop
if ((m_orbitCam != nullptr) && (allowed != m_orbitCam->isCameraDistanceInteractive()))
{
m_orbitCam->setCameraDistanceInteractive(allowed);
emit camDistanceInteractionAllowedChanged();
}
}
double OrbitCameraAroundObject::cameraHeading() const
{
return m_orbitCam != nullptr ? m_orbitCam->cameraHeadingOffset() : 0.0;
}
void OrbitCameraAroundObject::setCameraHeading(double heading)
{
if (m_orbitCam != nullptr)
{
m_orbitCam->setCameraHeadingOffset(heading);
emit cameraHeadingChanged();
}
}
float OrbitCameraAroundObject::planePitch() const
{
if(!m_planeGraphic->attributes()->containsAttribute("PITCH"))
{
return 0.0;
}
return m_planeGraphic->attributes()->attributeValue("PITCH").toFloat();
}
void OrbitCameraAroundObject::setPlanePitch(float pitch)
{
if (!m_planeGraphic->attributes()->containsAttribute("PITCH"))
{
m_planeGraphic->attributes()->insertAttribute("PITCH", pitch);
}
else
{
m_planeGraphic->attributes()->replaceAttribute("PITCH", pitch);
}
emit planePitchChanged();
}
QPointF OrbitCameraAroundObject::cameraHeadingBounds() const
{
return m_orbitCam != nullptr ? QPointF{m_orbitCam->minCameraHeadingOffset(), m_orbitCam->maxCameraHeadingOffset()}
: QPointF{-45.0, 45.0};
}