The globe camera controller (the default camera controller in all new scenes) allows a user to explore the scene freely by zooming in/out and panning around the globe. The orbit camera controllers fix the camera to look at a target location or geoelement. A primary use case is for following moving objects like cars and planes.
How to use the sample
The application loads with the default globe camera controller. To rotate and fix the scene around the plane, exit globe mode by choosing the "Orbit camera around plane" option (i.e. camera will now be fixed to the plane). Choose the "Orbit camera around crater" option to rotate and center the scene around the location of the Upheaval Dome crater structure, or choose the "Free pan round the globe" option to return to default free navigation.
How it works
Create an instance of a class extending CameraController: GlobeCameraController, OrbitLocationCameraController, OrbitGeoElementCameraController.
Set the scene view's camera controller with sceneView.cameraController.
Relevant API
Scene
Camera
GlobeCameraController
OrbitGeoElementCameraController
OrbitLocationCameraController
SceneView
Tags
camera controller, Camera, SceneView, 3D
Sample Code
ChooseCameraController.qml
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// [WriteFile Name=ChooseCameraController, 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]import QtQuick
import Esri.ArcGISRuntime
import Esri.ArcGISExtras
import QtQuick.Controls
import QtQuick.Layouts
Rectangle {
clip: truewidth: 800height: 600 readonly property url dataPath: {
Qt.platform.os === "ios" ?
System.writableLocationUrl(System.StandardPathsDocumentsLocation) + "/ArcGIS/Runtime/Data/3D" :
System.writableLocationUrl(System.StandardPathsHomeLocation) + "/ArcGIS/Runtime/Data/3D" }
readonly property real longitude: -109.929589 readonly property real latitude: 38.43500 readonly property real distance: 5000GlobeCameraController {
id: globeController }
Point {
id: theCraterx: longitude
y: latitude
z: distance
spatialReference: SpatialReference { wkid: 4326 }
}
OrbitLocationCameraController {
id: orbitLocationCtrlrtargetLocation: theCrater
cameraDistance: distance
}
OrbitGeoElementCameraController{
id: orbitPlaneCtrlrtargetGeoElement: thePlane
cameraDistance: distance / 2 }
SceneView {
id: sceneViewanchors.fill: parentScene {
id: sceneBasemap {
initStyle: Enums.BasemapStyleArcGISImageryStandard
}
Surface {
ArcGISTiledElevationSource {
url: "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer" }
}
}
GraphicsOverlay {
id: graphicsOverlayLayerSceneProperties {
surfacePlacement: Enums.SurfacePlacementRelative
}
ModelSceneSymbol {
id: mmsurl: dataPath + "/Bristol/Collada/Bristol.dae"scale: 10.0heading: 0.0 }
Graphic {
id: thePlanesymbol: mms
geometry: Point {
x: longitude
y: latitude
z: distance / 2spatialReference: sceneView.spatialReference
}
}
}
Component.onCompleted: {
// Set the focus on SceneView to initially enable keyboard navigation forceActiveFocus();
// set viewpoint to the specified camera sceneView.setViewpointCamera(camera);
}
}
Camera {
id: cameraheading: 0.0pitch: 0.0roll: 0.0location: theCrater
}
// Create a rectangle to display the GUIRectangle {
width: childrenRect.width
height: childrenRect.height
color: "lightgrey"opacity: 0.8radius: 5anchors {
margins: 10left: parent.left
top: parent.top
}
border {
color: "#4D4D4D"width: 1 }
ColumnLayout {
Text {
Layout.margins: 5Layout.fillWidth: truetext: "Choose camera controller"clip: truefont {
pointSize: 14bold: true }
}
RadioButton {
id: orbitAroundAeroplaneLayout.fillWidth: truetext: "Orbit camera around plane"onCheckedChanged: {
if (checked) {
sceneView.cameraController = orbitPlaneCtrlr;
}
}
}
RadioButton {
id: orbitLocationLayout.fillWidth: truetext: "Orbit camera around crater"onCheckedChanged: {
if (checked) {
sceneView.cameraController = orbitLocationCtrlr;
}
}
}
RadioButton {
id: orbitAroundGlobeLayout.fillWidth: truechecked: truetext: "Free pan round the globe"onCheckedChanged: {
if (checked) {
sceneView.cameraController = globeController;
}
}
}
}
}
}