Display local 3D point cloud data.
Use case
Point clouds are often used to visualize massive sets of sensor data such as lidar. The point locations indicate where the sensor data was measured spatially, and the color or size of the points indicate the measured/derived value of the sensor reading. In the case of lidar, the color of the visualized point could be the color of the reflected light, so that the point cloud forms a true color 3D image of the area.
Point clouds can be loaded offline from scene layer packages (.slpk).
How to use the sample
The sample starts with a point cloud layer loaded and draped on top of a scene. Pan and zoom to explore the scene and see the detail of the point cloud layer.
How it works
- Create a
PointCloudLayerwith the path to a local.slpkfile containing a point cloud layer. - Add the layer to a scene's operational layers collection.
Relevant API
- PointCloudLayer
About the data
This point cloud data comes from Balboa Park in San Diego, California. Created and provided by USGS.
Offline data
Read more about how to set up the sample's offline data here.
| Link | Local Location |
|---|---|
| San Diego Point Cloud SLPK | <userhome>/ArcGIS/Runtime/Data/slpk/sandiego-north-balboa-pointcloud.slpk |
Tags
3D, point cloud, lidar
Sample Code
// [WriteFile Name=ViewPointCloudDataOffline, Category=Scenes]
// [Legal]
// Copyright 2018 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
Rectangle {
id: rootRectangle
clip: true
width: 800
height: 600
readonly property url dataPath: {
Qt.platform.os === "ios" ?
System.writableLocationUrl(System.StandardPathsDocumentsLocation) + "/ArcGIS/Runtime/Data/slpk/" :
System.writableLocationUrl(System.StandardPathsHomeLocation) + "/ArcGIS/Runtime/Data/slpk/"
}
SceneView {
id: sceneView
anchors.fill: parent
Component.onCompleted: {
// Set the focus on SceneView to initially enable keyboard navigation
forceActiveFocus();
}
Scene {
id: scene
Basemap {
initStyle: Enums.BasemapStyleArcGISImageryStandard
}
Surface {
ArcGISTiledElevationSource {
url: "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"
}
}
// Add a point cloud layer to the scene
PointCloudLayer {
// set the URL to a local scene layer package
url: dataPath + "sandiego-north-balboa-pointcloud.slpk"
// zoom to the layer once loaded
onLoadStatusChanged: {
if (loadStatus !== Enums.LoadStatusLoaded)
return;
const vp = ArcGISRuntimeEnvironment.createObject("ViewpointExtent", {extent: fullExtent});
sceneView.setViewpoint(vp);
}
}
}
}
}