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ArcGIS Runtime SDK for Qt

View point cloud data offline

Sample Viewer View Sample on GitHub

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

  1. Create a PointCloudLayer with the path to a local .slpk file containing a point cloud layer.
  2. 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

import QtQuick 2.6
import Esri.ArcGISRuntime 100.9
import Esri.ArcGISExtras 1.1

Rectangle {
    id: rootRectangle
    clip: true
    width: 800
    height: 600

    readonly property url dataPath: System.userHomePath + "/ArcGIS/Runtime/Data/slpk/"

    SceneView {
        id: sceneView
        anchors.fill: parent

        Scene {
            id: scene
            BasemapImagery {}

            Surface {
                ArcGISTiledElevationSource {
                    url: "http://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);
                }
            }
        }
    }
}