View point cloud data offline

View in

C++

QML

View on GitHub

Sample viewer app

Display local 3D point cloud data.

screenshot

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 PointCloudLayer with the path to a local .slpk file 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

Sample Code

ViewPointCloudDataOffline.qml
Use dark colors for code blocksCopy
// [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 2.6
import Esri.ArcGISRuntime 100.15
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

        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);
                }
            }
        }
    }
}