Create terrain surface from a local tile package

View in

C++

QML

View on GitHub

Sample viewer app

Set the terrain surface with elevation described by a local tile package.

screenshot

Use case

In a scene view, the terrain surface is what the basemap, operational layers, and graphics are draped onto. For example, when viewing a scene in a mountainous region, applying a terrain surface to the scene will help in recognizing the slopes, valleys, and elevated areas.

How to use the sample

When loaded, the sample will show a scene with a terrain surface applied. Pan and zoom to explore the scene and observe how the terrain surface allows visualizing elevation differences.

How it works

Create a Scene and add it to a SceneView.
Create an ArcGISTiledElevationSource from a local tile package (.tpkx) by setting the url to the local file.
Add the tiled elevation source to the scene's base surface.

Relevant API

ArcGISTiledElevationSource
Surface

Offline data

This sample uses the Monterey Elevation tile package, using CompactV2 storage format (.tpkx).

Read more about how to set up the sample's offline data here.

The tile package must be a LERC (limited error raster compression) encoded TPK/TPKX. Details on can be found in the topic Share a tile package in the ArcGIS Pro documentation.

Additional information

See the ArcGIS Pro Tile Package documentation (since Esri.ArcGISRuntime 100.1) for information on tile packages

Sample Code

CreateTerrainSurfaceFromLocalTilePackage.qml
Use dark colors for code blocksCopy
// [WriteFile Name=CreateTerrainSurfaceFromLocalTilePackage, 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 2.6
import Esri.ArcGISRuntime 100.15
import Esri.ArcGISExtras 1.1

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

    readonly property string montereyTpkElevationPath: System.userHomePath + "/ArcGIS/Runtime/Data/tpkx/MontereyElevation.tpkx"

    SceneView {
        id: sceneView
        anchors.fill: parent

        Scene {
            id: scene
            Basemap {
                initStyle: Enums.BasemapStyleArcGISImageryStandard
            }

            Surface {
                ArcGISTiledElevationSource {
                    url: montereyTpkElevationPath
                    //Hook up success/error reporting for the Elevation Source load
                    onLoadStatusChanged: reportLoadStatus(loadStatus, loadError)
                }
            }
        }

        Component.onCompleted: {
            // Set the focus on SceneView to initially enable keyboard navigation
            forceActiveFocus();

            // Once the scene view has loaded, apply the camera.
            setViewpointCameraAndWait(camera);
        }
    }

    function reportLoadStatus(loadStatus, loadError) {
        if (loadStatus === Enums.LoadStatusLoaded) {
            console.info("Loaded tiled elevation source succesfully")
        }
        else if (loadStatus === Enums.LoadStatusFailedToLoad) {
            console.warn("Error loading elevation source : ", loadError.message, loadError.additionalMessage)
        }
    }

    // Create the camera to be used as the scene view's viewpoint, looking at Monterey, California..
    Camera {
        id: camera
        location: Point {
            x: -121.80 // Longitude
            y: 36.51 // Latitude
            z: 300.0 // Altiude
            spatialReference: SpatialReference { wkid: 4326 }
        }
        heading: 10.0
        pitch: 70.0
        roll: 0.0
    }
}