Create terrain surface from a local tile package

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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

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

Relevant API

  • ArcGISTiledElevationSource
  • Surface

Offline data

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. Details on creating these are in the ArcGIS Pro documentation

Link Local Location
MontereyElevation Tile Package <userhome>/ArcGIS/Runtime/Data/tpk/MontereyElevation.tpk

Additional information

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

Tags

3D, elevation, LERC, surface, terrain, tile cache

Sample Code

CreateTerrainSurfaceFromLocalTilePackage.qml
                                                                            
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// [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 100.11
import Esri.ArcGISExtras 1.1

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

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

    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)
                }
            }
        }

        // Once the scene view has loaded, apply the camera.
        Component.onCompleted: {
            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
    }
}

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