Clip geometry

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Clip a geometry with another geometry.

Image of clip geometry

Use case

Create a new set of geometries for analysis (e.g. displaying buffer zones around abandoned coal mine shafts in an area of planned urban development) by clipping intersecting geometries.

How to use the sample

Click the "Clip" button to clip the blue graphic with the red dashed envelopes.

How it works

Use the static method GeometryEngine.Clip() to generate a clipped Geometry, passing in an existing Geometry and an Envelope as parameters. The existing geometry will be clipped where it intersects an envelope.
Create a new Graphic from the clipped geometry and add it to a GraphicsOverlay on the MapView.

Relevant API

Envelope
Geometry
GeometryEngine.Clip
Graphic
GraphicsOverlay

Additional information

Note: the resulting geometry may be null if the envelope does not intersect the geometry being clipped.

Sample Code

ClipGeometry.xaml

ClipGeometry.xaml.cs

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﻿<UserControl
    x:Class="ArcGISRuntime.UWP.Samples.ClipGeometry.ClipGeometry"
    x:Name="_this"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:esriUI="using:Esri.ArcGISRuntime.UI.Controls">
    <Grid>
        <esriUI:MapView x:Name="MyMapView" />
        <Border Style="{StaticResource BorderStyle}">
            <StackPanel>
                <TextBlock x:Name="ClipInstructionsLabel"
                           Text="Click 'Clip' to clip the blue graphic with red envelopes."
                           TextWrapping="Wrap" FontWeight="SemiBold"
                           Margin="0,0,0,10"/>
                <Button x:Name="ClipButton"
                    Content="Clip"
                        HorizontalAlignment="Stretch"
                    Click="ClipButton_Click"/>
            </StackPanel>
        </Border>
    </Grid>
</UserControl>