diff --git a/src/Android/Xamarin.Android/ArcGISRuntime.Xamarin.Samples.Android.csproj b/src/Android/Xamarin.Android/ArcGISRuntime.Xamarin.Samples.Android.csproj
index 6cf2441bed..ff947a7be0 100644
--- a/src/Android/Xamarin.Android/ArcGISRuntime.Xamarin.Samples.Android.csproj
+++ b/src/Android/Xamarin.Android/ArcGISRuntime.Xamarin.Samples.Android.csproj
@@ -218,6 +218,7 @@
+
@@ -393,6 +394,7 @@
+
diff --git a/src/Android/Xamarin.Android/Samples/GeometryEngine/ConvexHullList/ConvexHullList.cs b/src/Android/Xamarin.Android/Samples/GeometryEngine/ConvexHullList/ConvexHullList.cs
new file mode 100644
index 0000000000..6630c3435c
--- /dev/null
+++ b/src/Android/Xamarin.Android/Samples/GeometryEngine/ConvexHullList/ConvexHullList.cs
@@ -0,0 +1,249 @@
+// 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.
+
+using Android.App;
+using Android.OS;
+using Android.Widget;
+using Esri.ArcGISRuntime.Geometry;
+using Esri.ArcGISRuntime.Mapping;
+using Esri.ArcGISRuntime.Symbology;
+using Esri.ArcGISRuntime.UI;
+using Esri.ArcGISRuntime.UI.Controls;
+using System;
+using System.Collections.Generic;
+
+namespace ArcGISRuntime.Samples.ConvexHullList
+{
+ [Activity]
+ [ArcGISRuntime.Samples.Shared.Attributes.Sample(
+ "Convex hull list",
+ "GeometryEngine",
+ "This sample demonstrates how to use the GeometryEngine.ConvexHull to generate convex hull polygon(s) from multiple input geometries.",
+ "Click the 'ConvexHull' button to create convex hull(s) from the polygon graphics. If the 'Union' checkbox is checked, the resulting output will be one polygon being the convex hull for the two input polygons. If the 'Union' checkbox is un-checked, the resulting output will have two convex hull polygons - one for each of the two input polygons.",
+ "Analysis", "ConvexHull", "GeometryEngine")]
+ public class ConvexHullList : Activity
+ {
+ // Create and hold reference to the used MapView.
+ private MapView _myMapView = new MapView();
+
+ // Graphics overlay to display the graphics.
+ private GraphicsOverlay _graphicsOverlay;
+
+ // Graphic that represents polygon1.
+ private Graphic _polygonGraphic1;
+
+ // Graphic that represents polygon2.
+ private Graphic _polygonGraphic2;
+
+ // Create a Switch to choose whether to union the resulting convex hull(s).
+ private Switch _convexHullListSwitch;
+
+ // Create a Button to create convex hull(s).
+ private Button _convexHullListButton;
+
+ protected override void OnCreate(Bundle bundle)
+ {
+ base.OnCreate(bundle);
+ Title = "Convex hull list";
+
+ // Create the UI, setup the control references and execute initialization.
+ CreateLayout();
+ Initialize();
+ }
+
+ private void Initialize()
+ {
+ // Create a map with a topographic basemap.
+ Map newMap = new Map(Basemap.CreateTopographic());
+
+ // Assign the map to the MapView.
+ _myMapView.Map = newMap;
+
+ // Create a graphics overlay to hold the various graphics.
+ _graphicsOverlay = new GraphicsOverlay();
+
+ // Add the created graphics overlay to the MapView.
+ _myMapView.GraphicsOverlays.Add(_graphicsOverlay);
+
+ // Create a simple line symbol for the outline for the two input polygon graphics.
+ SimpleLineSymbol polygonsSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ System.Drawing.Color.Blue, 4);
+
+ // Create the color that will be used for the fill of the two input polygon graphics. It will be a
+ // semi -transparent, blue color.
+ System.Drawing.Color polygonsFillColor = System.Drawing.Color.FromArgb(34, 0, 0, 255);
+
+ // Create the simple fill symbol for the two input polygon graphics - comprised of a fill style, fill
+ // color and outline.
+ SimpleFillSymbol polygonsSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, polygonsFillColor,
+ polygonsSimpleLineSymbol);
+
+ // Create the graphic for polygon1 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic1 = new Graphic(CreatePolygon1(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon1 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic1.ZIndex = 1;
+
+ // Add the polygon1 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic1);
+
+ // Create the graphic for polygon2 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic2 = new Graphic(CreatePolygon2(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon2 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic2.ZIndex = 1;
+
+ // Add the polygon2 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic2);
+ }
+
+ private Polygon CreatePolygon1()
+ {
+ // Create a point collection that represents polygon1. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection1 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon1 boundary map points to the point collection.
+ new MapPoint(-4983189.15470412, 8679428.55774286),
+ new MapPoint(-5222621.66664186, 5147799.00666126),
+ new MapPoint(-13483043.3284937, 4728792.11077023),
+ new MapPoint(-13273539.8805482, 2244679.79941622),
+ new MapPoint(-5372266.98660294, 2035176.3514707),
+ new MapPoint(-5432125.11458738, -4100281.76693377),
+ new MapPoint(-2469147.7793579, -4160139.89491821),
+ new MapPoint(-1900495.56350578, 2035176.3514707),
+ new MapPoint(2768438.41928007, 1975318.22348627),
+ new MapPoint(2409289.65137346, 5477018.71057565),
+ new MapPoint(-2409289.65137346, 5387231.518599),
+ new MapPoint(-2469147.7793579, 8709357.62173508)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon1 = new Polygon(pointCollection1);
+
+ // Return the polygon.
+ return polygon1;
+ }
+
+ private Polygon CreatePolygon2()
+ {
+ // Create a point collection that represents polygon2. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection2 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon2 boundary map points to the point collection.
+ new MapPoint(5993520.19456882, -1063938.49607736),
+ new MapPoint(3085421.63862418, -1383120.04490055),
+ new MapPoint(3794713.96934239, -2979027.78901651),
+ new MapPoint(6880135.60796657, -4078430.90162972),
+ new MapPoint(7092923.30718203, -2837169.32287287),
+ new MapPoint(8617901.81822617, -2092412.37561875),
+ new MapPoint(6986529.4575743, 354646.16535905),
+ new MapPoint(5319692.48038653, 1205796.96222089)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon2 = new Polygon(pointCollection2);
+
+ // Return the polygon.
+ return polygon2;
+ }
+
+ private void OnMakeUnionBufferClicked(object sender, EventArgs e)
+ {
+ try
+ {
+ // Get the boolean value whether to create a single convex hull (true) or independent convex hulls (false).
+ bool unionBool = (bool)_convexHullListSwitch.Checked;
+
+ // Add the geometries of the two polygon graphics to a list of geometries. It will be used as the 1st
+ // input parameter of the GeometryEngine.ConvexHull function.
+ List inputListOfGeomtries = new List
+ {
+ _polygonGraphic1.Geometry,
+ _polygonGraphic2.Geometry
+ };
+
+ // Get the returned result from the convex hull operation. When unionBool = true there will be one returned
+ // polygon, when unionBool = false there will be one convex hull returned per input geometry.
+ IEnumerable convexHullGeometries = GeometryEngine.ConvexHull(inputListOfGeomtries, unionBool);
+
+ // Loop through the returned geometries.
+ foreach (Geometry oneGeometry in convexHullGeometries)
+ {
+ // Create a simple line symbol for the outline of the convex hull graphic(s).
+ SimpleLineSymbol convexHullSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ System.Drawing.Color.Red, 10);
+
+ // Create the simple fill symbol for the convex hull graphic(s) - comprised of a fill style, fill
+ // color and outline. It will be a hollow (i.e.. see-through) polygon graphic with a thick red outline.
+ SimpleFillSymbol convexHullSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Null,
+ System.Drawing.Color.Red, convexHullSimpleLineSymbol);
+
+ // Create the graphic for the convex hull(s) - comprised of a polygon shape and fill symbol.
+ Graphic convexHullGraphic = new Graphic(oneGeometry, convexHullSimpleFillSymbol);
+
+ // Set the Z index for the convex hull graphic(s) so that they appear below the initial input graphics
+ // added earlier (polygon1 and polygon2).
+ convexHullGraphic.ZIndex = 0;
+
+ // Add the convex hull graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(convexHullGraphic);
+ }
+
+ // Disable the button after has been used.
+ _convexHullListButton.Enabled = false;
+ }
+ catch (System.Exception ex)
+ {
+ // Display an error message if there is a problem generating convex hull operation.
+ var alertBuilder = new AlertDialog.Builder(this);
+ alertBuilder.SetTitle("Geometry Engine Failed!");
+ alertBuilder.SetMessage(ex.ToString());
+ alertBuilder.Show();
+ }
+ }
+
+ private void CreateLayout()
+ {
+ // Create a new vertical layout for the app.
+ LinearLayout layout = new LinearLayout(this) { Orientation = Orientation.Vertical };
+
+ // Create a TextView for the sample instructions.
+ TextView sampleInstructionsTextView = new TextView(this);
+ sampleInstructionsTextView.Text = "Click the 'ConvexHull' button to create convex hull(s) from the polygon graphics. If the 'Union' checkbox " +
+ "is checked, the resulting output will be one polygon being the convex hull for the two input polygons. If the 'Union' checkbox is un-checked, " +
+ "the resulting output will have two convex hull polygons - one for each of the two input polygons.";
+ layout.AddView(sampleInstructionsTextView);
+
+ // Create a horizontal sub layout for the text view and switch controls.
+ var subLayout2 = new LinearLayout(this) { Orientation = Orientation.Horizontal };
+
+ // Create a TextView for the union label.
+ TextView unionInstructionsTextView = new TextView(this);
+ unionInstructionsTextView.Text = "Union:";
+ subLayout2.AddView(unionInstructionsTextView);
+
+ // Create a Switch for the union option.
+ _convexHullListSwitch = new Switch(this);
+ _convexHullListSwitch.Checked = true;
+ subLayout2.AddView(_convexHullListSwitch);
+
+ layout.AddView(subLayout2);
+
+ // Create button to create the convex hull(s).
+ _convexHullListButton = new Button(this);
+ _convexHullListButton.Text = "Convex Hull";
+ _convexHullListButton.Click += OnMakeUnionBufferClicked;
+ layout.AddView(_convexHullListButton);
+
+ // Add the map view to the layout.
+ layout.AddView(_myMapView);
+
+ // Show the layout in the app.
+ SetContentView(layout);
+ }
+ }
+}
\ No newline at end of file
diff --git a/src/Android/Xamarin.Android/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg b/src/Android/Xamarin.Android/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg
new file mode 100644
index 0000000000..2f9d1d89ba
Binary files /dev/null and b/src/Android/Xamarin.Android/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg differ
diff --git a/src/Forms/Shared/Forms.projitems b/src/Forms/Shared/Forms.projitems
index 83ff54c92c..84b340e7ae 100644
--- a/src/Forms/Shared/Forms.projitems
+++ b/src/Forms/Shared/Forms.projitems
@@ -131,6 +131,9 @@
ClipGeometry.xaml
+
+ ConvexHullList.xaml
+ ConvexHull.xaml
@@ -959,6 +962,7 @@
+
@@ -988,4 +992,11 @@
MSBuild:UpdateDesignTimeXaml
+
+
+ Designer
+ Never
+ MSBuild:UpdateDesignTimeXaml
+
+
\ No newline at end of file
diff --git a/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg b/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg
new file mode 100644
index 0000000000..b7c88f7d7b
Binary files /dev/null and b/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg differ
diff --git a/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml b/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml
new file mode 100644
index 0000000000..47e02cff7f
--- /dev/null
+++ b/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml
@@ -0,0 +1,33 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs b/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs
new file mode 100644
index 0000000000..cbf083647f
--- /dev/null
+++ b/src/Forms/Shared/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs
@@ -0,0 +1,202 @@
+// 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.
+
+using Esri.ArcGISRuntime.Geometry;
+using Esri.ArcGISRuntime.Mapping;
+using Esri.ArcGISRuntime.Symbology;
+using Esri.ArcGISRuntime.UI;
+using System;
+using System.Collections.Generic;
+using Xamarin.Forms;
+
+#if WINDOWS_UWP
+using Colors = Windows.UI.Colors;
+using Colors2 = Windows.UI.Color;
+#else
+using Colors = System.Drawing.Color;
+using Colors2 = System.Drawing.Color;
+#endif
+
+namespace ArcGISRuntime.Samples.ConvexHullList
+{
+ [ArcGISRuntime.Samples.Shared.Attributes.Sample(
+ "Convex hull list",
+ "GeometryEngine",
+ "This sample demonstrates how to use the GeometryEngine.ConvexHull to generate convex hull polygon(s) from multiple input geometries.",
+ "Click the 'ConvexHull' button to create convex hull(s) from the polygon graphics. If the 'Union' checkbox is checked, the resulting output will be one polygon being the convex hull for the two input polygons. If the 'Union' checkbox is un-checked, the resulting output will have two convex hull polygons - one for each of the two input polygons.",
+ "Analysis", "ConvexHull", "GeometryEngine")]
+ public partial class ConvexHullList : ContentPage
+ {
+ // Graphics overlay to display the graphics.
+ private GraphicsOverlay _graphicsOverlay;
+
+ // Graphic that represents polygon1.
+ private Graphic _polygonGraphic1;
+
+ // Graphic that represents polygon2.
+ private Graphic _polygonGraphic2;
+
+ public ConvexHullList()
+ {
+ InitializeComponent();
+
+ Title = "Convex hull list";
+
+ Initialize();
+ }
+
+ private void Initialize()
+ {
+ // Create a map with a topographic basemap.
+ Map newMap = new Map(Basemap.CreateTopographic());
+
+ // Assign the map to the MapView.
+ MyMapView.Map = newMap;
+
+ // Create a graphics overlay to hold the various graphics.
+ _graphicsOverlay = new GraphicsOverlay();
+
+ // Add the created graphics overlay to the MapView.
+ MyMapView.GraphicsOverlays.Add(_graphicsOverlay);
+
+ // Create a simple line symbol for the outline for the two input polygon graphics.
+ SimpleLineSymbol polygonsSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ Colors.Blue, 4);
+
+ // Create the color that will be used for the fill of the two input polygon graphics. It will be a
+ // semi -transparent, blue color.
+ Colors2 polygonsFillColor = Colors2.FromArgb(34, 0, 0, 255);
+
+ // Create the simple fill symbol for the two input polygon graphics - comprised of a fill style, fill
+ // color and outline.
+ SimpleFillSymbol polygonsSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, polygonsFillColor,
+ polygonsSimpleLineSymbol);
+
+ // Create the graphic for polygon1 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic1 = new Graphic(CreatePolygon1(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon1 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic1.ZIndex = 1;
+
+ // Add the polygon1 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic1);
+
+ // Create the graphic for polygon2 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic2 = new Graphic(CreatePolygon2(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon2 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic2.ZIndex = 1;
+
+ // Add the polygon2 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic2);
+ }
+
+ private Polygon CreatePolygon1()
+ {
+ // Create a point collection that represents polygon1. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection1 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon1 boundary map points to the point collection.
+ new MapPoint(-4983189.15470412, 8679428.55774286),
+ new MapPoint(-5222621.66664186, 5147799.00666126),
+ new MapPoint(-13483043.3284937, 4728792.11077023),
+ new MapPoint(-13273539.8805482, 2244679.79941622),
+ new MapPoint(-5372266.98660294, 2035176.3514707),
+ new MapPoint(-5432125.11458738, -4100281.76693377),
+ new MapPoint(-2469147.7793579, -4160139.89491821),
+ new MapPoint(-1900495.56350578, 2035176.3514707),
+ new MapPoint(2768438.41928007, 1975318.22348627),
+ new MapPoint(2409289.65137346, 5477018.71057565),
+ new MapPoint(-2409289.65137346, 5387231.518599),
+ new MapPoint(-2469147.7793579, 8709357.62173508)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon1 = new Polygon(pointCollection1);
+
+ // Return the polygon.
+ return polygon1;
+ }
+
+ private Polygon CreatePolygon2()
+ {
+ // Create a point collection that represents polygon2. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection2 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon2 boundary map points to the point collection.
+ new MapPoint(5993520.19456882, -1063938.49607736),
+ new MapPoint(3085421.63862418, -1383120.04490055),
+ new MapPoint(3794713.96934239, -2979027.78901651),
+ new MapPoint(6880135.60796657, -4078430.90162972),
+ new MapPoint(7092923.30718203, -2837169.32287287),
+ new MapPoint(8617901.81822617, -2092412.37561875),
+ new MapPoint(6986529.4575743, 354646.16535905),
+ new MapPoint(5319692.48038653, 1205796.96222089)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon2 = new Polygon(pointCollection2);
+
+ // Return the polygon.
+ return polygon2;
+ }
+
+ private void ConvexHullListButton_Clicked(object sender, EventArgs e)
+ {
+ try
+ {
+ // Get the boolean value whether to create a single convex hull (true) or independent convex hulls (false).
+ bool unionBool = (bool)ConvexHullListSwitch.IsToggled;
+
+ // Add the geometries of the two polygon graphics to a list of geometries. It will be used as the 1st
+ // input parameter of the GeometryEngine.ConvexHull function.
+ List inputListOfGeomtries = new List
+ {
+ _polygonGraphic1.Geometry,
+ _polygonGraphic2.Geometry
+ };
+
+ // Get the returned result from the convex hull operation. When unionBool = true there will be one returned
+ // polygon, when unionBool = false there will be one convex hull returned per input geometry.
+ IEnumerable convexHullGeometries = GeometryEngine.ConvexHull(inputListOfGeomtries, unionBool);
+
+ // Loop through the returned geometries.
+ foreach (Geometry oneGeometry in convexHullGeometries)
+ {
+ // Create a simple line symbol for the outline of the convex hull graphic(s).
+ SimpleLineSymbol convexHullSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ Colors.Red, 10);
+
+ // Create the simple fill symbol for the convex hull graphic(s) - comprised of a fill style, fill
+ // color and outline. It will be a hollow (i.e.. see-through) polygon graphic with a thick red outline.
+ SimpleFillSymbol convexHullSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Null,
+ Colors.Red, convexHullSimpleLineSymbol);
+
+ // Create the graphic for the convex hull(s) - comprised of a polygon shape and fill symbol.
+ Graphic convexHullGraphic = new Graphic(oneGeometry, convexHullSimpleFillSymbol);
+
+ // Set the Z index for the convex hull graphic(s) so that they appear below the initial input graphics
+ // added earlier (polygon1 and polygon2).
+ convexHullGraphic.ZIndex = 0;
+
+ // Add the convex hull graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(convexHullGraphic);
+ }
+
+ // Disable the button after has been used.
+ ConvexHullListButton.IsEnabled = false;
+ }
+ catch (System.Exception ex)
+ {
+ // Display an error message if there is a problem generating convex hull operation.
+ DisplayAlert("Geometry Engine Failed", "Error creating convex hull: " + ex.Message, "OK");
+
+ }
+ }
+
+ }
+}
\ No newline at end of file
diff --git a/src/UWP/ArcGISRuntime.UWP.Viewer/ArcGISRuntime.UWP.Viewer.csproj b/src/UWP/ArcGISRuntime.UWP.Viewer/ArcGISRuntime.UWP.Viewer.csproj
index fd071df110..e36e578a4f 100644
--- a/src/UWP/ArcGISRuntime.UWP.Viewer/ArcGISRuntime.UWP.Viewer.csproj
+++ b/src/UWP/ArcGISRuntime.UWP.Viewer/ArcGISRuntime.UWP.Viewer.csproj
@@ -136,6 +136,7 @@
+
@@ -350,6 +351,9 @@
ClipGeometry.xaml
+
+ ConvexHullList.xaml
+ CutGeometry.xaml
@@ -722,6 +726,10 @@
MSBuild:CompileDesigner
+
+ MSBuild:Compile
+ Designer
+ MSBuild:CompileDesigner
diff --git a/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg b/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg
new file mode 100644
index 0000000000..dcbae97481
Binary files /dev/null and b/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg differ
diff --git a/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml b/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml
new file mode 100644
index 0000000000..42c1dbf8bd
--- /dev/null
+++ b/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml
@@ -0,0 +1,36 @@
+
+
+
+
+
+
+ Click the 'ConvexHull' button to create convex hull(s) from the polygon
+ graphics. If the 'Union' checkbox is checked, the resulting output will
+ be one polygon being the convex hull for the two input polygons. If the
+ 'Union' checkbox is un-checked, the resulting output will have two convex
+ hull polygons - one for each of the two input polygons.
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs b/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs
new file mode 100644
index 0000000000..8ba469db93
--- /dev/null
+++ b/src/UWP/ArcGISRuntime.UWP.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs
@@ -0,0 +1,193 @@
+// 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.
+
+using Esri.ArcGISRuntime.Geometry;
+using Esri.ArcGISRuntime.Mapping;
+using Esri.ArcGISRuntime.Symbology;
+using Esri.ArcGISRuntime.UI;
+using System;
+using System.Collections.Generic;
+using Windows.UI.Popups;
+using Windows.UI.Xaml;
+
+namespace ArcGISRuntime.UWP.Samples.ConvexHullList
+{
+ [ArcGISRuntime.Samples.Shared.Attributes.Sample(
+ "Convex hull list",
+ "GeometryEngine",
+ "This sample demonstrates how to use the GeometryEngine.ConvexHull to generate convex hull polygon(s) from multiple input geometries.",
+ "Click the 'ConvexHull' button to create convex hull(s) from the polygon graphics. If the 'Union' checkbox is checked, the resulting output will be one polygon being the convex hull for the two input polygons. If the 'Union' checkbox is un-checked, the resulting output will have two convex hull polygons - one for each of the two input polygons.",
+ "Analysis", "ConvexHull", "GeometryEngine")]
+ public partial class ConvexHullList
+ {
+ // Graphics overlay to display the graphics.
+ private GraphicsOverlay _graphicsOverlay;
+
+ // Graphic that represents polygon1.
+ private Graphic _polygonGraphic1;
+
+ // Graphic that represents polygon2.
+ private Graphic _polygonGraphic2;
+
+ public ConvexHullList()
+ {
+ InitializeComponent();
+
+ Initialize();
+ }
+
+ private void Initialize()
+ {
+ // Create a map with a topographic basemap.
+ Map newMap = new Map(Basemap.CreateTopographic());
+
+ // Assign the map to the MapView.
+ MyMapView.Map = newMap;
+
+ // Create a graphics overlay to hold the various graphics.
+ _graphicsOverlay = new GraphicsOverlay();
+
+ // Add the created graphics overlay to the MapView.
+ MyMapView.GraphicsOverlays.Add(_graphicsOverlay);
+
+ // Create a simple line symbol for the outline for the two input polygon graphics.
+ SimpleLineSymbol polygonsSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ Windows.UI.Colors.Blue, 4);
+
+ // Create the color that will be used for the fill of the two input polygon graphics. It will be a
+ // semi -transparent, blue color.
+ Windows.UI.Color polygonsFillColor = Windows.UI.Color.FromArgb(34, 0, 0, 255);
+
+ // Create the simple fill symbol for the two input polygon graphics - comprised of a fill style, fill
+ // color and outline.
+ SimpleFillSymbol polygonsSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, polygonsFillColor,
+ polygonsSimpleLineSymbol);
+
+ // Create the graphic for polygon1 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic1 = new Graphic(CreatePolygon1(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon1 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic1.ZIndex = 1;
+
+ // Add the polygon1 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic1);
+
+ // Create the graphic for polygon2 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic2 = new Graphic(CreatePolygon2(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon2 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic2.ZIndex = 1;
+
+ // Add the polygon2 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic2);
+ }
+
+ private Polygon CreatePolygon1()
+ {
+ // Create a point collection that represents polygon1. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection1 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon1 boundary map points to the point collection.
+ new MapPoint(-4983189.15470412, 8679428.55774286),
+ new MapPoint(-5222621.66664186, 5147799.00666126),
+ new MapPoint(-13483043.3284937, 4728792.11077023),
+ new MapPoint(-13273539.8805482, 2244679.79941622),
+ new MapPoint(-5372266.98660294, 2035176.3514707),
+ new MapPoint(-5432125.11458738, -4100281.76693377),
+ new MapPoint(-2469147.7793579, -4160139.89491821),
+ new MapPoint(-1900495.56350578, 2035176.3514707),
+ new MapPoint(2768438.41928007, 1975318.22348627),
+ new MapPoint(2409289.65137346, 5477018.71057565),
+ new MapPoint(-2409289.65137346, 5387231.518599),
+ new MapPoint(-2469147.7793579, 8709357.62173508)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon1 = new Polygon(pointCollection1);
+
+ // Return the polygon.
+ return polygon1;
+ }
+
+ private Polygon CreatePolygon2()
+ {
+ // Create a point collection that represents polygon2. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection2 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon2 boundary map points to the point collection.
+ new MapPoint(5993520.19456882, -1063938.49607736),
+ new MapPoint(3085421.63862418, -1383120.04490055),
+ new MapPoint(3794713.96934239, -2979027.78901651),
+ new MapPoint(6880135.60796657, -4078430.90162972),
+ new MapPoint(7092923.30718203, -2837169.32287287),
+ new MapPoint(8617901.81822617, -2092412.37561875),
+ new MapPoint(6986529.4575743, 354646.16535905),
+ new MapPoint(5319692.48038653, 1205796.96222089)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon2 = new Polygon(pointCollection2);
+
+ // Return the polygon.
+ return polygon2;
+ }
+
+ private async void ConvexHullListButton_Click(object sender, RoutedEventArgs e)
+ {
+ try
+ {
+ // Get the boolean value whether to create a single convex hull (true) or independent convex hulls (false).
+ bool unionBool = (bool)ConvexHullListCheckBox.IsChecked;
+
+ // Add the geometries of the two polygon graphics to a list of geometries. It will be used as the 1st
+ // input parameter of the GeometryEngine.ConvexHull function.
+ List inputListOfGeomtries = new List
+ {
+ _polygonGraphic1.Geometry,
+ _polygonGraphic2.Geometry
+ };
+
+ // Get the returned result from the convex hull operation. When unionBool = true there will be one returned
+ // polygon, when unionBool = false there will be one convex hull returned per input geometry.
+ IEnumerable convexHullGeometries = GeometryEngine.ConvexHull(inputListOfGeomtries, unionBool);
+
+ // Loop through the returned geometries.
+ foreach (Geometry oneGeometry in convexHullGeometries)
+ {
+ // Create a simple line symbol for the outline of the convex hull graphic(s).
+ SimpleLineSymbol convexHullSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ Windows.UI.Colors.Red, 10);
+
+ // Create the simple fill symbol for the convex hull graphic(s) - comprised of a fill style, fill
+ // color and outline. It will be a hollow (i.e.. see-through) polygon graphic with a thick red outline.
+ SimpleFillSymbol convexHullSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Null,
+ Windows.UI.Colors.Red, convexHullSimpleLineSymbol);
+
+ // Create the graphic for the convex hull(s) - comprised of a polygon shape and fill symbol.
+ Graphic convexHullGraphic = new Graphic(oneGeometry, convexHullSimpleFillSymbol);
+
+ // Set the Z index for the convex hull graphic(s) so that they appear below the initial input graphics
+ // added earlier (polygon1 and polygon2).
+ convexHullGraphic.ZIndex = 0;
+
+ // Add the convex hull graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(convexHullGraphic);
+ }
+
+ // Disable the button after has been used.
+ ConvexHullListCheckBox.IsEnabled = false;
+ }
+ catch (System.Exception ex)
+ {
+ // Display an error message if there is a problem generating convex hull operation.
+ MessageDialog theMessageDialog = new MessageDialog("Geometry Engine Failed: " + ex.Message);
+ await theMessageDialog.ShowAsync();
+ }
+ }
+
+ }
+}
\ No newline at end of file
diff --git a/src/WPF/ArcGISRuntime.WPF.Viewer/ArcGISRuntime.WPF.Viewer.csproj b/src/WPF/ArcGISRuntime.WPF.Viewer/ArcGISRuntime.WPF.Viewer.csproj
index fe717301cf..00ce8bbeab 100644
--- a/src/WPF/ArcGISRuntime.WPF.Viewer/ArcGISRuntime.WPF.Viewer.csproj
+++ b/src/WPF/ArcGISRuntime.WPF.Viewer/ArcGISRuntime.WPF.Viewer.csproj
@@ -182,6 +182,9 @@
ClipGeometry.xaml
+
+ ConvexHullList.xaml
+ ConvexHull.xaml
@@ -571,6 +574,10 @@
MSBuild:CompileDesigner
+
+ MSBuild:Compile
+ Designer
+ MSBuild:CompileDesigner
@@ -1032,6 +1039,9 @@
PreserveNewest
+
+ PreserveNewest
+ PreserveNewest
diff --git a/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg b/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg
new file mode 100644
index 0000000000..daaa7b2656
Binary files /dev/null and b/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.jpg differ
diff --git a/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml b/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml
new file mode 100644
index 0000000000..1eb85859df
--- /dev/null
+++ b/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+ Click the 'ConvexHull' button to create convex hull(s) from the polygon
+ graphics. If the 'Union' checkbox is checked, the resulting output will
+ be one polygon being the convex hull for the two input polygons. If the
+ 'Union' checkbox is un-checked, the resulting output will have two convex
+ hull polygons - one for each of the two input polygons.
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs b/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs
new file mode 100644
index 0000000000..a65aa7dda2
--- /dev/null
+++ b/src/WPF/ArcGISRuntime.WPF.Viewer/Samples/GeometryEngine/ConvexHullList/ConvexHullList.xaml.cs
@@ -0,0 +1,190 @@
+// 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.
+
+using System.Collections.Generic;
+using System.Windows;
+using Esri.ArcGISRuntime.Geometry;
+using Esri.ArcGISRuntime.Mapping;
+using Esri.ArcGISRuntime.Symbology;
+using Esri.ArcGISRuntime.UI;
+
+namespace ArcGISRuntime.WPF.Samples.ConvexHullList
+{
+ [ArcGISRuntime.Samples.Shared.Attributes.Sample(
+ "Convex hull list",
+ "GeometryEngine",
+ "This sample demonstrates how to use the GeometryEngine.ConvexHull to generate convex hull polygon(s) from multiple input geometries.",
+ "Click the 'ConvexHull' button to create convex hull(s) from the polygon graphics. If the 'Union' checkbox is checked, the resulting output will be one polygon being the convex hull for the two input polygons. If the 'Union' checkbox is un-checked, the resulting output will have two convex hull polygons - one for each of the two input polygons.",
+ "Analysis","ConvexHull","GeometryEngine")]
+ public partial class ConvexHullList
+ {
+ // Graphics overlay to display the graphics.
+ private GraphicsOverlay _graphicsOverlay;
+
+ // Graphic that represents polygon1.
+ private Graphic _polygonGraphic1;
+
+ // Graphic that represents polygon2.
+ private Graphic _polygonGraphic2;
+
+ public ConvexHullList()
+ {
+ InitializeComponent();
+
+ Initialize();
+ }
+
+ private void Initialize()
+ {
+ // Create a map with a topographic basemap.
+ Map newMap = new Map(Basemap.CreateTopographic());
+
+ // Assign the map to the MapView.
+ MyMapView.Map = newMap;
+
+ // Create a graphics overlay to hold the various graphics.
+ _graphicsOverlay = new GraphicsOverlay();
+
+ // Add the created graphics overlay to the MapView.
+ MyMapView.GraphicsOverlays.Add(_graphicsOverlay);
+
+ // Create a simple line symbol for the outline for the two input polygon graphics.
+ SimpleLineSymbol polygonsSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ System.Windows.Media.Colors.Blue, 4);
+
+ // Create the color that will be used for the fill of the two input polygon graphics. It will be a
+ // semi -transparent, blue color.
+ System.Windows.Media.Color polygonsFillColor = System.Windows.Media.Color.FromArgb(34, 0, 0, 255);
+
+ // Create the simple fill symbol for the two input polygon graphics - comprised of a fill style, fill
+ // color and outline.
+ SimpleFillSymbol polygonsSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, polygonsFillColor,
+ polygonsSimpleLineSymbol);
+
+ // Create the graphic for polygon1 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic1 = new Graphic(CreatePolygon1(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon1 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic1.ZIndex = 1;
+
+ // Add the polygon1 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic1);
+
+ // Create the graphic for polygon2 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic2 = new Graphic(CreatePolygon2(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon2 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic2.ZIndex = 1;
+
+ // Add the polygon2 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic2);
+ }
+
+ private Polygon CreatePolygon1()
+ {
+ // Create a point collection that represents polygon1. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection1 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon1 boundary map points to the point collection.
+ new MapPoint(-4983189.15470412, 8679428.55774286),
+ new MapPoint(-5222621.66664186, 5147799.00666126),
+ new MapPoint(-13483043.3284937, 4728792.11077023),
+ new MapPoint(-13273539.8805482, 2244679.79941622),
+ new MapPoint(-5372266.98660294, 2035176.3514707),
+ new MapPoint(-5432125.11458738, -4100281.76693377),
+ new MapPoint(-2469147.7793579, -4160139.89491821),
+ new MapPoint(-1900495.56350578, 2035176.3514707),
+ new MapPoint(2768438.41928007, 1975318.22348627),
+ new MapPoint(2409289.65137346, 5477018.71057565),
+ new MapPoint(-2409289.65137346, 5387231.518599),
+ new MapPoint(-2469147.7793579, 8709357.62173508)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon1 = new Polygon(pointCollection1);
+
+ // Return the polygon.
+ return polygon1;
+ }
+
+ private Polygon CreatePolygon2()
+ {
+ // Create a point collection that represents polygon2. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection2 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon2 boundary map points to the point collection.
+ new MapPoint(5993520.19456882, -1063938.49607736),
+ new MapPoint(3085421.63862418, -1383120.04490055),
+ new MapPoint(3794713.96934239, -2979027.78901651),
+ new MapPoint(6880135.60796657, -4078430.90162972),
+ new MapPoint(7092923.30718203, -2837169.32287287),
+ new MapPoint(8617901.81822617, -2092412.37561875),
+ new MapPoint(6986529.4575743, 354646.16535905),
+ new MapPoint(5319692.48038653, 1205796.96222089)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon2 = new Polygon(pointCollection2);
+
+ // Return the polygon.
+ return polygon2;
+ }
+
+ private void ConvexHullListButton_Click(object sender, RoutedEventArgs e)
+ {
+ try
+ {
+ // Get the boolean value whether to create a single convex hull (true) or independent convex hulls (false).
+ bool unionBool = (bool)ConvexHullListCheckBox.IsChecked;
+
+ // Add the geometries of the two polygon graphics to a list of geometries. It will be used as the 1st
+ // input parameter of the GeometryEngine.ConvexHull function.
+ List inputListOfGeomtries = new List
+ {
+ _polygonGraphic1.Geometry,
+ _polygonGraphic2.Geometry
+ };
+
+ // Get the returned result from the convex hull operation. When unionBool = true there will be one returned
+ // polygon, when unionBool = false there will be one convex hull returned per input geometry.
+ IEnumerable convexHullGeometries = GeometryEngine.ConvexHull(inputListOfGeomtries, unionBool);
+
+ // Loop through the returned geometries.
+ foreach (Geometry oneGeometry in convexHullGeometries)
+ {
+ // Create a simple line symbol for the outline of the convex hull graphic(s).
+ SimpleLineSymbol convexHullSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ System.Windows.Media.Colors.Red, 10);
+
+ // Create the simple fill symbol for the convex hull graphic(s) - comprised of a fill style, fill
+ // color and outline. It will be a hollow (i.e.. see-through) polygon graphic with a thick red outline.
+ SimpleFillSymbol convexHullSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Null,
+ System.Windows.Media.Colors.Red, convexHullSimpleLineSymbol);
+
+ // Create the graphic for the convex hull(s) - comprised of a polygon shape and fill symbol.
+ Graphic convexHullGraphic = new Graphic(oneGeometry, convexHullSimpleFillSymbol);
+
+ // Set the Z index for the convex hull graphic(s) so that they appear below the initial input graphics
+ // added earlier (polygon1 and polygon2).
+ convexHullGraphic.ZIndex = 0;
+
+ // Add the convex hull graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(convexHullGraphic);
+ }
+
+ // Disable the button after has been used.
+ ConvexHullListCheckBox.IsEnabled = false;
+ }
+ catch (System.Exception ex)
+ {
+ // Display an error message if there is a problem generating convex hull operation.
+ MessageBox.Show(ex.Message, "Geometry Engine Failed!");
+ }
+ }
+
+ }
+}
\ No newline at end of file
diff --git a/src/iOS/Xamarin.iOS/ArcGISRuntime.Xamarin.Samples.iOS.csproj b/src/iOS/Xamarin.iOS/ArcGISRuntime.Xamarin.Samples.iOS.csproj
index c64ec5f59e..e14179ea0a 100644
--- a/src/iOS/Xamarin.iOS/ArcGISRuntime.Xamarin.Samples.iOS.csproj
+++ b/src/iOS/Xamarin.iOS/ArcGISRuntime.Xamarin.Samples.iOS.csproj
@@ -339,6 +339,7 @@
+
@@ -484,6 +485,9 @@
+
+
+
diff --git a/src/iOS/Xamarin.iOS/Samples/GeometryEngine/ConvexHullList/ConvexHullList.cs b/src/iOS/Xamarin.iOS/Samples/GeometryEngine/ConvexHullList/ConvexHullList.cs
new file mode 100644
index 0000000000..b2368a5cb7
--- /dev/null
+++ b/src/iOS/Xamarin.iOS/Samples/GeometryEngine/ConvexHullList/ConvexHullList.cs
@@ -0,0 +1,273 @@
+// 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.
+
+using Esri.ArcGISRuntime.Geometry;
+using Esri.ArcGISRuntime.Mapping;
+using Esri.ArcGISRuntime.Symbology;
+using Esri.ArcGISRuntime.UI;
+using Esri.ArcGISRuntime.UI.Controls;
+using Foundation;
+using System;
+using System.Collections.Generic;
+using UIKit;
+
+namespace ArcGISRuntime.Samples.ConvexHullList
+{
+ [Register("ConvexHullList")]
+ [ArcGISRuntime.Samples.Shared.Attributes.Sample(
+ "Convex hull list",
+ "GeometryEngine",
+ "This sample demonstrates how to use the GeometryEngine.ConvexHull to generate convex hull polygon(s) from multiple input geometries.",
+ "Click the 'ConvexHull' button to create convex hull(s) from the polygon graphics. If the 'Union' checkbox is checked, the resulting output will be one polygon being the convex hull for the two input polygons. If the 'Union' checkbox is un-checked, the resulting output will have two convex hull polygons - one for each of the two input polygons.",
+ "Analysis", "ConvexHull", "GeometryEngine")]
+ public class ConvexHullList : UIViewController
+ {
+ // Create and hold reference to the used MapView.
+ private MapView _myMapView = new MapView();
+
+ // Graphics overlay to display the graphics.
+ private GraphicsOverlay _graphicsOverlay;
+
+ // Graphic that represents polygon1.
+ private Graphic _polygonGraphic1;
+
+ // Graphic that represents polygon2.
+ private Graphic _polygonGraphic2;
+
+ // Text view to display the instructions for the sample.
+ UITextView _sampleInstructionUITextiew;
+
+ // Create a UILabel to display label for the UISwitch.
+ private UILabel _convexHullListInstructionsUILabel;
+
+ // Create a UISwitch to toggle whether to union the convex hull(s).
+ private UISwitch _convexHullListUISwitch;
+
+ // Create a UIButton to create convex hull(s).
+ private UIButton _convexHullListButton;
+
+ public ConvexHullList()
+ {
+ Title = "Convex hull list";
+ }
+
+ public override void ViewDidLoad()
+ {
+ base.ViewDidLoad();
+
+ // Create the UI, setup the control references and execute initialization.
+ CreateLayout();
+ Initialize();
+ }
+
+ public override void ViewDidLayoutSubviews()
+ {
+ // Setup the visual frame for the MapView.
+ _myMapView.Frame = new CoreGraphics.CGRect(0, 160, View.Bounds.Width, View.Bounds.Height);
+
+ // Determine the offset where the MapView control should start.
+ nfloat yPageOffset = NavigationController.NavigationBar.Frame.Height + UIApplication.SharedApplication.StatusBarFrame.Height;
+
+ // Setup the visual frame for the general sample instructions UTexView.
+ _sampleInstructionUITextiew.Frame = new CoreGraphics.CGRect(0, yPageOffset, View.Bounds.Width, 80);
+
+ // Setup the visual frame for the instructions UILabel.
+ _convexHullListInstructionsUILabel.Frame = new CoreGraphics.CGRect(0, yPageOffset + 80, View.Bounds.Width, 40);
+
+ // Setup the visual frame for the union toggle value UISwitch.
+ _convexHullListUISwitch.Frame = new CoreGraphics.CGRect(175, yPageOffset + 80, View.Bounds.Width, 40);
+
+ // Setup the visual frame for the make convex hull(s) UIButton.
+ _convexHullListButton.Frame = new CoreGraphics.CGRect(0, yPageOffset + 120, View.Bounds.Width, 40);
+
+ base.ViewDidLayoutSubviews();
+ }
+
+ private void Initialize()
+ {
+ // Create a map with a topographic basemap.
+ Map newMap = new Map(Basemap.CreateTopographic());
+
+ // Assign the map to the MapView.
+ _myMapView.Map = newMap;
+
+ // Create a graphics overlay to hold the various graphics.
+ _graphicsOverlay = new GraphicsOverlay();
+
+ // Add the created graphics overlay to the MapView.
+ _myMapView.GraphicsOverlays.Add(_graphicsOverlay);
+
+ // Create a simple line symbol for the outline for the two input polygon graphics.
+ SimpleLineSymbol polygonsSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ System.Drawing.Color.Blue, 4);
+
+ // Create the color that will be used for the fill of the two input polygon graphics. It will be a
+ // semi -transparent, blue color.
+ System.Drawing.Color polygonsFillColor = System.Drawing.Color.FromArgb(34, 0, 0, 255);
+
+ // Create the simple fill symbol for the two input polygon graphics - comprised of a fill style, fill
+ // color and outline.
+ SimpleFillSymbol polygonsSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, polygonsFillColor,
+ polygonsSimpleLineSymbol);
+
+ // Create the graphic for polygon1 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic1 = new Graphic(CreatePolygon1(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon1 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic1.ZIndex = 1;
+
+ // Add the polygon1 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic1);
+
+ // Create the graphic for polygon2 - comprised of a polygon shape and fill symbol.
+ _polygonGraphic2 = new Graphic(CreatePolygon2(), polygonsSimpleFillSymbol);
+
+ // Set the Z index for the polygon2 graphic so that it appears above the convex hull graphic(s) added later.
+ _polygonGraphic2.ZIndex = 1;
+
+ // Add the polygon2 graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(_polygonGraphic2);
+ }
+
+ private Polygon CreatePolygon1()
+ {
+ // Create a point collection that represents polygon1. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection1 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon1 boundary map points to the point collection.
+ new MapPoint(-4983189.15470412, 8679428.55774286),
+ new MapPoint(-5222621.66664186, 5147799.00666126),
+ new MapPoint(-13483043.3284937, 4728792.11077023),
+ new MapPoint(-13273539.8805482, 2244679.79941622),
+ new MapPoint(-5372266.98660294, 2035176.3514707),
+ new MapPoint(-5432125.11458738, -4100281.76693377),
+ new MapPoint(-2469147.7793579, -4160139.89491821),
+ new MapPoint(-1900495.56350578, 2035176.3514707),
+ new MapPoint(2768438.41928007, 1975318.22348627),
+ new MapPoint(2409289.65137346, 5477018.71057565),
+ new MapPoint(-2409289.65137346, 5387231.518599),
+ new MapPoint(-2469147.7793579, 8709357.62173508)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon1 = new Polygon(pointCollection1);
+
+ // Return the polygon.
+ return polygon1;
+ }
+
+ private Polygon CreatePolygon2()
+ {
+ // Create a point collection that represents polygon2. Use the same spatial reference as the underlying base map.
+ PointCollection pointCollection2 = new PointCollection(SpatialReferences.WebMercator)
+ {
+ // Add all of the polygon2 boundary map points to the point collection.
+ new MapPoint(5993520.19456882, -1063938.49607736),
+ new MapPoint(3085421.63862418, -1383120.04490055),
+ new MapPoint(3794713.96934239, -2979027.78901651),
+ new MapPoint(6880135.60796657, -4078430.90162972),
+ new MapPoint(7092923.30718203, -2837169.32287287),
+ new MapPoint(8617901.81822617, -2092412.37561875),
+ new MapPoint(6986529.4575743, 354646.16535905),
+ new MapPoint(5319692.48038653, 1205796.96222089)
+ };
+ // Create a polyline geometry from the point collection.
+ Polygon polygon2 = new Polygon(pointCollection2);
+
+ // Return the polygon.
+ return polygon2;
+ }
+ private void BufferButton_Click(object sender, EventArgs e)
+ {
+ try
+ {
+ // Get the boolean value whether to create a single convex hull (true) or independent convex hulls (false).
+ bool unionBool = (bool)_convexHullListUISwitch.On;
+
+ // Add the geometries of the two polygon graphics to a list of geometries. It will be used as the 1st
+ // input parameter of the GeometryEngine.ConvexHull function.
+ List inputListOfGeomtries = new List
+ {
+ _polygonGraphic1.Geometry,
+ _polygonGraphic2.Geometry
+ };
+
+ // Get the returned result from the convex hull operation. When unionBool = true there will be one returned
+ // polygon, when unionBool = false there will be one convex hull returned per input geometry.
+ IEnumerable convexHullGeometries = GeometryEngine.ConvexHull(inputListOfGeomtries, unionBool);
+
+ // Loop through the returned geometries.
+ foreach (Geometry oneGeometry in convexHullGeometries)
+ {
+ // Create a simple line symbol for the outline of the convex hull graphic(s).
+ SimpleLineSymbol convexHullSimpleLineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid,
+ System.Drawing.Color.Red, 10);
+
+ // Create the simple fill symbol for the convex hull graphic(s) - comprised of a fill style, fill
+ // color and outline. It will be a hollow (i.e.. see-through) polygon graphic with a thick red outline.
+ SimpleFillSymbol convexHullSimpleFillSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Null,
+ System.Drawing.Color.Red, convexHullSimpleLineSymbol);
+
+ // Create the graphic for the convex hull(s) - comprised of a polygon shape and fill symbol.
+ Graphic convexHullGraphic = new Graphic(oneGeometry, convexHullSimpleFillSymbol);
+
+ // Set the Z index for the convex hull graphic(s) so that they appear below the initial input graphics
+ // added earlier (polygon1 and polygon2).
+ convexHullGraphic.ZIndex = 0;
+
+ // Add the convex hull graphic to the graphics overlay collection.
+ _graphicsOverlay.Graphics.Add(convexHullGraphic);
+ }
+
+ // Disable the button after has been used.
+ _convexHullListButton.Enabled = false;
+ _convexHullListButton.SetTitleColor(UIColor.Gray, UIControlState.Disabled);
+ }
+ catch (System.Exception ex)
+ {
+ // Display an error message if there is a problem generating convex hull operation.
+ UIAlertController alertController = UIAlertController.Create("Geometry Engine Failed!", ex.Message, UIAlertControllerStyle.Alert);
+ alertController.AddAction(UIAlertAction.Create("OK", UIAlertActionStyle.Default, null));
+ PresentViewController(alertController, true, null);
+ return;
+ }
+ }
+
+ private void CreateLayout()
+ {
+ // Create a UITextView for the overall sample instructions.
+ _sampleInstructionUITextiew = new UITextView();
+ _sampleInstructionUITextiew.Text = "Click the 'ConvexHull' button to create convex hull(s) from the polygon graphics. If the 'Union' checkbox " +
+ "is checked, the resulting output will be one polygon being the convex hull for the two input polygons. If the 'Union' checkbox is un-checked, " +
+ "the resulting output will have two convex hull polygons - one for each of the two input polygons.";
+ _sampleInstructionUITextiew.Font = UIFont.FromName("Helvetica", 9f);
+
+ // Create a UILabel for the UISwitch label.
+ _convexHullListInstructionsUILabel = new UILabel();
+ _convexHullListInstructionsUILabel.Text = "Union:";
+ _convexHullListInstructionsUILabel.AdjustsFontSizeToFitWidth = true;
+ _convexHullListInstructionsUILabel.BackgroundColor = UIColor.White;
+
+ // Create a UISwitch for toggling the union of the convex hull(s).
+ _convexHullListUISwitch = new UISwitch();
+ _convexHullListUISwitch.On = true;
+ _convexHullListUISwitch.BackgroundColor = UIColor.White;
+
+ // Create a UIButton to create the convex hull(s).
+ _convexHullListButton = new UIButton();
+ _convexHullListButton.SetTitle("Convex Hull", UIControlState.Normal);
+ _convexHullListButton.SetTitleColor(UIColor.Blue, UIControlState.Normal);
+ _convexHullListButton.BackgroundColor = UIColor.White;
+ // - Hook to touch event to do querying
+ _convexHullListButton.TouchUpInside += BufferButton_Click;
+
+ // Add the MapView and other controls to the page.
+ View.AddSubviews(_myMapView, _sampleInstructionUITextiew, _convexHullListInstructionsUILabel, _convexHullListUISwitch, _convexHullListButton);
+ }
+ }
+}
\ No newline at end of file
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