PolygonTool .cs

// Based on BufferedLineTool.cs which came with the following copyright and license:

// 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 
//
//       https://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;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using ArcGIS.Desktop.Editing;
using ArcGIS.Desktop.Framework;
using ArcGIS.Desktop.Framework.Contracts;
using ArcGIS.Desktop.Mapping;
using ArcGIS.Core.Geometry;
using ArcGIS.Desktop.Framework.Threading.Tasks;
using System.Windows.Forms;

namespace ArcSWAT3
{
    internal class PolygonTool : MapTool { 

        public PolygonTool() {
            IsSketchTool = true;
            UseSnapping = true;
            // Select the type of construction tool you wish to implement.  
            // Make sure that the tool is correctly registered with the correct component category type in the daml 
            SketchType = SketchGeometryType.Polygon;
            SketchOutputMode = SketchOutputMode.Map;
            FireSketchEvents = true;
            ControlID = "ArcSWAT3_SelectPolygon";
        }
    }
}