NDBGJK5.0/Kingo.PluginServiceInterface/Helper/LayerHelper.cs

using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using stdole;
using System.Collections.Generic;

namespace Kingo.PluginServiceInterface.Helper
{
    public class LayerHelper
    {
        public static Dictionary<string, List<IFeature>> GetSelectedFeaturesDic(IMap map, esriGeometryType geoType = esriGeometryType.esriGeometryAny)
        {
            if (map == null)
            {
                return null;
            }
            IEnumFeature enumFeature = map.FeatureSelection as IEnumFeature;
            if (enumFeature == null)
            {
                return null;
            }
            Dictionary<string, List<IFeature>> geoList = new Dictionary<string, List<IFeature>>();
            IFeature feart = enumFeature.Next();
            while (feart != null)
            {
                if (feart.Shape != null && !feart.Shape.IsEmpty && (geoType == esriGeometryType.esriGeometryAny || feart.Shape.GeometryType == geoType))
                {
                    IDataset dataset = feart.Table as IDataset;
                    if (dataset != null)
                    {
                        if (geoList.ContainsKey(dataset.BrowseName))
                        {
                            geoList[dataset.BrowseName].Add(feart);
                        }
                        else
                        {
                            geoList.Add(dataset.BrowseName, new List<IFeature>() { feart });
                        }
                    }
                }
                feart = enumFeature.Next();
            }
            return geoList;
        }
        /// <summary>
        /// 创建点元素
        /// </summary>
        /// <param name="pGeometry">点几何图形</param>
        /// <returns>返回点元素</returns>
        public static IElement PointElement(IGeometry pGeometry)
        {
            IElement pElement = new MarkerElementClass();
            IMarkerElement pMarkerElement = (IMarkerElement)pElement;
            ISimpleMarkerSymbol pSimpleMarkerSymbol = new SimpleMarkerSymbolClass();
            pSimpleMarkerSymbol.Style = esriSimpleMarkerStyle.esriSMSCircle;
            IRgbColor pRgbColor = new RgbColorClass();
            pRgbColor.Red = 255;
            pSimpleMarkerSymbol.Color = pRgbColor;
            pSimpleMarkerSymbol.Size = 10;
            pMarkerElement.Symbol = pSimpleMarkerSymbol;
            pElement.Geometry = pGeometry;
            return pElement;
        }
        /// <summary>
        /// 创建线元素
        /// </summary>
        /// <param name="pGeometry">线几何图形</param>
        /// <returns>线元素</returns>
        public static IElement PolylineElement(IGeometry pGeometry)
        {
            IElement pElement = new LineElementClass();
            ILineElement pLineElement = (ILineElement)pElement;
            ISimpleLineSymbol pSimpleLineSymbol = new SimpleLineSymbolClass();
            IRgbColor pRgbColor = new RgbColorClass();
            pRgbColor.Red = 0;
            pRgbColor.Green = 0;
            pRgbColor.Blue = 0;
            pSimpleLineSymbol.Color = pRgbColor;
            pSimpleLineSymbol.Width = 5;
            pLineElement.Symbol = pSimpleLineSymbol;
            pElement.Geometry = pGeometry;
            return pElement;
        }
        /// <summary>
        /// 创建面元素
        /// </summary>
        /// <param name="pGeometry">面几何对象</param>
        /// <returns>面元素</returns>
        public static IElement PolygonElement(IGeometry pGeometry)
        {
            IElement pElement = new PolygonElementClass();
            //填充符号设置
            ISimpleFillSymbol pSimpleFillSymbol = new SimpleFillSymbolClass();
            //填充符号的边框设置
            ILineSymbol pLineSymbol = new SimpleLineSymbolClass();
            IRgbColor pRgbColol = new RgbColorClass();
            pRgbColol.Red = 0;
            pRgbColol.Green = 0;
            pRgbColol.Blue = 110;
            pLineSymbol.Color = pRgbColol;
            pLineSymbol.Width = 1;
            pSimpleFillSymbol.Outline = pLineSymbol;
            //填充符号颜色
            pRgbColol = new RgbColorClass();
            pRgbColol.Red = 229;
            pRgbColol.Green = 103;
            pRgbColol.Blue = 102;
            pSimpleFillSymbol.Color = pRgbColol;
            pSimpleFillSymbol.Style = esriSimpleFillStyle.esriSFSCross; //.esriSFSBackwardDiagonal;
            //面元素设置
            IFillShapeElement pFillShapeElement = (IFillShapeElement)pElement;
            pFillShapeElement.Symbol = pSimpleFillSymbol;
            pElement.Geometry = pGeometry;
            return pElement;
        }

        public static IElement TextElement(IGeometry pGeometry, string textLabel)
        {
            IRgbColor pColor = new RgbColorClass()
            {
                Red = 0,
                Blue = 255,
                Green = 0
            };
            IFontDisp pFont = new StdFont()
            {
                Name = "宋体",
                Size = 12
            } as IFontDisp;

            ITextSymbol pTextSymbol = new TextSymbolClass()
            {
                Color = pColor,
                Font = pFont,
                Size = 12
            };
            IGeometry geometry = pGeometry;
            switch (geometry.GeometryType)
            {
                case esriGeometryType.esriGeometryPolygon:
                    geometry = (pGeometry as IArea).Centroid;
                    break;
            }
            IElement pTextElment = new TextElementClass()
            {
                Symbol = pTextSymbol,
                ScaleText = true,
                Text = textLabel,
                Geometry = geometry
            };
            return pTextElment;
        }
    }
}