ArcEngine符号化——线符号

1、前言

在ArcEngine中，线要素的符号有很多种，如简单线、制图线、离散线、点线等等，下面开始介绍。

2、常用的线符号

2.1、简单线符号

2.2、离散线符号

2.3、制图线符号

2.4、点线线符号

2.5、叠加线符号

2.6、图片线符号

3、实现代码

using System;
using System.Windows.Forms;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Display;
using stdole;
using ESRI.ArcGIS.Geodatabase;

namespace Win
{
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
            axMapControl1.AddShapeFile(@"C:\Users\DSF\Desktop\data", @"polyline.shp");
        }

        /// <summary>
        /// 简单线符号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSimpleLineSymbol_Click(object sender, EventArgs e)
        {
            // 创建颜色
            IRgbColor pRgbColor = new RgbColor();
            pRgbColor.Red = 255;
            pRgbColor.Green = 0;
            pRgbColor.Blue = 0;

            // 创建符号
            ISimpleLineSymbol pSimpleLineSymbol = new SimpleLineSymbol();
            pSimpleLineSymbol.Color = pRgbColor;
            pSimpleLineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;
            pSimpleLineSymbol.Width = 2;

            // 设置符号
            IGeoFeatureLayer pGeoFeatureLayer = axMapControl1.get_Layer(0) as IGeoFeatureLayer;
            IFeatureRenderer pFeatureRenderer = pGeoFeatureLayer.Renderer;
            ISimpleRenderer pSimpleRenderer = pFeatureRenderer as ISimpleRenderer;
            pSimpleRenderer.Symbol = pSimpleLineSymbol as ISymbol;

            // 刷新地图
            axMapControl1.Refresh();
            axTOCControl1.Update();
        }

        /// <summary>
        /// 离散线符号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnHashLineSymbol_Click(object sender, EventArgs e)
        {
            // 创建颜色
            IRgbColor pRgbColor = new RgbColor();
            pRgbColor.Red = 255;
            pRgbColor.Green = 0;
            pRgbColor.Blue = 0;

            // 创建符号
            IHashLineSymbol pHashLineSymbol = new HashLineSymbol();
            pHashLineSymbol.Angle = 0;
            pHashLineSymbol.Color = pRgbColor;
            pHashLineSymbol.Width = 5;

            // 
            double[] nums = new double[6];
            nums[0] = 0;
            nums[1] = 1;
            nums[2] = 2;
            nums[3] = 3;
            nums[4] = 4;
            nums[5] = 5;

            //
            ITemplate pTemplate = new Template();
            pTemplate.Interval = 1;
            for (int i = 0; i < nums.Length; i += 2)
            {
                pTemplate.AddPatternElement(nums[i], nums[i + 1]);
            }

            // 设置符号属性
            ILineProperties pLineProperties = pHashLineSymbol as ILineProperties;
            pLineProperties.Offset = 0;
            pLineProperties.Template = pTemplate;

            // 设置符号
            IGeoFeatureLayer pGeoFeatureLayer = axMapControl1.get_Layer(0) as IGeoFeatureLayer;
            IFeatureRenderer pFeatureRenderer = pGeoFeatureLayer.Renderer;
            ISimpleRenderer pSimpleRenderer = pFeatureRenderer as ISimpleRenderer;
            pSimpleRenderer.Symbol = pHashLineSymbol as ISymbol;

            // 刷新地图
            axMapControl1.Refresh();
            axTOCControl1.Update();
        }

        /// <summary>
        /// 制图线符号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnCartographicLineSymbol_Click(object sender, EventArgs e)
        {
            // 创建颜色
            IRgbColor pRgbColor = new RgbColor();
            pRgbColor.Red = 255;
            pRgbColor.Green = 0;
            pRgbColor.Blue = 0;

            // 创建符号
            ICartographicLineSymbol pCartographicLineSymbol = new CartographicLineSymbol();
            pCartographicLineSymbol.Color = pRgbColor;
            pCartographicLineSymbol.Join = esriLineJoinStyle.esriLJSRound;
            pCartographicLineSymbol.MiterLimit = 10;
            pCartographicLineSymbol.Width = 5;

            // 
            double[] nums = new double[6];
            nums[0] = 0;
            nums[1] = 1;
            nums[2] = 2;
            nums[3] = 3;
            nums[4] = 4;
            nums[5] = 5;

            // 创建模板
            ITemplate pTemplate = new Template();
            pTemplate.Interval = 1;
            for (int i = 0; i < nums.Length; i += 2)
            {
                pTemplate.AddPatternElement(nums[i], nums[i + 1]);
            }

            // 设置符号属性
            ILineProperties pLineProperties = pCartographicLineSymbol as ILineProperties;
            pLineProperties.Offset = 0;
            pLineProperties.Template = pTemplate;

            // 设置符号
            IGeoFeatureLayer pGeoFeatureLayer = axMapControl1.get_Layer(0) as IGeoFeatureLayer;
            IFeatureRenderer pFeatureRenderer = pGeoFeatureLayer.Renderer;
            ISimpleRenderer pSimpleRenderer = pFeatureRenderer as ISimpleRenderer;
            pSimpleRenderer.Symbol = pCartographicLineSymbol as ISymbol;

            // 刷新地图
            axMapControl1.Refresh();
            axTOCControl1.Update();
        }

        /// <summary>
        /// 点线符号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnMarkerLineSymbol_Click(object sender, EventArgs e)
        {
            // 创建点颜色
            IRgbColor pRgbColor = new RgbColor();
            pRgbColor.Red = 0;
            pRgbColor.Green = 255;
            pRgbColor.Blue = 0;

            // 创建点符号
            ISimpleMarkerSymbol pSimpleMarkerSymbol = new SimpleMarkerSymbol();
            pSimpleMarkerSymbol.Angle = 0;
            pSimpleMarkerSymbol.Color = pRgbColor;
            pSimpleMarkerSymbol.Size = 2;
            pSimpleMarkerSymbol.Style = esriSimpleMarkerStyle.esriSMSX;

            // 创建线符号
            IMarkerLineSymbol pMarkerLineSymbol = new MarkerLineSymbol();
            pMarkerLineSymbol.MarkerSymbol = pSimpleMarkerSymbol;
            pMarkerLineSymbol.Width = 10;

            // 设置符号
            IGeoFeatureLayer pGeoFeatureLayer = axMapControl1.get_Layer(0) as IGeoFeatureLayer;
            IFeatureRenderer pFeatureRenderer = pGeoFeatureLayer.Renderer;
            ISimpleRenderer pSimpleRenderer = pFeatureRenderer as ISimpleRenderer;
            pSimpleRenderer.Symbol = pMarkerLineSymbol as ISymbol;

            // 刷新地图
            axMapControl1.Refresh();
            axTOCControl1.Update();
        }

        /// <summary>
        /// 叠加线符号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnMultiLayerLineSymbol_Click(object sender, EventArgs e)
        {
            // 创建简单线颜色
            IRgbColor pSimpleLineRgbColor = new RgbColor();
            pSimpleLineRgbColor.Red = 255;
            pSimpleLineRgbColor.Green = 0;
            pSimpleLineRgbColor.Blue = 0;

            // 创建简单线符号
            ISimpleLineSymbol pSimpleLineSymbol = new SimpleLineSymbol();
            pSimpleLineSymbol.Color = pSimpleLineRgbColor;
            pSimpleLineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;
            pSimpleLineSymbol.Width = 2;

            // 创建制图线颜色
            IRgbColor pCartographicLineRgbColor = new RgbColor();
            pCartographicLineRgbColor.Red = 0;
            pCartographicLineRgbColor.Green = 255;
            pCartographicLineRgbColor.Blue = 0;

            // 创建制图线符号
            ICartographicLineSymbol pCartographicLineSymbol = new CartographicLineSymbol();
            pCartographicLineSymbol.Color = pCartographicLineRgbColor;
            pCartographicLineSymbol.Join = esriLineJoinStyle.esriLJSRound;
            pCartographicLineSymbol.MiterLimit = 10;
            pCartographicLineSymbol.Width = 5;

            // 
            double[] nums = new double[6];
            nums[0] = 0;
            nums[1] = 1;
            nums[2] = 2;
            nums[3] = 3;
            nums[4] = 4;
            nums[5] = 5;

            // 创建模板
            ITemplate pTemplate = new Template();
            pTemplate.Interval = 1;
            for (int i = 0; i < nums.Length; i += 2)
            {
                pTemplate.AddPatternElement(nums[i], nums[i + 1]);
            }

            // 设置符号属性
            ILineProperties pLineProperties = pCartographicLineSymbol as ILineProperties;
            pLineProperties.Offset = 0;
            pLineProperties.Template = pTemplate;

            // 创建叠加线符号
            IMultiLayerLineSymbol pMultiLayerLineSymbol = new MultiLayerLineSymbol();
            pMultiLayerLineSymbol.AddLayer(pSimpleLineSymbol);
            pMultiLayerLineSymbol.AddLayer(pCartographicLineSymbol);

            // 设置符号
            IGeoFeatureLayer pGeoFeatureLayer = axMapControl1.get_Layer(0) as IGeoFeatureLayer;
            IFeatureRenderer pFeatureRenderer = pGeoFeatureLayer.Renderer;
            ISimpleRenderer pSimpleRenderer = pFeatureRenderer as ISimpleRenderer;
            pSimpleRenderer.Symbol = pMultiLayerLineSymbol as ISymbol;

            // 刷新地图
            axMapControl1.Refresh();
            axTOCControl1.Update();
        }

        /// <summary>
        /// 图片线符号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnPictureLineSymbol_Click(object sender, EventArgs e)
        {
            IPictureLineSymbol pPictureLineSymbol = new PictureLineSymbol();
            pPictureLineSymbol.CreateLineSymbolFromFile(esriIPictureType.esriIPicturePNG, @"C:\Users\DSF\Desktop\Driving_Directions16.png");
            pPictureLineSymbol.Offset = 0;
            pPictureLineSymbol.Width = 20;

            // 设置符号
            IGeoFeatureLayer pGeoFeatureLayer = axMapControl1.get_Layer(0) as IGeoFeatureLayer;
            IFeatureRenderer pFeatureRenderer = pGeoFeatureLayer.Renderer;
            ISimpleRenderer pSimpleRenderer = pFeatureRenderer as ISimpleRenderer;
            pSimpleRenderer.Symbol = pPictureLineSymbol as ISymbol;

            // 刷新地图
            axMapControl1.Refresh();
            axTOCControl1.Update();
        }
    }
}