extent.cs

arcims加点的测试程序

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using AjaxPro;


#region 用于地图范围变换
/// <summary>
/// 用于地图范围变换（测试标记A098271635245153）
/// </summary>
public class Extent
{
    #region
    public Extent()
	{
		//
		// TODO: 在此处添加构造函数逻辑
		//
    }
    #endregion

    //=============================

    #region 放大到点
    /// <summary>
    /// 放大到点
    /// </summary>
    /// <param name="mapctrl">地图控件</param>
    /// <param name="ea">参数序列</param>
    /// <returns></returns>
    public string  ZoomToPointServer(ESRI.ArcGIS.ADF.Web.UI.WebControls.Map mapctrl, string ea)
    {
        char[] parser_char = { ',' };
        string[] messages = ea.Split(parser_char);
        double x_center = Double.Parse(messages[1]);
        double y_center = Double.Parse(messages[2]);
        int step = int.Parse(messages[3]);

        double map_width_eight = mapctrl.Extent.Width / step;

        ESRI.ArcGIS.ADF.Web.Geometry.Envelope env = new ESRI.ArcGIS.ADF.Web.Geometry.Envelope(x_center - map_width_eight, y_center - map_width_eight, x_center + map_width_eight, y_center + map_width_eight);
        mapctrl.Extent = env;

        return mapctrl.CallbackResults.ToString();

    }
    #endregion

    #region 放大到点
    /// <summary>
    /// 放大到点
    /// </summary>
    /// <param name="mapctrl">地图控件</param>
    /// <param name="ea">参数序列</param>
    /// <returns></returns>
    public string ZoomToPointScaleServer(ESRI.ArcGIS.ADF.Web.UI.WebControls.Map mapctrl, string ea)
    {
        char[] parser_char = { ',' };
        string[] messages = ea.Split(parser_char);
        double x_center = Double.Parse(messages[1]);
        double y_center = Double.Parse(messages[2]);
        double Scale = Double.Parse(messages[3]);

        double map_width_eight = Scale;

        ESRI.ArcGIS.ADF.Web.Geometry.Envelope env = new ESRI.ArcGIS.ADF.Web.Geometry.Envelope(x_center - map_width_eight, y_center - map_width_eight, x_center + map_width_eight, y_center + map_width_eight);
        mapctrl.Extent = env;

        return mapctrl.CallbackResults.ToString();

    }
    #endregion

    #region 放大到面
    /// <summary>
    /// 放大到面
    /// </summary>
    /// <param name="mapctrl">地图控件</param>
    /// <param name="ea">参数序列</param>
    /// <returns></returns>
    public string ZoomToExtentServer(ESRI.ArcGIS.ADF.Web.UI.WebControls.Map mapctrl, string ea)
    {
        //forceComma(L)+"|"+forceComma(B)+"|"+forceComma(R)+"|"+forceComma(T);//记录四角坐标
        char[] parser_char = { ',' };
        string[] messages = ea.Split(parser_char);
        double Minx = Double.Parse(messages[1]);
        double Miny = Double.Parse(messages[2]);
        double Maxx = Double.Parse(messages[3]);
        double Maxy = Double.Parse(messages[4]);
        
        ESRI.ArcGIS.ADF.Web.Geometry.Envelope env = new ESRI.ArcGIS.ADF.Web.Geometry.Envelope();
        env.XMin = Minx;
        env.YMin = Miny;
        env.XMax = Maxx;
        env.YMax = Maxy;
        mapctrl.Extent = env;

        return mapctrl.CallbackResults.ToString();
    }
    #endregion

    //=============================
}
#endregion