using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Text;
using?System.Windows.Forms;

namespace?GIS
{
????public?partial?class?Form1?:?Form
????{
????????private?Boolean?_calculateDouglasPeuckerReduction?=?false;
????????private?List?_amerenPoints?=?new?List（）;

????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????protected?override?void?OnPaint（PaintEventArgs?e）
????????{
????????????List?drawingPoints?=?new?List（）;
????????????foreach?（GIS.Point?point?in?_amerenPoints）
????????????{
????????????????drawingPoints.Add（new?System.Drawing.Point（Convert.ToInt32（point.X）?Convert.ToInt32（point.Y）））;
????????????}
????????????if?（drawingPoints.Count?>?2）
????????????{
????????????????e.Graphics.DrawLines（new?Pen（Brushes.Black?2）?drawingPoints.ToArray（））;
????????????????lblOriginal.Text?=?drawingPoints.Count.ToString（）;

????????????????if?（_calculateDouglasPeuckerReduction）
????????????????{
????????????????????List?points?=?Utility.DouglasPeuckerReduction（_amerenPoints?Convert.ToDouble（nudTolerance.Value））;

????????????????????drawingPoints?=?new?List（）;
????????????????????foreach?（GIS.Point?point?in?points）
????????????????????{
????????????????????????drawingPoints.Add（new?System.Drawing.Point（Convert.ToInt32（point.X）?Convert.ToInt32（point.Y）））;
????????????????????}

????????????????????e.Graphics.DrawLines（new?Pen（Brushes.Red?2）?drawingPoints.ToArray（））;
????????????????????lblSimplified.Text?=?drawingPoints.Count.ToString（）;
????????????????}
????????????}

????????????base.OnPaint（e）;

????????}

????????private?void?Form1_MouseMove（object?sender?MouseEventArgs?e）
????????{
????????????if?（e.Button?==?MouseButtons.Left）
????????????{
????????????????_amerenPoints.Add（new?GIS.Point（e.X?e.Y））;
????????????????this.Invalidate（）;
????????????}
????????}

????????private?void?Form1_MouseUp（object?sender?MouseEventArgs?e）
????????{
????????????//DO?the?calculation
????????????_calculateDouglasPeuckerReduction?=?true;
????????????this.Invalidate（）;
????????}

????????private?void?Form1_MouseDown（object?sender?MouseEventArgs?e）
????????{
????????????if?（e.Button?==?MouseButtons.Left）
????????????{
????????????????_amerenPoints.Clear（）;
????????????????_calculateDouglasPeuckerReduction?=?false;
????????????}
????????}

????????private?void?nudTolerance_ValueChanged（object?sender?EventArgs?e）
????????{
????????????this.Invalidate（）;
????????}
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2007-06-06?13:25??GIS\bin\
?????目錄???????????0??2007-06-06?13:35??GIS\bin\Debug\
?????文件???????24576??2007-05-25?07:06??GIS\bin\Debug\GIS.exe
?????文件????????5632??2005-09-23?07:56??GIS\bin\Debug\GIS.vshost.exe
?????文件????????2692??2007-05-25?07:10??GIS\Form1.cs
?????文件????????5381??2007-05-25?07:06??GIS\Form1.Designer.cs
?????文件????????5814??2007-05-25?07:06??GIS\Form1.resx
?????文件????????3324??2007-05-25?07:03??GIS\GIS.csproj
?????文件?????????894??2007-05-25?07:10??GIS\GIS.sln
?????文件???????13824??2007-05-25?07:10??GIS\GIS.suo
?????文件????????2060??2007-05-25?07:03??GIS\Point.cs
?????文件?????????470??2007-05-25?06:59??GIS\Program.cs
?????目錄???????????0??2007-06-06?13:35??GIS\Properties\
?????文件????????1266??2007-05-25?06:59??GIS\Properties\AssemblyInfo.cs
?????文件????????2831??2007-05-25?07:03??GIS\Properties\Resources.Designer.cs
?????文件????????5612??2007-05-25?06:59??GIS\Properties\Resources.resx
?????文件????????1082??2007-05-25?07:03??GIS\Properties\Settings.Designer.cs
?????文件?????????249??2007-05-25?06:59??GIS\Properties\Settings.settings
?????文件????????9932??2007-06-06?13:35??GIS\Utility.cs
?????目錄???????????0??2007-06-06?13:35??GIS\