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

namespace?ChapterFour
{
????public?partial?class?ChapterFour?:?Form
????{
????????private?int?pointNum;
????????private?List?points;
????????private?Point?[]pointp;

????????public?ChapterFour（）
????????{
????????????pointNum?=?0;
????????????points?=?new?List（）;
????????????InitializeComponent（）;
????????????this.polygonButton.Enabled?=?false;
????????????this.drawButton.Enabled?=?false;
????????????this.cleanButton.Enabled?=?false;
????????}

????????public?void?Bezier（List?p?int?n）?//生成Bezier曲線
????????{
????????????Point?CurrentP;
????????????int?x?y?i?j?k?=?512;
????????????double?t?t1?u?v;
????????????double?temp?temp1?temp2?bi;
????????????Graphics?myGraphics?=?this.drawingLabel.CreateGraphics（）;
????????????Pen?myPen?=?new?Pen（Color.Blue?1）;

????????????CurrentP?=?p.ElementAt（0）;
????????????t?=?1.0?/?k;
????????????for?（j?=?1;?j?????????????{
????????????????t1?=?j?*?t;
????????????????u?=?t1;
????????????????v?=?1?-?u;
????????????????x?=?0;
????????????????y?=?0;
????????????????for?（i?=?0;?i?<=?n;?i++）
????????????????{
????????????????????temp?=?（double）fac（n）?/?fac（i）?/?fac（n?-?i）;
????????????????????temp1?=?powi（u?i）;
????????????????????temp2?=?powi（v?n?-?i）;
????????????????????bi?=?temp?*?temp1?*?temp2;
????????????????????x?=?（int）（（double）x?+?bi?*?（double）p.ElementAt（i）.X）;
????????????????????y?=?（int）（（double）y?+?bi?*?（double）p.ElementAt（i）.Y）;
????????????????}
????????????????myGraphics.DrawLine（myPen?CurrentP.X?CurrentP.Y?x?y）;
????????????????CurrentP?=?new?Point（x?y）;
????????????}
????????????myGraphics.DrawLine（myPen?CurrentP.X?CurrentP.Y?p.ElementAt（n）.X?p.ElementAt（n）.Y）;
????????}

????????private?void?drawingLabel_Click（object?sender?EventArgs?e）
????????{
????????????Point?CurrentPoint;
????????????Graphics?myGraphics?=?this.drawingLabel.CreateGraphics（）;
????????????Pen?myPen?=?new?Pen（Color.Red?1）;

????????????this.polygonButton.Enabled?=?true;

????????????if（pointNum?==?0）
????????????????myGraphics.DrawString（“當(dāng)前狀態(tài)：確定特征多邊形頂點，按“生成特征多邊形”鍵，生成特征多邊形“?new?Font（“黑體“?10?Fontstyle.Bold）?new?SolidBrush（Color.Black）?0?20）;

????????????CurrentPoint?=?PointToClient（Control.MousePosition）;
????????????points.Add（CurrentPoint）;
????????????pointNum?+=?1;
????????????myGraphics.DrawLine（myPen?CurrentPoint.X?-?2?CurrentPoint.Y?-?2?CurrentPoint.X?+?2?CurrentPoint.Y?+?2）;
????????????myGraphics.DrawLine（myPen?CurrentPoint.X?-?2?CurrentPoint.Y?+?2?CurrentPoint.X?+?2?CurrentPoint.Y?-?2）;
????????????
????????}

????????private?void?polygonButton_Click（object?sender?EventArgs?e）
????????{
????????????String?strPointNum?strBezierFac;
????????????Graphics?myGraphics?=?this.drawingLabel.CreateGra

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-10-19?19:05??ChapterFour\
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\
?????文件?????????927??2011-10-15?11:31??ChapterFour\ChapterFour.sln
?????文件???????15360??2011-10-19?19:06??ChapterFour\ChapterFour.suo
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\bin\
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\bin\Debug\
?????文件???????13312??2011-10-15?14:19??ChapterFour\ChapterFour\bin\Debug\ChapterFour.exe
?????文件???????28160??2011-10-15?14:19??ChapterFour\ChapterFour\bin\Debug\ChapterFour.pdb
?????文件???????14328??2011-10-19?19:06??ChapterFour\ChapterFour\bin\Debug\ChapterFour.vshost.exe
?????文件?????????490??2007-07-21?02:33??ChapterFour\ChapterFour\bin\Debug\ChapterFour.vshost.exe.manifest
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\bin\Release\
?????文件????????6226??2011-10-15?14:19??ChapterFour\ChapterFour\ChapterFour.cs
?????文件????????3763??2011-10-15?11:36??ChapterFour\ChapterFour\ChapterFour.csproj
?????文件??????????74??2011-10-15?11:31??ChapterFour\ChapterFour\ChapterFour.csproj.user
?????文件????????7550??2011-10-15?13:56??ChapterFour\ChapterFour\ChapterFour.Designer.cs
?????文件????????5814??2011-10-15?13:56??ChapterFour\ChapterFour\ChapterFour.resx
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\obj\
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\obj\Debug\
?????文件?????????180??2011-10-15?13:56??ChapterFour\ChapterFour\obj\Debug\ChapterFour.ChapterFour.resources
?????文件?????????670??2011-10-19?19:06??ChapterFour\ChapterFour\obj\Debug\ChapterFour.csproj.FileListAbsolute.txt
?????文件?????????853??2011-10-15?13:56??ChapterFour\ChapterFour\obj\Debug\ChapterFour.csproj.GenerateResource.Cache
?????文件???????13312??2011-10-15?14:19??ChapterFour\ChapterFour\obj\Debug\ChapterFour.exe
?????文件???????28160??2011-10-15?14:19??ChapterFour\ChapterFour\obj\Debug\ChapterFour.pdb
?????文件?????????180??2011-10-15?11:36??ChapterFour\ChapterFour\obj\Debug\ChapterFour.Properties.Resources.resources
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\obj\Debug\Refactor\
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\obj\Debug\TempPE\
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\obj\Release\
?????文件?????????498??2011-10-15?11:31??ChapterFour\ChapterFour\Program.cs
?????目錄???????????0??2011-10-19?19:05??ChapterFour\ChapterFour\Properties\
?????文件????????1378??2011-10-15?11:30??ChapterFour\ChapterFour\Properties\AssemblyInfo.cs
?????文件????????2873??2011-10-15?11:30??ChapterFour\ChapterFour\Properties\Resources.Designer.cs
............此處省略3個文件信息