using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Text;
using?System.Windows.Forms;
using?ESRI.ArcGIS.Carto;
using?ESRI.ArcGIS.Display;
using?ESRI.ArcGIS.Geometry;
using?ESRI.ArcGIS.Geodatabase;

namespace?drawtest
{
????public?partial?class?Form1?:?Form
????{
???????public?struct?Vertex
???????{
???????????public?double?x;
???????????public?double?y;
???????????public?int?ID;
???????}

????????public?struct?Triangle
????????{
????????????public?int?V1Index;
????????????public?int?V2Index;
????????????public?int?V3Index;
????????}

????????public?static?int?maxVertex?=?300;
????????public?static?int?maxTiangle?=?500;
????????Vertex[]?Vertices?=?new?Vertex[maxVertex];
????????Triangle[]?TinTriangles?=?new?Triangle[maxTiangle];
????????public?int[]?edges?=?new?int[2?maxTiangle?*?3];

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

????????private?bool?InCircle（float?xp?float?yp?float?x1?float?y1?float?x2?float?y2?float?x3?float?y3?double?xc?double?yc?double?r）
????????{
????????????double?eps?m1?m2?mx1?mx2?my1?my2?dx?dy?rsqr?drsqr;
????????????eps?=?0.00000001;
????????????if?（Math.Abs（y1?-?y2）?????????????{
????????????????MessageBox.Show（“INCIRCUM?-?F?-?Points?are?coincident?!!“）;
????????????????return?false;
????????????}
????????????if?（Math.Abs（y2?-?y1）?????????????{
????????????????m2?=?（-（Convert.ToDouble（x3）?-?Convert.ToDouble（x2））?/?（Convert.ToDouble（y3）?-?Convert.ToDouble（y2）））;
????????????????mx2?=?Convert.ToDouble（（x2?+?x3）?/?2.0）;
????????????????my2?=?Convert.ToDouble（（y2?+?y3）?/?2.0）;
????????????????xc?=?Convert.ToDouble（（x2?+?x1）?/?2.0）;
????????????????yc?=?Convert.ToDouble（m2?*?（xc?-?mx2）?+?my2）;
????????????}
????????????else?if?（Math.Abs（y3?-?y2）?????????????{
????????????????m1?=?（-（Convert.ToDouble（x2）?-?Convert.ToDouble（x1））?/?（Convert.ToDouble（y2）?-?Convert.ToDouble（y1）））;
????????????????mx1?=?Convert.ToDouble（（x1?+?x2）?/?2.0）;
????????????????my1?=?Convert.ToDouble（（y1?+?y2）?/?2.0）;
????????????????xc?=?Convert.ToDouble（（x3?+?x2）?/?2.0）;
????????????????yc?=?Convert.ToDouble（m1?*?（xc?-?mx1）?+?my1）;
????????????}
????????????else
????????????{
????????????????m1?=?（-（Convert.ToDouble（x2）?-?Convert.ToDouble（x1））?/?（Convert.ToDouble（y2）?-?Convert.ToDouble（y1）））;
????????????????m2?=?（-（Convert.ToDouble（x3）?-?Convert.ToDouble（x2））?/?（Convert.ToDouble（y3）?-?Convert.ToDouble（y2）））;
????????????????mx1?=?Convert.ToDouble（（x1?+?x2）?/?2.0）;
????????????????mx2?=?Convert.ToDouble（（x2?+?x3）?/?2.0）;
????????????????my1?=?Convert.ToDouble（（y1?+?y2）?/?2.0）;
????????????????my2?=?Convert.ToDouble（（y2?+?y3）?/?2.0）;
????????????????xc?=?Convert.ToDouble（（m1?*?mx1?-?m2?*?mx2?+?my2?-?my1）?/?（m1?-?m2））;
????????????????yc?=?Convert.ToDouble（m1?*?（xc?-?mx1）?+?my1）;
????????????}
???????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????28672??2010-04-20?22:04??drawtest\drawtest\bin\Debug\drawtest.exe

?????文件??????36352??2010-04-20?22:04??drawtest\drawtest\bin\Debug\drawtest.pdb

?????文件???????5632??2005-11-11?22:25??drawtest\drawtest\bin\Debug\drawtest.vshost.exe

?????文件???????4676??2010-04-19?14:32??drawtest\drawtest\drawtest.csproj

?????文件??????14012??2010-04-20?22:17??drawtest\drawtest\Form1.cs

?????文件???????4787??2010-04-20?16:20??drawtest\drawtest\Form1.Designer.cs

?????文件??????10096??2010-04-20?16:20??drawtest\drawtest\Form1.resx

?????文件????????842??2010-04-20?16:20??drawtest\drawtest\obj\Debug\drawtest.csproj.GenerateResource.Cache

?????文件??????28672??2010-04-20?22:04??drawtest\drawtest\obj\Debug\drawtest.exe

?????文件???????3064??2010-04-20?16:20??drawtest\drawtest\obj\Debug\drawtest.Form1.resources

?????文件??????36352??2010-04-20?22:04??drawtest\drawtest\obj\Debug\drawtest.pdb

?????文件????????180??2010-04-19?14:32??drawtest\drawtest\obj\Debug\drawtest.Properties.Resources.resources

?????文件?????112408??2010-04-19?14:32??drawtest\drawtest\obj\Debug\ResolveAssemblyReference.cache

?????文件???????4608??2010-04-20?20:24??drawtest\drawtest\obj\Debug\TempPE\Properties.Resources.Designer.cs.dll

?????文件???????2062??2010-04-20?22:10??drawtest\drawtest\obj\drawtest.csproj.FileListAbsolute.txt

?????文件????????467??2010-04-19?13:42??drawtest\drawtest\Program.cs

?????文件???????1188??2010-04-19?13:42??drawtest\drawtest\Properties\AssemblyInfo.cs

?????文件???????2840??2010-04-20?20:24??drawtest\drawtest\Properties\Resources.Designer.cs

?????文件???????5612??2010-04-19?13:42??drawtest\drawtest\Properties\Resources.resx

?????文件???????1106??2010-04-20?20:24??drawtest\drawtest\Properties\Settings.Designer.cs

?????文件????????249??2010-04-19?13:42??drawtest\drawtest\Properties\Settings.settings

?????文件????????913??2010-04-19?13:42??drawtest\drawtest.sln

????..A..H.?????36352??2010-04-20?22:17??drawtest\drawtest.suo

?????目錄??????????0??2010-04-20?21:26??drawtest\drawtest\obj\Debug\TempPE

?????目錄??????????0??2010-04-20?21:26??drawtest\drawtest\bin\Debug

?????目錄??????????0??2010-04-20?22:04??drawtest\drawtest\obj\Debug

?????目錄??????????0??2010-04-20?21:26??drawtest\drawtest\bin

?????目錄??????????0??2010-04-20?21:26??drawtest\drawtest\obj

?????目錄??????????0??2010-04-20?21:26??drawtest\drawtest\Properties

?????目錄??????????0??2010-04-20?22:17??drawtest\drawtest

............此處省略4個文件信息