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


namespace?蘭勃特墨卡托投影
{
????public?class?MyPoint
????{
????????public?double?x;
????????public?double?y;
????}

????public?struct?line//記錄直線參數(shù)的結(jié)構(gòu)
????{
????????public?double?k;
????????public?double?b;
????}
????class?Dpeucker
????{
????????List?outPoint?=?new?List（）;
????????public?void?Do（List?inPoint?double?DPictureBox?picbox??）
????????{
????????????int?n1?=?0;
????????????int?n2?=?inPoint.Count;
????????????Douglas（inPoint?n1?n2?D）;

????????????//Bitmap?memoryBuffer1?=?new?Bitmap（picbox.Width?picbox.Height）;
????????????//Graphics?g?=?Graphics.FromImage（memoryBuffer1）;
????????????Graphics?g?=?picbox.CreateGraphics（）;
????????????Pen?p?=?new?Pen（Color.Red?2f）;???????????
????????????g.ScaleTransform（0.00009f?0.00009f）;//畫面縮小
????????????g.TranslateTransform（5200000?7200000）;//平移
????????????g.RotateTransform（-90）;//旋轉(zhuǎn)??
????????????Point[]?points?=?new?Point[outPoint.Count];
????????????for?（int?i?=?0;?i?????????????{
????????????????points[i].X?=?（int）outPoint[i].x;
????????????????points[i].Y?=?（int）outPoint[i].y;
????????????}
????????????g.DrawLines（p?points）;
????????????g.Dispose（）;

????????????//picbox.Visible?=?true;
????????????//picbox.Image?=?memoryBuffer1;
????????????
????????????//List?mPoints?=?outPoint.Distinct（）.ToList（）;?;

????????}

????????///?

????????///?求直線斜率與截距
????????///?

????????///?
????????///?
????????///?
????????private?line?parameter（MyPoint?p1?MyPoint?p2）
????????{
????????????double?k?b;
????????????line?newcs?=?new?line（）;
????????????k?=?（p2.y?-?p1.y）?/?（p2.x?-?p1.x）;
????????????b?=?p1.y?-?k?*?p1.x;
????????????newcs.k?=?k;
????????????newcs.b?=?b;
????????????return?newcs;
????????}

????????///?

????????///?求點(diǎn)到直線的距離
????????///?

????????///?
????????///?
????????///?
????????private?double?distance（MyPoint?dot?line?cs）
????????{
????????????double?dis?=?（Math.Abs（cs.k?*?dot.x?-?dot.y?+?cs.b））?/?Math.Sqrt（cs.k?*?cs.k?+?1）;
????????????return?dis;
????????}

????????///?

????????///?
????????///?

????????///?
????????///?
????????///?
????????///?
????????private?void?Douglas（List?InPoints?int?n1?int?n2?double?d）
????????{
????????????int?num?=?InPoints.Count;
????????????//List?OutPoint?=?new?List（）;
????????????int?Max?=?0;//定義擁有最大距離值的點(diǎn)的編號
????????????line?MyLine?=?new?line（）;
????????????MyLine?=?parameter（InPoints

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????27648??2019-08-29?21:32??蘭勃特墨卡托投影\bin\Debug\蘭勃特墨卡托投影.exe

?????文件??????44544??2019-08-29?21:32??蘭勃特墨卡托投影\bin\Debug\蘭勃特墨卡托投影.pdb

?????文件??????21464??2019-08-07?10:20??蘭勃特墨卡托投影\bin\Debug\蘭勃特墨卡托投影.vshost.exe

?????文件???????4942??2019-08-30?18:16??蘭勃特墨卡托投影\Dpeucker.cs

?????文件??????15707??2019-08-29?21:33??蘭勃特墨卡托投影\Form1.cs

?????文件??????24922??2019-08-29?21:33??蘭勃特墨卡托投影\Form1.Designer.cs

?????文件???????8564??2019-08-29?21:33??蘭勃特墨卡托投影\Form1.resx

?????文件???????3403??2019-08-13?21:46??蘭勃特墨卡托投影\GetDataFromTxt.cs

?????文件???????3672??2019-09-22?15:43??蘭勃特墨卡托投影\MapProject.cs

?????文件???????1209??2019-09-20?15:23??蘭勃特墨卡托投影\obj\Debug\DesignTimeResolveAssemblyReferences.cache

?????文件???????7088??2019-08-19?13:02??蘭勃特墨卡托投影\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件?????????42??2019-08-19?13:02??蘭勃特墨卡托投影\obj\Debug\蘭勃特墨卡托投影.csproj.CoreCompileInputs.cache

?????文件???????1531??2019-08-13?23:06??蘭勃特墨卡托投影\obj\Debug\蘭勃特墨卡托投影.csproj.FileListAbsolute.txt

?????文件????????847??2019-08-29?21:32??蘭勃特墨卡托投影\obj\Debug\蘭勃特墨卡托投影.csproj.GenerateResource.cache

?????文件???????9084??2019-08-11?12:25??蘭勃特墨卡托投影\obj\Debug\蘭勃特墨卡托投影.csprojAssemblyReference.cache

?????文件??????27648??2019-08-29?21:32??蘭勃特墨卡托投影\obj\Debug\蘭勃特墨卡托投影.exe

?????文件???????1942??2019-08-29?21:32??蘭勃特墨卡托投影\obj\Debug\蘭勃特墨卡托投影.Form1.resources

?????文件??????44544??2019-08-29?21:32??蘭勃特墨卡托投影\obj\Debug\蘭勃特墨卡托投影.pdb

?????文件????????180??2019-08-19?13:04??蘭勃特墨卡托投影\obj\Debug\蘭勃特墨卡托投影.Properties.Resources.resources

?????文件???????5148??2019-08-13?21:46??蘭勃特墨卡托投影\peucker.cs

?????文件????????505??2019-07-28?08:45??蘭勃特墨卡托投影\Program.cs

?????文件???????1368??2019-07-28?08:45??蘭勃特墨卡托投影\Properties\AssemblyInfo.cs

?????文件???????2900??2019-07-28?08:45??蘭勃特墨卡托投影\Properties\Resources.Designer.cs

?????文件???????5612??2019-07-28?08:45??蘭勃特墨卡托投影\Properties\Resources.resx

?????文件???????1111??2019-07-28?08:45??蘭勃特墨卡托投影\Properties\Settings.Designer.cs

?????文件????????249??2019-07-28?08:45??蘭勃特墨卡托投影\Properties\Settings.settings

?????文件???????3877??2019-08-19?13:04??蘭勃特墨卡托投影\蘭勃特墨卡托投影.csproj

?????目錄??????????0??2019-07-28?08:45??蘭勃特墨卡托投影\obj\Debug\TempPE

?????目錄??????????0??2019-09-28?00:16??蘭勃特墨卡托投影\bin\Debug

?????目錄??????????0??2019-08-07?10:14??蘭勃特墨卡托投影\bin\Release

............此處省略9個(gè)文件信息