C#读取DXF文件

1、using System;using System.Collections.Generic;using System.ComponentModel;usingSystem.Data;using System.Drawing;usingSystem.Text;usingSystem.Windows.Forms;usingSystem.IO;using System.Collections;namespacd)XFpublic partial classForml : Form精选范本privateFileStreamfs;privateStreamReadesr;privateArrayList

2、 LayerList = new Array List();privateArrayList LineList = new ArrayList();privateArrayList ArcList= new Array Li st();privateArrayList EllipseList = new ArrayList();privateArrayList LwopolylineList = new ArrayList();privateArrayList SplineList=new Array List();privatestring str = new string2;private

3、int count;privatedouble leftx;privatedouble lefty;privatedouble rightx;精选范本privatedouble righty;public Form 1()(lnitializeComponent();)privatestring ReadPair()(string code = sr.ReadLine().Trim();string codedata = sr.ReadLine().Trim();count += 2;string result = new string2 code, codedata;return resul

4、t;privatevoid Read()(while (sr.Peek() != -1)(str = ReadPair();if (str1 = SECTION)(str = ReadPair();switch (str1)(casdHEADER : ReadHeader();breaKcasdTABLES: ReadTable();breaKcasdENTITIES : ReadEntities();breaK)sr.Close();fs.Close();btDraw. Enabled =true;label 1.Text = count.ToString();count = 0;priva

5、tevoid ReadTableQ while (str1 != ENDSEC)(while (strO != 2 | str1 != LAYER)(str = ReadPair();)while (strO != 0 | str1 != LAYER)(str = ReadPair();)while (strO = 0 & str1 = LAYER)ReadLAYERQ;)while(str1 != ENDSEC)(str = ReadPair();)privatevoid ReadLAYER()(LAYER newlayer = new LAYER ();while (str1 != END

6、TAB)str = ReadPair();switch (strO)(case2: = str1;breaKcase62: newlayer.colornum = str1;breaKcase6: newlayer.lstyle = str1;breaKcase370: newlayer.lwidth = str1;breaK)if (strO = 0 & str1 = LAYER)LayerList.Add(newlayer);return;)LayerList.Add(newlayer);)privatevoid ReadEntities()(while (st

7、r1 != ENDSEC)caseLINE : ReadLine();breaKcaseARC: ReadArc();breaKcaseCIRCLE: ReadArc();breaKcaseELLIPSE: ReadEllipse();breaKcaseLWPOLYLINE : ReadLwpolyline();breaKcaseSPLINE: ReadSpline();breaKdefault str = ReadPair();breaK)privatevoid ReadArc()(ARC newarc =newARC();while (str1 != ENDSEC)(str = ReadP

8、air();switch (strO)case8: newarc.LName = str1;breaKcase 10: newarc.CenterX =Double. Parse(str1 );breaKcase20: newarc.CenterY =Double.Parse(str1);breaKcase40: newarc.Radiu =Double.Parse(str1);breaKcase50: newarc.SAngle =Double.Parse(str1);breaKcase51: newarc.EAngle =Double.Parse(str1);breaKcase370: n

9、ewarc.lwidth = str1;breaKcaseO: ArcList.Add(newarc);return;)privatevoid ReadLine()(LINE newline = new LINE ();while (str1 != ENDSEC)str = ReadPairQ;switch (strO) case8: newline.LName = str1;breaKcase 10: newline.StartX =Double.Parse(str1);breaKcase20: newline.StartY =Double.Parse(str1);breaKcase 11:

10、 newline.EndX = Double.Parse(str1);breaKcase21: newline.EndY = Double.Parse(str1 );breaKcase62: newline.colornum = str1;breaKcase370: newline.Iwidth = str1;breaKcaseO: LineList.Add(newline);return;)privatevoid ReadEllipse()(ELLIPSE newellipse =new ELLIPSE();while (str1 != ENDSEC)str = ReadPair();swi

11、tch (str0)case8: newellipse.LName = str1;break;case10: newellipse.CenterX =Double.Parse(str1);break;case20: newellipse.CenterY =Double.Parse(str1);break;case11: newellipse.DeltaX =Double.Parse(str1);break;case21: newellipse.DeltaY =Double.Parse(str1);break;case40: newellipse.Radio =Double.Parse(str1

12、);break;case41: newellipse.PSAngle =Double.Parse(str1);break;case42: newellipse.PEAngle =Double.Parse(str1);break;case370: newellipse.lwidth = str1;break;case0: EllipseList.Add(newellipse);return;精选范本privatevoid ReadLwpolylineQLWPOLYLINE newlw = newLWPOLYLINE ();while (str1 != ENDSEC)(str = ReadPair

13、();switch (strO)(case8: newlw.LName = str1;breaKcase370: newlw.Iwidth = str1;breaKcase62: newlw.colornum = str1;精选范本break;case90: newlw.PointCount =Int32.Parse(str1);break;case70: newlw.Flag =Int32.Parse(str1);break;case10: newlw.pointx = new doublenewlw.PointCount;newlw.pointy = new doublenewlw.Poi

14、ntCount;/if (newlw.Flag = 1)newlw.converxity =new doublenewlw.PointCount;/else/newlw.converxity = new doublenewlw.PointCount - 1;newlw.pointx0 = Double.Parse(str1);str=ReadPair();精选范本newlw.pointy0 = Double.Parse(str1);for (int i = 1; i newlw.PointCount; i+)string temp = sr.ReadLine().Trim();if (temp

15、 = 42)newlw.converxityi - 1 =Double.Parse(sr.ReadLine().Trim();i-;elseif (temp = 20)string r = sr.ReadLine().Trim();newlw.pointyi = Double.Parse(r);elsestring r = sr.ReadLine().Trim();newlw.pointxi = Double.Parse(r);i-;string s = sr.ReadLine().Trim();if (s = 42)newlw.converxitynewlw.PointCount - 1 =

16、Double.Parse(sr.ReadLine().Trim();elseif (s = 0)精选范本sr.ReadLine();LwopolylineList.Add(newlw);return;)elsesr.ReadLine();breaKcase0: LwopolylineList.Add(newlw);return;)publicvoid ReadSplineQ精选范本SPLINE newspline =newSPLINE();while (str1 != ENDSEC)(str = ReadPair();switch (strO)(case8: newspline.LName =

17、 str1;breaKcase370: newspline.Iwidth = str1;breaKcase62: newspline.colornum = str1;breaKcase70: newspline.Flag =lnt32.Parse(str1);break;case74: newspline.Count =Int32.Parse(str1);newspline.throughpx =newdoubleInt32.Parse(str1);newspline.throughpy =new doubleInt32.Parse(str1);break;case12: newspline.

18、SVertorX =Double.Parse(str1);break;case22: newspline.SVertorY =Double.Parse(str1);break;case13: newspline.EVertorX = Double.Parse(str1);break;case23: newspline.EVertorY =Double.Parse(str1);break;case11: newspline.throughpx0 =Double.Parse(str1);str = ReadPair();newspline.throughpy0 =Double.Parse(str1

19、);str = ReadPair();for(int i=1;inewspline.throughpx.Length;i+)str=ReadPair();if(str0= 11)newspline.throughpxi=Double.Parse(str1);i-;elseif(str0=21)newspline.throughpyi=Double.Parse(str1);i-;if(newspline.Flag=11)for(int i=0;i3;i+)str=ReadPair();break;精选范本caseO: SplineList.Add(newspline);return;)publi

20、cvoid ReadHeader()(while (str1 != ENDSEC)(str = ReadPair();switch (str1)case$EXTMIN : str = ReadPairQ;精选范本leftx = Double.Parse(str1);str = ReadPair();lefty = Double.Parse(str1);breaKcase$EXTMAX : str = ReadPair();rightx = Double.Parse(str1);str = ReadPair();righty = Double.Parse(str1);breaK)/打开DXF文件

21、privatevoid btOpen_Click(objectsender,EventArgse) btDraw.Enabled 二 falseLayerList.Clear();LineList.Clear();ArcList.Clear();EllipseList.Clear();LwopolylineList.Clear();SplineList.Clear();this.openFileDialogl .ShowDialogO;if (this.openFileDialog1 .FileName.Trim() !-)(string path = this.openFileDialogl

22、 .FileName;fs = new FileStream(path, FileMode.Open, FileAccess.Read);sr = new StreamReade(frs);Read();privatevoid btDraw_Click(object sender,EventArgs e) double width = Math.Ceiling(rightx) -Math.Ceiling(leftx) + 40;double height = Math.Ceiling(righty) -Math.Ceiling(lefty) + 40;Bitmap bmp = newBitmap(int)width, (int)height);Graphics gx = Graphics.FromImage(bmp);double pw = width / ( dou