C# 读取DXF文件

1、.using system;using system.collections.generic;using system.componentmodel;using system.data;using system.drawing;using system.text;using system.windows.forms;using system.io;using system.collections;namespace dxf public partial class form1 : form private filestream fs; private streamreader sr; priv

2、ate arraylist layerlist = new arraylist(); private arraylist linelist = new arraylist(); private arraylist arclist=new arraylist(); private arraylist ellipselist = new arraylist(); private arraylist lwopolylinelist = new arraylist(); private arraylist splinelist=new arraylist(); private string str =

3、 new string2; private int count; private double leftx; private double lefty;精品. private double rightx; private double righty; public form1() initializecomponent(); private string readpair() string code = sr.readline().trim(); string codedata = sr.readline().trim(); count += 2; string result = new st

4、ring2 code, codedata ; return result; private void read() while (sr.peek() != -1) str = readpair(); if (str1 = section) str = readpair(); switch (str1)精品. case header: readheader(); break; case tables: readtable(); break; case entities: readentities(); break; sr.close(); fs.close(); btdraw.enabled =

5、 true; label1.text = count.tostring(); count = 0; private void readtable() while (str1 != endsec) while (str0 != 2 | str1 != layer) str = readpair(); 精品. while (str0 != 0 | str1 != layer) str = readpair(); while (str0 = 0 & str1 = layer) readlayer(); while (str1 != endsec) str = readpair(); private

6、void readlayer() layer newlayer = new layer(); while (str1 != endtab) str = readpair(); switch (str0) case 2: = str1; break; case 62: newlayer.colornum = str1;精品. break; case 6: newlayer.lstyle = str1; break; case 370: newlayer.lwidth = str1; break; if (str0 = 0 & str1 = layer) layerli

7、st.add(newlayer); return; layerlist.add(newlayer); private void readentities() while (str1 != endsec) switch (str1) case line: readline(); break; case arc: readarc(); break; case circle: readarc();精品. break; case ellipse: readellipse(); break; case lwpolyline: readlwpolyline(); break; case spline: r

8、eadspline(); break; default: str = readpair(); break; private void readarc() arc newarc = new arc(); while (str1 != endsec) str = readpair(); switch (str0) case 8: newarc.lname = str1; break; case 10: newarc.centerx = double.parse(str1); break;精品. case 20: newarc.centery = double.parse(str1); break;

9、 case 40: newarc.radiu = double.parse(str1); break; case 50: newarc.sangle = double.parse(str1); break; case 51: newarc.eangle = double.parse(str1); break; case 370: newarc.lwidth = str1; break; case 0: arclist.add(newarc); return; private void readline() line newline = new line(); while (str1 != en

10、dsec) str = readpair(); switch (str0) case 8: newline.lname = str1; break;精品. case 10: newline.startx = double.parse(str1); break; case 20: newline.starty = double.parse(str1); break; case 11: newline.endx = double.parse(str1); break; case 21: newline.endy = double.parse(str1); break; case 62: newli

11、ne.colornum = str1; break; case 370: newline.lwidth = str1; break; case 0: linelist.add(newline); return; private void readellipse() ellipse newellipse = new ellipse(); while (str1 != endsec) str = readpair(); switch (str0) 精品. case 8: newellipse.lname = str1; break; case 10: newellipse.centerx = do

12、uble.parse(str1); break; case 20: newellipse.centery = double.parse(str1); break; case 11: newellipse.deltax = double.parse(str1); break; case 21: newellipse.deltay = double.parse(str1); break; case 40: newellipse.radio = double.parse(str1); break; case 41: newellipse.psangle = double.parse(str1); b

13、reak; case 42: newellipse.peangle = double.parse(str1); break; case 370: newellipse.lwidth = str1; break; case 0: ellipselist.add(newellipse); return; private void readlwpolyline() 精品. lwpolyline newlw = new lwpolyline(); while (str1 != endsec) str = readpair(); switch (str0) case 8: newlw.lname = s

14、tr1; break; case 370: newlw.lwidth = str1; break; case 62: newlw.colornum = str1; break; case 90: newlw.pointcount = int32.parse(str1); break; case 70: newlw.flag = int32.parse(str1); break; case 10: newlw.pointx = new doublenewlw.pointcount; newlw.pointy = new doublenewlw.pointcount; /if (newlw.fla

15、g = 1) newlw.converxity = new doublenewlw.pointcount; /else /newlw.converxity = new doublenewlw.pointcount - 1; newlw.pointx0 = double.parse(str1); str=readpair(); newlw.pointy0 = double.parse(str1); for (int i = 1; i newlw.pointcount; i+)精品. string temp = sr.readline().trim(); if (temp = 42) newlw.

16、converxityi - 1 = double.parse(sr.readline().trim(); i-; else if (temp = 20) string r = sr.readline().trim(); newlw.pointyi = double.parse(r); else string r = sr.readline().trim(); newlw.pointxi = double.parse(r); i-; string s = sr.readline().trim(); if (s = 42) newlw.converxitynewlw.pointcount - 1

17、= double.parse(sr.readline().trim(); else if (s = 0) sr.readline(); lwopolylinelist.add(newlw);精品. return; else sr.readline(); break; case 0: lwopolylinelist.add(newlw); return; public void readspline() spline newspline = new spline(); while (str1 != endsec) str = readpair(); switch (str0) case 8: n

18、ewspline.lname = str1; break; case 370: newspline.lwidth = str1; break; case 62: newspline.colornum = str1; break; case 70: newspline.flag = int32.parse(str1); break;精品. case 74: newspline.count = int32.parse(str1); newspline.throughpx = new doubleint32.parse(str1); newspline.throughpy = new doublei

19、nt32.parse(str1); break; case 12: newspline.svertorx = double.parse(str1); break; case 22: newspline.svertory = double.parse(str1); break; case 13: newspline.evertorx = double.parse(str1); break; case 23: newspline.evertory = double.parse(str1); break; case 11: newspline.throughpx0 = double.parse(st

20、r1); str = readpair(); newspline.throughpy0 = double.parse(str1); str = readpair(); for(int i=1;inewspline.throughpx.length;i+) str=readpair(); if(str0=11) newspline.throughpxi=double.parse(str1); i-; else if(str0=21) 精品. newspline.throughpyi=double.parse(str1); i-; if(newspline.flag=11) for(int i=0

21、;i3;i+) str=readpair(); break; case 0: splinelist.add(newspline); return; public void readheader() while (str1 != endsec) str = readpair(); switch (str1) case $extmin: str = readpair();精品. leftx = double.parse(str1); str = readpair(); lefty = double.parse(str1); break; case $extmax: str = readpair()

22、; rightx = double.parse(str1); str = readpair(); righty = double.parse(str1); break; /打开dxf文件 private void btopen_click(object sender, eventargs e) btdraw.enabled = false; layerlist.clear(); linelist.clear(); arclist.clear(); ellipselist.clear(); lwopolylinelist.clear(); splinelist.clear(); this.ope

23、nfiledialog1.showdialog(); if (this.openfiledialog1.filename.trim() != ) 精品. string path = this.openfiledialog1.filename; fs = new filestream(path, filemode.open, fileaccess.read); sr = new streamreader(fs); read(); private void 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 = new bitmap(int)width, (int)height); graphics gx = graphics.fromimage(bmp); double