wie kann ich bestimmte Infos aus Textdokument einlesen?

[Boyington]

Das ist mein Programm mit Code von Klaus

Delphi-Quellcode:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, GLScene, GLMisc, GLVectorFileObjects, GLWin32Viewer, GLFileSTL,
  Menus, ComCtrls, StdCtrls, ExtCtrls, GLTexture, GLObjects, GLHUDObjects;

type
   //TVektor = array[1..3] of real;
    TVektor = record
    x, y, z: real;
    end;

    TDreieck = record
    n: TVektor;
    p: array[1..3] of TVektor;
    end;

    hDreieck = ^TDreieck;

    TMatrix_3x3 = array[1..3, 1..3] of real;
    TMatrix_4x4 = array[1..4, 1..4] of real;
.
.
.
Var
  Form1: TForm1;
  Rotationsmatrix: TMatrix_3x3;
  //Dreiecke:array of TDreieck;
  Dreiecke: TList;
.
.
.
procedure TForm1.Button2Click(Sender: TObject);
const
   recstart='facet normal';
   recline='vertex';
var list:TStrings; line:integer; //data:TDreieck;

FUNCTION FindLine(const s:string; raiseerr:boolean):boolean;
begin
   while (line<list.count) and (Copy(Trim(list[line]),1,Length(s))<>s) do inc(line);
   if line<list.count then result:=true
      else if not raiseerr then result:=false
         else raise Exception.Create(s+' nicht gefunden.');
end;

FUNCTION ReadNumber(const s:string; var i:integer):real;
var j:integer;
begin
   j:=i;
   while s[j]<>' ' do dec(j);
   result:=StrToFloat(Copy(s,j+1,i-j));
   while s[j]=' ' do dec(j);
   i:=j;
end;

PROCEDURE ReadLine(var v:TVektor);
var s:string; i:integer;
begin
   s:=Trim(list[line]);
   i:=Length(s);
   v.z:=ReadNumber(s,i);
   v.y:=ReadNumber(s,i);
   v.x:=ReadNumber(s,i);
   inc(line);
end;

PROCEDURE ReadRecord;
var i:integer; hDreieck:^TDreieck;
begin
   //ReadLine(data.n);
   New(hDreieck) //neu zugefuegt;
   ReadLine(hDreieck^.n); //Fehlermeldung:missing Operator or Semicolon;
   for i:=1 to 3 do begin
      FindLine(recline,true);
      //ReadLine(data.p[i]);
      ReadLine(hDreieck^.p[i]);
   end;
   //SetLength(Dreiecke,Length(Dreiecke)+1);
   //Dreiecke[High(dreiecke)]:=data;
   Dreiecke.Add(hDreieck);
   
end;


// var f:TextFile; i,j:integer; // nur zur Kontrolle benutzt
begin
   Dreiecke:=nil;
   Dreiecke:=TList.Create;
   list:=TStringList.Create;
   try
      try
         //list.text:=Clipboard.AsText;
         List.LoadFromFile(OpenDialog1.FileName);
         line:=0;
         while FindLine(recstart,false) do ReadRecord;
      except
         On E:Exception do begin
            ShowMessage(E.Message);
            Dreiecke:=nil;
         end;
      end;
   finally
      list.free;
   end;
end;



//die Liste zur Kontrolle als Log.txt speichern;
procedure CopyDreiecke(tofile:boolean);
var list:TStrings;

function ToStr(v:real):String;
begin
   result:=FloatToStrF(v,ffExponent,7,3)+' ';
   if result[1]<>'-' then result:=' '+result;
end;

procedure AddVector(const v:TVektor);
type TxVector=Array[0..2] of real;
var s:string; i:integer;
begin
   for i:=0 to High(TxVector) do s:=s+ToStr(TxVector(v)[i]);
   list.Add(s);
end;

var i,j:integer; //hDreieck:^TDreieck;
begin
   list:=TStringList.Create;
   try
      try
         //if Length(Dreiecke)=0 then
         if Dreiecke.Count=0 then
            raise Exception.Create('Dreiecke ist leer.');
         //for i:=0 to High(Dreiecke) do
           for i:=0 to Dreiecke.Count-1 do
            //with Dreiecke[i] do begin
             with hDreieck(Dreiecke[i])^ do begin
               AddVector(n);
               for j:=Low(p) to High(p) do AddVector(p[j]);
               list.Add('');
            end;
         if tofile then list.SaveToFile(ExtractFilePath(ParamStr(0))+'Log.txt');
            //else Clipboard.AsText:=List.Text;
         ShowMessage('fertig.');
      except
         On E:Exception do ShowMessage(E.Message);
      end;
   finally
      list.free;
      for i:=0 to Dreiecke.Count-1 do Dispose(Dreiecke[i]); //neu zugefuegt Code;
      Dreiecke.Free;  //neu zugefuegt Code;
   end;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
CopyDreiecke(true);
end;

end.