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unit Unit1;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, StdCtrls,
ExtCtrls;
type
tTrkPt = record
lat,lon,ele,time: string;
end;
tTrack = record
name: string;
trkPts: array of tTrkPt;
end;
tGpxInhalt = record
kopf: String;
trks: array of tTrack;
end;
tGpxFile = record
prefix: array of string;
gpx: array of tGPXInhalt;
end;
{ tForm1 }
tForm1 = class(tForm)
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Image1: TImage;
ListBox1: TListBox;
ListBox2: TListBox;
ListBox3: TListBox;
OpenDialog1: TOpenDialog;
SaveDialog1: TSaveDialog;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure FormResize(Sender: TObject);
procedure ListBox1Click(Sender: TObject);
procedure ListBox2Click(Sender: TObject);
procedure ListBox3Click(Sender: TObject);
private
{ private declarations }
public
{ public declarations }
d: tGpxFile;
procedure zeichneGpxs;
procedure zeichneTrks;
procedure zeichneTrkPts;
procedure zeichne;
end;
var
form1: tForm1;
function gibFarbe(i: integer): tColor;
function mystrtofloat(S: String): extended;
implementation
uses
math;
{$R *.lfm}
var
farben: array of tColor;
function gibFarbe(i: integer): tColor;
begin
randomize;
while i>=length(farben) do begin
setLength(farben,length(farben)+1);
farben[length(farben)-1]:=random($1000000);
end;
result:=farben[i];
end;
function mystrtofloat(S: String): extended;
begin
while pos('.',S)>0 do
S[pos('.',S)]:=',';
result:=strtofloat(S);
end;
{ tForm1 }
procedure tForm1.Button1Click(Sender: TObject);
var
f: text;
s: string;
m,cnt: integer;
begin
if opendialog1.execute then begin
setLength(D.Prefix,0);
setLength(D.GPX,0);
Assignfile(F,openDialog1.fileName);
Reset(F);
M:=0;
cnt:=0;
s:='';
while (s<>'') or not eof(F) do begin inc(cnt);
if s='' then Readln(F,S);
case M of
0:
if pos('<gpx ',S)>0 then begin
setLength(D.GPX,length(D.GPX)+1);
setLength(D.GPX[length(D.GPX)-1].Trks,0);
delete(S,1,pos('<gpx ',S)+3);
delete(S,pos('>',S),length(S));
D.GPX[length(D.GPX)-1].Kopf:=S;
inc(M);
end
else begin
setLength(D.Prefix,length(D.Prefix)+1);
D.Prefix[length(D.Prefix)-1]:=S;
s:='';
end;
1:
if pos('<trk>',S)>0 then begin inc(cnt);
setLength(D.GPX[length(D.GPX)-1].Trks,length(D.GPX[length(D.GPX)-1].Trks)+1);
D.GPX[length(D.GPX)-1].Trks[length(D.GPX[length(D.GPX)-1].Trks)-1].Name:='';
setLength(D.GPX[length(D.GPX)-1].Trks[length(D.GPX[length(D.GPX)-1].Trks)-1].TrkPts,0);
inc(M);
end
else
dec(M);
2:
if pos('<name>',S)>0 then begin
delete(S,1,pos('<name>',S)+5);
delete(S,pos('</name>',S),length(S));
D.GPX[length(D.GPX)-1].Trks[length(D.GPX[length(D.GPX)-1].Trks)-1].Name:=S;
end
else if pos('<trkseg>',S)>0 then
inc(M)
else
dec(M);
3:
if pos('<trkpt ',S)>0 then begin
setLength(D.GPX[length(D.GPX)-1].Trks[length(D.GPX[length(D.GPX)-1].Trks)-1].TrkPts,
length(D.GPX[length(D.GPX)-1].Trks[length(D.GPX[length(D.GPX)-1].Trks)-1].TrkPts)+1);
with D.GPX[length(D.GPX)-1].Trks[length(D.GPX[length(D.GPX)-1].Trks)-1].TrkPts[
length(D.GPX[length(D.GPX)-1].Trks[length(D.GPX[length(D.GPX)-1].Trks)-1].TrkPts)-1] do begin
delete(S,1,pos('lat="',S)+4);
lat:=copy(S,1,pos('"',S)-1);
delete(S,1,pos('lon="',S)+4);
lon:=copy(S,1,pos('"',S)-1);
if eof(F) then exit;
readln(F,S);
delete(S,1,pos('<ele>',S)+4);
ele:=copy(S,1,pos('</ele>',S)-1);
if eof(F) then exit;
readln(F,S);
delete(S,1,pos('<time>',S)+5);
time:=copy(S,1,pos('</time>',S)-1);
end;
end
else if pos('</trkseg>',S)>0 then
dec(M);
end{of Case};
end;
Closefile(F);
end;
ZeichneGPXs;
messagedlg('ok ('+inttostr(cnt)+')',mtinformation,[mbOk],0);
end;
procedure tForm1.Button2Click(Sender: TObject);
var
F: text;
I,J,K: Integer;
begin
if Savedialog1.Execute then begin
Assignfile(F,Savedialog1.FileName);
Rewrite(F);
for I:=0 to length(D.Prefix)-1 do
Writeln(F,D.Prefix[I]);
for I:=0 to length(D.GPX)-1 do begin
writeln(F,'<gpx'+D.GPX[I].Kopf+'>');
for J:=0 to length(D.GPX[I].Trks)-1 do begin
writeln(F,' <trk>');
while pos('<',D.GPX[I].Trks[J].Name)>0 do
D.GPX[I].Trks[J].Name[pos('<',D.GPX[I].Trks[J].Name)]:='-';
while pos('>',D.GPX[I].Trks[J].Name)>0 do
D.GPX[I].Trks[J].Name[pos('>',D.GPX[I].Trks[J].Name)]:='+';
writeln(F,' <name>'+D.GPX[I].Trks[J].Name+'</name>');
writeln(F,' <trkseg>');
for K:=0 to length(D.GPX[I].Trks[J].TrkPts)-1 do begin
writeln(F,' <trkpt lat="'+D.GPX[I].Trks[J].TrkPts[K].lat+
'" lon="'+D.GPX[I].Trks[J].TrkPts[K].lon+'">');
writeln(F,' <ele>'+D.GPX[I].Trks[J].TrkPts[K].ele+'</ele>');
writeln(F,' <time>'+D.GPX[I].Trks[J].TrkPts[K].time+'</time>');
writeln(F,' </trkpt>');
end;
writeln(F,' </trkseg>');
writeln(F,' </trk>');
end;
writeln(F,'</gpx>');
end;
Closefile(F);
end;
end;
procedure tForm1.Button3Click(Sender: TObject);
var
I: Integer;
begin
if Listbox1.ItemIndex<0 then exit;
if Listbox2.ItemIndex<0 then exit;
if Listbox3.ItemIndex<0 then exit;
with D.GPX[Listbox1.Itemindex] do begin
setlength(Trks,length(Trks)+1);
for I:=length(Trks)-1 downto Listbox2.ItemIndex+1 do
Trks[I]:=Trks[I-1];
setlength(Trks[Listbox2.Itemindex].TrkPts,Listbox3.ItemIndex+1);
Trks[Listbox2.Itemindex].Name:=Trks[Listbox2.Itemindex].Name+'<';
with Trks[Listbox2.Itemindex+1] do begin
for I:=Listbox3.ItemIndex to length(TrkPts)-1 do
TrkPts[I-Listbox3.ItemIndex]:=TrkPts[I];
setlength(TrkPts,length(TrkPts)-Listbox3.ItemIndex);
Name:=Name+'>';
end;
end;
ZeichneTRKs;
end;
procedure tForm1.Button4Click(Sender: TObject);
var
i: integer;
begin
if Listbox1.ItemIndex<0 then exit;
if Listbox2.ItemIndex<0 then exit;
with D.GPX[Listbox1.ItemIndex] do begin
for I:=Listbox2.ItemIndex+1 to length(Trks)-1 do
Trks[I-1]:=Trks[I];
setlength(Trks,length(Trks)-1);
ZeichneTRKs;
end;
end;
procedure tForm1.FormResize(Sender: TObject);
begin
Listbox3.Height:=Form1.ClientHeight-Listbox3.Top;
Zeichne;
end;
procedure tForm1.ListBox1Click(Sender: TObject);
begin
ZeichneTRKs;
end;
procedure tForm1.ListBox2Click(Sender: TObject);
begin
ZeichneTRKPTs;
end;
procedure tForm1.ListBox3Click(Sender: TObject);
begin
Zeichne;
end;
procedure tForm1.zeichneGpxs;
var
i: integer;
begin
Listbox1.Items.Clear;
for I:=0 to length(D.GPX)-1 do
Listbox1.Items.Add(D.GPX[I].Kopf);
ZeichneTRKs;
end;
procedure tForm1.zeichneTrks;
var
i: integer;
begin
Listbox2.Items.Clear;
if Listbox1.ItemIndex>=0 then
for i:=0 to length(D.GPX[Listbox1.ItemIndex].Trks)-1 do
Listbox2.Items.Add(D.GPX[Listbox1.ItemIndex].Trks[I].Name);
ZeichneTRKPTs;
end;
procedure tForm1.zeichneTrkPts;
var
i: integer;
begin
Listbox3.Items.Clear;
if (Listbox1.ItemIndex>=0) and (Listbox2.ItemIndex>=0) then
For I:=0 to length(D.GPX[Listbox1.ItemIndex].Trks[Listbox2.ItemIndex].TrkPts)-1 do
Listbox3.Items.Add(D.GPX[Listbox1.ItemIndex].Trks[Listbox2.ItemIndex].TrkPts[I].lat+' '+
D.GPX[Listbox1.ItemIndex].Trks[Listbox2.ItemIndex].TrkPts[I].lon+' '+
D.GPX[Listbox1.ItemIndex].Trks[Listbox2.ItemIndex].TrkPts[I].time+' '+
D.GPX[Listbox1.ItemIndex].Trks[Listbox2.ItemIndex].TrkPts[I].ele);
Zeichne;
end;
procedure tForm1.zeichne;
var
I,TI: Integer;
Xmi,Xma,
Ymi,Yma,
tx,ty: extended;
begin
Image1.Free;
Image1:=TImage.Create(Form1);
Image1.Parent:=Form1;
Image1.Left:=344;
Image1.Top:=0;
Image1.Width:=Form1.ClientWidth-Image1.Left;
Image1.Height:=Form1.ClientHeight-Image1.Top;
Image1.Canvas.Rectangle(-10,-10,Image1.Width+10,Image1.Height+10);
if Listbox1.ItemIndex<0 then exit;
XMi:=0;
XMa:=0;
YMi:=0;
YMa:=0;
for TI:=0 to Listbox2.Items.Count-1 do
for I:=0 to length(D.GPX[Listbox1.Itemindex].Trks[TI].TrkPts)-1 do
with D.GPX[Listbox1.Itemindex].Trks[TI].TrkPts[I] do
begin
tx:=mystrtofloat(lon);
ty:=mystrtofloat(lat);
if ((TI=0) and (I=0)) or (tx<xMi) then xMi:=tx;
if ((TI=0) and (I=0)) or (tx>xMa) then xMa:=tx;
if ((TI=0) and (I=0)) or (ty<yMi) then yMi:=ty;
if ((TI=0) and (I=0)) or (ty>yMa) then yMa:=ty;
end;
xMa:=(Image1.Width-4)/max(1e-10,xMa-xMi);
yMi:=(Image1.Height-4)/max(1e-10,yMa-yMi);
for TI:=0 to Listbox2.Items.Count-1 do
begin
Image1.Canvas.Pen.Width:=1+2*Byte(TI=Listbox2.ItemIndex);
Image1.Canvas.Pen.Color:=gibFarbe(TI);
for I:=0 to length(D.GPX[Listbox1.Itemindex].Trks[TI].TrkPts)-1 do
with D.GPX[Listbox1.Itemindex].Trks[TI].TrkPts[I] do
begin
tx:=2+(mystrtofloat(lon)-xMi)*xMa;
ty:=2+(yMa-mystrtofloat(lat))*yMi;
if I=0 then Image1.Canvas.MoveTo(round(tx),round(ty))
else Image1.Canvas.LineTo(round(tx),round(ty));
end;
Image1.Canvas.Pen.Width:=1;
Image1.Canvas.Pen.Color:=$000000;
end;
if Listbox2.ItemIndex<0 then exit;
if Listbox3.ItemIndex<0 then exit;
with D.GPX[Listbox1.Itemindex].Trks[Listbox2.ItemIndex].TrkPts[Listbox3.ItemIndex] do
begin
tx:=2+(mystrtofloat(lon)-xMi)*xMa;
ty:=2+(yMa-mystrtofloat(lat))*yMi;
end;
Image1.Canvas.MoveTo(round(tx),round(ty)-4);
Image1.Canvas.LineTo(round(tx),round(ty)+5);
Image1.Canvas.MoveTo(round(tx)-4,round(ty));
Image1.Canvas.LineTo(round(tx)+5,round(ty));
end;
end.
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