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grafunit.pas
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grafunit.pas
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{
Grafunit.pas - Procedures and functions for DosPlot
Copyright (C) 2004 Gert van den Berg
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
}
{$IFDEF FPC}
{$INLINE ON}
{$DEFINE EXCEPT} // Free Pascal het exceptions wat gehandle moet word.
// Delphi ook maar dit behoort NIE te werk NIE
{$MODE Delphi}
{$H-}
{$GOTO ON}
{$ENDIF}
{$N+}
{$E-}
{$G+}
Unit GrafUnit;
Interface
uses pcalcexp;
{--CONSTANTS------------------------------------------------------------------}
const
version = '1.1';
year = '2004';
configfilename = 'dosplot.cfg';
logfilename = 'dosplot.log';
htab = #09;
kolomme = 3;
{--TYPES----------------------------------------------------------------------}
Type
{$IFNDEF FPC}
Shortstring = String;
Smallint = Integer;
{$Endif}
SettingT = Packed Record
x,y : longint;
kleur : word;
skaal : word;
detail : word;
gd,gm : smallint;
linemode : bytebool;
bgipath : shortstring;
view : bytebool;
End;
GraphT = Record
postfix : postft;
min : real;
max : real;
End;
CommandT = (setcolorl,cls,setdetail,setlinemode,setscale,setx,sety,
plotx,ploty,plotxd,plotyd,comment,putdotl,savel,loadl,
pushposl,delayl, waitl,unknownl,headerl);
{--VARS-----------------------------------------------------------------------}
Var maxx, maxy : word;
gm : smallint;
gothfont, sansfont : smallint;
{-PROCEDURES AND FUNCTIONS----------------------------------------------------}
function UpperCase(S: string): string;
Procedure FuncInfo;
Procedure Credits;
Procedure Init;
Procedure Asse(sets: settingT);
Procedure Kleurkodes;
Procedure DefSetts(var settings : settingT);
Procedure SaveSettings(fname : string;var sets : settingT);
Procedure LoadSettings(fname : string;var sets : settingT);
Procedure LogEvent(const evt : STRING);
Procedure PutDot(const realx,realy : extended;
const size : byte;
const filled : boolean;
const settings : SettingT);
Function Str2Graph(inp : shortstring;var output : GraphT): longint;
Function Num2Str(inp : extended) :string;
Function Int2Str(inp : integer) :string;
Function SafeRound(inp : extended) : longint;
Function BuildString : shortstring;
Function FileExists(fname : string) : boolean;
Function IDScriptLine(line : string) : CommandT;
Function ScriptLineDescript(const Linetype : CommandT) : String;
Function OpenScript(var txt :text;filename : string) : Byte;
Function MinParams(const Linetype : CommandT) : Byte;
Function ParseString(const str : string; var error : boolean;
x,y,z : extended) : extended;
{-----------------------------------------------------------------------------}
Implementation
{--USES------------------------------------------------------------------------}
uses
crt,
{$ifdef Win32}
windows,
{$endif}
{$ifdef LINUX}ptcgraph{$else}graph{$endif}
,dos
{$IfNDEF FPC}
,bgifont3,VGAdriv
{$ENDIF};
{--TYPES----------------------------------------------------------------------}
TYPE
SettingFT = file of settingT;
{-PROCEDURES AND FUNCTIONS----------------------------------------------------}
function UpperCase(S: string): string;
var
I: Integer;
begin
for I := 1 to Length(S) do
s[I] := UpCase(S[i]);
UpperCase := S;
end;
{-----------------------------------------------------------------------------}
Procedure FuncInfo;
{Shows what can be used at "custom vergelyking"}
const
Funccount = 36;
Functions : Array[1..funccount] of String[10]
= ('ASIN','ARCSIN','ACOS','ARCCOS','ATAN','ARCTAN','SIN',
'COS','TAN','COT','SEC','COSEC','NEG','LN','LOG',
'EXP','TRUNC','ABS','ROUND','SQR','DEG','SQRT','SINH',
'COSH','TANH','ARCSINH','ARCTANH','ARCCOSH','ASINH',
'ATANH','ACOSH','SECH','COSECH','CSCH','COTH','CSC');{}
var
i : integer;
BEGIN
{$IFNDEF LINUX}
Window(1,10,41,36);
{$ELSE}
Window(1,5,41,25);
{$ENDIF}
TextBackground(Green);
ClrScr;
{$IFNDEF LINUX}
Window(2,5,41,25);
{$ELSE}
Window(2,5,41,25);
{$ENDIF}
TextColor(White);
Writeln('Supported Functions:');
Writeln('--------------------');
Writeln;
For i := 1 to FuncCount do
Begin
Write(Functions[i],htab);
If (i mod kolomme = 0) then
Writeln;
End;
(* Writeln('|------------|------------------------|');
Writeln('|Function: |Description: |');
Writeln('|------------|------------------------|');
Writeln('|ASIN/ARCSIN | Arcsin of the number |');
Writeln('|ACOS/ARCCOS | Arccos of the number |');
Writeln('|ATAN/ARCTAN | Arctan of the number |');
Writeln('|SIN | Sine of the number |');
Writeln('|COS | Cosine of the number |');
Writeln('|TAN | Tangent of the number |');
Writeln('|COT | Cotangent of the number|');
Writeln('|SEC | 1/cos(x) |');
Writeln('|COSEC | 1/sin(x) |');
Writeln('|ABS | Absolute value of num. |');
Writeln('|SQRT | Square root of number |');
Writeln('|LN | Natural log. of number |');
Writeln('|LOG | Log of number base 10 |');
Writeln('|EXP | e^number; e=2,71828... |');
Writeln('|SQR | number^2 |');
Writeln('|DEG | Degrees -> Radians |');
Writeln('|TRUNC | Integer part of number |');
Writeln('|ROUND | rounds num. to integer |');
Writeln('---------------------------------------');
*)
Window(59,10,80,20);
TextBackground(Blue);
TextColor(Yellow);
ClrScr;
Window(60,11,80,20);
Writeln('Operators:');
Writeln('----------');
Writeln;
Writeln('+ Addition');
Writeln('- Substraction');
Writeln('* Multiplication');
Writeln('/ Division');
Writeln('^ Exponetiation');
Write ('% Modulus');
{$IFNDEF LINUX}
Window(1,1,80,9);
{$ELSE}
Window(1,1,80,4);
{$ENDIF}
TextColor(7);
TextBackground(Black);
ClrScr;
END;
{-----------------------------------------------------------------------------}
Procedure Credits;
{- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - }
Procedure RGBSetPalette(color,r,g,b : byte);
Begin
{$Ifdef fpc}
SetRGBPalette(color,r,g,b);
{$Else}
SetRGBPalette(color,round(r/255*63),round(g/255*63),round(b/255*63));
{$ENDIF}
End;
{- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - }
{$IFNDEF FPC}
Function Fade(x,y : word;text : string;color : byte;font,size : byte;
r,g,b : single;tyd : word) : boolean;
var ch : char;
i : integer;
Begin
Fade := False;
SetColor(color);
SetRGBPalette(color,0,0,0);
Settextjustify(1,1);
SettextStyle(font,0,size);
OuttextXY(x,y,text);
ch := #0;
i := 0;
While (ch <> #27) and (i < 255) do
Begin
RGBSetPalette(color,Round(r*i),Round(g*i),Round(b*i));
Delay(tyd);
Inc(i);
If keypressed then ch := Readkey;
End;
i := 255;
While (ch <> #27) and (i >= 0) do
Begin
rgbSetPalette(color,Round(r*i),Round(g*i),Round(b*i));
Delay(tyd);
Dec(i);
If keypressed then ch := Readkey;
End;
If ch = #27 then Fade := true;
End;
{$ENDIF}
{- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - }
var oldpal : PaletteType;
oldcol : word;
{$IFNDEF FPC}
run : boolean;
cancel : boolean;
{$ENDIF}
Begin
SetGraphMode(gm);
GetPalette(oldpal);
oldcol := GetColor;
ClearViewPort;
{$IFNDEF FPC}
SettextStyle(0,0,1);
SetColor(7);
RGBSetPalette(7,100,100,100);
Settextjustify(2,0);
OuttextXY(maxx,maxy,'Press Esc to continue...');
Delay(200);
{StartUp procedure Finished}
{ Function Fade(x,y,text,color,font,size,r,g,b,tyd):boolean(is gecancel)}
Run := true;
cancel := Fade(maxx div 2,maxy div 2,'DosPlot version '+version,1,4,5,0,0.5,1,2);
Run := not(Cancel);
If run then
Begin
cancel := Fade(maxx div 2,maxy div 2,'is proudly presented',2,3,4,0,0,1,2);
Run := not(Cancel);
End;
If run then
Begin
cancel := Fade(maxx div 2,maxy div 2,'by',3,3,4,0,1,0,10);
Run := not(Cancel);
End;
If run then
Begin
cancel := Fade(maxx div 2,maxy div 2,'Gert van den Berg',4,3,4,1,0,0,10);
Run := not(Cancel);
End;
if keypressed then readkey;
{$ENDIF}
ClearViewPort;
SettextStyle(0,0,1);
SetColor(1);
RGBSetPalette(1,220,0,0);
Settextjustify(0,2);
OuttextXy(0,0 ,'DosPlot version '+version);
SetColor(2);
OuttextXy(0,10 ,buildstring);
RGBSetPalette(2,180,180,180);
Settextjustify(0,2);
OuttextXy(0,40 ,'Copyright (C) '+year+' Gert van den Berg');
OuttextXy(0,60 ,'This program is free software; you can redistribute it and/or modify');
OuttextXy(0,70 ,'it under the terms of the GNU General Public License as published by');
OuttextXy(0,80 ,'the Free Software Foundation; either version 2 of the License, or');
OuttextXy(0,90 ,'(at your option) any later version.');
OuttextXy(0,110,'This program is distributed in the hope that it will be useful,');
OuttextXy(0,120,'but WITHOUT ANY WARRANTY; without even the implied warranty of');
OuttextXy(0,130,'MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the');
OuttextXy(0,140,'GNU General Public License for more details.');
OuttextXy(0,160,'You should have received a copy of the GNU General Public License');
OuttextXy(0,170,'along with this program; if not, write to the Free Software');
OuttextXy(0,180,'Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA');
OuttextXy(0,200,'This license can be found in license.txt');
OuttextXy(0,220,'Additional credits:');
OuttextXy(0,240,'OG Francis: Helped debugging code to save / Load screen');
SetColor(3);
RGBSetPalette(3,255,255,255);
SetColor(4);
RGBSetPalette(4,220,220,220);
Settextjustify(0,0);
OuttextXy(0,maxy,'Press any key to return to main menu...');
Readkey;
{ShutDown procedure starting}
SetAllPalette(oldpal);
SetColor(oldcol);
RestoreCrtMode;
End;
{-----------------------------------------------------------------------------}
Procedure Init;
var c : smallint;
ch : char;
ec : smallint;
sets : settingT;
DirInfo : Searchrec;
registered : byte;
VGADrv : smallint;
oldpath : string;
vesa : boolean;
{$IFDEF FPC}
hi,lo : smallint;
{$ENDIF}
Begin
maxx := 0;
maxy := 0;
LoadSettings(configfilename,sets);
vesa := false;
VGADRV := 9;
SANSFont := 3;
GothFont := 4;
registered := 1;
oldpath := sets.bgipath;
{$IFNDEF FPC} {Not needed in Free Pascal}
VGADrv := RegisterBGIdriver(@EGAVGADriverProc);
if VGADrv < 0 then
registered := 0;{}
GothFont := RegisterBGIfont(@GothicFontProc);
if gothfont < 0 then
registered := 0;{}
{ if RegisterBGIfont(@LittFontProc) < 0 then
registered := false;{}
sansfont := RegisterBGIfont(@SansFontProc);
if Sansfont < 0 then
registered := 0;{}
{ if RegisterBGIfont(@TriplexFontProc) < 0 then
registered := false;
if RegisterBGIfont(@BoldFontProc) < 0 then
registered := false;
if RegisterBGIfont(@EuroFontProc) < 0 then
registered := false;
if RegisterBGIfont(@LcomFontProc) < 0 then
registered := false;
if RegisterBGIfont(@ScriFontProc) < 0 then
registered := false;
if RegisterBGIfont(@SimpFontProc) < 0 then
registered := false;
if RegisterBGIfont(@TscrFontProc) < 0 then
registered := false;{}
If (paramStr(1) = '/G') or (paramStr(1) = '/g') then
begin
Writeln('Which video driver would you like to use? ');
Writeln(' 0) VESA');
Writeln(' 9) VGA');
Write('>');
ch := readkey;
Val(ch,sets.gd,c);
If c <> 0 then Halt;
Case sets.gd of
0 :
begin
ClrScr;
Writeln('Which video mode would you like to use? ');
Writeln(' 0) 320x200');
Writeln(' 1) 640x200');
Writeln(' 2) 640x350');
Writeln(' 3) 640x480');
Writeln(' 4) 800x600');
Writeln(' 5) 1024x768');
Writeln(' 6) 1280x1024');
Write('>');
ch := readkey;
Val(ch,sets.gm,c);
sets.GD := InstallUserDriver('SVGA16', Nil);{}
vesa := true;
end;
9 :
begin
ClrScr;
Writeln('Which video mode would you like to use? ');
Writeln(' 0) 640x200');
Writeln(' 1) 640x350');
Writeln(' 2) 640x480');
Write('>');
ch := readkey;
if ch = '9' then ch := '2';
Val(ch,sets.gm,c);
If (registered = 1) then
Begin
sets.bgipath := '';
{
sets.gd := VGADrv;{}
sets.gd := 9;
End
else
sets.gd := 9;
end;
else
Writeln('Invalid driver...');
Readkey;
Halt(1);
End;{Case}
If c <> 0 then Halt;
end; (* *)
If ((not(registered=1)) or (vesa)) then FindFirst(sets.bgipath+'*.BGI', AnyFile, DirInfo)
else sets.bgipath := '';
while (DosError <> 0) do
Begin
ClrScr;{}
Writeln('BGI files not found. Please enter path. (e.g. C:\BGI\) Type "exit" to quit.');
Write('>');
Readln(sets.bgipath);
If UpperCase(sets.bgipath) = 'EXIT' then halt;
If sets.bgipath[length(sets.bgipath)] <> '\' then sets.bgipath := sets.bgipath + '\';
FindFirst(sets.bgipath+'*.BGI', AnyFile, DirInfo);
oldpath := sets.bgipath;
End;
{$ELSE} // In Free Pascal
If (Uppercase(paramStr(1)) = '/G') then
Begin
Writeln('Which colour depth do you want to use? ');
Writeln(' 13) 16 colours');
Writeln(' 15) 256 colours');
Writeln(' 17) 32768 colours (15 bit)');
Writeln(' 18) 65536 colours (16 bit)');
Writeln;
Writeln('256 colours are recommended as some video cards don''t support 16 colors at');
Writeln('high resolutions.');
Writeln;
Writeln('256 colour mode selected. Other modes disabled in ths version.');
sets.gd := 15;
(* Repeat
Write('>');
{$I-}readln(sets.gd);{$I+}
Until (IOResult = 0) and (sets.gd in [13,15,17,18]);*)
GetModeRange(sets.gd,lo,hi);
Writeln('Which resolution would you like to use? ');
Writeln(' -1) Cancel');
Writeln(' 0) Auto');
For c := lo to hi do
Case c of
1 : Writeln(c :3,') 320x200');
2 : Writeln(c :3,') 640x400');
3 : Writeln(c :3,') 640x480');
4 : Writeln(c :3,') 800x600');
5 : Writeln(c :3,') 1024x768');
6 : Writeln(c :3,') 1280x1024');
7 : Writeln(c :3,') 1600x1200 ?');
8 : Writeln(c :3,') 2048x1536 ?');
Else
Writeln (c :3,') UnKnown mode');
End;
Writeln;
Writeln('Modes may differ at colour depths other than 8bit (256 colour).');
If (hi = -1) then writeln('No Modes supported at this color depth.')
else Writeln('Lowest supported mode: ',lo ,' Highest supported mode: ',hi);
Repeat
Write('>');
{$I-}readln(sets.gm);{$I+}
Until (IOResult = 0) and ((sets.gm = -1) or (sets.gm in [0,lo..hi]));
If sets.gm = -1 then halt;
If sets.gm = 0 then sets.gm := 30000;
End;
{$ENDIF}
Repeat
InitGraph(sets.gd,sets.gm,sets.bgipath{});
{$ifdef Win32}
ShowWindow(GetActiveWindow,0);
{$endif}
ec := graphResult;
If ec <> GrOK then
Begin
Writeln(GraphErrorMsg(ec));
Writeln('Run GRAFIEK /G to change video mode');
LogEvent('Error while initiliazing graphics.');
LogEvent(GraphErrorMsg(ec));
Logevent('Settings:');
LogEvent('Driver: '+Int2str(sets.gd)+' '+Getdrivername);
LogEvent('Mode: '+Int2str(sets.gm)+' ' + Getmodename(sets.gm));
{$IFNDEF FPC}
If ec = grFileNotFound then
Begin
Repeat
Writeln('BGI files not found in ',oldpath,'. Please enter path. (e.g. C:\BGI\) Type "exit" to quit.');
Write('>');
Readln(sets.bgipath);
If UpperCase(sets.bgipath) = 'EXIT' then halt;
If sets.bgipath[length(sets.bgipath)] <> '\' then sets.bgipath := sets.bgipath + '\';
FindFirst(sets.bgipath+'*.BGI', AnyFile, DirInfo);
oldpath := sets.bgipath;
ClrScr;{}
Until (DosError = 0);
Writeln('Please restart program');
SaveSettings(configfilename,sets)
End else
Halt(1);
{$ELSE}
Halt(1);
{$ENDIF}
End;
MaxX := Getmaxx; Maxy := getmaxy;
Until ec = GrOk;
if sets.x = 0 then sets.x := maxx div 2;
if sets.y = 0 then sets.y := maxy div 2;
sets.bgipath := oldpath;
SaveSettings(configfilename,sets);
gm := Sets.gm;
End; (* *)
{----------------------------------------------------------------------------}
Procedure Asse(sets: settingT);
var oukleur : word;
outs : textsettingsType;
a : integer;
Begin
OuKleur := GetColor;
GettextSettings(outs);
SetBkColor(Black);
SetColor(Black);
SetBkColor(Black);
ClearDevice;
{ Rectangle(0,0,maxx,maxy);}
FloodFill(1,1,black);
If sets.skaal > 1 then
Begin
SetColor(DarkGray);
a := sets.x;
While a <= maxX do
Begin
line (a,0,a,MaxY);
a:= a + sets.skaal;
End;
a := sets.x;
While a >= 0 do
Begin
line (a,0,a,MaxY);
a:= a - sets.skaal;
End;
a := sets.y;
While a < maxY do
Begin
line (0,a,MaxX,a);
a:= a + sets.skaal;
End;
a := sets.y;
While a >= 0 do
Begin
line (0,a,MaxX,a);
a:= a - sets.skaal;
End;
End;
SetColor(White);
Line(sets.x,0,sets.x,maxy);
Line(0,sets.y,maxx,sets.y);
Settextstyle(0,0,1); SetColor(green);
SettextJustify(LeftText, Toptext); OuttextXY(sets.x+2,0,'Y');
SettextJustify(RightText, Toptext); OuttextXY(maxx,sets.y+2,'X');
with outs do
Begin
SetColor(oukleur);
SettextStyle(font,direction,Charsize);
SettextJustify(horiz,vert);
End;
End;
{----------------------------------------------------------------------------}
Procedure Kleurkodes;
Begin
{$IFNDEF LINUX}
Window(60,10,80,27);
{$ELSE}
Window(60,20,80,17);
{$ENDIF}
TextBackground(Blue);
ClrScr;
{$IFNDEF LINUX}
Window(61,11,80,27);
{$ELSE}
Window(61,21,80,17);
{$ENDIF}
ClrScr;
TextColor(White);
WriteLn('0 Black');
WriteLn('1 Blue');
WriteLn('2 Green');
WriteLn('3 Cyan');
WriteLn('4 Red');
WriteLn('5 Magenta');
WriteLn('6 Brown');
WriteLn('7 LightGray');
WriteLn('8 DarkGray');
WriteLn('9 LightBlue');
WriteLn('10 LightGreen');
WriteLn('11 LightCyan');
WriteLn('12 LightRed');
WriteLn('13 LightMagenta');
WriteLn('14 Yellow');
WriteLn('15 White');
end;
{-----------------------------------------------------------------------------}
Procedure DefSetts(var settings : settingT);
Begin
Settings.X := MaxX div 2;
Settings.Y := MaxY div 2;
Settings.skaal := 15;
Settings.kleur := LightGreen;
settings.detail := 50;
settings.linemode := true;
settings.view := true;
end;
{----------------------------------------------------------------------------}
Procedure SaveSettings(fname : string;var sets : settingT);
var lr : settingFT;
Begin
Assign(lr,fname);
Rewrite(lr);
Write(lr, sets);
Close(lr);
LogEvent('Settings saved to '+fname);
End;
{----------------------------------------------------------------------------}
Procedure LogEvent(const evt : STRING);
var
log : text;
h,min,s,hs,y,m,d : word;
BEGIN
GetDate(y,m,d,hs);
GetTime(h,min,s,hs);
Assign(log,logfilename);
{$I-}Append(log);{$I+}
IF IOResult <> 0 then
Begin
REwrite(log);
Writeln(log,'DosPlot version '+version+' log file');
Writeln(log,'------------------------------')
End;
Writeln(log,d:2,'/',m:2,'/',y:4,' ',h:2,':',min:2,':',s:2,'.',hs*10:3,
' ',evt);
{$I-}Close(log);{$I+}
If IOResult <> 0 then
Begin
Sound(500);
Delay(500);
NoSound;
End;
END;
{----------------------------------------------------------------------------}
Procedure LoadSettings(fname : string;var sets : settingT);
var lr : settingFT;
i : byte;
label fixfile;
Begin
Assign(lr,fname);
{$I-}Reset(lr);{$I+}
For i := 1 to 255 do
sets.bgipath[i] := #0;
If IOResult <> 0 then
Begin
fixfile:
Rewrite(lr);
DefSetts(sets);
sets.gd := 9;
sets.gm := 2;
sets.bgipath := '.\bgi\';
Write(lr,sets);
LogEvent('Settings file "'+fname+'" corrupt or missing. Repaired.');
end
else
Begin
{$I-}
Read(lr,sets);
{$I+}
If IOresult <> 0 then goto fixfile
else Logevent('Settings loaded from '+fname);
End;
{ if maxx < 10 then sets.x := 319;
if maxy < 10 then sets.y := 239;}
Close(lr);
End;
{----------------------------------------------------------------------------}
Procedure PutDot(const realx,realy : extended;
const size : byte;
const filled : boolean;
const settings : SettingT);
var
x,y : longint;
oldcolor : word;
oldfill : word;
Begin
x := Settings.x + round(realx*settings.skaal);
y := Settings.y + round(realy*settings.skaal);
oldColor := GetColor;
SetColor(settings.kleur);
SetFillStyle(solidFill,settings.kleur);
FillEllipse(x,y,size,size);
If not filled then
else
Begin
SetFillStyle(solidFill,Black);
FillEllipse(x,y,size-1,size-1);
End;
SetColor(oldcolor);
SetFillStyle(solidFill,oldcolor);
End;
{----------------------------------------------------------------------------}
Function Str2Graph(inp : shortstring;var output : GraphT): longint;
var
return : longint;
retdetail : Record
pcalc : smallint;
s2g : smallint;
end absolute return;
apart : stringStack;
postf : postft;
i : integer;
ts : shortstring;
tmpr : extended; {Temp real}
x,y,z : extended;
label cleanup;
Begin
x := 0;
y := 0;
z := 0;
i := 0;
retdetail.pcalc := 0;
retdetail.s2g := 0;
apart.clear;
postf.clear;
ts := '';
inp := uppercase(inp);
output.min := -99999;
output.max := 99999;
output.postfix.clear;
LogEvent('Processing: '+inp);
For i := 1 to length(inp) do
If inp[i] <> '|' then
ts := ts + inp[i]
else
Begin
Apart.push(ts);
ts := '';
End; {If / else / For}
Apart.push(ts);
{$IFDEF EXCEPT}
try
pcalcexp.string2postf(apart.items[1],postf);
except
end;
{$ELSE}
pcalcexp.string2postf(apart.items[1],postf);
{$ENDIF EXCEPT}
apart.delete(1);
retdetail.pcalc := pcalcexp.calcresult;
if (return <> 0) then {On fatal error}
Begin
LogEvent('Error processing '+inp);
GOTO cleanup;
End
else
LogEvent(inp+' converted to postfix');
output.postfix := postf;
Case (apart.count) of
0 : LogEvent('Domain not specified.');
2 :
Begin
LogEvent('Finding minimum value of domain');
{$IFDEF EXCEPT}
try
string2postf(apart.items[1],postf);
except
end;
{$ELSE}
string2postf(apart.items[1],postf);
{$ENDIF EXCEPT}
i := pcalcexp.calcresult;
if i = 0 then
begin
{$IFDEF EXCEPT}
try
tmpr := calcpostfix(postf,x,y,z);
except
end;
{$ELSE}
tmpr := calcpostfix(postf,x,y,z);
{$ENDIF EXCEPT}
If calcerror <> 0 then
Begin
LogEvent('Error finding minimum value of domain');
retdetail.s2g := calcresult {error in domain}
End
else
Begin
LogEvent('Found minimum value of domain');
output.min := tmpr;
End;
end else
LogEvent('Invalid minimum value specified');
if retdetail.pcalc = 0 then
Begin
LogEvent('Finding maximum value of domain');
{$IFDEF EXCEPT}
try
string2postf(apart.items[2],postf);
except
end;
{$ELSE}
string2postf(apart.items[2],postf);
{$ENDIF EXCEPT}
i := pcalcexp.calcresult;
if i = 0 then
begin
{$IFDEF EXCEPT}
try
tmpr := calcpostfix(postf,x,y,z);
except
end;
{$ELSE}
tmpr := calcpostfix(postf,x,y,z);
{$ENDIF EXCEPT}
If calcerror <> 0 then
Begin
LogEvent('Error finding maximum value of domain');
retdetail.s2g := calcresult {error in domain}
End
else
Begin
LogEvent('Found maximum value of domain');
output.max := tmpr;
End;
end else
LogEvent('Invalid maximum value specified');
End; {max calculation}
End;
else {case: if not 0 or 2}
retdetail.s2g := -1;
end;
CLEANUP:
str2graph := return;
End;
{----------------------------------------------------------------------------}
Function Num2Str(inp : extended) :string;
var out : string;
Begin
Str(inp:0:5,out);
num2str := out;
End;
{----------------------------------------------------------------------------}
Function Int2Str(inp : integer) :string;
var out : string;
Begin
Str(inp,out);
int2str := out;
End;
{----------------------------------------------------------------------------}
Function SafeRound(inp : extended) : longint;
Begin
If (inp < 2147483647) and (inp > -2147483647) then
SafeRound := Round(inp) else
If inp >= 2147483647 then SafeRound := 2147483647
else SafeRound := -2147483647;
End;
{----------------------------------------------------------------------------}
Function BuildString : shortstring;
Begin
{$IFDEF FPC}
{$IFDEF WIN32}
Buildstring := 'Free Pascal Win32 build';
{$ENDIF}
{$IFDEF GO32V2}
Buildstring := 'Free Pascal Go32v2 build';
{$ENDIF}
{$IFDEF LINUX}
Buildstring := 'Free Pascal Linux build';
{$ENDIF}
{$ENDIF}
{$IFDEF Ver70}
{$IFDEF WINDOWS}
Buildstring := 'Borland Pascal Windows build';
{$ENDIF}
{$IFDEF MSDOS}
Buildstring := 'Borland / Turbo Pascal Real Mode build';
{$ENDIF}
{$IFDEF DPMI}
Buildstring := 'Borland Pascal Protected mode build';
{$ENDIF}
{$ENDIF}
{$IFDEF DELPHI}
Buildstring := 'Borland Delphi build';
{$ENDIF}
End;
{----------------------------------------------------------------------------}
Function FileExists(fname : string) : boolean;
Var
lr : File;
ti : longint;
Begin
ti := filemode;
Filemode := 0;
{$I-}
Assign(lr,fname);
Reset(lr);{$I+}
{$I-}Close(lr);{$i+}
FileExists := (IOResult = 0);
filemode := ti;
End;
{----------------------------------------------------------------------------}
Function IDScriptLine(line : string) : CommandT;
var
ts : string;
posspace : integer;
Begin
posspace := Pos(' ',line);
If Posspace = 0 then
ts := UpperCase(line)
else
ts := UpperCase(Copy(line,1,posspace -1));
If (ts = 'C') then
IDScriptLine := setcolorl
else If (ts = 'CLS') then
IDScriptLine := cls
else If (ts = 'D') then
IDScriptLine := setdetail
else If (ts = 'L') then
IDScriptLine := setlinemode
else If (ts = 'S') then
IDScriptLine := setscale
else If (ts = 'X') then
IDScriptLine := setx
else If (ts = 'Y') then
IDScriptLine := sety
else If (ts = 'PX') then
IDScriptLine := plotx
else If (ts = 'P') or (ts = 'PY') then
IDScriptLine := ploty
else If (ts = 'PXD') then
IDScriptLine := plotxd
else If (ts = 'PYD') or (ts = 'PD') then
IDScriptLine := plotyd
else If (ts[1] = '#') or (ts[1] = ';') then
IDScriptLine := comment
else If (ts = 'DOT') then
IDScriptLine := putdotl
else If (ts = 'SAVE') then
IDScriptLine := savel
else If (ts = 'LOAD') then
IDScriptLine := loadl