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unit pdfvrsemantico;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, pdfvrlexico, fpvectorial;
type
{ AnSemantico }
AnSemantico = class
public
FPointSeparator, FCommaSeparator: TFormatSettings;
close_path_x: String;
close_path_y: String;
cm_a, cm_b, cm_c, cm_d, cm_e, cm_f: Real; // coordinate spaces constants
function StringToFloat(AStr: string): Double;
function generate(c: Command; AData: TvVectorialDocument): String;
function convert(x: String; y: String; Axis: Char): String;
function startMachine(): String;
function endMachine(): String;
constructor Create;
end;
implementation
{ PDF doesn't seam very consistent when it comes to using commas or
points as decimal separator, so we just try both }
function AnSemantico.StringToFloat(AStr: string): Double;
begin
if Pos('.', AStr) > 0 then Result := StrToFloat(AStr, FPointSeparator)
else Result := StrToFloat(AStr, FCommaSeparator);
end;
function AnSemantico.generate(c: Command; AData: TvVectorialDocument): String;
var
enter_line : String;
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.generate');
{$endif}
enter_line:= LineEnding; //chr(13) + chr(10); // CR and LF
if ((c.code = cc_H_CLOSE_PATH) or (c.code = cc_hS_CLOSE_AND_END_PATH)) then // command h or s
begin
c.cord_x:=close_path_x;
c.cord_y:=close_path_y;
end;
if ((c.code <> cc_H_CLOSE_PATH) and (c.code <> cc_hS_CLOSE_AND_END_PATH)) then // close path already converted
begin
if ((c.code = cc_m_START_PATH) or (c.code = cc_l_ADD_LINE_TO_PATH)) then
begin
//WriteLn(':: anSemantico.generate convert code ', Integer(c.code));
c.cord_x := convert(c.cord_x,c.cord_y,'x');
c.cord_y := convert(c.cord_x,c.cord_y,'y');
end;
if ((c.code = cc_c_BEZIER_TO_X_Y_USING_X2_Y2_AND_X3_Y3)) then
begin
//WriteLn(':: anSemantico.generate convert code ', Integer(c.code));
c.cord_x := convert(c.cord_x,c.cord_y,'x');
c.cord_y := convert(c.cord_x,c.cord_y,'y');
c.cord_x2 := convert(c.cord_x2,c.cord_y2,'x');
c.cord_y2 := convert(c.cord_x2,c.cord_y2,'y');
c.cord_x3 := convert(c.cord_x3,c.cord_y3,'x');
c.cord_y3 := convert(c.cord_x3,c.cord_y3,'y');
end;
end;
case c.code of
cc_m_START_PATH: // command m
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.generate Estado 1 EndPath StartPath');
{$endif}
// Result:='G01' + ' ' + 'X' + c.cord_x + ' ' + 'Y' + c.cord_y + enter_line +
// 'G01 Z50 // Abaixa a cabeça de gravação';
// Correcao para programas de desenho que geram um novo inicio no
// fim do desenho, terminamos qualquer desenho inacabado
AData.EndPath();
AData.StartPath(StringToFloat(c.cord_x), StringToFloat(c.cord_y));
close_path_x:=c.cord_x;
close_path_y:=c.cord_y;
end;
cc_l_ADD_LINE_TO_PATH: // command l
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.generate Estado 2 AddPointToPath');
{$endif}
// Result:='G01' + ' ' + 'X' + c.cord_x + ' ' + 'Y' + c.cord_y;
AData.AddLineToPath(StringToFloat(c.cord_x), StringToFloat(c.cord_y));
end;
cc_h_CLOSE_PATH: // command h
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.generate Estado 3 AddPointToPath');
{$endif}
//Result:='G01' + ' ' + 'X' + c.cord_x + ' ' + 'Y' + c.cord_y;
AData.AddLineToPath(StringToFloat(c.cord_x), StringToFloat(c.cord_y));
end;
cc_S_END_PATH: // command S
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.generate Estado 4 EndPath');
{$endif}
// Result:='G01 Z0 // Sobe a cabeça de gravação' + enter_line;
AData.EndPath();
end;
cc_hS_CLOSE_AND_END_PATH: // command s
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.generate Estado 5 AddPoint EndPath');
{$endif}
//Result:='G01' + ' ' + 'X' + c.cord_x + ' ' + 'Y' + c.cord_y + enter_line
// +'G01 Z0 // Sobe a cabeça de gravação' + enter_line;
AData.AddLineToPath(StringToFloat(c.cord_x), StringToFloat(c.cord_y));
AData.EndPath();
end;
cc_c_BEZIER_TO_X_Y_USING_X2_Y2_AND_X3_Y3: // command c
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.generate Estado 6 Bezier');
{$endif}
//Result:='G01' + ' ' + 'X' + c.cord_x + ' ' + 'Y' + c.cord_y + enter_line
// +'G01 Z0 // Sobe a cabeça de gravação' + enter_line;
AData.AddBezierToPath(
StringToFloat(c.cord_x3), StringToFloat(c.cord_y3),
StringToFloat(c.cord_x2), StringToFloat(c.cord_y2),
StringToFloat(c.cord_x), StringToFloat(c.cord_y)
);
end;
cc_CONCATENATE_MATRIX: // command cm
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.cc_CONCATENATE_MATRIX');
{$endif}
cm_a := StringToFloat(c.cord_x3);
cm_b := StringToFloat(c.cord_y3);
cm_c := StringToFloat(c.cord_x2);
cm_d := StringToFloat(c.cord_y2);
cm_e := StringToFloat(c.cord_x);
cm_f := StringToFloat(c.cord_y);
end;
cc_RESTORE_MATRIX: // command Q
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.cc_RESTORE_MATRIX');
{$endif}
cm_a:=1;
cm_b:=0;
cm_c:=0;
cm_d:=1;
cm_e:=0;
cm_f:=0;
end;
else
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.generate Estado ELSE');
{$endif}
Result:=c.my_operator;
end;
end;
function AnSemantico.convert(x: String; y: String; Axis: Char): String;
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.convert');
{$endif}
// convert from 1/72 inch to milimeters and change axis if necessary
if (Axis = 'y') then
begin
// y' = b * x + d * y + f
Result:=FloatToStr((cm_b*StringToFloat(x)+cm_d*StringToFloat(y)+cm_f)*(25.40/72));
end
else
// Axis = 'x'
begin
// x' = a * x + c * y + e
Result:=FloatToStr((cm_a*StringToFloat(x)+cm_c*StringToFloat(y)+cm_e)*(25.40/72));
end;
end;
function AnSemantico.startMachine(): String;
var
enter_line : String;
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.startMachine');
{$endif}
enter_line:=chr(13) + chr(10); // CR and LF
Result:='M216 // Ligar monitor de carga' + enter_line +
'G28 // Ir rapidamente para posição inicial' + enter_line +
'G00' + enter_line;
end;
function AnSemantico.endMachine(): String;
var
enter_line : String;
begin
{$ifdef FPVECTORIALDEBUG}
WriteLn(':> AnSemantico.endMachine');
{$endif}
enter_line:=chr(13) + chr(10); // CR and LF
Result:='M30 // Parar o programa e retornar para posição inicial' + enter_line +
'M215 // Desligar monitor de carga' + enter_line;
end;
constructor AnSemantico.Create;
begin
inherited Create;
cm_a:=1;
cm_b:=0;
cm_c:=0;
cm_d:=1;
cm_e:=0;
cm_f:=0;
// Format seetings to convert a string to a float
FPointSeparator := DefaultFormatSettings;
FPointSeparator.DecimalSeparator := '.';
FPointSeparator.ThousandSeparator := '#';// disable the thousand separator
FCommaSeparator := DefaultFormatSettings;
FCommaSeparator.DecimalSeparator := ',';
FCommaSeparator.ThousandSeparator := '#';// disable the thousand separator
end;
end.
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