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% Copyright 2005, 2006 by Palle Jorgensen
%
% This file 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 2 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.
%
% This is version 0.41 Tue Sep 26 2006 Dec
%
% The module is documentet in exteps.pdf
picture epspicture;
string extra_begineps; extra_begineps = "";
string extra_endeps; extra_endeps = "";
boolean extepsverbose; extepsverbose = true;
%% String handling tool
string string_split[];
def splitstring expr S =
begingroup
save __splitctr; numeric __splitctr; __splitctr = 0;
save __prevchar; string __prevchar, __currentchar; __prevchar = " ";
for i = 0 upto infinity:
__currentchar := substring(i, i+1) of S;
if (__currentchar = " ") and (__prevchar = " "):
relax;
elseif (__currentchar <> " ") and (__prevchar = " "):
string_split[__splitctr] := __currentchar;
elseif (__currentchar <> " ") and (__prevchar <> " "):
string_split[__splitctr] := string_split[__splitctr] & __currentchar;
elseif (__currentchar = " ") and (__prevchar <> " "):
__splitctr := __splitctr+1;
fi
__prevchar := __currentchar;
endfor
endgroup;
enddef;
%% End string handling tool
def begineps text F =
begingroup;
save file; string file; file = F;
save angle; numeric angle; angle = 0;
save clipping; boolean clipping; clipping = false;
save scale; pair scale; scale = (1,1);
save base; pair base; base = origin;
save __bbxfound; boolean __bbxfound; __bbxfound = false;
save grid; boolean grid; grid = false;
save gridstep; numeric gridstep; gridstep = 10;
save __base; pair __base;
save __eps__currentline; string __eps__currentline;
save __bbxline; string __bbxline;
save llx, lly, urx, ury; numeric llx, lly, urx, ury;
save pct; numeric pct;
save width; numeric width;
save height; numeric height;
save clippath; path clippath;
save largefile; boolean largefile; largefile = false;
save gridllx; numeric gridllx;
save gridlly; numeric gridlly;
save gridurx; numeric gridurx;
save gridury; numeric gridury;
%% Finding the bounding box
forever:
__eps__currentline := readfrom F;
if substring(0,14) of __eps__currentline = "%%BoundingBox:":
exitif __eps__currentline = EOF; % PATCH D. Roegel 23-sep-2006
__bbxline := substring(14, infinity) of __eps__currentline;
__bbxfound := true;
splitstring __bbxline;
llx = scantokens string_split[0];
lly = scantokens string_split[1];
urx = scantokens string_split[2];
ury = scantokens string_split[3];
fi
exitif __bbxfound;
endfor
if not __bbxfound:
message "Warning: No bounding box found.";
message " Setting bounding box to 0 0 1 1";
llx = lly = 0;
urx = ury = 1;
fi
closefrom F;
scantokens extra_begineps;
__base = -(llx,lly);
pct = (urx - llx)/100;
%% To ensure the right bounding box of the output file
%% a picture with the same size as the eps figure is added.
epspicture := nullpicture;
clippath = (0,0)--(0,ury-lly)--(urx-llx,ury-lly)--(urx-llx,0)--cycle;
setbounds epspicture to clippath;
enddef;
def endeps =
%% Calculating scale if width and/or height is known
if (known width) and (known height):
scale := (width/(urx - llx),height/(ury - lly));
elseif known width:
scale := (width/(urx - llx),width/(urx - llx));
elseif known height:
scale := (height/(ury - lly),height/(ury - lly));
fi
%% The graphics inclusion commands
special "gsave";
if base <> origin:
special decimal.xpart.base & " " & decimal.ypart.base & " translate";
fi
if angle <> 0:
special decimal angle & " rotate";
fi
if __base <> origin:
special decimal.xpart.__base & " " & decimal.ypart.__base & " translate";
fi
if scale <> (1,1):
epspicture := epspicture scaled xpart.scale
if xpart.scale <> ypart.scale:
yscaled (ypart.scale/xpart.scale)
fi;
special decimal xpart.scale & " " & decimal ypart.scale & " scale";
fi
if angle <> 0:
epspicture := epspicture rotatedaround(origin)(angle);
fi
%% Drawing the grid !! After the scaling :-)
if unknown gridllx:
gridllx = 0;
fi
if unknown gridlly:
gridlly = 0;
fi
if unknown gridurx:
gridurx = (urx - llx)/pct;
fi
if unknown gridury:
gridury = (ury - lly)/pct;
fi
if grid:
save __gridpicture; picture __gridpicture; __gridpicture := nullpicture;
for i = gridllx*pct step gridstep*pct until (epsilon + gridurx*pct):
addto __gridpicture doublepath (i*xpart.scale,gridlly*pct*ypart.scale)--(i*xpart.scale,gridury*pct*ypart.scale) withpen currentpen;
addto __gridpicture also thelabel.bot(((decimal.(i/pct) & "%") infont defaultfont) rotated -90, (i*xpart.scale,gridlly*pct*ypart.scale));
endfor
for i = gridlly*pct step gridstep*pct until (epsilon + gridury*pct):
addto __gridpicture doublepath (gridllx*pct*xpart.scale,i*ypart.scale)--(gridurx*pct*xpart.scale,i*ypart.scale) withpen currentpen;
addto __gridpicture also thelabel.lft(((decimal.(i/pct) & "%") infont defaultfont), (gridllx*pct*xpart.scale,i*ypart.scale));
endfor
if angle <> 0:
__gridpicture := __gridpicture rotatedaround(origin)(angle);
fi
addto epspicture also __gridpicture;
fi
if clipping:
save __clippath; path __clippath;
__clippath=clippath shifted (llx,lly);
special "newpath " & decimal.xpart.point 0 of __clippath
& " " & decimal.ypart.point 0 of __clippath & " moveto";
for i = 0 upto length.__clippath-1:
special decimal.xpart.postcontrol i of __clippath & " " &
decimal.ypart.postcontrol i of __clippath & " " &
decimal.xpart.precontrol (i+1) of __clippath & " " &
decimal.ypart.precontrol (i+1) of __clippath & " " &
decimal.xpart.point (i+1) of __clippath & " " &
decimal.ypart.point (i+1) of __clippath & " curveto";
endfor;
special "closepath clip";
fi
special "save";
special "userdict begin";
special "/showpage {} def";
special "%%BeginDocument: " & file;
if largefile:
special "%% MetaPost exteps large file->" & file;
if extepsverbose:
message "exteps notification: File " & file & " not inserted into " & jobname & "." & decimal.charcode;
message " Run 'delfin " & jobname & "." & decimal.charcode & "' to insert " & file;
message " This is caused by setting 'largefile:=true'";
message "";
fi
else:
if extepsverbose:
message "Inserting " & file & " into " & jobname & "." & decimal.charcode;
fi
forever:
__eps__currentline := readfrom file;
exitunless __eps__currentline <> EOF;
special __eps__currentline;
endfor
fi
special "%%EndDocument: " & file;
scantokens extra_endeps;
special "end restore";
special "grestore";
closefrom file;
if base <> (0,0):
epspicture := epspicture shifted base;
fi
addto currentpicture also epspicture;
endgroup;
enddef;
%% Special drawing commands
def epsfill expr c = addto epspicture contour c _op_ enddef;
def epsdraw expr p =
addto epspicture
if picture p:
also p
else:
doublepath p withpen currentpen
fi
_op_
enddef;
def epsfilldraw expr c =
addto epspicture contour c withpen currentpen
_op_ enddef;
def epsdrawdot expr z =
addto epspicture contour makepath currentpen shifted z
_op_ enddef;
def epslabel = epsdraw thelabel enddef;
endinput
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