%% bldelem4.ldf
%% Created by Laurence D. Finston (LDF) Wed Jun 20 13:15:08 CEST 2012

%% * (1) Copyright and License.

%%%% This file is part of GNU 3DLDF, a package for three-dimensional drawing.  
%%%% Copyright (C) 2012, 2013 The Free Software Foundation  

%%%% GNU 3DLDF 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.  

%%%% GNU 3DLDF 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 GNU 3DLDF; if not, write to the Free Software 
%%%% Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA 

%%%% GNU 3DLDF is a GNU package.  
%%%% It is part of the GNU Project of the  
%%%% Free Software Foundation 
%%%% and is published under the GNU General Public License. 
%%%% See the website http://www.gnu.org 
%%%% for more information.   
%%%% GNU 3DLDF is available for downloading from 
%%%% http://www.gnu.org/software/3dldf/LDF.html.

%%%% Please send bug reports to Laurence.Finston@gmx.de
%%%% The mailing list help-3dldf@gnu.org is available for people to 
%%%% ask other users for help.  
%%%% The mailing list info-3dldf@gnu.org is for sending 
%%%% announcements to users. To subscribe to these mailing lists, send an 
%%%% email with ``subscribe <email-address>'' as the subject.  

%%%% The author can be contacted at: 

%%%% Laurence D. Finston 
%%%% c/o Free Software Foundation, Inc. 
%%%% 51 Franklin St, Fifth Floor 
%%%% Boston, MA  02110-1301  
%%%% USA

%%%% Laurence.Finston@gmx.de
 


%% Created:       July 4, 2012
%% Last updated:  July 4, 2012

%% Run like this:

%% 3dldf bldelem4.ldf 
%% mpost bldelem4.mp 
%% tex bldelem4.txt 
%% dvips -o bldelem4.ps bldelem4.dvi
%% ps2pdf bldelem4.ps

%% All on one line:
if false:
3dldf bldelem4.ldf && mpost bldelem4.mp && tex bldelem4.txt && \
dvips -o bldelem4.ps bldelem4.dvi \
&& ps2pdf bldelem4.ps
fi;

%% View the PostScript file using Ghostview like this:
%% gv bldelem4.ps &
%% or with GNU Ghostview like this:
%% ggv bldelem4.ps &

%% View the PDF file with Acrobat Reader like this:
%% acroread bldelem4.pdf &

%% * (1) Pyramids

%% * (1) Beginning of 3DLDF code.

input "bldelem1.lmc";
input "bldelem3.lmc";

%% * (1) Declarations

picture v;
picture w;

focus f[];

set f0 with_position (-20, 10, -50) 
       with_direction (-20, 10, 10) with_distance 60; 


boolean do_testing;

numeric diameter_two;

numeric ZERO;
ZERO := 0;

%% Figure 0 must be generated.

beginfig(0);
   drawdot origin;
endfig with_projection parallel_x_y no_sort;

picture u;
picture v;
picture w;
picture text_picture;
picture dbl_tab_picture;

%% *** (3) Triangular bases

%% sides
%% base diameter
%% height (non-truncated)
%% height of lower section (truncated)
%% height of upper section (obelisk) --- used when called by macro `obelisk', never
%%                                       when called directly
%% crosshair counter A
%% crosshair counter B
%% do_guidelines (not used in macro as of 2012.07.04.)
%% do_labels

j := 1;

for i = 1 upto 5:

   pyramid (u, v, w, text_picture, dbl_tab_picture, diameter_two, ZERO, ZERO) 
           {3, 1, j, 0, 0, 5, 0, true, false};

   beginfig(i);
      current_picture := u;
   endfig with_focus f0 no_sort;

   beginfig(1000 + i);
      current_picture += v;
   endfig with_projection parallel_x_y no_sort;

   beginfig(2000 + i);
      current_picture += w;
   endfig with_projection parallel_x_y no_sort;

   beginfig(3000 + i);
      current_picture += text_picture;
   endfig with_projection parallel_x_y no_sort;

   beginfig(4000 + i);
      current_picture += dbl_tab_picture;
   endfig with_projection parallel_x_y no_sort;

   %endfig with_projection parallel_x_z no_sort;

   clear u;
   clear v;
   clear w;
   clear text_picture;
   clear dbl_tab_picture;

   j += .5;

endfor;

j := 1;

for i = 6 upto 14:

   pyramid (u, v, w, text_picture, dbl_tab_picture, diameter_two, ZERO, ZERO) 
           {3, 1.5, j, 0, 0, 5, 0, true, false};

   beginfig(i);
      current_picture := u;
   endfig with_focus f0 no_sort;

   beginfig(1000 + i);
      current_picture += v;
   endfig with_projection parallel_x_y no_sort;

   beginfig(2000 + i);
      current_picture += w;
   endfig with_projection parallel_x_y no_sort;

   beginfig(3000 + i);
      current_picture += text_picture;
   endfig with_projection parallel_x_y no_sort;

   beginfig(4000 + i);
      current_picture += dbl_tab_picture;
   endfig with_projection parallel_x_y no_sort;

   %endfig with_projection parallel_x_z no_sort;

   clear u;
   clear v;
   clear w;
   clear text_picture;
   clear dbl_tab_picture;

   j += .5;

endfor;


%% ** (2)

verbatim_metapost "end";

end;

%% ** (2) 

%% * (1) Emacs-Lisp code for use in indirect buffers when using the          
%%   	 GNU Emacs editor.  The local variable list is not evaluated when an 
%%   	 indirect buffer is visited, so it's necessary to evaluate the       
%%   	 following s-expression in order to use the facilities normally      
%%   	 accessed via the local variables list.                              
%%   	 \initials{LDF 2004.02.12}.                                          

%% (progn (metafont-mode) (outline-minor-mode t) (setq fill-column 80))    

%% * (1) Local variables for Emacs.

%% Local Variables:
%% mode:Metafont
%% eval:(outline-minor-mode t)
%% eval:(read-abbrev-file abbrev-file-name)
%% outline-regexp:"%% [*\f]+"
%% eval:(set-register ?c "bldelem4.ldf")
%% eval:(set-register ?. "bldelem4.txt")
%% End: