%%%% sundl_02.txt
%%%% Created by Laurence D. Finston (LDF) Sun Oct  7 18:55:13 CEST 2007


%% * (1) Copyright and License.

%%%% This file is part of GNU 3DLDF, a package for three-dimensional drawing. 
%%%% Copyright (C) 2007, 2008, 2009, 2010, 2011, 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 the maintainer of 
%%%% GNU 3DLDF to send 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 
%%%% Kreuzbergring 41 
%%%% D-37075 Goettingen 
%%%% Germany 

%%%% Laurence.Finston@gmx.de 
 

%% * (1)

\input epsf 

\font\small=cmr8
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\def\leaderfill{\leaders\hbox to 1em{\hss.\hss}\hfill}

%% Uncomment for DIN A3 portrait.
\special{papersize=297mm, 420mm} %% DIN A3 Portrait
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\advance\voffset by 1in
\advance\hoffset by 1cm

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\def\epsfsize#1#2{#1}

%% ** (2)

%% *** (3) 

%% *** (3) 

\headline={\hfil}

\iftrue % \iffalse
\pageno=-1
%\pageno=0
\vbox to \vsize{%
\vskip.5cm
\centerline{Sundials 2}
\vskip\baselineskip
\centerline{Laurence D. Finston}
\vskip\baselineskip
\centerline{Last updated:  October 7, 2007}
\vskip2cm
%\centerline{\hskip.5cm\epsffile{sundl_02.0}}
\iftrue % \iffalse
{\small
\hsize=.75\hsize
%\hskip1cm
\vbox{\vskip2\baselineskip
This document is part of GNU 3DLDF, a package for three-dimensional
drawing.
\vskip\baselineskip

Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 The Free Software Foundation
\vskip\baselineskip

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. 
\vskip\baselineskip

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. 
\vskip\baselineskip

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.,\hfil\break
51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
\vskip\baselineskip

See the GNU Free Documentation License for the copying conditions 
that apply to this document.
\vskip\baselineskip

You should have received a copy of the GNU Free Documentation License 
along with GNU 3DLDF; if not, write to the Free Software 
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA}}
\fi

\vskip2cm

\begingroup
\parindent=0pt
\parskip=0pt
\advance\baselineskip by 2pt
\dimen0=15cm

\centerline{\bf Contents}
\vskip 2cm
\hbox to \dimen0{Projection onto Equatorial Plane (Same for Any Latitude)\leaderfill 1}
%%
%% Chicago
%%
\hbox to \dimen0{Latitude $41^\circ$ $54'$ N (Chicago, Illlinois, USA)\hfil}
\hbox to \dimen0{\hskip2em Perspective projection\leaderfill 2}
\hbox to \dimen0{\hskip2em Vertical Dial, Facing Due South\leaderfill 3}
\hbox to \dimen0{\hskip2em Horizontal Dial\leaderfill 4}
%%
%% London
%%
% latitude := 51.5777 %% London
\hbox to \dimen0{Latitude $51^\circ$ $30'$ $28''$ N (London, UK)\hfil}
\hbox to \dimen0{\hskip2em Perspective projection\leaderfill 5}
\hbox to \dimen0{\hskip2em Vertical Dial, Facing Due South\leaderfill 6}
\hbox to \dimen0{\hskip2em Horizontal Dial\leaderfill 7}
%%
%% Goettingen
%%
\hbox to \dimen0{Latitude $51^\circ$ $32'$ N (G{\"o}ttingen, Germany)\hfil}
\hbox to \dimen0{\hskip2em Perspective projection\leaderfill 8}
\hbox to \dimen0{\hskip2em Vertical Dial, Facing Due South\leaderfill 9}
\hbox to \dimen0{\hskip2em Horizontal Dial\leaderfill 10}
%%
\endgroup
\vss}
\vfil\eject
\fi

%% *** (3) 

%% **** (4) 

%\iftrue
\iffalse
\pageno=0

\vbox to \vsize{%
\vskip.5cm
\line{\hskip1cm\epsffile{sundl_02.0}\hss}
\vss
}
\vfil\eject
\fi

%% **** (4) 

\headline={Sundials 2\quad Copyright {\copyright} 2007, 2008, 2009, 2010, 2011, 2012, 2013 The Free Software Foundation\hfil %
   \folio\hfil Author:  Laurence D. Finston\hfil}
\pageno=1



\vbox to \vsize{%
\vskip2cm
\line{\hskip 2cm\epsffile{sundl_02.2}\hss}
\vskip2cm
\line{\hskip 2cm Parallel projection onto plane of equatorial dial %
      (plane of $c_0$, $r_0$ and $r_1$)\hfil}
\line{\hskip 2cm Same for any latitude\hfil}
\vss}
\vfil\eject


%% **** (4) Chicago

\vbox to \vsize{%
\vskip1cm
\centerline{{\bf Chicago, Illinois, USA} $41^\circ$ $54'$ N, $87^\circ$ $39'$ W\hfil}
\vskip1cm
\line{\hskip1cm\epsffile{sundl_02.5}\hss}
\vskip1cm
\line{\hskip 2cm{\bf Perspective projection}\hfil}
\line{\hskip 2cm Latitude $41^\circ$ $54'$ N (Chicago, Illinois, USA)\hfil}
\line{\hskip 2cm Focus:  $\rm{position} = (0, 5, -12)$, %
$\rm{direction} = (0, 5, 10)$, %
$\rm{distance} = 10$\hfil}
\line{\hskip 2cm (dimensions in centimeters)\hfil}
\vss
}

\vfil\eject


\vbox to \vsize{%
\vskip2cm
\centerline{{\bf Chicago, Illinois, USA} $41^\circ$ $54'$ N, $87^\circ$ $39'$ W\hfil}
\vskip1cm
\line{\hskip 2cm\epsffile{sundl_02.6}\hss}
\vskip2cm
\line{\hskip 2cm{\bf Parallel projection onto the vertical plane} (plane of $r_1$)\hfil}
\line{\hskip 2cm Vertical dial facing due south\hfil}
\line{\hskip 2cm Latitude $41^\circ$ $54'$ N (Chicago, Illinois, USA)\hfil}
\vss}
\vfil\eject

\vbox to \vsize{%
\vskip2cm
\centerline{{\bf Chicago, Illinois, USA} $41^\circ$ $54'$ N, $87^\circ$ $39'$ W\hfil}
\vskip1cm
\line{\hskip 0cm\epsffile{sundl_02.7}\hss}
\vskip2cm
\line{\hskip 2cm{\bf Parallel projection onto the horizontal plane} (plane of $r_6$)\hfil}
\line{\hskip 2cm Horizontal dial\hfil}
\line{\hskip 2cm Latitude $41^\circ$ $54'$ N (Chicago, Illinois, USA)\hfil}
\vss}
\vfil\eject

%% **** (4) London

\vbox to \vsize{%
\vskip1cm
\centerline{{\bf London, UK} $51^\circ$ $30'$ $28''$ N, $0^\circ$ $7'$ $41''$ W\hfil}
\vskip1cm
\line{\hskip1cm\epsffile{sundl_02.8}\hss}
\vskip1cm
\line{\hskip 2cm{\bf Perspective projection}\hfil}
\line{\hskip 2cm Latitude $51^\circ$ $30'$ $28''$ N (London, UK)\hfil}
\line{\hskip 2cm Focus:  $\rm{position} = (0, 5, -12)$, %
$\rm{direction} = (0, 5, 10)$, %
$\rm{distance} = 10$\hfil}
\line{\hskip 2cm (dimensions in centimeters)\hfil}
\vss
}

\vfil\eject


\vbox to \vsize{%
\vskip2cm
\centerline{{\bf London, UK} $51^\circ$ $30'$ $28''$ N, $0^\circ$ $7'$ $41''$ W\hfil}
\vskip1cm
\line{\hskip 2cm\epsffile{sundl_02.9}\hss}
\vskip2cm
\line{\hskip 2cm{\bf Parallel projection onto the vertical plane} (plane of $r_1$)\hfil}
\line{\hskip 2cm Vertical dial facing due south\hfil}
\line{\hskip 2cm Latitude $51^\circ$ $30'$ $28''$ N (London, UK)\hfil}
\vss}
\vfil\eject

\vbox to \vsize{%
\vskip2cm
\centerline{{\bf London, UK} $51^\circ$ $30'$ $28''$ N, $0^\circ$ $7'$ $41''$ W\hfil}
\vskip1cm
\line{\hskip 0cm\epsffile{sundl_02.10}\hss}
\vskip2cm
\line{\hskip 2cm{\bf Parallel projection onto the horizontal plane} (plane of $r_6$)\hfil}
\line{\hskip 2cm Horizontal dial\hfil}
\line{\hskip 2cm Latitude $51^\circ$ $30'$ $28''$ N (London, UK)\hfil}
\vss}
\vfil\eject

%% **** (4) Goettingen 51 deg. 32' N, 9 deg. 56' E

\vbox to \vsize{%
\vskip1cm
\centerline{{\bf G{\"o}ttingen, Germany} $51^\circ$ $32'$ N, $9^\circ$ $56'$ E\hfil}
\vskip1cm
\line{\hskip1cm\epsffile{sundl_02.1}\hss}
\vskip1cm
\line{\hskip 2cm{\bf Perspective projection}\hfil}
\line{\hskip 2cm Latitude $51^\circ$ $32'$ N (G{\"o}ttingen, Germany)\hfil}
\line{\hskip 2cm Focus:  $\rm{position} = (0, 5, -12)$, %
$\rm{direction} = (0, 5, 10)$, %
$\rm{distance} = 10$\hfil}
\line{\hskip 2cm (dimensions in centimeters)\hfil}
\vss
}

\vfil\eject

\vbox to \vsize{%
\vskip2cm
\centerline{{\bf G{\"o}ttingen, Germany} $51^\circ$ $32'$ N, $9^\circ$ $56'$ E\hfil}
\vskip1cm
\line{\hskip 2cm\epsffile{sundl_02.3}\hss}
\vskip2cm
\line{\hskip 2cm{\bf Parallel projection onto the vertical plane} (plane of $r_1$)\hfil}
\line{\hskip 2cm Vertical dial facing due south\hfil}
\line{\hskip 2cm Latitude $51^\circ$ $32'$ N (G{\"o}ttingen, Germany)\hfil}
\vss}
\vfil\eject

\vbox to \vsize{%
\vskip2cm
\centerline{{\bf G{\"o}ttingen, Germany} $51^\circ$ $32'$ N, $9^\circ$ $56'$ E\hfil}
\vskip1cm
\line{\hskip 0cm\epsffile{sundl_02.4}\hss}
\vskip2cm
\line{\hskip 2cm{\bf Parallel projection onto the horizontal plane} (plane of $r_6$).\hfil}
\line{\hskip 2cm Horizontal dial\hfil}
\line{\hskip 2cm Latitude $51^\circ$ $32'$ N (G{\"o}ttingen, Germany)\hfil}
\vss}
\vfil\eject

%% **** (4) End here.

\bye

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%% outline-regexp:"%% [*\f]+"
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