%% %% Ein Beispiel der DANTE-Edition %% %% 2. Auflage %% %% Beispiel 15-02-11 auf Seite 720. %% %% Copyright (C) 2016 Herbert Voss %% %% It may be distributed and/or modified under the conditions %% of the LaTeX Project Public License, either version 1.3 %% of this license or (at your option) any later version. %% %% See http://www.latex-project.org/lppl.txt for details. %% %% %% ==== % Show page(s) 1 %% defaultfont:="ptmr8r"; warningcheck:=0; % --- start of displayed preamble in the book --- % --- end of displayed preamble in the book --- % % beginfig(1) u:=1cm; pair A,AA,B,BB,C,D; A :=( 0.2u, 0.05u); AA :=(0.2u,-0.05u); B :=( u, 0.05u); BB :=( u,-0.05u); C :=(-0.02u, 0); D :=( -u, 0); path p; p:= B{up}..D{down}..BB{up}--AA{down}.. C{up}..A{down}--cycle; fill p withcolor 0.6*white; draw p withpen pencircle scaled 1.5bp withcolor 0.5*red; endfig; end;