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% halfcirclesfear
% L. Nobre G.
% 2001
input featpost3Dplus2D;
% input la3Dmacros;
verbatimtex
\documentclass{article}
\usepackage{beton}
\usepackage{concmath}
\usepackage{ccfonts}
\begin{document}
etex
beginfig(1);
color centre, axpin, axpon, axpun;
numeric size, radii;
f := (4,1.5,3.5);
size = 0.5;
radii = 1;
centre = (0,0,0);
axpin = (0,0,1);
axpon = (0,1,0);
axpun = (1,0,0);
cartaxes( 1.2,1.2,0.8 );
pickup pencircle scaled 2;
draw rigorouscircle( centre, axpin, radii ) withcolor red;
draw goodcirclepath( centre, axpin, radii );
draw spatialhalfcircle( centre, axpon, size, true );
draw spatialhalfcircle( centre, axpon, size, false ) dashed evenly;
draw spatialhalfcircle( centre, axpun, size, true );
draw spatialhalfcircle( centre, axpun, size, false ) dashed evenly;
draw rigorousfearpath( centre, size );
endfig;
verbatimtex
\end{document}
etex
end;
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