3 \subsection{Direct definition
}
5 The object
\Lkeyword{line
} defines a
\Index{line
} (or a series of line
6 segments). We use the option
\Lkeyword{args
} to specify the points:
7 \texttt{[object=line,args=$A_0$ $A_1$
\ldots $A_n$
]}
9 We can also define a line that has been transformed using a
10 translation, a rotation, a homothety, etc., as though it were a
13 \begin{LTXexample
}[width=
7.5cm
]
14 \begin{pspicture
}(-
3,-
3)(
4,
3.5)
%
15 \psframe*
[linecolor=blue!
50](-
3,-
3)(
4,
3.5)
16 \psset{lightsrc=
50 20 20,viewpoint=
50 30 15,Decran=
60}
18 \psSolid[object=grille,
20 linewidth=
0.5\pslinewidth,linecolor=gray,
]
21 %% definition du plan de projection
25 base=-
3.2 3.2 -
2.2 2.2,
34 \psProjection[object=line,
37 \psProjection[object=line,
41 %% du code jps dans la definition
42 \psProjection[object=line,
43 definition=
{2 -
2 addv
} papply,
47 \axesIIID(
4,
2,
2)(
5,
4,
3)