[pstricks] [pst-solides3D] plan is not drawn

[Herbert Voss]

Am 07.05.18 um 17:21 schrieb Maxime Chupin:

> I do not understand why the plan in the following code is not drawn. 
> Any help?

>   \psSolid[object=new, fillcolor=red!20,
>   sommets=
>   -0.8 -0.2 0 0.8 -0.2 0 0 1 0 0 0.5 0.8,
>   faces={
>     [0 1 2] [1 2 3] [0 1 3] [0 3 2]},
>   % num=all,
>   action=none,name=tetra,
>   plansepare={[1 0 0 0]}]
>
> \psSolid[object=load,load=tetra0,fillcolor=red!20,action=draw**](0,0,0)
>
>   \psSolid[object=plan,
>   definition=equation,
>   name=monplan,
>   opacity= 0.7,
>   fillcolor=blue!20,
>   args={[1 0 0 0]},

with this value you are looking from behind to the plane, which has no
defined color. Use

     args={[-1 0 0 0]},

Or change the angles of the viewpoint.

Herbert

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