Agregar flechas en el diagrama paramétrico

Question

Hola, estoy intentando agregar las flechas rojas en las curvas. Tengo flechas en la línea con ArrowInside, pero en el gráfico paramétrico no pude conseguirlas.

\psset{arrowscale=2,ArrowFill=true}
\begin{pspicture}(-5,-4)(5,4)%\grilla
\psaxes[linewidth=1.1pt,labels=none,
ticks=none]{-}(0,0)(-4,-4)(4,4)[$x$,0][$y$,90]
\psset{algebraic,linewidth=1.3pt}

\foreach \expr in {SINH(t)|COSH(t),COSH(t)|SINH(t),SINH(t)|-COSH(t),-COSH(t)|SINH(t)}
{\psparametricplot[linewidth=1.3pt,ArrowInside=->>,ArrowInsideNo=2]{-2}{2}{\expr}}

\psline[linewidth=1.3pt, linewidth=1.3pt,ArrowInside=->>, ArrowInsideNo=2,ArrowInsideOffset=0.1](-4,-4)(0,0)
\psline[linewidth=1.3pt, linewidth=1.3pt,ArrowInside=->>, ArrowInsideNo=2,ArrowInsideOffset=0.1](4,4)(0,0)
\psline[linewidth=1.3pt, linewidth=1.3pt,ArrowInside=->>, ArrowInsideNo=2,ArrowInsideOffset=0.1](0,0)(4,-4)
\psline[linewidth=1.3pt, linewidth=1.3pt,ArrowInside=->>, ArrowInsideNo=2,ArrowInsideOffset=0.1](0,0)(-4,4)

\end{pspicture}

Answer 1

Mismo enfoque queaquí: volver a dibujar usando multido. Para que las flechas apunten a las direcciones deseadas, cambie SINH(t)|COSH(t)a -SINH(t)|COSH(t)y COSH(t)|SINH(t)a COSH(t)|-SINH(t).

\documentclass{standalone}
\usepackage{pstricks-add}

\begin{document}

\psset{arrowscale=2,ArrowFill=true}
\begin{pspicture}(-5,-5)(5,5)%\grilla
\psaxes[linewidth=1.1pt,labels=none,
ticks=none]{-}(0,0)(-4,-4)(4,4)[$x$,0][$y$,90]
\psset{algebraic,linewidth=1.3pt}

\foreach \expr in {-SINH(t)|COSH(t),COSH(t)|-SINH(t),SINH(t)|-COSH(t),-COSH(t)|SINH(t)}{
 \psparametricplot[linewidth=1.3pt]{-2}{2}{\expr}
 \multido{\n=-1+0.8}{4}{%
  \parametricplot[plotpoints=2,linecolor=red,linewidth=0.1pt,arrows=->,arrowscale=5]{\n}{\n\space 0.01 add}{\expr}
 }
}

\psline[linewidth=1.3pt, linewidth=1.3pt,ArrowInside=->>, ArrowInsideNo=2,ArrowInsideOffset=0.1](-4,-4)(0,0)
\psline[linewidth=1.3pt, linewidth=1.3pt,ArrowInside=->>, ArrowInsideNo=2,ArrowInsideOffset=0.1](4,4)(0,0)
\psline[linewidth=1.3pt, linewidth=1.3pt,ArrowInside=->>, ArrowInsideNo=2,ArrowInsideOffset=0.1](0,0)(4,-4)
\psline[linewidth=1.3pt, linewidth=1.3pt,ArrowInside=->>, ArrowInsideNo=2,ArrowInsideOffset=0.1](0,0)(-4,4)

\end{pspicture}

\end{document}

Rendimientos:

Es posible que desees cambiar \n=-1+0.8a otra cosa para mover las flechas a otra posición.