How to draw flat opaque closed polygons in 3D

[QuijoteMx]

Hi!

I need to draw flat opaque closed polygons on a 3D graph. They are square polygons not parallel to any of the cartesian planes.
Till now, I know how to draw flat opaque closed polygons paralell to one of the cartesian planes using on after_draw method of tchart control and the correspondant canvas method for every one of the planes.

But, what about tilted planes? Is it posible?

Thanks in advance ...

O. Molina

[Yeray]

Hello,

Isn't this the same you asked for here?