Silhouette for Viewport Displays?

[Bogdan_Chipara]

Is there any (scripted) way to make the Silhouette of an object visible, without extracting it with Silhouette command? So each time I turn an object I see the silhouette lines adapting in real time.

much like blender’s orange silhouette when an object is selected:

Thank you!

[Gijs (Gijs de Zwart)]

Pen mode does this (and other technical display modes can do this). Here with modified silhouette color:

[Bogdan_Chipara]

yes, it looks good but aparently there’s no way to SetObjectDisplayMode to Pen while the Viewport Display is set to someting else such as Arctic.

[Gijs (Gijs de Zwart)]

Technical and ‘normal’ display modes are not fully compatible AFAIK.
Technical, Pen, Artistic, Monochrome belong to the same group.

[Bogdan_Chipara]

But is there any way to switch on and off this Silhouette no matter the display mode?
I guess it has to be something in the RhinoCommon, but I don’t know.

[Bogdan_Chipara]

Oh, and by the way there are differences between what Pen does and what Silhouette does.

Here’s an example, on an open polysurface.

Pen Display mode shows the middle edges:

Silhouette extracts only the perimeter edges: