I see. That makes sense.
In fact, I intend to eventually combine the RigidTerrain and SCMTerrain classes 
(or maybe provide a convenience wrapper class) to allow creating a complex 
scene with a combination of rigid and SCM deformable patches.  Unfortunately, 
that is not completely straightforward and I do not have the bandwidth to work 
on it in the very near future. But soon, hopefully in a month or two.

--Radu

From: projectchrono@googlegroups.com <projectchrono@googlegroups.com> On Behalf 
Of yueminzhang
Sent: Friday, December 20, 2024 8:42 AM
To: ProjectChrono <projectchrono@googlegroups.com>
Subject: Re: [chrono] Help with SCMDeformableTerrain settings

Thank you for your explanation.

Actually, I want to stitch two different types of SCM terrain together(with 
different parameters). When the terrain is uneven, it may happen that one 
terrain is higher and another is lower. This causes vehicles running on the 
lower terrain to be unable to make contact with the ground because of the 
extended SCM terrain from the higher one. Therefore, I want to find a way to 
fix the issue. Is there any solutions?

On Saturday, November 30, 2024 at 6:09:34 PM UTC+8 Radu Serban wrote:
The SCM terrain itself extends to infinity in the x-y plane, beyond the patch 
that you used to initialize it. The height of the SCM terrain beyond these 
limits is equal to the height of the closes (x-y) point that was initialized.
In other words, what you call “the area outside the grids” is not rigid, but 
rather deformable SCM terrain.  It is simply not visualized (one could also 
automatically extend the visualization mesh as the vehicle moves beyond those 
limits, but that was not of interest to me when I implemented this code).

What I fail to understand is why this is an issue to you. Why would you want 
the rover to “fall off the terrain”?  Supposedly, you are interested in keeping 
the rover within the bounds you defined – that should be done through other 
means (control of the rover).

--Radu

From: projec...@googlegroups.com <projec...@googlegroups.com> On Behalf Of 
yueminzhang
Sent: Saturday, September 28, 2024 1:41 PM
To: ProjectChrono <projec...@googlegroups.com>
Subject: [chrono] Help with SCMDeformableTerrain settings

Hello,

I am recently running a demo using the SCM terrain, and find that when the 
terrain is initialized, the area outside the grids seemed to be solid. When I 
drove a viper outside the settled area, the viper wouldn't drop down. Is there 
any solutions to remove the mesh outside the visualized area?

Regards.

[https://groups.google.com/group/projectchrono/attach/27e251aac1477/image001.png?part=0.1&view=1]
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