Vehicle Chassis No Visualisation

[juju]

Good morning,

I am having an issue with the chassis visualization. When I run the demos in the demos/vehicle/wheeled_models/ folder, the chassis is not displayed. However, I have checked the /data/vehicle/hmmwv folder, and the required files like hmmwv_chassis.mtl, hmmwv_chassis.obj, and hmmwv_chassis_col.obj are present.

What's particularly strange is that the demo_VSG_vehicles script in the demos/vsg folder renders the vehicle chassis for the HMMWV, sedan, etc., perfectly. However, when I try to create and display a HMMWV_Full object in my own program, either the chassis fails to render entirely, or, even worse, it appears distorted or deformed.

I know the chassis is being used by the physics engine, because in the demos/vehicle/wheeled_models/rollover demo, the chassis correctly collides with the ground when the HMMWV flips. It just doesn't appear visually.

Do you have any idea how to solve this issue?

Thank you for your help! 😊