static-collider#

Code

RB.COL.002

Validator

Compatibility

openusd

Tags

✅

Summary#

If an asset is expected to be static (no movement happens), it can not contain a rigid body, only a Collider body.

Description#

The UsdPhysicsCollisionAPI defines collisions only. The collisions will be considered “static collisions” (without movement), if the UsdPhysicsRigidBodyAPI is not present.

Why is it required?#

  • If an asset should act as a collider, but it is not expected to move during simulation, it cannot have UsdPhysicsRigidBodyAPI applied.

Examples#

# Invalid: Collision that should be static but includes a rigid body API
def Cube "cube" (
   prepend apiSchemas = ["PhysicsRigidBodyAPI", "PhysicsCollisionAPI"]
) {
}

# Valid: Static collision
def Cube "cube" (
   prepend apiSchemas = ["PhysicsCollisionAPI"]
) {
}

How to comply#

The UsdPhysicsCollisionAPI schema has to be applied to a UsdGeomGPrim, but that prim or any of its parent prims cannot also have the UsdPhysicsRigidBodyAPI applied.

For More Information#