How is it possible to add a schema for ar to a usd file using the python tools (or any other way).
Following the instructions in: https://developer.apple.com/documentation/arkit/arkit_in_ios/usdz_schemas_for_ar/actions_and_triggers/preliminary_behavior
The steps are to have the following declaration:
class Preliminary_Behavior "Preliminary_Behavior" (
inherits = </Typed>
)
and a usd file
#usda 1.0
def Preliminary_Behavior "TapAndFlip"
{
rel triggers = [ <Tap> ]
rel actions = [ <Entry> ]
def Preliminary_Trigger "Tap" ( inherits = </TapGestureTrigger> )
{
rel affectedObjects = [ </Cube> ]
}
def Preliminary_Action "Entry" ( inherits = </GroupAction> )
{
uniform token type = "parallel"
rel actions = [ <Flip> ]
}
def Preliminary_Action "Flip" ( inherits = </EmphasizeAction> )
{
rel affectedObjects = [ </Cube> ]
uniform token motionType = "flip"
}
}
def Cube "Cube" { }
How do these parts fit together? I saved the usda file, but it didn't have any interactions. Obviously, I have to add that declaration, but how do I do this? is this all in an AR Xcode project? Or can I do this with python tools (I would prefer something very lightweight).