material-time#
Code |
NVM.006 |
|---|---|
Validator |
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Compatibility |
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Tags |
Summary#
Properties must not be time-varying
Description#
Non-visual material attributes must not contain time samples. These attributes should have static values that don’t change over time, as sensor simulation typically requires consistent material properties.
Why is it required?#
Ensures consistent sensor simulation behavior
Prevents unexpected changes in material properties during simulation
Required for non-visual sensor compatibility
Examples#
# Invalid: Time-varying non-visual attributes
def Material "TimeVaryingMaterial" {
token outputs:surface.connect = </TimeVaryingMaterial/Surface.outputs:surface>
token omni:simready:nonvisual:base = "steel"
token omni:simready:nonvisual:coating = "paint"
token[] omni:simready:nonvisual:attributes = ["emissive"]
# Invalid: Time-varying attributes
token omni:simready:nonvisual:base.timeSamples = {
0: "steel",
1: "plastic", # This will cause validation failure
2: "glass"
}
}
# Valid: Static non-visual attributes
def Material "StaticMaterial" {
token outputs:surface.connect = </StaticMaterial/Surface.outputs:surface>
token omni:simready:nonvisual:base = "steel"
token omni:simready:nonvisual:coating = "paint"
token[] omni:simready:nonvisual:attributes = ["emissive"]
# All attributes have static values - no time samples
}
How to comply#
Ensure that all non-visual material attributes (omni:simready:nonvisual:base, omni:simready:nonvisual:coating, omni:simready:nonvisual:attributes) have static values without time samples.