corrective-transforms#
Code |
UN.004 |
|---|---|
Version |
1.0.0 |
Validator |
|
Compatibility |
core-usd |
Tags |
✅ |
Summary#
Must apply corrective transforms for different units
Description#
When composing assets with different linear units, corrective transformations must be applied to ensure correct scaling.
Why is it required?#
Prevents incorrect scaling when composing assets
Examples#
Invalid: No corrective transform for different units#
#usda 1.0
(
metersPerUnit = 0.01 # Stage in centimeters
)
def Xform "Reference" (
references = @asset_in_meters.usd@ # Asset in meters
)
{
}
Valid: Compensating transform applied#
#usda 1.0
(
metersPerUnit = 0.01 # Stage in centimeters
)
def Xform "Reference" (
references = @asset_in_meters.usd@ # Asset in meters
)
{
double3 xformOp:scale = (100, 100, 100)
uniform token[] xformOpOrder = ["xformOp:scale"]
}
How to comply#
Manually apply appropriate scale transformations
In Omniverse, use the Stage Metrics Extension or Edit Stage Metrics Operation in Omniverse Scene Optimizer