NCP-OUSD 試験問題を無料オンラインアクセス

When a user is trying to change the drawMode of an element to bounds, and it doesn't work, what should you look into?

• A.UsdShadeMaterialBindingAPI schema is applied and a material is bound.
• B.UsdVolVolume schema is applied and extents are correct.
• C.UsdPhysicsCollisionAPI schema is applied and extents are correct.
• D.Kinds and GeomModelAPI schema are properly applied.

Why is extract, transform, load (ETL) a useful design pattern for USD data exchange? Choose two.

• A.It helps preserve the integrity of the original data format while allowing tailoring for different use cases.
• B.It ensures that all OpenUSD workflows use a standardized data structure, regardless of the original format.
• C.It separates concerns, making it easier to maintain and adapt data exchange pipelines for different needs.
• D.It guarantees that all data converted to OpenUSD is lossless and identical to the original format.

Review the following code for creating 1000 sphere instances. When this code is executed, why will the authored prims not yield any instancing efficiencies?
for i in range(1000):
xform = UsdGeom.Xform.Define(stage, f"/test_{i}")
sphere_path = xform.GetPath().AppendPath("sphere")
UsdGeom.Sphere.Define(stage, sphere_path)
xform.GetPrim().SetInstanceable(True)
xform.AddTranslateOp().Set((i * 2, 0, 0))

• A.Every sphere has a different position so the instanceable metadata is ignored.
• B.You must also call Usd.Prim.SetInstanceable(True) for each sphere prim that is created.
• C.There are no composition arcs so the instanceable metadata is ignored.

In OpenUSD, when composing a stage, why might opinions from one layer not take effect in the final composed stage?

• A.The layer containing the opinion has a lower strength than other layers, and its changes are overridden.
• B.The opinions are in a non-editable layer that does not allow modifications during composition.
• C.The layer containing the opinion does not use the correct schema for the data.
• D.The layer is not referenced properly, so its opinions are ignored.

Another department at your company has provided layer1.usda that has a Sphere Gprim with animated timeValues that translate the sphere along the Y-axis:
#usda 1.0
(
endTimeCode = 60
startTimeCode = 1
)
def Xform "Asset"
{
def Sphere "Sphere"
{
double3 xformOp:translate.timeSamples = {
1: (0, 5.0, 0)
30: (0, -5.0, 0)
60: (0, 5.0, 0)
}
uniform token[] xformOpOrder = ["xformOp:translate"]
}
}
You've been given rootLayer.usda that references Sphere from layer1.usda as follows:
#usda 1.0
(
endTimeCode = 60
startTimeCode = 1
)
def Xform "World"
{
def Sphere "Sphere" (
prepend references = @./layer1.usda@ < /Asset/Sphere >
)
{
}
}
For testing purposes, you want to check what Sphere would look like if it was at (0, -5.0, 0) at timeCode = 45.
Which of the following changes in rootLayer.usda would place Sphere at -5.0 in the Y-axis at timeCode 45?
Note that it is okay if the position of Sphere at other timeCodes is changed. Choose two.

• A.Add a 15 timeCode frame layer offset to the Sphere reference:
  def Sphere "Sphere" (
  prepend references = @./layer1.usda@ < /Asset/Sphere > (offset = 15)
  )
  {
  }
• B.Add a (0, -5, 0) translate xformOp timeValue to "World" at timeCode 45:
  def Xform "World"
  {
  double3 xformOp:translate.timeSamples = {
  45: (0, -5.0, 0),
  }
  uniform token[] xformOpOrder = ["xformOp:translate"]
  }
• C.Change the layer metadata endTimeCode from 60 to 45:
  #usda 1.0
  (
  endTimeCode = 45
  startTimeCode = 1
  )
• D.Add the following xformOp overrides to "Sphere":
  double3 xformOp:translate.timeSamples = {
  1: (0, 5.0, 0),
  30: (0, -2.5, 0),
  60: (0, -5.0, 0)
  }
  uniform token[] xformOpOrder = ["xformOp:translate"]