public static void TraverseTest()
{
//
// Setup a stage with parents and children.
// TODO: Add tests with classes and instancing.
//
UsdStage s = UsdStage.CreateInMemory();
var foo = s.DefinePrim(new SdfPath("/Foo"));
s.DefinePrim(new SdfPath("/Foo/P1"));
s.DefinePrim(new SdfPath("/Foo/P2"));
s.DefinePrim(new SdfPath("/Foo/P3"));
s.DefinePrim(new SdfPath("/Foo/P4"));
s.DefinePrim(new SdfPath("/Foo/P5"));
var bar = s.DefinePrim(new SdfPath("/Bar"));
s.DefinePrim(new SdfPath("/Bar/B1"));
s.DefinePrim(new SdfPath("/Bar/B2"));
s.DefinePrim(new SdfPath("/Bar/B3"));
s.DefinePrim(new SdfPath("/Bar/B3/C1"));
s.DefinePrim(new SdfPath("/Bar/B3/C2"));
s.DefinePrim(new SdfPath("/Bar/B3/C3"));
s.DefinePrim(new SdfPath("/Bar/B4"));
// Prim children
Console.WriteLine("");
Console.WriteLine("Foo children:");
foreach (UsdPrim curPrim in foo.GetChildren())
{
Console.WriteLine(curPrim.GetPath());
}
Console.WriteLine("");
Console.WriteLine("Bar children:");
foreach (UsdPrim curPrim in bar.GetChildren())
{
Console.WriteLine(curPrim.GetPath());
}
// Prim Descendants
Console.WriteLine("");
Console.WriteLine("Bar descendants:");
foreach (UsdPrim curPrim in bar.GetDescendants())
{
Console.WriteLine(curPrim.GetPath());
}
// Basic Stage traversal.
Console.WriteLine("");
Console.WriteLine("All Prims:");
List <UsdPrim> primList = s.Traverse().ToList();
int i = 0;
foreach (UsdPrim curPrim in s.Traverse())
{
Console.WriteLine(curPrim.GetPath());
AssertEqual(primList[i++], curPrim);
}
// Traversal with child pruning.
Console.WriteLine("");
Console.WriteLine("/Bar children pruned:");
var range = new USD.NET.RangeIterator(s.Traverse());
foreach (UsdPrim curPrim in range)
{
Console.WriteLine(curPrim.GetPath());
if (curPrim.GetPath() == "/Bar/B3")
{
range.PruneChildren();
Console.WriteLine("pruned.");
}
}
// Fully general pre/post traversal.
Console.WriteLine("");
Console.WriteLine("Pre/Post Traversal with all children pruned:");
var prePostRange = new USD.NET.RangeIterator(UsdPrimRange.PreAndPostVisit(s.GetPseudoRoot()));
bool[] expected = { false, false, true, false, true, true };
bool[] actual = new bool[6];
i = 0;
foreach (UsdPrim curPrim in prePostRange)
{
Console.WriteLine("IsPostVisit: " + prePostRange.IsPostVisit().ToString()
+ ", " + curPrim.GetPath());
if (!prePostRange.IsPostVisit() && i > 0)
{
// It's only valid to prune on the pre-traversal.
prePostRange.PruneChildren();
}
actual[i++] = prePostRange.IsPostVisit();
}
AssertEqual(expected, actual);
}