Add initial implementation of usdSemantics

pxr/usd/CMakeLists.txt

@@ -15,6 +15,7 @@ set(DIRS
     usdRender
     usdHydra
     usdRi
+    usdSemantics
     usdSkel
     usdUI
     usdUtils

pxr/usd/usdSemantics/CMakeLists.txt

@@ -0,0 +1,54 @@
+set(PXR_PREFIX pxr/usd)
+set(PXR_PACKAGE usdSemantics)
+
+pxr_library(usdSemantics
+    LIBRARIES
+        tf
+        vt
+        usd
+
+    PUBLIC_CLASSES
+        labelsAPI
+        labelsQuery
+        tokens
+
+    PUBLIC_HEADERS
+        api.h
+
+    PYTHON_CPPFILES
+        moduleDeps.cpp
+
+    PYMODULE_CPPFILES
+        module.cpp
+        wrapLabelsAPI.cpp
+        wrapLabelsQuery.cpp
+        wrapTokens.cpp
+
+    PYMODULE_FILES
+        __init__.py
+
+    RESOURCE_FILES
+        plugInfo.json
+        generatedSchema.usda
+        schema.usda:usdSemantics/schema.usda
+
+    DOXYGEN_FILES
+        overview.md
+)
+
+pxr_test_scripts(
+    testenv/testUsdSemanticsLabelsAPI.py
+    testenv/testUsdSemanticsLabelsQuery.py
+)
+
+pxr_register_test(testUsdSemanticsLabelsAPI
+    PYTHON
+    COMMAND "${CMAKE_INSTALL_PREFIX}/tests/testUsdSemanticsLabelsAPI"
+    EXPECTED_RETURN_CODE 0
+)
+
+pxr_register_test(testUsdSemanticsQuery
+    PYTHON
+    COMMAND "${CMAKE_INSTALL_PREFIX}/tests/testUsdSemanticsLabelsQuery"
+    EXPECTED_RETURN_CODE 0
+)

pxr/usd/usdSemantics/__init__.py

@@ -0,0 +1,27 @@
+#
+# Copyright 2024 Pixar
+#
+# Licensed under the Apache License, Version 2.0 (the "Apache License")
+# with the following modification; you may not use this file except in
+# compliance with the Apache License and the following modification to it:
+# Section 6. Trademarks. is deleted and replaced with:
+#
+# 6. Trademarks. This License does not grant permission to use the trade
+#    names, trademarks, service marks, or product names of the Licensor
+#    and its affiliates, except as required to comply with Section 4(c) of
+#    the License and to reproduce the content of the NOTICE file.
+#
+# You may obtain a copy of the Apache License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the Apache License with the above modification is
+# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the Apache License for the specific
+# language governing permissions and limitations under the Apache License.
+#
+
+from pxr import Tf
+Tf.PreparePythonModule()
+del Tf

pxr/usd/usdSemantics/api.h

@@ -0,0 +1,30 @@
+//
+// Copyright 2017 Pixar
+//
+// Licensed under the terms set forth in the LICENSE.txt file available at
+// https://openusd.org/license.
+//
+#ifndef USDSEMANTICS_API_H
+#define USDSEMANTICS_API_H
+
+#include "pxr/base/arch/export.h"
+
+#if defined(PXR_STATIC)
+#   define USDSEMANTICS_API
+#   define USDSEMANTICS_API_TEMPLATE_CLASS(...)
+#   define USDSEMANTICS_API_TEMPLATE_STRUCT(...)
+#   define USDSEMANTICS_LOCAL
+#else
+#   if defined(USDSEMANTICS_EXPORTS)
+#       define USDSEMANTICS_API ARCH_EXPORT
+#       define USDSEMANTICS_API_TEMPLATE_CLASS(...) ARCH_EXPORT_TEMPLATE(class, __VA_ARGS__)
+#       define USDSEMANTICS_API_TEMPLATE_STRUCT(...) ARCH_EXPORT_TEMPLATE(struct, __VA_ARGS__)
+#   else
+#       define USDSEMANTICS_API ARCH_IMPORT
+#       define USDSEMANTICS_API_TEMPLATE_CLASS(...) ARCH_IMPORT_TEMPLATE(class, __VA_ARGS__)
+#       define USDSEMANTICS_API_TEMPLATE_STRUCT(...) ARCH_IMPORT_TEMPLATE(struct, __VA_ARGS__)
+#   endif
+#   define USDSEMANTICS_LOCAL ARCH_HIDDEN
+#endif
+
+#endif

pxr/usd/usdSemantics/generatedSchema.usda

@@ -0,0 +1,17 @@
+#usda 1.0
+(
+    "WARNING: THIS FILE IS GENERATED BY usdGenSchema.  DO NOT EDIT."
+)
+
+class "SemanticsLabelsAPI" (
+    doc = """Applied set of labels for a prim for a taxonomy specified by the
+    schema's instance name. 
+
+    See UsdSemanticsLabelsQuery for computing inherited semantics."""
+)
+{
+    token[] semantics:labels:__INSTANCE_NAME__ = [] (
+        doc = "The set of labels specified at this prim."
+    )
+}
+