60bc34b494
Adding support for converting between Blender custom properties and USD user-defined custom attributes. Custom attributes on Xforms, many data types, and materials are all supported for round-tripping. Please see the USD attributes documentation for more information on custom attributes. Properties are exported with a userProperties: namespace for simple filtering in external apps. This namespace is stripped on import, but other namespace are allowed to persist. An "Import Attributes" parameter has been added with options "None" (do not import attributes), "User" (import attributes in the 'userProperties' namespace only), "All custom" (import all USD custom attributes, the default). An "Export Custom Properties" export option has been added. The property conversion code handles float, double, string and bool types, as well as tuples of size 2, 3 and 4. Note that USD quaternions and arrays of arbitrary length are not yet supported. There is currently no attempt to set the Blender property subtype based on the USD type "role" (e.g., specifying Color or XYZ vector subtypes). This can be addressed in future work. In addition to exporting custom properties, the original Blender object and data names are now saved as USD custom string attributes "userProperties:blender:object_name" and "userProperties:blender:data_name", respectively, on the corresponding USD prims. This feature is enabled with the "Author Blender Name" export option. If a Blender custom string property is named "displayName", it's handled in a special way on export in that its value is used to set the USD prim's "displayName" metadata. Co-authored-by: kiki <charles@skeletalstudios.com> Co-authored-by: Michael Kowalski <makowalski@nvidia.com> Co-authored-by: Charles Wardlaw <kattkieru@users.noreply.github.com> Pull Request: https://projects.blender.org/blender/blender/pulls/118938
20 lines
542 B
C++
20 lines
542 B
C++
/* SPDX-FileCopyrightText: 2024 NVIDIA Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "usd.hh"
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#include <pxr/usd/usd/prim.h>
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#include "BKE_idprop.hh"
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namespace blender::io::usd {
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void set_id_props_from_prim(ID *id,
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const pxr::UsdPrim &prim,
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eUSDAttrImportMode attr_import_mode = USD_ATTR_IMPORT_ALL,
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pxr::UsdTimeCode time_code = pxr::UsdTimeCode::Default());
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} // namespace blender::io::usd
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