21db0daa4e
Add support for reading and writing custom `Curves` attributes. This allows us to roundtrip Blender's Hair grooms containing UVs and other attribute data. Note that animated attribute values are not supported with this change. This will also address #120042 Pull Request: https://projects.blender.org/blender/blender/pulls/121928
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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* Adapted from the Blender Alembic importer implementation. Copyright 2016 Kévin Dietrich.
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* Modifications Copyright 2021 Tangent Animation. All rights reserved. */
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#pragma once
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#include "usd.hh"
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#include "usd_reader_geom.hh"
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#include <pxr/usd/usdGeom/basisCurves.h>
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struct Curves;
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namespace blender::bke {
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struct GeometrySet;
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class CurvesGeometry;
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} // namespace blender::bke
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namespace blender::io::usd {
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class USDCurvesReader : public USDGeomReader {
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protected:
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pxr::UsdGeomBasisCurves curve_prim_;
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Curves *curve_;
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public:
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USDCurvesReader(const pxr::UsdPrim &prim,
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const USDImportParams &import_params,
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const ImportSettings &settings)
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: USDGeomReader(prim, import_params, settings), curve_prim_(prim), curve_(nullptr)
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{
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}
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bool valid() const override
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{
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return bool(curve_prim_);
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}
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void create_object(Main *bmain, double motionSampleTime) override;
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void read_object_data(Main *bmain, double motionSampleTime) override;
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void read_curve_sample(Curves *curves_id, double motionSampleTime);
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void read_geometry(bke::GeometrySet &geometry_set,
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USDMeshReadParams params,
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const char **err_str) override;
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void read_custom_data(bke::CurvesGeometry &curves, const double motionSampleTime) const;
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};
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} // namespace blender::io::usd
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