e9a21cf14c
- Use const in more places - Use more appropriate headers and forward decls elsewhere - Remove one instance of variable shadowing - Rename an internal rna enum list and the USD operator property object to follow surrounding code and naming guidelines Pull Request: https://projects.blender.org/blender/blender/pulls/136112
82 lines
2.1 KiB
C++
82 lines
2.1 KiB
C++
/* SPDX-FileCopyrightText: 2021 Tangent Animation. All rights reserved.
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* 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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*
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* Adapted from the Blender Alembic importer implementation. */
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#pragma once
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#include "usd.hh"
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#include "usd_reader_prim.hh"
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/* For #UsdGeomXformable. */
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#include <pxr/usd/usdGeom/xformable.h>
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struct Main;
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namespace blender::io::usd {
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/**
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* A transformation matrix and a boolean indicating
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* whether the matrix is constant over time.
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*/
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using XformResult = std::tuple<pxr::GfMatrix4f, bool>;
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class USDXformReader : public USDPrimReader {
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private:
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bool use_parent_xform_ = false;
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/* Indicates if the created object is the root of a
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* transform hierarchy. */
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bool is_root_xform_;
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public:
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USDXformReader(const pxr::UsdPrim &prim,
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const USDImportParams &import_params,
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const ImportSettings &settings)
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: USDPrimReader(prim, import_params, settings), is_root_xform_(is_root_xform_prim())
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{
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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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pxr::SdfPath object_prim_path() const override;
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void read_matrix(float r_mat[4][4], float time, float scale, bool *r_is_constant) const;
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bool use_parent_xform() const
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{
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return use_parent_xform_;
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}
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void set_use_parent_xform(bool flag)
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{
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use_parent_xform_ = flag;
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is_root_xform_ = is_root_xform_prim();
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}
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bool prim_has_xform_ops() const;
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protected:
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/* Returns true if the contained USD prim is the root of a transform hierarchy. */
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bool is_root_xform_prim() const;
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/**
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* Return the USD prim's local transformation.
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*
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* \param time: Time code for evaluating the transform.
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*
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* \return Optional tuple with the following elements:
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* - The transform matrix.
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* - A boolean flag indicating whether the matrix
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* is constant over time.
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*/
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virtual std::optional<XformResult> get_local_usd_xform(float time) const;
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private:
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pxr::UsdGeomXformable get_xformable() const;
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};
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} // namespace blender::io::usd
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