ce3dd12371
Add support for volume (OpenVDB) USD export: - Allows to export both static and animated volumes. - Supports volumes that have OpenVDB data from files or are generated in Blender with 'Mesh to Volume' modifier. - For volumes that have generated data in Blender it also exports corresponding .vdb files. Those files are saved in a new folder named "volumes". - Slightly changes the USD export UI panel. "Relative Texture Paths" becomes "Relative Paths" (and has separate UI box) as the functionality will now apply to both textures and volumes. Disabling of this option due to "Materials" checkbox being turned off has been removed. Reviewed By: sybren, makowalski Differential Revision: https://developer.blender.org/D14193 Manifest Task: T95407
150 lines
4.0 KiB
C++
150 lines
4.0 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2019 Blender Foundation. All rights reserved. */
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#include "usd.h"
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#include "usd_hierarchy_iterator.h"
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#include "usd_writer_abstract.h"
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#include "usd_writer_camera.h"
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#include "usd_writer_hair.h"
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#include "usd_writer_light.h"
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#include "usd_writer_mesh.h"
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#include "usd_writer_metaball.h"
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#include "usd_writer_transform.h"
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#include "usd_writer_volume.h"
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#include <string>
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#include <pxr/base/tf/stringUtils.h>
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#include "BKE_duplilist.h"
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#include "BLI_assert.h"
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#include "BLI_utildefines.h"
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#include "DEG_depsgraph_query.h"
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#include "DNA_ID.h"
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#include "DNA_layer_types.h"
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#include "DNA_object_types.h"
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namespace blender::io::usd {
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USDHierarchyIterator::USDHierarchyIterator(Main *bmain,
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Depsgraph *depsgraph,
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pxr::UsdStageRefPtr stage,
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const USDExportParams ¶ms)
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: AbstractHierarchyIterator(bmain, depsgraph), stage_(stage), params_(params)
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{
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}
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bool USDHierarchyIterator::mark_as_weak_export(const Object *object) const
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{
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if (params_.selected_objects_only && (object->base_flag & BASE_SELECTED) == 0) {
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return true;
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}
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return false;
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}
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void USDHierarchyIterator::release_writer(AbstractHierarchyWriter *writer)
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{
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delete static_cast<USDAbstractWriter *>(writer);
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}
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std::string USDHierarchyIterator::make_valid_name(const std::string &name) const
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{
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return pxr::TfMakeValidIdentifier(name);
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}
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void USDHierarchyIterator::set_export_frame(float frame_nr)
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{
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/* The USD stage is already set up to have FPS time-codes per frame. */
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export_time_ = pxr::UsdTimeCode(frame_nr);
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}
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std::string USDHierarchyIterator::get_export_file_path() const
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{
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/* Returns the same path that was passed to `stage_` object during it's creation (via
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* `pxr::UsdStage::CreateNew` function). */
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const pxr::SdfLayerHandle root_layer = stage_->GetRootLayer();
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const std::string usd_export_file_path = root_layer->GetRealPath();
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return usd_export_file_path;
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}
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const pxr::UsdTimeCode &USDHierarchyIterator::get_export_time_code() const
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{
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return export_time_;
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}
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USDExporterContext USDHierarchyIterator::create_usd_export_context(const HierarchyContext *context)
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{
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return USDExporterContext{
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bmain_, depsgraph_, stage_, pxr::SdfPath(context->export_path), this, params_};
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}
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AbstractHierarchyWriter *USDHierarchyIterator::create_transform_writer(
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const HierarchyContext *context)
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{
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return new USDTransformWriter(create_usd_export_context(context));
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}
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AbstractHierarchyWriter *USDHierarchyIterator::create_data_writer(const HierarchyContext *context)
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{
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USDExporterContext usd_export_context = create_usd_export_context(context);
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USDAbstractWriter *data_writer = nullptr;
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switch (context->object->type) {
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case OB_MESH:
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data_writer = new USDMeshWriter(usd_export_context);
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break;
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case OB_CAMERA:
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data_writer = new USDCameraWriter(usd_export_context);
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break;
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case OB_LAMP:
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data_writer = new USDLightWriter(usd_export_context);
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break;
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case OB_MBALL:
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data_writer = new USDMetaballWriter(usd_export_context);
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break;
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case OB_VOLUME:
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data_writer = new USDVolumeWriter(usd_export_context);
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break;
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case OB_EMPTY:
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case OB_CURVES_LEGACY:
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case OB_SURF:
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case OB_FONT:
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case OB_SPEAKER:
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case OB_LIGHTPROBE:
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case OB_LATTICE:
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case OB_ARMATURE:
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case OB_GPENCIL:
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return nullptr;
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case OB_TYPE_MAX:
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BLI_assert_msg(0, "OB_TYPE_MAX should not be used");
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return nullptr;
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}
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if (!data_writer->is_supported(context)) {
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delete data_writer;
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return nullptr;
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}
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return data_writer;
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}
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AbstractHierarchyWriter *USDHierarchyIterator::create_hair_writer(const HierarchyContext *context)
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{
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if (!params_.export_hair) {
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return nullptr;
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}
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return new USDHairWriter(create_usd_export_context(context));
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}
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AbstractHierarchyWriter *USDHierarchyIterator::create_particle_writer(
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const HierarchyContext *UNUSED(context))
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{
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return nullptr;
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}
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} // namespace blender::io::usd
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