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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2019 Blender Foundation. All rights reserved. */
#include "usd.h"
#include "usd_hierarchy_iterator.h"
#include "usd_writer_abstract.h"
#include "usd_writer_camera.h"
#include "usd_writer_hair.h"
#include "usd_writer_light.h"
#include "usd_writer_mesh.h"
#include "usd_writer_metaball.h"
#include "usd_writer_transform.h"
#include "usd_writer_volume.h"
#include <string>
#include <pxr/base/tf/stringUtils.h>
#include "BKE_duplilist.h"
#include "BLI_assert.h"
#include "BLI_utildefines.h"
#include "DEG_depsgraph_query.h"
#include "DNA_ID.h"
#include "DNA_layer_types.h"
#include "DNA_object_types.h"
namespace blender::io::usd {
USDHierarchyIterator::USDHierarchyIterator(Main *bmain,
Depsgraph *depsgraph,
pxr::UsdStageRefPtr stage,
const USDExportParams ¶ms)
: AbstractHierarchyIterator(bmain, depsgraph), stage_(stage), params_(params)
{
}
bool USDHierarchyIterator::mark_as_weak_export(const Object *object) const
{
if (params_.selected_objects_only && (object->base_flag & BASE_SELECTED) == 0) {
return true;
}
return false;
}
void USDHierarchyIterator::release_writer(AbstractHierarchyWriter *writer)
{
delete static_cast<USDAbstractWriter *>(writer);
}
std::string USDHierarchyIterator::make_valid_name(const std::string &name) const
{
return pxr::TfMakeValidIdentifier(name);
}
void USDHierarchyIterator::set_export_frame(float frame_nr)
{
/* The USD stage is already set up to have FPS time-codes per frame. */
export_time_ = pxr::UsdTimeCode(frame_nr);
}
std::string USDHierarchyIterator::get_export_file_path() const
{
/* Returns the same path that was passed to `stage_` object during it's creation (via
* `pxr::UsdStage::CreateNew` function). */
const pxr::SdfLayerHandle root_layer = stage_->GetRootLayer();
const std::string usd_export_file_path = root_layer->GetRealPath();
return usd_export_file_path;
}
const pxr::UsdTimeCode &USDHierarchyIterator::get_export_time_code() const
{
return export_time_;
}
USDExporterContext USDHierarchyIterator::create_usd_export_context(const HierarchyContext *context)
{
return USDExporterContext{
bmain_, depsgraph_, stage_, pxr::SdfPath(context->export_path), this, params_};
}
AbstractHierarchyWriter *USDHierarchyIterator::create_transform_writer(
const HierarchyContext *context)
{
return new USDTransformWriter(create_usd_export_context(context));
}
AbstractHierarchyWriter *USDHierarchyIterator::create_data_writer(const HierarchyContext *context)
{
USDExporterContext usd_export_context = create_usd_export_context(context);
USDAbstractWriter *data_writer = nullptr;
switch (context->object->type) {
case OB_MESH:
data_writer = new USDMeshWriter(usd_export_context);
break;
case OB_CAMERA:
data_writer = new USDCameraWriter(usd_export_context);
break;
case OB_LAMP:
data_writer = new USDLightWriter(usd_export_context);
break;
case OB_MBALL:
data_writer = new USDMetaballWriter(usd_export_context);
break;
case OB_VOLUME:
data_writer = new USDVolumeWriter(usd_export_context);
break;
case OB_EMPTY:
case OB_CURVES_LEGACY:
case OB_SURF:
case OB_FONT:
case OB_SPEAKER:
case OB_LIGHTPROBE:
case OB_LATTICE:
case OB_ARMATURE:
case OB_GPENCIL:
return nullptr;
case OB_TYPE_MAX:
BLI_assert_msg(0, "OB_TYPE_MAX should not be used");
return nullptr;
}
if (!data_writer->is_supported(context)) {
delete data_writer;
return nullptr;
}
return data_writer;
}
AbstractHierarchyWriter *USDHierarchyIterator::create_hair_writer(const HierarchyContext *context)
{
if (!params_.export_hair) {
return nullptr;
}
return new USDHairWriter(create_usd_export_context(context));
}
AbstractHierarchyWriter *USDHierarchyIterator::create_particle_writer(
const HierarchyContext *UNUSED(context))
{
return nullptr;
}
} // namespace blender::io::usd
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