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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2020 Blender Foundation. All rights reserved. */
#include "abc_writer_abstract.h"
#include "abc_hierarchy_iterator.h"
#include "BKE_animsys.h"
#include "BKE_key.h"
#include "BKE_object.h"
#include "DNA_modifier_types.h"
#include "DEG_depsgraph.h"
#include <Alembic/AbcGeom/Visibility.h>
#include "CLG_log.h"
static CLG_LogRef LOG = {"io.alembic"};
namespace blender::io::alembic {
using Alembic::Abc::OObject;
using Alembic::Abc::TimeSamplingPtr;
ABCAbstractWriter::ABCAbstractWriter(const ABCWriterConstructorArgs &args)
: args_(args),
frame_has_been_written_(false),
is_animated_(false),
timesample_index_(args_.abc_archive->time_sampling_index_shapes())
{
}
bool ABCAbstractWriter::is_supported(const HierarchyContext * /*context*/) const
{
return true;
}
void ABCAbstractWriter::write(HierarchyContext &context)
{
if (!frame_has_been_written_) {
is_animated_ = (args_.export_params->frame_start != args_.export_params->frame_end) &&
check_is_animated(context);
ensure_custom_properties_exporter(context);
}
else if (!is_animated_) {
/* A frame has already been written, and without animation one frame is enough. */
return;
}
do_write(context);
if (custom_props_) {
custom_props_->write_all(get_id_properties(context));
}
frame_has_been_written_ = true;
}
void ABCAbstractWriter::ensure_custom_properties_exporter(const HierarchyContext &context)
{
if (!args_.export_params->export_custom_properties) {
return;
}
if (custom_props_) {
/* Custom properties exporter already created. */
return;
}
/* Avoid creating a custom properties exporter if there are no custom properties to export. */
const IDProperty *id_properties = get_id_properties(context);
if (id_properties == nullptr || id_properties->len == 0) {
return;
}
custom_props_ = std::make_unique<CustomPropertiesExporter>(this);
}
const IDProperty *ABCAbstractWriter::get_id_properties(const HierarchyContext &context) const
{
Object *object = context.object;
if (object->data == nullptr) {
return nullptr;
}
/* Most subclasses write object data, so default to the object data's ID properties. */
return static_cast<ID *>(object->data)->properties;
}
uint32_t ABCAbstractWriter::timesample_index() const
{
return timesample_index_;
}
const Imath::Box3d &ABCAbstractWriter::bounding_box() const
{
return bounding_box_;
}
void ABCAbstractWriter::update_bounding_box(Object *object)
{
BoundBox *bb = BKE_object_boundbox_get(object);
if (!bb) {
if (object->type != OB_CAMERA) {
CLOG_WARN(&LOG, "Bounding box is null!");
}
bounding_box_.min.x = bounding_box_.min.y = bounding_box_.min.z = 0;
bounding_box_.max.x = bounding_box_.max.y = bounding_box_.max.z = 0;
return;
}
/* Convert Z-up to Y-up. This also changes which vector goes into which min/max property. */
bounding_box_.min.x = bb->vec[0][0];
bounding_box_.min.y = bb->vec[0][2];
bounding_box_.min.z = -bb->vec[6][1];
bounding_box_.max.x = bb->vec[6][0];
bounding_box_.max.y = bb->vec[6][2];
bounding_box_.max.z = -bb->vec[0][1];
}
void ABCAbstractWriter::write_visibility(const HierarchyContext &context)
{
const bool is_visible = context.is_object_visible(args_.export_params->evaluation_mode);
Alembic::Abc::OObject abc_object = get_alembic_object();
if (!abc_visibility_.valid()) {
abc_visibility_ = Alembic::AbcGeom::CreateVisibilityProperty(abc_object, timesample_index_);
}
abc_visibility_.set(is_visible ? Alembic::AbcGeom::kVisibilityVisible :
Alembic::AbcGeom::kVisibilityHidden);
}
} // namespace blender::io::alembic
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