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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup balembic
*/
#include "abc_writer_mball.h"
#include "abc_hierarchy_iterator.h"
#include "BLI_assert.h"
#include "BKE_displist.h"
#include "BKE_lib_id.h"
#include "BKE_mball.h"
#include "BKE_mesh.h"
#include "BKE_object.h"
#include "DNA_mesh_types.h"
#include "DNA_meta_types.h"
namespace blender::io::alembic {
ABCMetaballWriter::ABCMetaballWriter(const ABCWriterConstructorArgs &args)
: ABCGenericMeshWriter(args)
{
}
bool ABCMetaballWriter::is_supported(const HierarchyContext *context) const
{
Scene *scene = DEG_get_input_scene(args_.depsgraph);
bool supported = is_basis_ball(scene, context->object) &&
ABCGenericMeshWriter::is_supported(context);
return supported;
}
bool ABCMetaballWriter::check_is_animated(const HierarchyContext & /*context*/) const
{
/* We assume that metaballs are always animated, as the current object may
* not be animated but another ball in the same group may be. */
return true;
}
bool ABCMetaballWriter::export_as_subdivision_surface(Object * /*ob_eval*/) const
{
/* Metaballs should be exported to subdivision surfaces, if the export options allow. */
return true;
}
Mesh *ABCMetaballWriter::get_export_mesh(Object *object_eval, bool &r_needsfree)
{
Mesh *mesh_eval = BKE_object_get_evaluated_mesh(object_eval);
if (mesh_eval != nullptr) {
/* Mesh_eval only exists when generative modifiers are in use. */
r_needsfree = false;
return mesh_eval;
}
r_needsfree = true;
return BKE_mesh_new_from_object(args_.depsgraph, object_eval, false, false);
}
void ABCMetaballWriter::free_export_mesh(Mesh *mesh)
{
BKE_id_free(nullptr, mesh);
}
bool ABCMetaballWriter::is_basis_ball(Scene *scene, Object *ob) const
{
Object *basis_ob = BKE_mball_basis_find(scene, ob);
return ob == basis_ob;
}
} // namespace blender::io::alembic
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