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/* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
#include "BKE_geometry_set.hh"
namespace blender::bke {
/**
* \note This doesn't extract instances from the "dupli" system for non-geometry-nodes instances.
*/
GeometrySet object_get_evaluated_geometry_set(const Object &object);
/**
* Used to keep track of a group of instances using the same geometry data.
*/
struct GeometryInstanceGroup {
/**
* The geometry set instanced on each of the transforms. The components are not necessarily
* owned here. For example, they may be owned by the instanced object. This cannot be a
* reference because not all instanced data will necessarily have a #geometry_set_eval.
*/
GeometrySet geometry_set;
/**
* As an optimization to avoid copying, the same geometry set can be associated with multiple
* instances. Each instance is stored as a transform matrix here. Again, these must be owned
* because they may be transformed from the original data. TODO: Validate that last statement.
*/
Vector<float4x4> transforms;
};
/**
* Return flattened vector of the geometry component's recursive instances. I.e. all collection
* instances and object instances will be expanded into the instances of their geometry components.
* Even the instances in those geometry components' will be included.
*
* \note For convenience (to avoid duplication in the caller), the returned vector also contains
* the argument geometry set.
*
* \note This doesn't extract instances from the "dupli" system for non-geometry-nodes instances.
*/
void geometry_set_gather_instances(const GeometrySet &geometry_set,
Vector<GeometryInstanceGroup> &r_instance_groups);
/**
* Add information about all the attributes on every component of the type. The resulting info
* will contain the highest complexity data type and the highest priority domain among every
* attribute with the given name on all of the input components.
*/
void geometry_set_gather_instances_attribute_info(
Span<GeometryInstanceGroup> set_groups,
Span<GeometryComponentType> component_types,
const Set<std::string> &ignored_attributes,
Map<AttributeIDRef, AttributeKind> &r_attributes);
} // namespace blender::bke
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