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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#pragma once
#include "BKE_geometry_set.hh"
namespace blender::bke {
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;
};
void geometry_set_gather_instances(const GeometrySet &geometry_set,
Vector<GeometryInstanceGroup> &r_instance_groups);
GeometrySet geometry_set_realize_instances(const GeometrySet &geometry_set);
/**
* 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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