Hans Goudey
1ec9ac2016
Previously only attributes of "real" geometry were displayed in attribute search. This commit adds code to look through attributes on instances and add those to the search drop-down too. This required implementing the same sort of recursive traversal as the realize instances code. The situation is a bit different though, this can return early and doesn't need to keep track of transforms. I added a limit so that it doesn't look through the attributes of too many instanced geometry sets. I think this is important, since this isn't a trivial operation and it could potentially happen for every node in a large node tree. Currently the limit is set at 8 geometry sets, which I expect will be enough, since the set of attributes is mostly not very unique anyway. Fixes T86282 Diffrential Revision: https://developer.blender.org/D10919
68 lines
2.8 KiB
C++
68 lines
2.8 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include "BKE_geometry_set.hh"
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namespace blender::bke {
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/**
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* Used to keep track of a group of instances using the same geometry data.
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*/
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struct GeometryInstanceGroup {
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/**
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* The geometry set instanced on each of the transforms. The components are not necessarily
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* owned here. For example, they may be owned by the instanced object. This cannot be a
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* reference because not all instanced data will necessarily have a #geometry_set_eval.
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*/
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GeometrySet geometry_set;
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/**
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* As an optimization to avoid copying, the same geometry set can be associated with multiple
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* instances. Each instance is stored as a transform matrix here. Again, these must be owned
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* because they may be transformed from the original data. TODO: Validate that last statement.
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*/
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Vector<float4x4> transforms;
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};
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void geometry_set_instances_attribute_foreach(const GeometrySet &geometry_set,
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const AttributeForeachCallback callback,
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const int limit);
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void geometry_set_gather_instances(const GeometrySet &geometry_set,
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Vector<GeometryInstanceGroup> &r_instance_groups);
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GeometrySet geometry_set_realize_mesh_for_modifier(const GeometrySet &geometry_set);
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GeometrySet geometry_set_realize_instances(const GeometrySet &geometry_set);
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struct AttributeKind {
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CustomDataType data_type;
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AttributeDomain domain;
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};
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/**
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* Add information about all the attributes on every component of the type. The resulting info
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* will contain the highest complexity data type and the highest priority domain among every
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* attribute with the given name on all of the input components.
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*/
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void geometry_set_gather_instances_attribute_info(Span<GeometryInstanceGroup> set_groups,
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Span<GeometryComponentType> component_types,
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const Set<std::string> &ignored_attributes,
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Map<std::string, AttributeKind> &r_attributes);
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} // namespace blender::bke
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