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blender-archive/source/blender/blenkernel/BKE_anonymous_attribute.h

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File headers: SPDX License migration Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069
2022-02-11 09:07:11 +11:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
Geometry Nodes: fields and anonymous attributes This implements the initial core framework for fields and anonymous attributes (also see T91274). The new functionality is hidden behind the "Geometry Nodes Fields" feature flag. When enabled in the user preferences, the following new nodes become available: `Position`, `Index`, `Normal`, `Set Position` and `Attribute Capture`. Socket inspection has not been updated to work with fields yet. Besides these changes at the user level, this patch contains the ground work for: * building and evaluating fields at run-time (`FN_fields.hh`) and * creating and accessing anonymous attributes on geometry (`BKE_anonymous_attribute.h`). For evaluating fields we use a new so called multi-function procedure (`FN_multi_function_procedure.hh`). It allows composing multi-functions in arbitrary ways and supports efficient evaluation as is required by fields. See `FN_multi_function_procedure.hh` for more details on how this evaluation mechanism can be used. A new `AttributeIDRef` has been added which allows handling named and anonymous attributes in the same way in many places. Hans and I worked on this patch together. Differential Revision: https://developer.blender.org/D12414
2021-09-09 12:54:20 +02:00
#pragma once
/** \file
* \ingroup bke
*
* An #AnonymousAttributeID is used to identify attributes that are not explicitly named.
*/
#ifdef __cplusplus
extern "C" {
#endif
typedef struct AnonymousAttributeID AnonymousAttributeID;
AnonymousAttributeID *BKE_anonymous_attribute_id_new_weak(const char *debug_name);
AnonymousAttributeID *BKE_anonymous_attribute_id_new_strong(const char *debug_name);
bool BKE_anonymous_attribute_id_has_strong_references(const AnonymousAttributeID *anonymous_id);
void BKE_anonymous_attribute_id_increment_weak(const AnonymousAttributeID *anonymous_id);
void BKE_anonymous_attribute_id_increment_strong(const AnonymousAttributeID *anonymous_id);
void BKE_anonymous_attribute_id_decrement_weak(const AnonymousAttributeID *anonymous_id);
void BKE_anonymous_attribute_id_decrement_strong(const AnonymousAttributeID *anonymous_id);
const char *BKE_anonymous_attribute_id_debug_name(const AnonymousAttributeID *anonymous_id);
const char *BKE_anonymous_attribute_id_internal_name(const AnonymousAttributeID *anonymous_id);
#ifdef __cplusplus
}
#endif
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