Differential D14997 Diff 51824 source/blender/depsgraph/intern/depsgraph_lineart.cc

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source/blender/depsgraph/intern/depsgraph_lineart.cc

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				/* SPDX-License-Identifier: GPL-2.0-or-later
				* Copyright 2018 Blender Foundation. All rights reserved. */

				/** \file
				* \ingroup depsgraph
				*
				* Physics utilities for effectors and collision.
				*/

				#include "intern/depsgraph_lineart.h"

				#include "MEM_guardedalloc.h"

				#include "BLI_compiler_compat.h"
				#include "BLI_listbase.h"

				#include "BKE_gpencil_modifier.h"
				#include "BKE_modifier.h"

				#include "DNA_object_types.h"

				#include "DEG_depsgraph_build.h"
				#include "DEG_depsgraph_lineart.h"
				#include "DEG_depsgraph_query.h"

				#include "depsgraph.h"

				namespace deg = blender::deg;

				/************************* Evaluation Query API ***************************/

				/* Get ID from an ID type object, in a safe manner. This means that object can be nullptr,
				* in which case the function returns nullptr.
				*/
				template<class T> static ID object_id_safe(T object)
				{
				if (object == nullptr) {
				return nullptr;
				}
				return &object->id;
				}

				ListBase DEG_get_lineart_relations(const Depsgraph graph)
				{
				const deg::Depsgraph deg_graph = reinterpret_cast<const deg::Depsgraph >(graph);
				blender::Map<const ID , ListBase > *hash = deg_graph->lineart_relations;
				if (hash == nullptr) {
				return nullptr;
				}
				/* Using nullptr as lookup key as we don't need to read objects separatedly from different
				* collections. */
				return hash->lookup_default(nullptr, nullptr);
				}

				/******************** Depsgraph Building API **********************/

				void DEG_add_lineart_relations(DepsNodeHandle *handle,
				Collection *collection,
				bool allow_duplicates,
				const char *name)
				{
				Depsgraph *depsgraph = DEG_get_graph_from_handle(handle);
				deg::Depsgraph deg_graph = (deg::Depsgraph )depsgraph;
				ListBase *relations = build_lineart_relations(deg_graph, collection, allow_duplicates);
				LISTBASE_FOREACH (LineartRelation *, relation, relations) {
				DEG_add_object_relation(handle, relation->ob, DEG_OB_COMP_GEOMETRY, name);
				DEG_add_object_relation(handle, relation->ob, DEG_OB_COMP_TRANSFORM, name);
				}
				}

				/****************************** Internal API ******************************/

				namespace blender::deg {

				ListBase build_lineart_relations(Depsgraph graph, Collection *collection, bool allow_duplicates)
				{
				Map<const ID , ListBase > *hash = graph->lineart_relations;
				if (hash == nullptr) {
				graph->lineart_relations = new Map<const ID , ListBase >();
				hash = graph->lineart_relations;
				}

				/* Using nullptr as lookup key as we don't need to read objects separatedly from different
				* collections. */
				return hash->lookup_or_add_cb(nullptr, [&]() {
				::Depsgraph depsgraph = reinterpret_cast<::Depsgraph >(graph);
				return BKE_lineart_relations_create(depsgraph, collection, allow_duplicates);
				});
				}

				void clear_lineart_relations(Depsgraph *graph)
				{
				for (int i = 0; i < DEG_PHYSICS_RELATIONS_NUM; i++) {
				Map<const ID , ListBase > *hash = graph->lineart_relations;
				if (hash) {
				for (ListBase *list : hash->values()) {
				BKE_lineart_relations_free(list);
				}
				delete hash;
				graph->lineart_relations = nullptr;
				}
				}
				}

				} // namespace blender::deg