70 lines
2.1 KiB
C++
70 lines
2.1 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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* The Original Code is Copyright (C) 2020 Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup depsgraph
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*/
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#pragma once
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#include "MEM_guardedalloc.h"
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namespace blender {
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namespace deg {
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struct Node;
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/* Settings/Tags on Relationship.
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* NOTE: Is a bitmask, allowing accumulation. */
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enum RelationFlag {
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/* "cyclic" link - when detecting cycles, this relationship was the one
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* which triggers a cyclic relationship to exist in the graph. */
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RELATION_FLAG_CYCLIC = (1 << 0),
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/* Update flush will not go through this relation. */
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RELATION_FLAG_NO_FLUSH = (1 << 1),
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/* Only flush along the relation is update comes from a node which was
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* affected by user input. */
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RELATION_FLAG_FLUSH_USER_EDIT_ONLY = (1 << 2),
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/* The relation can not be killed by the cyclic dependencies solver. */
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RELATION_FLAG_GODMODE = (1 << 4),
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/* Relation will check existence before being added. */
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RELATION_CHECK_BEFORE_ADD = (1 << 5),
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};
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/* B depends on A (A -> B) */
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struct Relation {
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Relation(Node *from, Node *to, const char *description);
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~Relation();
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void unlink();
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/* the nodes in the relationship (since this is shared between the nodes) */
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Node *from; /* A */
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Node *to; /* B */
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/* relationship attributes */
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const char *name; /* label for debugging */
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int flag; /* Bitmask of RelationFlag) */
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MEM_CXX_CLASS_ALLOC_FUNCS("Relation");
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};
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} // namespace deg
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} // namespace blender
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