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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2013 Blender Foundation.
* All rights reserved.
*
* Original Author: Joshua Leung
* Contributor(s): None Yet
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file depsgraph/intern/nodes/deg_node.h
* \ingroup depsgraph
*/
#pragma once
#include "intern/depsgraph_types.h"
struct ID;
struct GHash;
struct Scene;
namespace DEG {
struct Depsgraph;
struct DepsRelation;
struct OperationDepsNode;
/* *********************************** */
/* Base-Defines for Nodes in Depsgraph */
/* All nodes in Depsgraph are descended from this. */
struct DepsNode {
/* Helper class for static typeinfo in subclasses. */
struct TypeInfo {
TypeInfo(eDepsNode_Type type, const char *tname);
eDepsNode_Type type;
eDepsNode_Class tclass;
const char *tname;
};
/* Identifier - mainly for debugging purposes. */
string name;
/* Structural type of node. */
eDepsNode_Type type;
/* Type of data/behaviour represented by node... */
eDepsNode_Class tclass;
/* Relationships between nodes
* The reason why all depsgraph nodes are descended from this type (apart
* from basic serialization benefits - from the typeinfo) is that we can have
* relationships between these nodes!
*/
typedef vector<DepsRelation *> Relations;
/* Nodes which this one depends on. */
Relations inlinks;
/* Nodes which depend on this one. */
Relations outlinks;
/* Generic tag for traversal algorithms */
int done;
/* Methods. */
DepsNode();
virtual ~DepsNode();
virtual string identifier() const;
string full_identifier() const;
virtual void init(const ID * /*id*/,
const string &/*subdata*/) {}
virtual void tag_update(Depsgraph * /*graph*/) {}
virtual OperationDepsNode *get_entry_operation() { return NULL; }
virtual OperationDepsNode *get_exit_operation() { return NULL; }
};
/* Macros for common static typeinfo. */
#define DEG_DEPSNODE_DECLARE \
static const DepsNode::TypeInfo typeinfo
#define DEG_DEPSNODE_DEFINE(NodeType, type_, tname_) \
const DepsNode::TypeInfo NodeType::typeinfo = DepsNode::TypeInfo(type_, tname_)
/* Generic Nodes ======================= */
struct ComponentDepsNode;
struct IDDepsNode;
/* Time Source Node. */
struct TimeSourceDepsNode : public DepsNode {
/* New "current time". */
float cfra;
/* time-offset relative to the "official" time source that this one has. */
float offset;
// TODO: evaluate() operation needed
void tag_update(Depsgraph *graph);
DEG_DEPSNODE_DECLARE;
};
/* Root Node. */
struct RootDepsNode : public DepsNode {
RootDepsNode();
~RootDepsNode();
TimeSourceDepsNode *add_time_source(const string &name = "");
/* scene that this corresponds to */
Scene *scene;
/* Entrypoint node for time-changed. */
TimeSourceDepsNode *time_source;
DEG_DEPSNODE_DECLARE;
};
/* ID-Block Reference */
struct IDDepsNode : public DepsNode {
struct ComponentIDKey {
ComponentIDKey(eDepsNode_Type type, const string &name = "")
: type(type), name(name) {}
bool operator== (const ComponentIDKey &other) const
{
return type == other.type && name == other.name;
}
eDepsNode_Type type;
string name;
};
void init(const ID *id, const string &subdata);
~IDDepsNode();
ComponentDepsNode *find_component(eDepsNode_Type type,
const string &name = "") const;
ComponentDepsNode *add_component(eDepsNode_Type type,
const string &name = "");
void remove_component(eDepsNode_Type type, const string &name = "");
void clear_components();
void tag_update(Depsgraph *graph);
void finalize_build();
/* ID Block referenced. */
ID *id;
/* Hash to make it faster to look up components. */
GHash *components;
/* Layers of this node with accumulated layers of it's output relations. */
unsigned int layers;
/* Additional flags needed for scene evaluation.
* TODO(sergey): Only needed for until really granular updates
* of all the entities.
*/
int eval_flags;
DEG_DEPSNODE_DECLARE;
};
/* Subgraph Reference. */
struct SubgraphDepsNode : public DepsNode {
void init(const ID *id, const string &subdata);
~SubgraphDepsNode();
/* Instanced graph. */
Depsgraph *graph;
/* ID-block at root of subgraph (if applicable). */
ID *root_id;
/* Number of nodes which use/reference this subgraph - if just 1, it may be
* possible to merge into main,
*/
size_t num_users;
/* (eSubgraphRef_Flag) assorted settings for subgraph node. */
int flag;
DEG_DEPSNODE_DECLARE;
};
/* Flags for subgraph node */
typedef enum eSubgraphRef_Flag {
/* Subgraph referenced is shared with another reference, so shouldn't
* free on exit.
*/
SUBGRAPH_FLAG_SHARED = (1 << 0),
/* Node is first reference to subgraph, so it can be freed when we are
* removed.
*/
SUBGRAPH_FLAG_FIRSTREF = (1 << 1),
} eSubgraphRef_Flag;
void deg_register_base_depsnodes();
} // namespace DEG
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