Differential D11057 Diff 36450 source/blender/io/common/IO_abstract_hierarchy_iterator.h

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source/blender/io/common/IO_abstract_hierarchy_iterator.h

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*		*
* Instantiated by the AbstractHierarchyIterator on the first frame an object exists. Generally		* Instantiated by the AbstractHierarchyIterator on the first frame an object exists. Generally
* that's the first frame to be exported, but can be later, for example when objects are		* that's the first frame to be exported, but can be later, for example when objects are
* instantiated by particles. The AbstractHierarchyWriter::write() function is called on every		* instantiated by particles. The AbstractHierarchyWriter::write() function is called on every
* frame the object exists in the dependency graph and should be exported.		* frame the object exists in the dependency graph and should be exported.
*/		*/
class AbstractHierarchyWriter {		class AbstractHierarchyWriter {
public:		public:
virtual ~AbstractHierarchyWriter();		virtual ~AbstractHierarchyWriter() = default;
virtual void write(HierarchyContext &context) = 0;		virtual void write(HierarchyContext &context) = 0;
/* TODO(Sybren): add function like absent() that's called when a writer was previously created,		/* TODO(Sybren): add function like absent() that's called when a writer was previously created,
* but wasn't used while exporting the current frame (for example, a particle-instanced mesh of		* but wasn't used while exporting the current frame (for example, a particle-instanced mesh of
* which the particle is no longer alive). */		* which the particle is no longer alive). */
protected:		protected:
/* Return true if the data written by this writer changes over time.		/* Return true if the data written by this writer changes over time.
* Note that this function assumes this is an object data writer. Transform writers should not		* Note that this function assumes this is an object data writer. Transform writers should not
* call this but implement their own logic. */		* call this but implement their own logic. */
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Object *object;		Object *object;
Object duplicated_by; / nullptr for real objects. */		Object duplicated_by; / nullptr for real objects. */
PersistentID persistent_id;		PersistentID persistent_id;

protected:		protected:
ObjectIdentifier(Object object, Object duplicated_by, const PersistentID &persistent_id);		ObjectIdentifier(Object object, Object duplicated_by, const PersistentID &persistent_id);

public:		public:
ObjectIdentifier(const ObjectIdentifier &other);
~ObjectIdentifier();

static ObjectIdentifier for_graph_root();		static ObjectIdentifier for_graph_root();
static ObjectIdentifier for_real_object(Object *object);		static ObjectIdentifier for_real_object(Object *object);
static ObjectIdentifier for_hierarchy_context(const HierarchyContext *context);		static ObjectIdentifier for_hierarchy_context(const HierarchyContext *context);
static ObjectIdentifier for_duplicated_object(const DupliObject *dupli_object,		static ObjectIdentifier for_duplicated_object(const DupliObject *dupli_object,
Object *duplicated_by);		Object *duplicated_by);

bool is_root() const;		bool is_root() const;
};		};
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