Scenegraph for VRML files. More...

Collaboration diagram for BIFS/VRML/X3D Scenegraph:

Data Structures
struct	SFString

struct	SFColor

struct	SFColorRGBA

struct	SFURL

struct	SFVec2d

struct	SFVec3d

struct	SFImage

struct	SFCommandBuffer

struct	SFScript

struct	SFAttrRef

struct	GenMFField

struct	MFInt32

struct	MFInt

struct	MFFloat

struct	MFDouble

struct	MFBool

struct	MFColor

struct	MFColorRGBA

struct	MFRotation

struct	MFTime

struct	MFVec2f

struct	MFVec2d

struct	MFVec3f

struct	MFVec3d

struct	MFVec4f

struct	MFURL

struct	MFString

struct	MFScript

struct	MFAttrRef

struct	GF_VRMLParent

Macros
#define	MPEG4_RESERVED_NDT 200

#define	GF_SG_INTERNAL_PROTO (PTR_TO_U_CAST -1)

#define	VRML_CHILDREN

Typedefs
typedef u32	SFBool

typedef s32	SFInt32

typedef s32	SFInt

typedef Fixed	SFFloat

typedef Double	SFDouble

typedef Double	SFTime

typedef struct __vec2f	SFVec2f

typedef struct __vec3f	SFVec3f

typedef struct __vec4f	SFRotation

typedef struct __vec4f	SFVec4f

Enumerations
enum	{ NDT_SFMetadataNode = MPEG4_RESERVED_NDT+1 , NDT_SFFillPropertiesNode , NDT_SFX3DLinePropertiesNode , NDT_SFGeoOriginNode , NDT_SFHAnimNode , NDT_SFHAnimDisplacerNode , NDT_SFNurbsControlCurveNode , NDT_SFNurbsSurfaceNode , NDT_SFNurbsCurveNode }

enum	{ GF_SG_EVENT_FIELD = 0 , GF_SG_EVENT_EXPOSED_FIELD = 1 , GF_SG_EVENT_IN = 2 , GF_SG_EVENT_OUT = 3 , GF_SG_EVENT_UNKNOWN = 4 }

enum	{ GF_SG_FIELD_CODING_ALL = 0 , GF_SG_FIELD_CODING_DEF = 1 , GF_SG_FIELD_CODING_IN = 2 , GF_SG_FIELD_CODING_OUT = 3 , GF_SG_FIELD_CODING_DYN = 4 }

enum	{ GF_SG_VRML_SFBOOL = 0 , GF_SG_VRML_SFFLOAT = 1 , GF_SG_VRML_SFTIME = 2 , GF_SG_VRML_SFINT32 = 3 , GF_SG_VRML_SFSTRING = 4 , GF_SG_VRML_SFVEC3F = 5 , GF_SG_VRML_SFVEC2F = 6 , GF_SG_VRML_SFCOLOR = 7 , GF_SG_VRML_SFROTATION = 8 , GF_SG_VRML_SFIMAGE = 9 , GF_SG_VRML_SFNODE = 10 , GF_SG_VRML_SFVEC4F = 11 , GF_SG_VRML_SFURL , GF_SG_VRML_SFSCRIPT , GF_SG_VRML_SFCOMMANDBUFFER , GF_SG_VRML_SFDOUBLE , GF_SG_VRML_SFCOLORRGBA , GF_SG_VRML_SFVEC2D , GF_SG_VRML_SFVEC3D , GF_SG_VRML_FIRST_MF = 32 , GF_SG_VRML_MFBOOL = GF_SG_VRML_FIRST_MF , GF_SG_VRML_MFFLOAT , GF_SG_VRML_MFTIME , GF_SG_VRML_MFINT32 , GF_SG_VRML_MFSTRING , GF_SG_VRML_MFVEC3F , GF_SG_VRML_MFVEC2F , GF_SG_VRML_MFCOLOR , GF_SG_VRML_MFROTATION , GF_SG_VRML_MFIMAGE , GF_SG_VRML_MFNODE , GF_SG_VRML_MFVEC4F , GF_SG_VRML_SFATTRREF = 45 , GF_SG_VRML_MFATTRREF = 46 , GF_SG_VRML_MFURL , GF_SG_VRML_MFSCRIPT , GF_SG_VRML_MFCOMMANDBUFFER , GF_SG_VRML_MFDOUBLE , GF_SG_VRML_MFCOLORRGBA , GF_SG_VRML_MFVEC2D , GF_SG_VRML_MFVEC3D , GF_SG_VRML_SCRIPT_FUNCTION , GF_SG_VRML_GENERIC_FUNCTION , GF_SG_VRML_UNKNOWN }

enum	{ GF_SG_SCRIPT_TYPE_FIELD = 0 , GF_SG_SCRIPT_TYPE_EVENT_IN , GF_SG_SCRIPT_TYPE_EVENT_OUT }

Functions
const char *	gf_sg_vrml_get_event_type_name (u32 EventType, Bool forX3D)

u32	gf_node_get_num_fields_in_mode (GF_Node *n, u8 IndexMode)

SFColorRGBA	gf_sg_sfcolor_to_rgba (SFColor val)

Bool	gf_sg_vrml_is_sf_field (u32 FieldType)

u32	gf_sg_vrml_get_sf_type (u32 FieldType)

GF_Err	gf_sg_vrml_mf_insert (void mf, u32 FieldType, void *new_ptr, u32 InsertAt)

GF_Err	gf_sg_vrml_mf_reset (void *mf, u32 FieldType)

void	gf_sg_mfurl_del (MFURL url)

void	gf_sg_vrml_copy_mfurl (MFURL dst, MFURL src)

SFRotation	gf_sg_sfrotation_interpolate (SFRotation kv1, SFRotation kv2, Fixed f)

GF_Err	gf_node_insert_child (GF_Node parent, GF_Node new_child, s32 pos)

GF_Err	gf_node_replace_child (GF_Node node, GF_ChildNodeItem container, s32 pos, GF_Node newNode)

void	gf_sg_vrml_parent_setup (GF_Node *n)

void	gf_sg_vrml_parent_destroy (GF_Node *n)

Bool	gf_node_in_table_by_tag (u32 tag, u32 NDTType)

const char *	gf_sg_vrml_get_field_type_name (u32 FieldType)

void *	gf_sg_vrml_field_pointer_new (u32 FieldType)

void	gf_sg_vrml_field_pointer_del (void *field, u32 FieldType)

GF_Err	gf_sg_vrml_mf_append (void mf, u32 FieldType, void *new_ptr)

GF_Err	gf_sg_vrml_mf_remove (void *mf, u32 FieldType, u32 RemoveFrom)

GF_Err	gf_sg_vrml_mf_alloc (void *mf, u32 FieldType, u32 NbItems)

GF_Err	gf_sg_vrml_mf_get_item (void mf, u32 FieldType, void *new_ptr, u32 ItemPos)

void	gf_sg_vrml_field_copy (void dest, void orig, u32 FieldType)

void	gf_sg_vrml_field_clone (void dest, void orig, u32 FieldType, GF_SceneGraph *inScene)

Bool	gf_sg_vrml_field_equal (void dest, void orig, u32 FieldType)

GF_Route *	gf_sg_route_new (GF_SceneGraph sg, GF_Node fromNode, u32 fromField, GF_Node *toNode, u32 toField)

void	gf_sg_route_del (GF_Route *route)

GF_Err	gf_sg_route_del_by_id (GF_SceneGraph *sg, u32 routeID)

GF_Route *	gf_sg_route_find (GF_SceneGraph *sg, u32 RouteID)

GF_Route *	gf_sg_route_find_by_name (GF_SceneGraph sg, char name)

GF_Err	gf_sg_route_set_id (GF_Route *route, u32 ID)

GF_Err	gf_sg_route_set_name (GF_Route route, char name)

char *	gf_sg_route_get_name (GF_Route *route)

u32	gf_sg_get_next_available_route_id (GF_SceneGraph *sg)

void	gf_sg_set_max_defined_route_id (GF_SceneGraph *sg, u32 ID)

void	gf_sg_route_new_to_callback (GF_SceneGraph sg, GF_Node fromNode, u32 fromField, void cbk, void(route_callback)(void param, GF_FieldInfo from_field))

void	gf_sg_activate_routes (GF_SceneGraph *sg)

u32	gf_sg_get_next_available_proto_id (GF_SceneGraph *sg)

GF_Proto *	gf_sg_proto_new (GF_SceneGraph sg, u32 ProtoID, char name, Bool unregistered)

GF_Err	gf_sg_proto_del (GF_Proto *proto)

GF_SceneGraph *	gf_sg_proto_get_graph (GF_Proto *proto)

GF_Err	gf_sg_proto_add_node_code (GF_Proto proto, GF_Node n)

u32	gf_sg_proto_get_field_count (GF_Proto *proto)

GF_ProtoFieldInterface *	gf_sg_proto_field_find_by_name (GF_Proto proto, char fieldName)

GF_ProtoFieldInterface *	gf_sg_proto_field_find (GF_Proto *proto, u32 fieldIndex)

GF_ProtoFieldInterface *	gf_sg_proto_field_new (GF_Proto proto, u32 fieldType, u32 eventType, char fieldName)

GF_Err	gf_sg_proto_field_set_ised (GF_Proto proto, u32 protoFieldIndex, GF_Node node, u32 nodeFieldIndex)

GF_Err	gf_sg_proto_field_get_field (GF_ProtoFieldInterface field, GF_FieldInfo info)

GF_Node *	gf_sg_proto_create_instance (GF_SceneGraph sg, GF_Proto proto)

GF_Err	gf_sg_proto_load_code (GF_Node *proto_inst)

GF_Proto *	gf_sg_find_proto (GF_SceneGraph sg, u32 ProtoID, char name)

GF_Err	gf_sg_delete_all_protos (GF_SceneGraph *sg)

GF_Proto *	gf_node_get_proto (GF_Node *node)

u32	gf_sg_proto_get_id (GF_Proto *proto)

const char *	gf_sg_proto_get_class_name (GF_Proto *proto)

Bool	gf_sg_proto_field_is_sftime_offset (GF_Node node, GF_FieldInfo field)

GF_Err	gf_sg_proto_instance_set_ised (GF_Node protoinst, u32 protoFieldIndex, GF_Node node, u32 nodeFieldIndex)

GF_Node *	gf_node_get_proto_root (GF_Node *node)

void	gf_sg_proto_mark_field_loaded (GF_Node node, GF_FieldInfo info)

void	gf_sg_set_proto_loader (GF_SceneGraph sg, GF_SceneGraph (GetExternProtoLib)(void SceneCallback, MFURL *lib_url))

MFURL *	gf_sg_proto_get_extern_url (GF_Proto *proto)

GF_ScriptField *	gf_sg_script_field_new (GF_Node script, u32 eventType, u32 fieldType, const char name)

GF_Err	gf_sg_script_field_get_info (GF_ScriptField field, GF_FieldInfo info)

void	gf_sg_script_event_in (GF_Node script, GF_FieldInfo in_field)

void	gf_node_event_out (GF_Node *n, u32 FieldIndex)

void	gf_node_event_out_str (GF_Node n, const char eventName)

u32	gf_node_mpeg4_type_by_class_name (const char *node_name)

u32	gf_node_x3d_type_by_class_name (const char *node_name)

Bool	gf_node_proto_is_grouping (GF_Node *n)

GF_Err	gf_node_proto_set_grouping (GF_Node *n)

GF_Err	gf_node_set_proto_eventin_handler (GF_Node n, u32 fieldIndex, void(event_in_cbk)(GF_Node pThis, struct _route route))

Detailed Description

This section documents the Scenegraph for VRML files.

Data Structure Documentation

◆ SFString

struct SFString

String

Data Fields
char *	buffer

◆ SFColor

struct SFColor

RGB color

Data Fields
Fixed	red
Fixed	green
Fixed	blue

◆ SFColorRGBA

struct SFColorRGBA

RGBA color

Data Fields
Fixed	red
Fixed	green
Fixed	blue
Fixed	alpha

◆ SFURL

struct SFURL

URL

Data Fields
u32	OD_ID
char *	url

◆ SFVec2d

struct SFVec2d

2D vector (double)

Data Fields
Double	x
Double	y

◆ SFVec3d

struct SFVec3d

3D vector (double)

Data Fields
Double	x
Double	y
Double	z

◆ SFImage

struct SFImage

Image data (rgb pixels)

Data Fields
u32	width
u32	height
u8	numComponents
unsigned char *	pixels

◆ SFCommandBuffer

struct SFCommandBuffer

BIFS Command Buffer

Data Fields
u32	bufferSize
u8 *	buffer
GF_List *	commandList

◆ SFScript

struct SFScript

Script

Note: The javascript or vrml script is handled in its decompressed (textual) format since most JS interpreter work with text

Data Fields
char *	script_text

◆ SFAttrRef

struct SFAttrRef

BIFS Attribute Reference

Collaboration diagram for SFAttrRef:

Data Fields
GF_Node *	node
u32	fieldIndex

◆ GenMFField

struct GenMFField

generic MF field: all MF fields use the same syntax except MFNode which uses GF_List. You can thus use this structure to safely typecast MF field pointers

Data Fields
u32	count
u8 *	array

◆ MFInt32

struct MFInt32

Interger array

Data Fields
u32	count
s32 *	vals

◆ MFInt

struct MFInt

Interger array

Data Fields
u32	count
s32 *	vals

◆ MFFloat

struct MFFloat

Float array

Data Fields
u32	count
Fixed *	vals

◆ MFDouble

struct MFDouble

Double array

Data Fields
u32	count
Double *	vals

◆ MFBool

struct MFBool

Boolean array

Data Fields
u32	count
u32 *	vals

◆ MFColor

struct MFColor

Color RGB array

Collaboration diagram for MFColor:

Data Fields
u32	count
SFColor *	vals

◆ MFColorRGBA

struct MFColorRGBA

Color RGBA array

Collaboration diagram for MFColorRGBA:

Data Fields
u32	count
SFColorRGBA *	vals

◆ MFRotation

struct MFRotation

Rotation array

Data Fields
u32	count
SFRotation *	vals

◆ MFTime

struct MFTime

Time array

Data Fields
u32	count
Double *	vals

◆ MFVec2f

struct MFVec2f

2D Vector (float) array

Data Fields
u32	count
SFVec2f *	vals

◆ MFVec2d

struct MFVec2d

2D Vector (double) array

Collaboration diagram for MFVec2d:

Data Fields
u32	count
SFVec2d *	vals

◆ MFVec3f

struct MFVec3f

3D Vector (float) array

Data Fields
u32	count
SFVec3f *	vals

◆ MFVec3d

struct MFVec3d

3D Vector (double) array

Collaboration diagram for MFVec3d:

Data Fields
u32	count
SFVec3d *	vals

◆ MFVec4f

struct MFVec4f

4D Vector (float) array

Data Fields
u32	count
SFVec4f *	vals

◆ MFURL

struct MFURL

URL array

Collaboration diagram for MFURL:

Data Fields
u32	count
SFURL *	vals

◆ MFString

struct MFString

String array

Data Fields
u32	count
char **	vals

◆ MFScript

struct MFScript

Script array

Collaboration diagram for MFScript:

Data Fields
u32	count
SFScript *	vals

◆ MFAttrRef

struct MFAttrRef

Attribute Reference array

Collaboration diagram for MFAttrRef:

Data Fields
u32	count
SFAttrRef *	vals

◆ GF_VRMLParent

struct GF_VRMLParent

generic VRML parent node

Macro Definition Documentation

◆ MPEG4_RESERVED_NDT

#define MPEG4_RESERVED_NDT 200

reserved NDT for MPEG4 (match binary coding)

◆ GF_SG_INTERNAL_PROTO

#define GF_SG_INTERNAL_PROTO (PTR_TO_U_CAST -1)

internal prototype

◆ VRML_CHILDREN

#define VRML_CHILDREN

Value:

        CHILDREN                                                                        \
        GF_ChildNodeItem *addChildren;                                                  \
        void (*on_addChildren)(GF_Node *pNode, struct _route *route);           \
        GF_ChildNodeItem *removeChildren;                                               \
        void (*on_removeChildren)(GF_Node *pNode, struct _route *route);                \

VRML grouping nodes macro - note we have inverted the children field to be compatible with the base GF_ParentNode node All grouping nodes (with "children" field) implement the following:

addChildren: chain containing nodes to add passed as eventIn - handled internally through ROUTE void (*on_addChildren)(GF_Node *pNode): add feventIn signaler - this is handled internally by the scene_graph and SHALL NOT BE overridden since it takes care of node(s) routing

removeChildren: chain containing nodes to remove passed as eventIn - handled internally through ROUTE

void (*on_removeChildren)(GF_Node *pNode): remove eventIn signaler - this is handled internally by the scene_graph and SHALL NOT BE overridden since it takes care of node(s) routing

children: list of children SFNodes

Typedef Documentation

◆ SFBool

typedef u32 SFBool

Boolean

◆ SFInt32

typedef s32 SFInt32

Integer

◆ SFInt

typedef s32 SFInt

Integer

◆ SFFloat

typedef Fixed SFFloat

Float

◆ SFDouble

typedef Double SFDouble

Double

◆ SFTime

typedef Double SFTime

Time

◆ SFVec2f

typedef struct __vec2f SFVec2f

2D vector (float)

◆ SFVec3f

typedef struct __vec3f SFVec3f

3D vector (float)

◆ SFRotation

typedef struct __vec4f SFRotation

rotation (float)

◆ SFVec4f

typedef struct __vec4f SFVec4f

4D vector (float)

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

the NDTs used in X3D not defined in MPEG4

Enumerator
NDT_SFMetadataNode
NDT_SFFillPropertiesNode
NDT_SFX3DLinePropertiesNode
NDT_SFGeoOriginNode
NDT_SFHAnimNode
NDT_SFHAnimDisplacerNode
NDT_SFNurbsControlCurveNode
NDT_SFNurbsSurfaceNode
NDT_SFNurbsCurveNode

◆ anonymous enum

anonymous enum

event types of fields, as defined in the specs this should not be needed by non binary codecs

Enumerator
GF_SG_EVENT_FIELD
GF_SG_EVENT_EXPOSED_FIELD
GF_SG_EVENT_IN
GF_SG_EVENT_OUT
GF_SG_EVENT_UNKNOWN

◆ anonymous enum

anonymous enum

field coding mode

BIFS defines the bitstream syntax contextually, and therefore sometimes refer to fields as indexed

in the node ("all" mode) or just as a sub-set (in, out, def, dyn modes) of similar types

Enumerator
GF_SG_FIELD_CODING_ALL
GF_SG_FIELD_CODING_DEF
GF_SG_FIELD_CODING_IN
GF_SG_FIELD_CODING_OUT
GF_SG_FIELD_CODING_DYN

◆ anonymous enum

anonymous enum

field types, as defined in BIFS encoding (used for scripts and proto coding)

Enumerator
GF_SG_VRML_SFBOOL
GF_SG_VRML_SFFLOAT
GF_SG_VRML_SFTIME
GF_SG_VRML_SFINT32
GF_SG_VRML_SFSTRING
GF_SG_VRML_SFVEC3F
GF_SG_VRML_SFVEC2F
GF_SG_VRML_SFCOLOR
GF_SG_VRML_SFROTATION
GF_SG_VRML_SFIMAGE
GF_SG_VRML_SFNODE
GF_SG_VRML_SFVEC4F
GF_SG_VRML_SFURL
GF_SG_VRML_SFSCRIPT
GF_SG_VRML_SFCOMMANDBUFFER
GF_SG_VRML_SFDOUBLE
GF_SG_VRML_SFCOLORRGBA
GF_SG_VRML_SFVEC2D
GF_SG_VRML_SFVEC3D
GF_SG_VRML_FIRST_MF
GF_SG_VRML_MFBOOL
GF_SG_VRML_MFFLOAT
GF_SG_VRML_MFTIME
GF_SG_VRML_MFINT32
GF_SG_VRML_MFSTRING
GF_SG_VRML_MFVEC3F
GF_SG_VRML_MFVEC2F
GF_SG_VRML_MFCOLOR
GF_SG_VRML_MFROTATION
GF_SG_VRML_MFIMAGE
GF_SG_VRML_MFNODE
GF_SG_VRML_MFVEC4F
GF_SG_VRML_SFATTRREF
GF_SG_VRML_MFATTRREF
GF_SG_VRML_MFURL
GF_SG_VRML_MFSCRIPT
GF_SG_VRML_MFCOMMANDBUFFER
GF_SG_VRML_MFDOUBLE
GF_SG_VRML_MFCOLORRGBA
GF_SG_VRML_MFVEC2D
GF_SG_VRML_MFVEC3D
GF_SG_VRML_SCRIPT_FUNCTION
GF_SG_VRML_GENERIC_FUNCTION
GF_SG_VRML_UNKNOWN

◆ anonymous enum

anonymous enum

script fields type don't have the same value as the bifs ones...

Enumerator
GF_SG_SCRIPT_TYPE_FIELD
GF_SG_SCRIPT_TYPE_EVENT_IN
GF_SG_SCRIPT_TYPE_EVENT_OUT

Function Documentation

◆ gf_sg_vrml_get_event_type_name()

const char* gf_sg_vrml_get_event_type_name	(	u32	EventType,
		Bool	forX3D
	)

gets the event type name

Parameters

EventType	the event type
forX3D	for X3D dumping

Returns: the event name

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◆ gf_node_get_num_fields_in_mode()

u32 gf_node_get_num_fields_in_mode	(	GF_Node *	n,
		u8	IndexMode
	)

gets the number of field in the given mode (BIFS specific)

Parameters

n	the target node
IndexMode	the field indexing mode

Returns: the number of field in this mode

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◆ gf_sg_sfcolor_to_rgba()

SFColorRGBA gf_sg_sfcolor_to_rgba ( SFColor val )

converts an SFColor to an SFColorRGBA by setting the alpha component to 1

Parameters

val	the input color

Returns: the RGBA color

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◆ gf_sg_vrml_is_sf_field()

Bool gf_sg_vrml_is_sf_field ( u32 FieldType )

checks if a field is an SF field

Parameters

FieldType the tragte filed type

Returns: GF_TRUE if field is a single field

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◆ gf_sg_vrml_get_sf_type()

u32 gf_sg_vrml_get_sf_type ( u32 FieldType )

translates MF/SF to SF type

Parameters

FieldType the tragte filed type

Returns: SF field type

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◆ gf_sg_vrml_mf_insert()

GF_Err gf_sg_vrml_mf_insert	(	void *	mf,
		u32	FieldType,
		void **	new_ptr,
		u32	InsertAt
	)

inserts (+alloc) a slot in the MFField with a specified position for insertion and sets the ptr to the newly created slot

Parameters

mf	pointer to the MF field
FieldType	the MF field type
new_ptr	set to the allocated slot (do not free)
InsertAt	is the 0-based index for the new slot

Returns: error if any

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◆ gf_sg_vrml_mf_reset()

GF_Err gf_sg_vrml_mf_reset	(	void *	mf,
		u32	FieldType
	)

removes all items of the MFField

Parameters

mf	pointer to the MF field
FieldType	the MF field type

Returns: error if any

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◆ gf_sg_mfurl_del()

void gf_sg_mfurl_del ( MFURL url )

deletes an MFUrl field

Note: exported for URL handling in compositor

Parameters

url	the MF url field to reset

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◆ gf_sg_vrml_copy_mfurl()

void gf_sg_vrml_copy_mfurl	(	MFURL *	dst,
		MFURL *	src
	)

copies MFUrl field

Note: exported for URL handling in compositor

Parameters

dst	the destination MF url field to copy
src	the source MF url field to copy

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◆ gf_sg_sfrotation_interpolate()

SFRotation gf_sg_sfrotation_interpolate	(	SFRotation	kv1,
		SFRotation	kv2,
		Fixed	f
	)

interpolates SFRotation

Note: exported for 3D camera in compositor

Parameters

kv1	start value for interpolation
kv2	end value for interpolation
f	interpolation factor

Returns: the interpolated result

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◆ gf_node_insert_child()

GF_Err gf_node_insert_child	(	GF_Node *	parent,
		GF_Node *	new_child,
		s32	pos
	)

adds a new node to the "children" field

Warning: DOES NOT CHECK CHILD/PARENT type compatibility

Parameters

parent	the target parent node
new_child	the child to insert
pos	the 0-BASED index in the list of children, -1 means end of list (append)

Returns: error if any

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◆ gf_node_replace_child()

GF_Err gf_node_replace_child	(	GF_Node *	node,
		GF_ChildNodeItem **	container,
		s32	pos,
		GF_Node *	newNode
	)

removes and replace given child by specified node. If node is NULL, only delete target node

Warning: DOES NOT CHECK CHILD/PARENT type compatibility

Parameters

node	the target node to replace
container	the container list
pos	the 0-BASED index in the list of children, -1 means end of list (append)
newNode	the new node to use

Returns: error if any

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◆ gf_sg_vrml_parent_setup()

void gf_sg_vrml_parent_setup ( GF_Node * n )

setup a vrml parent

Parameters

n	the target node

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◆ gf_sg_vrml_parent_destroy()

void gf_sg_vrml_parent_destroy ( GF_Node * n )

resets all children in a vrml parent node (but does not destroy the node)

Parameters

n	the target node

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◆ gf_node_in_table_by_tag()

Bool gf_node_in_table_by_tag	(	u32	tag,
		u32	NDTType
	)

checks if a given node tag is in a given NDT table

Parameters

tag	the node tag
NDTType	the NDT type

Returns: GF_TRUE if node tag is in the NDT

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◆ gf_sg_vrml_get_field_type_name()

const char* gf_sg_vrml_get_field_type_name ( u32 FieldType )

gets field type name

Parameters

FieldType the field type

Returns: the field name

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◆ gf_sg_vrml_field_pointer_new()

void* gf_sg_vrml_field_pointer_new ( u32 FieldType )

allocates a new field

Note: GF_SG_VRML_MFNODE will return a pointer to a GF_List structure (eg GF_List *), GF_SG_VRML_SFNODE will return NULL

Parameters

FieldType the field type

Returns: the new field pointer

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◆ gf_sg_vrml_field_pointer_del()

void gf_sg_vrml_field_pointer_del	(	void *	field,
		u32	FieldType
	)

deletes a field pointer (including SF an,d MF nodes)

Parameters

field	the field pointer value
FieldType	the field type

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◆ gf_sg_vrml_mf_append()

GF_Err gf_sg_vrml_mf_append	(	void *	mf,
		u32	FieldType,
		void **	new_ptr
	)

adds at the end of an MF field

Parameters

mf	pointer to the MF field
FieldType	the MF field type
new_ptr	set to the allocated SF field slot - do not destroy

Returns: error if any

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◆ gf_sg_vrml_mf_remove()

GF_Err gf_sg_vrml_mf_remove	(	void *	mf,
		u32	FieldType,
		u32	RemoveFrom
	)

removes the desired item of an MF field

Parameters

mf	pointer to the MF field
FieldType	the MF field type
RemoveFrom	the 0-based index of item to remove

Returns: error if any

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◆ gf_sg_vrml_mf_alloc()

GF_Err gf_sg_vrml_mf_alloc	(	void *	mf,
		u32	FieldType,
		u32	NbItems
	)

allocates an MF array

Parameters

mf	pointer to the MF field
FieldType	the MF field type
NbItems	number of items to allocate

Returns: error if any

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◆ gf_sg_vrml_mf_get_item()

GF_Err gf_sg_vrml_mf_get_item	(	void *	mf,
		u32	FieldType,
		void **	new_ptr,
		u32	ItemPos
	)

gets the item in the MF array

Parameters

mf	pointer to the MF field
FieldType	the MF field type
new_ptr	set to the SF field slot - do not destroy
ItemPos	the 0-based index of item to remove

Returns: error if any

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◆ gf_sg_vrml_field_copy()

void gf_sg_vrml_field_copy	(	void *	dest,
		void *	orig,
		u32	FieldType
	)

copies a field content EXCEPT SF/MFNode. Pointers to field shall be used

Parameters

dest	pointer to the MF field
orig	pointer to the MF field
FieldType	the MF field type

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◆ gf_sg_vrml_field_clone()

void gf_sg_vrml_field_clone	(	void *	dest,
		void *	orig,
		u32	FieldType,
		GF_SceneGraph *	inScene
	)

clones a field content EXCEPT SF/MFNode. Pointers to field shall be used

Parameters

dest	pointer to the MF field
orig	pointer to the MF field
FieldType	the MF field type
inScene	target scene graph for SFCommandBuffers cloning

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◆ gf_sg_vrml_field_equal()

Bool gf_sg_vrml_field_equal	(	void *	dest,
		void *	orig,
		u32	FieldType
	)

indicates whether 2 fields of same type EXCEPT SF/MFNode are equal

Parameters

dest	pointer to the MF field
orig	pointer to the MF field
FieldType	the MF field type

Returns: GF_TRUE if fields equal

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◆ gf_sg_route_new()

GF_Route* gf_sg_route_new	(	GF_SceneGraph *	sg,
		GF_Node *	fromNode,
		u32	fromField,
		GF_Node *	toNode,
		u32	toField
	)

creates a new route

Note: routes are automatically destroyed if either the target or origin node of the route is destroyed

Parameters

sg	the target scene graph of the route
fromNode	the source node triggering the event out
fromField	the source field triggering the event out
toNode	the destination node accepting the event in
toField	the destination field accepting the event in

Returns: a new route object

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◆ gf_sg_route_del()

void gf_sg_route_del ( GF_Route * route )

destroys a route

Parameters

route the target route

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◆ gf_sg_route_del_by_id()

GF_Err gf_sg_route_del_by_id	(	GF_SceneGraph *	sg,
		u32	routeID
	)

destroys a route by ID

Parameters

sg	the scene graph of the route
routeID	the ID of the route to destroy

Returns: error if any

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◆ gf_sg_route_find()

GF_Route* gf_sg_route_find	(	GF_SceneGraph *	sg,
		u32	RouteID
	)

locate a route by ID

Parameters

sg	the scene graph of the route
RouteID	the ID of the route

Returns: the route object or NULL if not found

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◆ gf_sg_route_find_by_name()

GF_Route* gf_sg_route_find_by_name	(	GF_SceneGraph *	sg,
		char *	name
	)

locate a route by name

Parameters

sg	the scene graph of the route
name	the name of the route

Returns: the route object or NULL if not found

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◆ gf_sg_route_set_id()

GF_Err gf_sg_route_set_id	(	GF_Route *	route,
		u32	ID
	)

assigns a route ID

Parameters

route	the target route
ID	the ID to assign

Returns: error if any - fails if a route with same ID already exists

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◆ gf_sg_route_set_name()

GF_Err gf_sg_route_set_name	(	GF_Route *	route,
		char *	name
	)

assign a route name

Parameters

route	the target route
name	the name to assign

Returns: error if any - fails if a route with same name already exists

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◆ gf_sg_route_get_name()

char* gf_sg_route_get_name ( GF_Route * route )

gets route name

Parameters

route the target route

Returns: the route name or NULL if not set

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◆ gf_sg_get_next_available_route_id()

u32 gf_sg_get_next_available_route_id ( GF_SceneGraph * sg )

retuns next available RouteID

Note: this doesn't track inserted routes, that's the caller responsibility

Parameters

sg	the target scene graph of the route

Returns: the next available ID for routes

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◆ gf_sg_set_max_defined_route_id()

void gf_sg_set_max_defined_route_id	(	GF_SceneGraph *	sg,
		u32	ID
	)

sets max defined route ID used in the scene - used to handle RouteInsert commands note that this must be called by the user to be effective,; otherwise the max route ID is computed from the routes present in scene

Parameters

sg	the target scene graph of the route
ID	the value of the max defined route ID

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◆ gf_sg_route_new_to_callback()

void gf_sg_route_new_to_callback	(	GF_SceneGraph *	sg,
		GF_Node *	fromNode,
		u32	fromField,
		void *	cbk,
		void()(void param, GF_FieldInfo *from_field)	route_callback
	)

creates a new route from a node output to a given callback/function

Parameters

sg	the target scene graph of the route
fromNode	the source node emiting the event out
fromField	the source field emiting the event out
cbk	opaque data to pass to the callback
route_callback	route callback function to call

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◆ gf_sg_activate_routes()

void gf_sg_activate_routes ( GF_SceneGraph * sg )

activates all routes currently triggered - this follows the event cascade model of VRML/MPEG4:

routes are collected during eventOut generation
routes are activated. If eventOuts are generated during activation the cycle goes on.

A route cannot be activated twice in the same simulation tick, hence this function shall be called ONCE AND ONLY ONCE per simulation tick

Note that children scene graphs register their routes with the top-level graph, so only the main scene graph needs to be activated

Parameters

sg	the target scene graph of the route

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◆ gf_sg_get_next_available_proto_id()

u32 gf_sg_get_next_available_proto_id ( GF_SceneGraph * sg )

retuns next available proto ID

Parameters

sg	the target scene graph of the proto

Returns: the next available proto ID

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◆ gf_sg_proto_new()

GF_Proto* gf_sg_proto_new	(	GF_SceneGraph *	sg,
		u32	ProtoID,
		char *	name,
		Bool	unregistered
	)

constructs a new proto identified by ID/name in the given scene 2 protos in the same scene may not have the same ID/name

Parameters

sg	the target scene graph in which the proto is created
ProtoID	ID of the proto to create
name	name of the proto to create
unregistered	if GF_TRUE, the proto is not stored in the graph main proto list but in an alternate list (used for memory handling of scene graph only). Several protos with the same ID/Name can be stored unregistered

Returns: a new proto object

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◆ gf_sg_proto_del()

GF_Err gf_sg_proto_del ( GF_Proto * proto )

destroys a proto - can be used even if instances of the proto are still present

Parameters

proto the target proto

Returns: error if any

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◆ gf_sg_proto_get_graph()

GF_SceneGraph* gf_sg_proto_get_graph ( GF_Proto * proto )

returns the graph associated with this proto. Such a graph cannot be used for rendering but is needed during construction of proto dictionaries in case of nested protos

Parameters

proto the target proto

Returns: associated scene graph proto the target proto

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◆ gf_sg_proto_add_node_code()

GF_Err gf_sg_proto_add_node_code	(	GF_Proto *	proto,
		GF_Node *	n
	)

adds node code - a proto is build of several nodes, the first node is used for rendering and the others are kept private. This set of nodes is referred to as the proto "node code"

Parameters

proto	the target proto
n	the node to add to the proto code

Returns: error if any

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◆ gf_sg_proto_get_field_count()

u32 gf_sg_proto_get_field_count ( GF_Proto * proto )

gets number of field in the proto interface

Parameters

proto the target proto

Returns: the number of fields

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◆ gf_sg_proto_field_find_by_name()

GF_ProtoFieldInterface* gf_sg_proto_field_find_by_name	(	GF_Proto *	proto,
		char *	fieldName
	)

locates a field declaration by name

Parameters

proto	the target proto
fieldName	the name of the field

Returns: the proto field interface or NULL if not found

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◆ gf_sg_proto_field_find()

GF_ProtoFieldInterface* gf_sg_proto_field_find	(	GF_Proto *	proto,
		u32	fieldIndex
	)

locates field declaration by index

Parameters

proto	the target proto
fieldIndex	0-based index of the field to query

Returns: the proto field interface or NULL if not found

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◆ gf_sg_proto_field_new()

GF_ProtoFieldInterface* gf_sg_proto_field_new	(	GF_Proto *	proto,
		u32	fieldType,
		u32	eventType,
		char *	fieldName
	)

creates a new field declaration in the proto. of given fieldtype and eventType fieldName can be NULL, if so the name will be fieldN, N being the index of the created field

Parameters

proto	the target proto
fieldType	the data type of the field to create
eventType	the event type of the field to create
fieldName	the name of the field to create (may be NULL)

Returns: the new proto field interface

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◆ gf_sg_proto_field_set_ised()

GF_Err gf_sg_proto_field_set_ised	(	GF_Proto *	proto,
		u32	protoFieldIndex,
		GF_Node *	node,
		u32	nodeFieldIndex
	)

assigns the node field to a field of the proto (the node field IS the proto field) the node shall be a node of the proto scenegraph, and the fieldtype/eventType of both fields shall match (except SF/MFString and MF/SFURL which are allowed) due to BIFS semantics

Parameters

proto	the target proto
protoFieldIndex	the proto field index to assign
node	the node (shall be part of the proto node code) to link to
nodeFieldIndex	the field index of the node to link to

Returns: error if any

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◆ gf_sg_proto_field_get_field()

GF_Err gf_sg_proto_field_get_field	(	GF_ProtoFieldInterface *	field,
		GF_FieldInfo *	info
	)

returns field info of the field - this is typically used to setup the default value of the field

Parameters

field	the proto field interface to query
info	filled with the proto field interface info

Returns: error if any

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◆ gf_sg_proto_create_instance()

GF_Node* gf_sg_proto_create_instance	(	GF_SceneGraph *	sg,
		GF_Proto *	proto
	)

creates the proto instance without the proto code

Parameters

sg	the target scene graph of the node
proto	the proto to instanciate

Returns: the new prototype instance node

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◆ gf_sg_proto_load_code()

GF_Err gf_sg_proto_load_code ( GF_Node * proto_inst )

loads code in this instance - all subprotos are automatically created, thus you must only instantiate top-level protos. VRML/BIFS doesn't allow for non top-level proto instanciation in the main graph All nodes created in this proto will be forwarded to the app for initialization

Parameters

proto_inst the proto instance to load

Returns: error if any

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◆ gf_sg_find_proto()

GF_Proto* gf_sg_find_proto	(	GF_SceneGraph *	sg,
		u32	ProtoID,
		char *	name
	)

locates a prototype definition by ID or by name. when looking by name, ID is ignored

Parameters

sg	the target scene graph of the proto
ProtoID	the ID of the proto to locate
name	the name of the proto to locate

Returns: the proto node or NULL if not found

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◆ gf_sg_delete_all_protos()

GF_Err gf_sg_delete_all_protos ( GF_SceneGraph * sg )

deletes all protos in given scene - does NOT delete instances of protos, only the proto object is destroyed

Parameters

sg	the target scene graph

Returns: error if any

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◆ gf_node_get_proto()

GF_Proto* gf_node_get_proto ( GF_Node * node )

gets proto of a prototype instance node

Parameters

node	the target prototype instance node

Returns: the proto node or NULL if the node is not a prototype instance or the source proto was destroyed

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◆ gf_sg_proto_get_id()

u32 gf_sg_proto_get_id ( GF_Proto * proto )

returns the ID of a proto

Parameters

proto the target proto

Returns: the proto ID

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◆ gf_sg_proto_get_class_name()

const char* gf_sg_proto_get_class_name ( GF_Proto * proto )

returns the name of a proto

Parameters

proto the target proto

Returns: the proto name

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◆ gf_sg_proto_field_is_sftime_offset()

Bool gf_sg_proto_field_is_sftime_offset	(	GF_Node *	node,
		GF_FieldInfo *	field
	)

checks if a proto instance field is an SFTime routed to a startTime/stopTime field in the proto code (MPEG-4 specific for updates)

Parameters

node	the target prototype instance node
field	the target field info

Returns: GF_TRUE if this is the case

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◆ gf_sg_proto_instance_set_ised()

GF_Err gf_sg_proto_instance_set_ised	(	GF_Node *	protoinst,
		u32	protoFieldIndex,
		GF_Node *	node,
		u32	nodeFieldIndex
	)

sets an ISed (route between proto instance and internal proto code) field in a proto instance (not a proto) - this is needed with dynamic node creation inside a proto instance (conditionals)

Parameters

protoinst	the target prototype instance node
protoFieldIndex	field index in prototype instance node
node	the target node
nodeFieldIndex	field index in the target node

Returns: error if any

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◆ gf_node_get_proto_root()

GF_Node* gf_node_get_proto_root ( GF_Node * node )

returns root node (the one and only one being traversed) of this proto instance if any

Parameters

node	the target prototype instance node

Returns: the root node of the proto code - may be NULL

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◆ gf_sg_proto_mark_field_loaded()

void gf_sg_proto_mark_field_loaded	(	GF_Node *	node,
		GF_FieldInfo *	info
	)

indicates proto field has been parsed and its value is valid - this is needed for externProtos not specifying default values

Parameters

node	the target prototype instance node
info	the target field info

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◆ gf_sg_set_proto_loader()

void gf_sg_set_proto_loader	(	GF_SceneGraph *	sg,
		GF_SceneGraph ()(void SceneCallback, MFURL lib_url)	GetExternProtoLib
	)

sets proto loader callback - callback user data is the same as simulation time callback

GetExternProtoLib is a pointer to the proto lib loader - this callback shall return the LPSCENEGRAPH of the extern proto lib if found and loaded, NULL if not found and GF_SG_INTERNAL_PROTO for internal hardcoded protos (extensions of MPEG-4 scene graph used for module deveopment)

Parameters

sg	the target scene graph
GetExternProtoLib	the callback function

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◆ gf_sg_proto_get_extern_url()

MFURL* gf_sg_proto_get_extern_url ( GF_Proto * proto )

gets a pointer to the MF URL field for externProto info - DO NOT TOUCH THIS FIELD

Parameters

proto the target proto field

Returns: the MFURL associated with an extern proto, or NULL if proto is not an extern proto

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◆ gf_sg_script_field_new()

GF_ScriptField* gf_sg_script_field_new	(	GF_Node *	script,
		u32	eventType,
		u32	fieldType,
		const char *	name
	)

creates new sript field - script fields are dynamically added to the node, and thus can be accessed through the same functions as other GF_Node fields

Parameters

script	the script node
eventType	the event type of the new field
fieldType	the data type of the new field
name	the name of the new field

Returns: a new scritp field

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◆ gf_sg_script_field_get_info()

GF_Err gf_sg_script_field_get_info	(	GF_ScriptField *	field,
		GF_FieldInfo *	info
	)

retrieves field info of a script field object, useful to get the field index

Parameters

field	the script field to query
info	filled with the field info

Returns: error if any

◆ gf_sg_script_event_in()

void gf_sg_script_event_in	(	GF_Node *	script,
		GF_FieldInfo *	in_field
	)

activates eventIn for script node - needed for BIFS field replace

Parameters

script	the target script node
in_field	the field info of the activated event in field

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◆ gf_node_event_out()

void gf_node_event_out	(	GF_Node *	n,
		u32	FieldIndex
	)

signals eventOut has been set by field index

Note: Routes are automatically triggered when the event is signaled

Parameters

n	the target node emitin the event
FieldIndex	the field index emiting the event

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◆ gf_node_event_out_str()

void gf_node_event_out_str	(	GF_Node *	n,
		const char *	eventName
	)

signals eventOut has been set by event name.

Note: Routes are automatically triggered when the event is signaled

Parameters

n	the target node emitin the event
eventName	the name of the field emiting the event

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◆ gf_node_mpeg4_type_by_class_name()

u32 gf_node_mpeg4_type_by_class_name ( const char * node_name )

gets MPEG-4 / VRML node tag by class name

Parameters

node_name the node name

Returns: the node tag

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◆ gf_node_x3d_type_by_class_name()

u32 gf_node_x3d_type_by_class_name ( const char * node_name )

gets X3D node tag by class name

Parameters

node_name the node name

Returns: the node tag

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◆ gf_node_proto_is_grouping()

Bool gf_node_proto_is_grouping ( GF_Node * n )

check if a hardcoded prototype node acts as a grouping node

Parameters

n	the target prototype instance node

Returns: GF_TRUE if acting as a grouping node

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◆ gf_node_proto_set_grouping()

GF_Err gf_node_proto_set_grouping ( GF_Node * n )

tags a hardcoded proto as being a grouping node

Parameters

n	the target prototype instance node

Returns: error if any

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◆ gf_node_set_proto_eventin_handler()

GF_Err gf_node_set_proto_eventin_handler	(	GF_Node *	n,
		u32	fieldIndex,
		void()(GF_Node pThis, struct _route *route)	event_in_cbk
	)

assigns callback to an eventIn field of an hardcoded proto

Parameters

n	the target prototype instance node
fieldIndex	the target field index
event_in_cbk	the event callback function

Returns: error if any

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Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Data Structure Documentation

◆ SFString

◆ SFColor

◆ SFColorRGBA

◆ SFURL

◆ SFVec2d

◆ SFVec3d

◆ SFImage

◆ SFCommandBuffer

◆ SFScript

◆ SFAttrRef

◆ GenMFField

◆ MFInt32

◆ MFInt

◆ MFFloat

◆ MFDouble

◆ MFBool

◆ MFColor

◆ MFColorRGBA

◆ MFRotation

◆ MFTime

◆ MFVec2f

◆ MFVec2d

◆ MFVec3f

◆ MFVec3d

◆ MFVec4f

◆ MFURL

◆ MFString

◆ MFScript

◆ MFAttrRef

◆ GF_VRMLParent

Macro Definition Documentation

◆ MPEG4_RESERVED_NDT

◆ GF_SG_INTERNAL_PROTO

◆ VRML_CHILDREN

Typedef Documentation

◆ SFBool

◆ SFInt32

◆ SFInt

◆ SFFloat

◆ SFDouble

◆ SFTime

◆ SFVec2f

◆ SFVec3f

◆ SFRotation

◆ SFVec4f

Enumeration Type Documentation

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

Function Documentation

◆ gf_sg_vrml_get_event_type_name()

◆ gf_node_get_num_fields_in_mode()

◆ gf_sg_sfcolor_to_rgba()

◆ gf_sg_vrml_is_sf_field()

◆ gf_sg_vrml_get_sf_type()

◆ gf_sg_vrml_mf_insert()

◆ gf_sg_vrml_mf_reset()

◆ gf_sg_mfurl_del()

◆ gf_sg_vrml_copy_mfurl()

◆ gf_sg_sfrotation_interpolate()

◆ gf_node_insert_child()

◆ gf_node_replace_child()

◆ gf_sg_vrml_parent_setup()

◆ gf_sg_vrml_parent_destroy()

◆ gf_node_in_table_by_tag()

◆ gf_sg_vrml_get_field_type_name()

◆ gf_sg_vrml_field_pointer_new()

◆ gf_sg_vrml_field_pointer_del()

◆ gf_sg_vrml_mf_append()

◆ gf_sg_vrml_mf_remove()

◆ gf_sg_vrml_mf_alloc()