Coin: SoProto Class Reference

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SoProto Class Reference

The SoProto class handles PROTO definitions. More...

`#include <Inventor/misc/SoProto.h>`

Inheritance diagram for SoProto:

## Public Member Functions
| SoProto (const SbBool externproto=FALSE)
virtual SoType | getTypeId (void) const
| Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and "downward" casting.
SoProtoInstance * | createProtoInstance (void)
void | addISReference (SoNode *container, const SbName &fieldname, const SbName &interfacename)
SbName | findISReference (const SoFieldContainer *container, const SbName &fieldname)
void | addReference (const SbName &name, SoBase *base)
void | removeReference (const SbName &name)
SoBase * | findReference (const SbName &name) const
void | addRoute (const SbName &fromnode, const SbName &fromfield, const SbName &tonode, const SbName &tofield)
SbName | getProtoName (void) const
virtual SbBool | readInstance (SoInput *input, unsigned short flags)
virtual void | write (SoWriteAction *action)
Public Member Functions inherited from SoNode
void | setOverride (const SbBool state)
SbBool | isOverride (void) const
void | setNodeType (const NodeType type)
NodeType | getNodeType (void) const
virtual SoNode * | copy (SbBool copyconnections=FALSE) const
virtual SbBool | affectsState (void) const
virtual void | doAction (SoAction *action)
virtual void | GLRender (SoGLRenderAction *action)
virtual void | GLRenderBelowPath (SoGLRenderAction *action)
virtual void | GLRenderInPath (SoGLRenderAction *action)
virtual void | GLRenderOffPath (SoGLRenderAction *action)
virtual void | callback (SoCallbackAction *action)
virtual void | getBoundingBox (SoGetBoundingBoxAction *action)
virtual void | getMatrix (SoGetMatrixAction *action)
virtual void | handleEvent (SoHandleEventAction *action)
virtual void | pick (SoPickAction *action)
virtual void | rayPick (SoRayPickAction *action)
virtual void | search (SoSearchAction *action)
virtual void | audioRender (SoAudioRenderAction *action)
virtual void | getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual void | grabEventsSetup (void)
virtual void | grabEventsCleanup (void)
virtual void | startNotify (void)
virtual void | notify (SoNotList *l)
SbUniqueId | getNodeId (void) const
virtual SoChildList * | getChildren (void) const
virtual void | writeInstance (SoOutput *out)
virtual SoNode * | addToCopyDict (void) const
virtual void | copyContents (const SoFieldContainer *from, SbBool copyconnections)
virtual SoFieldContainer * | copyThroughConnection (void) const
Public Member Functions inherited from SoFieldContainer
void | setToDefaults (void)
SbBool | hasDefaultValues (void) const
SbBool | fieldsAreEqual (const SoFieldContainer *container) const
void | copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)
SbBool | set (const char *const fielddata)
void | get (SbString &fielddata)
virtual int | getFields (SoFieldList &l) const
virtual int | getAllFields (SoFieldList &l) const
virtual SoField * | getField (const SbName &name) const
virtual SoField * | getEventIn (const SbName &name) const
virtual SoField * | getEventOut (const SbName &name) const
SbBool | getFieldName (const SoField *const field, SbName &name) const
SbBool | enableNotify (const SbBool flag)
SbBool | isNotifyEnabled (void) const
SbBool | set (const char *fielddata, SoInput *input)
void | get (SbString &fielddata, SoOutput *out)
virtual SbBool | validateNewFieldValue (SoField *field, void *newval)
virtual void | addWriteReference (SoOutput *out, SbBool isfromfield=FALSE)
SbBool | getIsBuiltIn (void) const
virtual const SoFieldData * | getFieldData (void) const
virtual void | getFieldsMemorySize (size_t &managed, size_t &unmanaged) const
void | setUserData (void *userdata) const
void * | getUserData (void) const
Public Member Functions inherited from SoBase
void | ref (void) const
void | unref (void) const
void | unrefNoDelete (void) const
int32_t | getRefCount (void) const
void | touch (void)
SbBool | isOfType (SoType type) const
| Returns `TRUE` if the type of this object is either of the same type or inherited from type.
virtual SbName | getName (void) const
virtual void | setName (const SbName &newname)
void | addAuditor (void *const auditor, const SoNotRec::Type type)
void | removeAuditor (void *const auditor, const SoNotRec::Type type)
const SoAuditorList & | getAuditors (void) const
SbBool | shouldWrite (void)
void | assertAlive (void) const

## Static Public Member Functions
static void | setFetchExternProtoCallback (SoFetchExternProtoCB *cb, void *closure)
static SoType | getClassTypeId (void)
static SoProto * | findProto (const SbName &name)
static void | initClass (void)
Static Public Member Functions inherited from SoNode
static uint32_t | getCompatibilityTypes (const SoType &nodetype)
static SoType | getClassTypeId (void)
static SoNode * | getByName (const SbName &name)
static int | getByName (const SbName &name, SoNodeList &l)
static void | initClass (void)
| Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
static void | initClasses (void)
static SbUniqueId | getNextNodeId (void)
static int | getActionMethodIndex (const SoType type)
static void | getBoundingBoxS (SoAction *action, SoNode *node)
static void | GLRenderS (SoAction *action, SoNode *node)
static void | callbackS (SoAction *action, SoNode *node)
static void | getMatrixS (SoAction *action, SoNode *node)
static void | handleEventS (SoAction *action, SoNode *node)
static void | pickS (SoAction *action, SoNode *node)
static void | rayPickS (SoAction *action, SoNode *node)
static void | searchS (SoAction *action, SoNode *node)
static void | writeS (SoAction *action, SoNode *node)
static void | audioRenderS (SoAction *action, SoNode *node)
static void | getPrimitiveCountS (SoAction *action, SoNode *node)
Static Public Member Functions inherited from SoFieldContainer
static void | initClass (void)
| Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
static SoType | getClassTypeId (void)
| This static method returns the SoType object associated with objects of this class.
static void | cleanupClass (void)
static void | initCopyDict (void)
static void | addCopy (const SoFieldContainer *orig, const SoFieldContainer *copy)
static SoFieldContainer * | checkCopy (const SoFieldContainer *orig)
static SoFieldContainer * | findCopy (const SoFieldContainer *orig, const SbBool copyconnections)
static void | copyDone (void)
Static Public Member Functions inherited from SoBase
static void | initClass (void)
| Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
static SoType | getClassTypeId (void)
| This static method returns the SoType object associated with objects of this class.
static void | addName (SoBase *const base, const char *const name)
static void | removeName (SoBase *const base, const char *const name)
static void | incrementCurrentWriteCounter (void)
static void | decrementCurrentWriteCounter (void)
static SoBase * | getNamedBase (const SbName &name, SoType type)
static int | getNamedBases (const SbName &name, SoBaseList &baselist, SoType type)
static SbBool | read (SoInput *input, SoBase *&base, SoType expectedtype)
static void | setInstancePrefix (const SbString &c)
static void | setTraceRefs (SbBool trace)
static SbBool | getTraceRefs (void)
static SbBool | connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)
static SbBool | readRoute (SoInput *input)

## Protected Member Functions
virtual | ~SoProto ()
virtual void | destroy (void)
Protected Member Functions inherited from SoNode
| SoNode (void)
virtual | ~SoNode ()
Protected Member Functions inherited from SoFieldContainer
| SoFieldContainer (void)
virtual | ~SoFieldContainer ()
Protected Member Functions inherited from SoBase
| SoBase (void)
virtual | ~SoBase ()
SbBool | hasMultipleWriteRefs (void) const
SbBool | writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const
void | writeFooter (SoOutput *out) const
virtual const char * | getFileFormatName (void) const
virtual SoNotRec | createNotRec (void)

## Additional Inherited Members
Public Types inherited from SoNode
enum | NodeType { INVENTOR = 0x0000 , VRML1 = 0x0001 , VRML2 = 0x0002 , INVENTOR_1 = 0x0004 , INVENTOR_2_0 = 0x0008 , INVENTOR_2_1 = 0x0010 , INVENTOR_2_5 = 0x0020 , INVENTOR_2_6 = 0x0040 , COIN_1_0 = 0x0080 , COIN_2_0 = 0x0100 , EXTENSION = 0x0200 , COIN_2_2 = 0x0400 , COIN_2_3 = 0x0800 , COIN_2_4 = 0x1000 , INVENTOR_5_0 = 0x2000 , COIN_2_5 = 0x4000 , COIN_3_0 = 0x8000 , INVENTOR_6_0 = 0x10000 , COIN_4_0 = 0x20000 }
Protected Types inherited from SoBase
enum | BaseFlags { IS_ENGINE = 0x01 , IS_GROUP = 0x02 }
Static Protected Member Functions inherited from SoNode
static const SoFieldData ** | getFieldDataPtr (void)
static void | setNextActionMethodIndex (int index)
static int | getNextActionMethodIndex (void)
static void | incNextActionMethodIndex (void)
static void | setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask)
Static Protected Member Functions inherited from SoBase
static uint32_t | getCurrentWriteCounter (void)
static void | staticDataLock (void)
static void | staticDataUnlock (void)
Protected Attributes inherited from SoNode
SbUniqueId | uniqueId
Protected Attributes inherited from SoFieldContainer
SbBool | isBuiltIn
Static Protected Attributes inherited from SoNode
static SbUniqueId | nextUniqueId = 1
static int | nextActionMethodIndex = 0

## Detailed Description

The SoProto class handles PROTO definitions.

SoProto and SoProtoInstance are mostly internal classes. They're designed to read and handle VRML97 PROTOs. However, it's possible to define your PROTOs in C++. You must define your PROTO in a char array, and read that char array using SoInput::setBuffer() and SoDB::readAllVRML(). Example:

char myproto[] =
"#VRML V2.0 utf8\n"
"PROTO ColorCube [\n"
" field SFColor color 1 1 1\n"
" field SFVec3f size 1 1 1\n"
"]\n"
"{\n"
" Shape {\n"
" appearance Appearance {\n"
" material Material {\n"
" diffuseColor IS color\n"
" }\n"
" }\n"
" geometry Box { size IS size }\n"
" }\n"
"}\n"
"ColorCube { color 1 0 0 size 2 1 1 }\n";
SoInput in;
in.setBuffer(myproto, strlen(myproto));
SoVRMLGroup * protoroot = SoDB::readAllVRML(&in);
SoDB::readAllVRML
static SoVRMLGroup * readAllVRML(SoInput *input)
Definition SoDB.cpp:696
SoInput
The SoInput class is an abstraction of file import functionality.
Definition SoInput.h:61
SoInput::setBuffer
virtual void setBuffer(const void *bufpointer, size_t bufsize)
Definition SoInput.cpp:745
SoVRMLGroup
The SoVRMLGroup class is used for grouping VRML nodes.
Definition SoVRMLGroup.h:45

Now you can create new instances of the ColorCube PROTO using SoProto::findProto() and SoProto::createProtoInstance(). If you want to insert PROTO instances into your scene graph, you should insert the node returned from SoProtoInstance::getRootNode().

See http://www.web3d.org/documents/specifications/14772/V2.0/part1/concepts.html#4.8 for more information about PROTOs in VRML97.

## Constructor & Destructor Documentation

## ◆ SoProto()

SoProto::SoProto | ( | const SbBool | externproto = FALSE | ) |

Constructor.

## ◆ ~SoProto()

SoProto::~SoProto | ( |  | ) |
| protectedvirtual

Destructor.

## Member Function Documentation

## ◆ getTypeId()

SoType SoProto::getTypeId | ( | void |  | ) | const
| virtual

Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and "downward" casting.

Usage example:

void foo(SoNode * node)
{
if (node->getTypeId() == SoFile::getClassTypeId()) {
SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type
}
}
SoBase::getTypeId
virtual SoType getTypeId(void) const =0
Returns the type identification of an object derived from a class inheriting SoBase....
SoFile
The SoFile class is node container for another model file.
Definition SoFile.h:43
SoFile::getClassTypeId
static SoType getClassTypeId(void)
Definition SoFile.cpp:100
SoNode::SoNode
SoNode(void)
Definition SoNode.cpp:417

For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the predefined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.

For more information on writing Coin extensions, see the class documentation of the top level superclasses for the various class groups.

Implements SoBase.

## ◆ findProto()

SoProto * SoProto::findProto | ( | const SbName & | name | ) |
| static

Returns the PROTO definition named name or NULL if not found.

## ◆ createProtoInstance()

SoProtoInstance * SoProto::createProtoInstance | ( | void |  | ) |

Creates an instance of the PROTO.

## ◆ addISReference()

void SoProto::addISReference | ( | SoNode * | container,
|  | const SbName & | fieldname,
|  | const SbName & | interfacename )

Adds an IS reference for this PROTO definition.

## ◆ findISReference()

SbName SoProto::findISReference | ( | const SoFieldContainer * | container,
|  | const SbName & | fieldname )

If container is a PROTO definition node with an IS interface field named fieldname, return the interface name, otherwise return an empty SbName.

## ◆ addReference()

void SoProto::addReference | ( | const SbName & | name,
|  | SoBase * | base )

Adds a reference for this PROTO definition.

## ◆ removeReference()

void SoProto::removeReference | ( | const SbName & | name | ) |

Removes a reference for this PROTO definition.

## ◆ findReference()

SoBase * SoProto::findReference | ( | const SbName & | name | ) | const

Finds a reference for this PROTO definition.

## ◆ addRoute()

void SoProto::addRoute | ( | const SbName & | fromnode,
|  | const SbName & | fromfield,
|  | const SbName & | tonode,
|  | const SbName & | tofield )

Adds a ROUTE for this PROTO definition.

## ◆ getProtoName()

SbName SoProto::getProtoName | ( | void |  | ) | const

Returns the PROTO name.

## ◆ readInstance()

SbBool SoProto::readInstance | ( | SoInput * | in,
|  | unsigned short | flags )
| virtual

This method is mainly intended for internal use during file import operations.

It reads a definition of an instance from the input stream in. The input stream state points to the start of a serialized / persistent representation of an instance of this class type.

`TRUE` or `FALSE` is returned, depending on if the instantiation and configuration of the new object of this class type went OK or not. The import process should be robust and handle corrupted input streams by returning `FALSE`.

flags is used internally during binary import when reading user extension nodes, group nodes or engines.

Reimplemented from SoNode.

## ◆ write()

void SoProto::write | ( | SoWriteAction * | action | ) |
| virtual

Action method for SoWriteAction.

Writes out a node object, and any connected nodes, engines etc, if necessary.

Reimplemented from SoNode.

## ◆ destroy()

void SoProto::destroy | ( | void |  | ) |
| protectedvirtual

Cleans up all hanging references to and from this instance, and then commits suicide.

Called automatically when the reference count goes to zero.

Reimplemented from SoBase.

The documentation for this class was generated from the following files:

- SoProto.h
- SoProto.cpp