SoWWWInline(3)

NAME
SoWWWInline - The SoWWWInline class is a node used to include data from an URL.

SYNOPSIS

#include <Inventor/nodes/SoWWWInline.h>

Inherits SoNode.

  Public Types
enum BboxVisibility { NEVER, UNTIL_LOADED, ALWAYS }
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 }

  Public Member Functions
virtual SoType getTypeId (void) const
SoWWWInline (void)
void setFullURLName (const SbString &url)
const SbString & getFullURLName (void)
SoGroup * copyChildren (void) const
void requestURLData (void)
SbBool isURLDataRequested (void) const
SbBool isURLDataHere (void) const
void cancelURLDataRequest (void)
void setChildData (SoNode *urldata)
SoNode * getChildData (void) const
virtual SoChildList * getChildren (void) const
virtual void doAction (SoAction *action)
virtual void doActionOnKidsOrBox (SoAction *action)
virtual void callback (SoCallbackAction *action)
virtual void GLRender (SoGLRenderAction *action)
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
virtual void getMatrix (SoGetMatrixAction *action)
virtual void handleEvent (SoHandleEventAction *action)
virtual void search (SoSearchAction *action)
virtual void pick (SoPickAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual void audioRender (SoAudioRenderAction *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 GLRenderBelowPath (SoGLRenderAction *action)
virtual void GLRenderInPath (SoGLRenderAction *action)
virtual void GLRenderOffPath (SoGLRenderAction *action)
virtual void rayPick (SoRayPickAction *action)
virtual void write (SoWriteAction *action)
virtual void grabEventsSetup (void)
virtual void grabEventsCleanup (void)
virtual void startNotify (void)
virtual void notify (SoNotList *l)
SbUniqueId getNodeId (void) const
virtual void writeInstance (SoOutput *out)
virtual SoNode * addToCopyDict (void) const
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 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 SoType getClassTypeId (void)
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 setFetchURLCallBack (SoWWWInlineFetchURLCB *f, void *userdata)
static void setBoundingBoxVisibility (BboxVisibility b)
static BboxVisibility getBoundingBoxVisibility (void)
static void setBoundingBoxColor (SbColor &c)
static const SbColor & getBoundingBoxColor (void)
static void setReadAsSoFile (SbBool onoff)
static SbBool getReadAsSoFile (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)

  Public Attributes
SoSFString name
SoSFVec3f bboxCenter
SoSFVec3f bboxSize
SoSFNode alternateRep

  Protected Member Functions
virtual const SoFieldData * getFieldData (void) const
virtual ~SoWWWInline ()
virtual void addBoundingBoxChild (SbVec3f center, SbVec3f size)
virtual SbBool readInstance (SoInput *in, unsigned short flags)
virtual void copyContents (const SoFieldContainer *fromfC, SbBool copyconnections)
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 ()
virtual void destroy (void)
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)

  Static Protected Member Functions
static const SoFieldData ** getFieldDataPtr (void)
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)

  Additional Inherited Members
Protected Types inherited from SoBase
enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }
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 SoWWWInline class is a node used to include data from an URL. If the URL is not a local file, the application is responsible for supplying a callback to a function which will fetch the data of the URL.

As long as no data have been imported, the scene graph representation of the node will be that of a bounding box enclosing the geometry we expect to fetch from the URL. The application is naturally also responsible for specifying the expected dimensions of the geometry.

If FetchURLCallBack isn't set, the alternateRep will be rendered instead.

FILE FORMAT/DEFAULTS:

WWWInline {
    name "<Undefined file>"
    bboxCenter 0 0 0
    bboxSize 0 0 0
    alternateRep NULL
}

Since
    SGI Inventor 2.1

    Coin 1.0

Member Enumeration Documentation

  enum SoWWWInline::BboxVisibility
Used to enumerate bounding box rendering strategies.

Enumerator

NEVER
    Never render bounding box.

UNTIL_LOADED
    Render bounding box until children are loaded.

ALWAYS
    Always render bounding box, event when children are loaded.

Constructor & Destructor Documentation

  SoWWWInline::SoWWWInline (void )
Constructor.

  SoWWWInline::~SoWWWInline () [protected], [virtual]
Destructor.

Member Function Documentation

  SoType SoWWWInline::getClassTypeId (void ) [static]
This static method returns the SoType object associated with objects of this class.

  SoType SoWWWInline::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.

Implements SoBase.

  const SoFieldData ** SoWWWInline::getFieldDataPtr (void ) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
 Returns the SoFieldData class which holds information about fields in this node.

  const SoFieldData * SoWWWInline::getFieldData (void ) const [protected], [virtual]
Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoFieldContainer.

  void SoWWWInline::setFullURLName (const SbString & url)
If the SoWWWInline::name field specifies a relative URL, use this method to name the complete URL.

  const SbString & SoWWWInline::getFullURLName (void )
If a full URL has been set with the SoWWWInline::setFullURLName() method, return it. If not, returns the value of the SoWWWInline::name field.

  SoGroup * SoWWWInline::copyChildren (void ) const
Returns a subgraph with a deep copy of the children of this node.

  void SoWWWInline::requestURLData (void )
Start requesting URL data. This might trigger a callback to the callback set in SoWWWInline::setFetchURLCallBack().

  SbBool SoWWWInline::isURLDataRequested (void ) const
Returns TRUE if SoWWWInline::requestURLData() has been called without being canceled by SoWWWInline::cancelURLData().

  SbBool SoWWWInline::isURLDataHere (void ) const
Return TRUE if the current child data have been read from file/URL and set using setChildData().

  void SoWWWInline::cancelURLDataRequest (void )
Can be used to signal that URL loading has been canceled. You should use this method if you intend to request URL data more than once.

  void SoWWWInline::setChildData (SoNode * urldata)
Manually set up the subgraph for this node. This should be used by the application to set the data that was read from the file/URL.

  SoNode * SoWWWInline::getChildData (void ) const
Returns the child data for this node. This can be data read from a file, from an URL, from the contents of SoWWWInline::alternateRep or data that was manually set with SoWWWInline::setChildData().

  SoChildList * SoWWWInline::getChildren (void ) const [virtual]
Returns the child list with the child data for this node.

Reimplemented from SoNode.

  void SoWWWInline::setFetchURLCallBack (SoWWWInlineFetchURLCB * f, void * userdata) [static]
Sets the URL fetch callback. This will be used in SoWWWInline::readInstance() or when the user calls SoWWWInline::requestURLData(). FIXME: Shouldn't called on readInstance(), only when we need to render the node (or calculate the bbox if we don't have one). kintel 20060203.

  void SoWWWInline::setBoundingBoxVisibility (BboxVisibility b) [static]
Sets the bounding box visibility strategy. The default is UNTIL_LOADED.

  SoWWWInline::BboxVisibility SoWWWInline::getBoundingBoxVisibility (void ) [static]
Returns the bounding box visibility.

  void SoWWWInline::setBoundingBoxColor (SbColor & c) [static]
Sets the bounding box color.

  const SbColor & SoWWWInline::getBoundingBoxColor (void ) [static]
Returns the bounding box color.

  void SoWWWInline::setReadAsSoFile (SbBool onoff) [static]
Sets whether children should be read from a local file, in the same manner as SoFile children are read.

If this is set to TRUE, the URL must point to a file on the local file system, as can be accessed by the standard C library fopen() call.

  SbBool SoWWWInline::getReadAsSoFile (void ) [static]
Returns if children should be read from local files.

See also
    setReadAsSoFile()

  void SoWWWInline::doAction (SoAction * action) [virtual]
This function performs the typical operation of a node for any action.

Reimplemented from SoNode.

  void SoWWWInline::doActionOnKidsOrBox (SoAction * action) [virtual]
This method should probably have been private in Open Inventor API. It is obsoleted in Coin. Let us know if you need it.

  void SoWWWInline::callback (SoCallbackAction * action) [virtual]
Action method for SoCallbackAction.

Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph.

Reimplemented from SoNode.

  void SoWWWInline::GLRender (SoGLRenderAction * action) [virtual]
Action method for the SoGLRenderAction.

This is called during rendering traversals. Nodes influencing the rendering state in any way or want to throw geometry primitives at OpenGL override this method.

Reimplemented from SoNode.

  void SoWWWInline::getBoundingBox (SoGetBoundingBoxAction * action) [virtual]
Action method for the SoGetBoundingBoxAction.

Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.

Nodes influencing how geometry nodes calculate their bounding box also override this method to change the relevant state variables.

Reimplemented from SoNode.

  void SoWWWInline::getMatrix (SoGetMatrixAction * action) [virtual]
Action method for SoGetMatrixAction.

Updates action by accumulating with the transformation matrix of this node (if any).

Reimplemented from SoNode.

  void SoWWWInline::handleEvent (SoHandleEventAction * action) [virtual]
Action method for SoHandleEventAction.

Inspects the event data from action, and processes it if it is something which this node should react to.

Nodes influencing relevant state variables for how event handling is done also override this method.

Reimplemented from SoNode.

  void SoWWWInline::search (SoSearchAction * action) [virtual]
Action method for SoSearchAction.

Compares the search criteria from the action to see if this node is a match. Searching is done by matching up all criteria set up in the SoSearchAction -- if any of the requested criteria is a miss, the search is not deemed successful for the node.

See also
    SoSearchAction

Reimplemented from SoNode.

  void SoWWWInline::pick (SoPickAction * action) [virtual]
Action method for SoPickAction.

Does common processing for SoPickAction action instances.

Reimplemented from SoNode.

  void SoWWWInline::getPrimitiveCount (SoGetPrimitiveCountAction * action) [virtual]
Action method for the SoGetPrimitiveCountAction.

Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action.

Nodes influencing how geometry nodes calculate their primitive count also override this method to change the relevant state variables.

Reimplemented from SoNode.

  void SoWWWInline::audioRender (SoAudioRenderAction * action) [virtual]
Action method for SoAudioRenderAction.

Does common processing for SoAudioRenderAction action instances.

Reimplemented from SoNode.

  void SoWWWInline::addBoundingBoxChild (SbVec3f center, SbVec3f size) [protected], [virtual]
Convenience method that extends the current bounding box to include the box specified by center and size.

  SbBool SoWWWInline::readInstance (SoInput * in, unsigned short flags) [protected], [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.

  void SoWWWInline::copyContents (const SoFieldContainer * from, SbBool copyconnections) [protected], [virtual]
Makes a deep copy of all data of from into this instance, except external scene graph references if copyconnections is FALSE.

This is the method that should be overridden by extension node / engine / dragger / whatever subclasses which need to account for internal data that are not handled automatically.

For copying nodes from application code, you should not invoke this function directly, but rather call the SoNode::copy() function:

SoNode * mynewnode = templatenode->copy();

The same also goes for engines.

Make sure that when you override the copyContents() method in your extension class that you also make it call upwards to its parent superclass in the inheritance hierarchy, as copyContents() in for instance SoNode and SoFieldContainer does important work. It should go something like this:

void
MyCoinExtensionNode::copyContents(const SoFieldContainer * from,
                                  SbBool copyconnections)
{
  // let parent superclasses do their thing (copy fields, copy
  // instance name, etc.)
  SoNode::copyContents(from, copyconnections);
  // [..then copy internal data..]
}

Reimplemented from SoNode.

Member Data Documentation

  SoSFString SoWWWInline::name
Name of file/URL where children should be read from.

  SoSFVec3f SoWWWInline::bboxCenter
Center of bounding box.

  SoSFVec3f SoWWWInline::bboxSize
Size of bounding box.

  SoSFNode SoWWWInline::alternateRep
Alternate representation. Used when children can't be read from name.

Author

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