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Base class for all node kits. More...
#include <Inventor/nodekits/SoBaseKit.h>
Public Member Functions | |
virtual const SoNodekitCatalog * | getNodekitCatalog () const |
Returns the SoNodekitCatalog for this instance of SoBaseKit. | |
SoBaseKit () | |
Constructor. | |
virtual SoNode * | getPart (const SbName &partName, SbBool makeIfNeeded) |
Searches the nodekit catalog (and those of all nested nodekits) for the part named partName . | |
SbString | getPartString (const SoBase *part) |
Given a node or a path to a node, checks if the part exists in the nodekit, in a nested nodekit, or an element of a list part. | |
virtual SoNodeKitPath * | createPathToPart (const SbName &partName, SbBool makeIfNeeded, const SoPath *pathToExtend=NULL) |
Returns a path that begins at this nodekit and ends at partName . | |
virtual SbBool | setPart (const SbName &partName, SoNode *from) |
Inserts the given node (not a copy) as the new part specified by partName . | |
SbBool | set (char *nameValuePairListString) |
SETTING FIELDS OF PARTS. | |
SbBool | set (char *partNameString, char *parameterString) |
virtual void | doAction (SoAction *action) |
This method performs the "typical" operation of a node for any action. | |
virtual void | callback (SoCallbackAction *action) |
These functions implement all actions for nodekits. | |
virtual void | GLRender (SoGLRenderAction *action) |
These virtual functions implement all of the actions for nodes, Most of the default implementations do nothing. | |
virtual void | getBoundingBox (SoGetBoundingBoxAction *action) |
virtual void | getMatrix (SoGetMatrixAction *action) |
virtual void | handleEvent (SoHandleEventAction *action) |
virtual void | rayPick (SoRayPickAction *action) |
virtual void | search (SoSearchAction *action) |
virtual void | write (SoWriteAction *action) |
virtual SoChildList * | getChildren () const |
Returns pointer to children. | |
void | printDiagram () |
void | printSubDiagram (const SbName &rootName, int level) |
void | printTable () |
virtual void | addWriteReference (SoOutput *out, SbBool isFromField=FALSE) |
Overrides the default method to use countMyFields() instead of the regular SoFieldData writing mechanism. | |
SbBool | forceChildDrivenWriteRefs (SoOutput *out) |
This returns TRUE if the nodekit intends to write out. | |
Static Public Member Functions | |
static const SoNodekitCatalog * | getClassNodekitCatalog () |
Returns the SoNodekitCatalog for the class SoBaseKit. | |
static SbBool | isSearchingChildren () |
Sets and queries if nodekit children are searched during SoSearchAction traversal. | |
static void | setSearchingChildren (SbBool newVal) |
Sets and queries if nodekit children are searched during SoSearchAction traversal. | |
static void | initClass () |
Initializes base node class. | |
static SoNode * | typeCheck (const SbName &partName, const SoType &partType, SoNode *node) |
Protected Member Functions | |
SO_KIT_CATALOG_ENTRY_HEADER (callbackList) | |
Define fields for the new parts of the kit... | |
virtual SoNode * | addToCopyDict () const |
Redefines this to add this node and all part nodes to the dictionary. | |
virtual void | copyContents (const SoFieldContainer *fromFC, SbBool copyConnections) |
Copies the contents of the given nodekit into this instance. | |
SoGroup * | getContainerNode (const SbName &listName, SbBool makeIfNeeded=TRUE) |
Returns the containerNode within the SoNodeKitListPart given by listName. | |
virtual SoNode * | getAnyPart (const SbName &partName, SbBool makeIfNeeded, SbBool leafCheck=FALSE, SbBool publicCheck=FALSE) |
like their public versions, but are allowed access to non-leaf and private parts. | |
virtual SoNodeKitPath * | createPathToAnyPart (const SbName &partName, SbBool makeIfNeeded, SbBool leafCheck=FALSE, SbBool publicCheck=FALSE, const SoPath *pathToExtend=NULL) |
virtual SbBool | setAnyPart (const SbName &partName, SoNode *from, SbBool anyPart=TRUE) |
void | createNodekitPartsList () |
called during construction to create parts list | |
virtual void | createDefaultParts () |
called during construction to create any parts that are created by default (such as the cube in the SoCubeKit) | |
const SoNodekitParts * | getNodekitPartsList () const |
Return the node's partsList. | |
void | catalogError () |
Prints an Error when there's trouble building a catalog. | |
virtual SbBool | setUpConnections (SbBool onOff, SbBool doItAlways=FALSE) |
detach/attach any sensors, callbacks, and/or field connections. | |
virtual SbBool | readInstance (SoInput *in, unsigned short flags) |
Reads in from file. Takes care of setting parts and stuff. | |
virtual void | setDefaultOnNonWritingFields () |
This is called during countMyFields() method. | |
void | countMyFields (SoOutput *out) |
This is called during addWriteReference() to write the fields. | |
virtual | ~SoBaseKit () |
Static Protected Member Functions | |
static const SoNodekitCatalog ** | getClassNodekitCatalogPtr () |
...end of contents of SO_KIT_HEADER | |
Protected Attributes | |
SoChildList * | children |
SoNodekitParts * | nodekitPartsList |
parts list. | |
SbBool | connectionsSetUp |
Friends | |
class | SoNodekitCatalogEntry |
class | SoNodekitParts |
class | SoV1BaseKit |
This is the base class from which all nodekit nodes are derived. Nodekits provide a convenient mechanism for creating groups of scene graph nodes with some larger meaning. When you create a shape node such as an indexed face set, for example, you almost always precede it with a coordinate node. You may also want to add a transform node or specify properties with material, drawing style, material binding, etc. Instead of creating each of these nodes individually and then arranging them into a subgraph, you can use a nodekit of the appropriate type (in this case, SoShapeKit).
Each class of nodekit has a nodekit catalog (SoNodekitCatalog) that describes the nodes in the subgraph, referred to as parts. The catalog has an entry for each part, with information such as the partName, partType, and nullByDefault (if FALSE the constructor creates it). The catalog also describes the arrangement of parts in the subgraph. (Other information is described below; a complete description is in the SoNodekitCatalog reference page.)
If we regard the scene graph arrangement as a branching tree, then the top node (root) of the arrangement is always the nodekit itself. The leaf nodes are those at the bottom (containing no children). Some leaves of the tree are defined in the catalog to be public parts, while other leaves are private. All non-leaf parts are considered internal to the nodekit structure and are marked private. Public parts are accessible; they may be requested, changed, or set by the programmer with member functions such as getPart(). Private parts are not accessible, so methods such as getPart() will have no effect on them. For example, if you call getPart() to retrieve a private part, NULL
will be returned even when the part exists.
Every nodekit reference page has a Parts section describing the function of each public part it adds to those inherited from its parent class. Also, a Catalog Parts section has tables of often-needed information from the catalog (part type, etc.). These tables include all public parts, both new and inherited. Only the public parts of a nodekit are described in the reference pages. Nodekits take care of the rest for you; they automatically arrange the subgraph, creating and deleting the private parts when necessary. (The SoNodekitCatalog reference page has methods for finding out the part names and arrangement of all parts, both public and private.)
The nodekit catalog is a template shared by all instances of a class. They use the shared catalog as a guide when creating parts (i.e., constructing actual nodes), but each instance stores its own parts separately. Moreover, nodekits are not SoGroup nodes, and parts are added as hidden children; you can only access parts with the methods of SoBaseKit and its derived classes.
Any public part may be retrieved with getPart(), installed with setPart(), or removed by giving a NULL
argument to setPart(). Paths from the nodekit down to a part can be created by createPathToPart().
By default, parts are not created until the user requests or sets them. This keeps the subgraph uncluttered and efficient for traversal. Additionally, removing a part (setting it to NULL) has the extra effect of removing any internal parts that are no longer needed.
Since nodekits hide their children, any SoPath containing nodekits will end at the topmost nodekit. However, since nodekits may be nested within other nodekits, you may wish to cast an (SoPath *) into an (SoNodeKitPath *). The methods of SoNodeKitPath allow you to view all nodekits that lie on the path (see the reference page for SoNodeKitPath).
Public parts in the nodekit catalog fall into three categories:
[1] regular nodes
[2] nodekits, or nested nodekits (which may nest recursively). Any node which is public in a nested nodekit is accessible to the higher level nodekit(s) that contains it. The description of getPart() below shows how to refer to nested parts by name (e.g., "appearance.material"
). This works for any nodekit method that takes a part name for an argument.
[3] lists, or list parts. These parts group together children (list elements) of a particular type or types. As with nested nodekits, you can refer to individual elements using notation described in getPart() (e.g., "childList[0]"
, or if the list elements are in turn nodekits, "childList[2].transform"
).
When the catalog denotes that a part is a list, the part itself is always a node of type SoNodeKitListPart. The catalog specifies a set of permissible listItemTypes
and a listContainerType
for that part. It gives this information to the SoNodeKitListPart when it creates it. From then on, the list part will enforce type checking. So even if you retrieve the SoNodeKitListPart with getPart(), you will not be able to add illegal children. (See the SoNodeKitListPart reference page for more information). As an example, the callbackList part of SoBaseKit has an SoSeparator container and allows only SoCallback and SoEventCallback nodes in the list. Children may be added, retrieved, and removed from an SoNodeKitListPart node using methods that parallel those of SoGroup. However, type-checking is strictly enforced.
Note that, although all public parts are leaves in the nodekit catalog, you are free to add children to them (assuming that they are groups, nodekits, or list parts). A part's status as a leaf in the catalog just means that the nodekit will not manage the part's children. For example, SoWrapperKit has a part called contents with a part type of SoSeparator. You can put whatever you want underneath the separator, as long as contents itself is an SoSeparator.
Thus, a nodekit only controls a section of the scene graph. Above and below that section, anything goes.
However, when nodekits are nested, they effectively create a larger `known' section of the scene graph. For example, the appearance part of the SoSeparatorKit is a leaf node in the SoSeparatorKit catalog. But appearance is in turn an SoAppearanceKit, containing parts such as material and drawStyle. The two nodekits combine to make an even larger template, which the SoSeparatorKit can examine by looking at the catalogs for both classes. So an SoSeparatorKit can successfully return a part named "material"
; first it finds (or creates) the appearance part, then it gets the material by calling getPart() on the appearance.
When the catalog defines the listItemTypes
of a list part to be nodekits, the name-able space expands further. For example, SoSeparatorKit has a part childList which permits only SoSeparatorKits, so each list element can be further searched. Hence the name "childList[0].childList[1].childList[2].material" is perfectly legal.
"detailNodeKit"
(retrievable with SoNodeKitDetail::getNodeKit()) to be a pointer to itself. Sets the "detailPart"
(retrievable with SoNodeKitDetail::getPart()) to be a pointer to the kit's leaf-most part that lies on the pickPath. Sets the "detailPartName"
(retrievable with SoNodeKitDetail::getPartName()) to be the partName of that part, as found in the catalog. Does not descend into nested nodekits. Each nodekit along the path is the "detailPart"
in its parent's detail. However, if the pick path goes through a list part, a pointer to the child is used for the "detailPart"
, and "detailPartName"
is of the form "listName[i]"
. Definition at line 262 of file SoBaseKit.h.
SoBaseKit::SoBaseKit | ( | ) |
virtual SoBaseKit::~SoBaseKit | ( | ) | [protected, virtual] |
Reimplemented from SoFieldContainer.
virtual void SoBaseKit::callback | ( | SoCallbackAction * | action | ) | [virtual] |
Reimplemented from SoNode.
void SoBaseKit::catalogError | ( | ) | [protected] |
virtual void SoBaseKit::copyContents | ( | const SoFieldContainer * | fromFC, |
SbBool | copyConnections | ||
) | [protected, virtual] |
Reimplemented from SoNode.
Reimplemented in SoRotateCylindricalDragger, SoRotateSphericalDragger, and SoInteractionKit.
void SoBaseKit::countMyFields | ( | SoOutput * | out | ) | [protected] |
It sometimes treats fields for parts of the nodekit in a special way. Under normal circumstances, they write like other fields. The special case is when a part-field has a non-NULL value, but has also been set to default, indicating that we would rather not write it. If the part is a regular node, we give it a field-connection style write ref. So it only writes if some other instance of the node forces a write. If the part is a nodekit, then we additionally write ref the fields of the nodekit, using this same method. Later, in the WRITE stage, the kit-part will be written if at least one of its fields or ancestor parts has shouldWrite() ==TRUE. This way, if a nodekit part or any of its ancestors has non-NULL fields, it will later be forced to write, even though it has been set to default. Example: Parent draggers attempt not to write out child draggers. But the parentDragger must at least traverse the childDragger to see if any of the part geometry has been changed from its default. Such changes must be written to file.
virtual void SoBaseKit::createDefaultParts | ( | ) | [protected, virtual] |
void SoBaseKit::createNodekitPartsList | ( | ) | [protected] |
virtual SoNodeKitPath* SoBaseKit::createPathToAnyPart | ( | const SbName & | partName, |
SbBool | makeIfNeeded, | ||
SbBool | leafCheck = FALSE , |
||
SbBool | publicCheck = FALSE , |
||
const SoPath * | pathToExtend = NULL |
||
) | [protected, virtual] |
Reimplemented in SoInteractionKit.
virtual SoNodeKitPath* SoBaseKit::createPathToPart | ( | const SbName & | partName, |
SbBool | makeIfNeeded, | ||
const SoPath * | pathToExtend = NULL |
||
) | [virtual] |
Searching for the part is the same as in getPart(). NULL
is returned if partName
cannot be found, or if makeIfNeeded
is FALSE
and the part is not yet built. If the the part is retrieved and the argument pathToExtend
is NULL
, the path returned begins at this
and ends at partName
. If pathToExtend
is not NULL
, the path created is a copy of pathToExtend
with entries appended all the way down to partName
. It is okay for pathToExtend
to go beyond the nodekit; extra nodes will be popped off the tail before continuing from this
down to partName
.
virtual void SoBaseKit::doAction | ( | SoAction * | action | ) | [virtual] |
The default implementation does nothing.
Reimplemented from SoNode.
[a] call shouldWrite(). If TRUE, trivial return. [b] If the kit thinks it shouldn't write, it first does a recursive call to its children. If any children must write, then so must the kit. [c] If kit has changed its mind because of [b], then add a writeRef.
[d] If kit should not write, it will delete the fieldDataForWriting, since there will no writing pass applied to take care of this.
virtual SoNode* SoBaseKit::getAnyPart | ( | const SbName & | partName, |
SbBool | makeIfNeeded, | ||
SbBool | leafCheck = FALSE , |
||
SbBool | publicCheck = FALSE |
||
) | [protected, virtual] |
These are virtual so subclasses may do extra things when certain parts are requested.
Reimplemented in SoInteractionKit.
virtual void SoBaseKit::getBoundingBox | ( | SoGetBoundingBoxAction * | action | ) | [virtual] |
Reimplemented from SoNode.
Reimplemented in SoCenterballDragger, and SoDragger.
virtual SoChildList* SoBaseKit::getChildren | ( | ) | const [virtual] |
Reimplemented from SoNode.
static const SoNodekitCatalog* SoBaseKit::getClassNodekitCatalog | ( | ) | [inline, static] |
Definition at line 276 of file SoBaseKit.h.
static const SoNodekitCatalog** SoBaseKit::getClassNodekitCatalogPtr | ( | ) | [inline, static, protected] |
Definition at line 289 of file SoBaseKit.h.
SoGroup* SoBaseKit::getContainerNode | ( | const SbName & | listName, |
SbBool | makeIfNeeded = TRUE |
||
) | [protected] |
virtual void SoBaseKit::getMatrix | ( | SoGetMatrixAction * | action | ) | [virtual] |
Reimplemented from SoNode.
Reimplemented in SoCenterballDragger.
virtual const SoNodekitCatalog* SoBaseKit::getNodekitCatalog | ( | ) | const [virtual] |
While each instance of a given class creates its own distinct set of parts (which are actual nodes), all instances share the same catalog (which describes the parts but contains no actual node pointers).
const SoNodekitParts* SoBaseKit::getNodekitPartsList | ( | ) | const [inline, protected] |
Definition at line 497 of file SoBaseKit.h.
Returns a pointer to the part if a match is found, the part is public, and the part has already been built. If no match is found, or if the part is private, NULL
is returned. If partName
is in the catalog (or that of one of its nested nodekit parts), but the part has not been built yet, the argument makeIfNeeded
determines the course of action. When makeIfNeeded
is FALSE
, NULL
is returned; when makeIfNeeded
is TRUE
, getPart() will create the part (as well as any necessary intermediary parts), put it in the correct place, and return a pointer to the newly created part.
Elements of list parts and parts within nested nodekits can all be retrieved with getPart() The full syntax for legal partName
arguments is given below.
Part name BNF notation:
partName = singleName | compoundName
compoundName = singleName | compoundName.singleName
singleName = singlePartName | singleListElementName
singlePartName =
the name of any single part in the catalog (including those that are lists or nodekits), or in the recursively nested catalogs of any of its parts.
singleListElementName = singleListName[index]
singleListName =
the name of any single list-type part in the catalog, or in the recursively nested catalogs of any of its parts.
index = integer
Examples of valid part names are:
"transform", "appearance.material", "childList[2].drawStyle", "foot", "bird.leftLeg.foot", "octopus.leg[4].suctionCup[2].material"
If so, returns a string describing the part name; otherwise, returns an empty string ("").
virtual void SoBaseKit::GLRender | ( | SoGLRenderAction * | action | ) | [virtual] |
Reimplemented from SoNode.
Reimplemented in SoTabPlaneDragger.
virtual void SoBaseKit::handleEvent | ( | SoHandleEventAction * | action | ) | [virtual] |
static void SoBaseKit::initClass | ( | ) | [static] |
Reimplemented from SoNode.
Reimplemented in SoCenterballDragger, SoDirectionalLightDragger, SoDragger, SoDragPointDragger, SoHandleBoxDragger, SoJackDragger, SoPointLightDragger, SoRotateCylindricalDragger, SoRotateDiscDragger, SoRotateSphericalDragger, SoScale1Dragger, SoScale2Dragger, SoScale2UniformDragger, SoScaleUniformDragger, SoSpotLightDragger, SoTabBoxDragger, SoTabPlaneDragger, SoTrackballDragger, SoTransformBoxDragger, SoTransformerDragger, SoTranslate1Dragger, SoTranslate2Dragger, SoInteractionKit, SoAppearanceKit, SoCameraKit, SoLightKit, SoSceneKit, SoSeparatorKit, SoShapeKit, and SoWrapperKit.
static SbBool SoBaseKit::isSearchingChildren | ( | ) | [inline, static] |
By default, they are not.
Definition at line 408 of file SoBaseKit.h.
void SoBaseKit::printDiagram | ( | ) |
void SoBaseKit::printSubDiagram | ( | const SbName & | rootName, |
int | level | ||
) |
void SoBaseKit::printTable | ( | ) |
virtual void SoBaseKit::rayPick | ( | SoRayPickAction * | action | ) | [virtual] |
Reimplemented from SoNode.
Reimplemented from SoFieldContainer.
Reimplemented in SoInteractionKit.
virtual void SoBaseKit::search | ( | SoSearchAction * | action | ) | [virtual] |
Reimplemented from SoNode.
SbBool SoBaseKit::set | ( | char * | nameValuePairListString | ) |
set routine returns FALSE if it cannot find the parameter to set
SbBool SoBaseKit::set | ( | char * | partNameString, |
char * | parameterString | ||
) |
virtual SbBool SoBaseKit::setAnyPart | ( | const SbName & | partName, |
SoNode * | from, | ||
SbBool | anyPart = TRUE |
||
) | [protected, virtual] |
Reimplemented in SoInteractionKit.
virtual void SoBaseKit::setDefaultOnNonWritingFields | ( | ) | [protected, virtual] |
It calls setDefault() on those fields we do not wish to write out. setDefault does not change the field value, but it sets a flag indicating that the field should not get written by this node. Fields that we do not write are [a] parts that are NULL and are defined in the catalog to be NULL by default. [b] non-leaf parts for which isNodeFieldValuesImportant() is FALSE. [c] leaf parts that are empty groups, empty separators, [d] leaf parts that are empty lists (but they must have group or separator container nodes.
Reimplemented in SoCenterballDragger, SoDirectionalLightDragger, SoDragger, SoDragPointDragger, SoHandleBoxDragger, SoJackDragger, SoPointLightDragger, SoSpotLightDragger, SoTabBoxDragger, SoTabPlaneDragger, SoTrackballDragger, SoTransformBoxDragger, SoTransformerDragger, SoInteractionKit, SoSeparatorKit, and SoShapeKit.
See getPart() for the syntax of partName
. This method adds any extra nodes needed to fit the part into the nodekit's catalog. For example, if you call:
mySepKit->setPart("childList[0]", myNewChild);
the kit may need to create the part childList before it can install myNewChild
. Run-time type checking verifies that the node type of newPart
matches the type called for by partName
. For example, if partName
was a material for an SoSeparatorKit, but newPart
was an SoTransform node, then the node would not be installed, and FALSE
would be returned.
If newPart
is NULL
, then the node specified by partName
is removed. If this renders any private parts useless (as occurs when you remove the last child of an SoGroup node), they will also be removed. Hence nodekits do not retain unnecessary nodes.
TRUE
is returned on success, and FALSE
upon error.
static void SoBaseKit::setSearchingChildren | ( | SbBool | newVal | ) | [static] |
By default, they are not.
virtual SbBool SoBaseKit::setUpConnections | ( | SbBool | onOff, |
SbBool | doItAlways = FALSE |
||
) | [protected, virtual] |
Called by: start/end of SoBaseKit::readInstance and on new copy by: start/end of SoBaseKit::copyContents. Classes that redefine must call setUpConnections(TRUE,TRUE) at end of constructor to add their own connections to the ones already connected by the base classes. The doItAlways flag can force the method to do the work. But if (doItAlways == FALSE && onOff == connectionsSetUp), then the method will return immediately without doing anything. Returns the state of the node when this was called.
Reimplemented in SoCenterballDragger, SoDirectionalLightDragger, SoDragPointDragger, SoHandleBoxDragger, SoJackDragger, SoPointLightDragger, SoRotateCylindricalDragger, SoRotateDiscDragger, SoRotateSphericalDragger, SoScale1Dragger, SoScale2Dragger, SoScale2UniformDragger, SoScaleUniformDragger, SoSpotLightDragger, SoTabBoxDragger, SoTabPlaneDragger, SoTrackballDragger, SoTransformBoxDragger, SoTransformerDragger, SoTranslate1Dragger, SoTranslate2Dragger, SoInteractionKit, and SoSeparatorKit.
SoBaseKit::SO_KIT_CATALOG_ENTRY_HEADER | ( | callbackList | ) | [protected] |
static SoNode* SoBaseKit::typeCheck | ( | const SbName & | partName, |
const SoType & | partType, | ||
SoNode * | node | ||
) | [static] |
virtual void SoBaseKit::write | ( | SoWriteAction * | action | ) | [virtual] |
Reimplemented from SoNode.
friend class SoNodekitCatalogEntry [friend] |
Definition at line 443 of file SoBaseKit.h.
friend class SoNodekitParts [friend] |
Definition at line 444 of file SoBaseKit.h.
friend class SoV1BaseKit [friend] |
Definition at line 445 of file SoBaseKit.h.
SoChildList* SoBaseKit::children [protected] |
Definition at line 460 of file SoBaseKit.h.
SbBool SoBaseKit::connectionsSetUp [protected] |
Definition at line 514 of file SoBaseKit.h.
SoNodekitParts* SoBaseKit::nodekitPartsList [protected] |
Definition at line 488 of file SoBaseKit.h.