'\"! tbl | mmdoc
'\"macro stdmacro
.ie n \{\
.   ds Cr \fB
.   ds Cb \fB
.\}
.el \{\
.   ds Cr \f7
.   ds Cb \f8
.\}
.TH SoCallback(3IV)
.SH NAME
SoCallback \(em provides custom behavior during actions 
.SH INHERITS FROM
SoBase > SoFieldContainer > SoNode > SoCallback
.SH SYNOPSIS
.ps -1
\*(Cr#include <Inventor/nodes/SoCallback.h>
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crtypedef void
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbSoCallbackCB\*(Cr(void *userData, SoAction *action)
.sp
.in 1i
\f1Methods from class SoCallback:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Cr
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbSoCallback\*(Cr()
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbsetCallback\*(Cr(SoCallbackCB *func, void *userData = NULL)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crstatic SoType
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetClassTypeId\*(Cr()
.sp
.in 1i
\f1Methods from class SoNode:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbsetOverride\*(Cr(SbBool state)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbisOverride\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSoNode *
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbcopy\*(Cr(SbBool copyConnections = FALSE) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual SbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbaffectsState\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crstatic SoNode *
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetByName\*(Cr(const SbName &name)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crstatic int
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetByName\*(Cr(const SbName &name, SoNodeList &list)
.sp
.in 1i
\f1Methods from class SoFieldContainer:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbsetToDefaults\*(Cr()
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbhasDefaultValues\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbfieldsAreEqual\*(Cr(const SoFieldContainer *fc) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbcopyFieldValues\*(Cr(const SoFieldContainer *fc, SbBool copyConnections = FALSE)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbset\*(Cr(const char *fieldDataString)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbget\*(Cr(SbString &fieldDataString)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual int
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetFields\*(Cr(SoFieldList &resultList) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual SoField *
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetField\*(Cr(const SbName &fieldName) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetFieldName\*(Cr(const SoField *field, SbName &fieldName) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbisNotifyEnabled\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbenableNotify\*(Cr(SbBool flag)
.sp
.in 1i
\f1Methods from class SoBase:
.in 0.5i
.sp
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbref\*(Cr()
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbunref\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbunrefNoDelete\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(Cbtouch\*(Cr()
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual SoType
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetTypeId\*(Cr() const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(CrSbBool
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbisOfType\*(Cr(SoType type) const
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual void
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbsetName\*(Cr(const SbName &name)
.br
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvirtual SbName
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetName\*(Cr() const
.sp
.SH DESCRIPTION
This node provides a general mechanism for inserting callback functions into a scene graph. The callback function registered with the node is called each time the node is traversed while performing any
\&scene graph action. The callback function is passed a pointer to the action being performed and a user data pointer registered with the callback function. You can use this node to make nonstandard OpenGL
\&calls while rendering. If you do, be careful not to interfere with Inventor's use of OpenGL. 
.sp
If you use a callback node for GL rendering, you should be careful to follow render caching rules. If your callback
\&node can make different rendering calls each time it is traversed, it cannot be cached. In such a case, the node should invalidate any open caches, as in the following example: 
.sp
\*(Cr
.nf
.in 1i

void
myCallbackFunc(void *d, SoAction *action) {
    if (action->isOfType(SoGLRenderAction::getClassTypeId())) {
	// Make my custom GL calls
	((MyClass *) d)->myRender();
	
	// Invalidate the state so that a cache is not made
	SoCacheElement::invalidate(action->getState());
    }
}
.fi
.in 0.5i
\f1 
.SH METHODS
.ta 20m
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Cr
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbSoCallback\*(Cr()
.br
.in 1i
\f1Creates a callback node with default settings. 
.sp
.in 0.5i
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crvoid
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbsetCallback\*(Cr(SoCallbackCB *func, void *userData = NULL)
.br
.in 1i
\f1Sets pointer to callback function and user data. By default, the function pointer in the node is NULL and does nothing. 
.sp
.in 0.5i
.in 1i+20n
.ti 0.5i
.ta 20m
.ds Pt \*(Crstatic SoType
.ie \w'\*(Pt'>=20n \{\
.ne 3
\*(Pt
.ti 0.5i
	\c\
\}
.el\{\
.ne 2
\*(Pt	\c\
\}
\*(CbgetClassTypeId\*(Cr()
.br
.in 1i
\f1Returns type identifier for this class. 
.sp
.in 0.5i
.SH ACTION BEHAVIOR
\*(CbSoGLRenderAction, SoBoundingBoxAction, SoPickAction
.br
.in 1i
\f1Calls the specified callback function for all actions. 
.sp
.in 0.5i
.SH FILE FORMAT/DEFAULTS
.nf
\*(CrCallback {
}
.SH SEE ALSO
\*(CbSoAction, SoCallbackAction, SoEventCallback