Provided by: libcoin80-doc_3.1.4~abc9f50-4ubuntu2_all 
NAME
SoSpotLightDragger -
The SoSpotLightDragger class provides interactive geometry for manipulating a spotlight.
Here's how the dragger looks with its default geometry in the inactive state:
SYNOPSIS
#include <Inventor/draggers/SoSpotLightDragger.h>
Inherits SoDragger.
Public Member Functions
virtual SoType getTypeId (void) const
Returns the type identification of an object derived from a class inheriting SoBase.
This is used for run-time type checking and 'downward' casting.
virtual const SoNodekitCatalog * getNodekitCatalog (void) const
SoSpotLightDragger (void)
Static Public Member Functions
static SoType getClassTypeId (void)
static const SoNodekitCatalog * getClassNodekitCatalog (void)
static void initClass (void)
Public Attributes
SoSFRotation rotation
SoSFVec3f translation
SoSFFloat angle
Protected Member Functions
virtual const SoFieldData * getFieldData (void) const
virtual ~SoSpotLightDragger (void)
virtual SbBool setUpConnections (SbBool onoff, SbBool doitalways=FALSE)
virtual void setDefaultOnNonWritingFields (void)
void dragStart (void)
void drag (void)
void dragFinish (void)
void setBeamScaleFromAngle (float beamangle)
Static Protected Member Functions
static const SoFieldData ** getFieldDataPtr (void)
static const SoNodekitCatalog ** getClassNodekitCatalogPtr (void)
static void startCB (void *f, SoDragger *d)
static void motionCB (void *f, SoDragger *d)
static void doneCB (void *f, SoDragger *d)
static void fieldSensorCB (void *f, SoSensor *s)
static void valueChangedCB (void *f, SoDragger *d)
Protected Attributes
SoSFNode beam
SoSFNode beamActive
SoSFNode beamPlacement
SoSFNode beamScale
SoSFNode beamSep
SoSFNode beamSwitch
SoSFNode material
SoSFNode rotator
SoSFNode translator
SoSFNode translatorRotInv
SoSFNode translatorSep
SoFieldSensor * rotFieldSensor
SoFieldSensor * translFieldSensor
SoFieldSensor * angleFieldSensor
SbPlaneProjector * planeProj
Additional Inherited Members
Detailed Description
The SoSpotLightDragger class provides interactive geometry for manipulating a spotlight.
Here's how the dragger looks with its default geometry in the inactive state:
This dragger is well suited for setting up the fields of a SoSpotLight node, as it
provides geometry for the end-user to interact with a directional vector for the
spotlight, to set up it's position and to control the cut-off angle for the 'lampshade'
around the lightsource.
Note that there is one aspect of SoSpotLight nodes that can not be controlled with this
dragger: the SoSpotLight::dropOffRate field.
The Coin library includes a manipulator class, SoSpotLightManip, which wraps the
functionality provided by this class inside the necessary mechanisms for connecting it to
SoSpotLight node instances in a scenegraph.
See Also:
SoSpotLightManip, SoSpotLight
SoDirectionalLightDragger, SoPointLightDragger
Constructor & Destructor Documentation
SoSpotLightDragger::SoSpotLightDragger (void)
Default constructor, sets up the dragger nodekit catalog with the interaction and feedback
geometry.
Node kit structure (new entries versus parent class marked with arrow prefix):
CLASS SoSpotLightDragger
-->"this"
"callbackList"
"topSeparator"
"motionMatrix"
--> "material"
--> "translatorSep"
--> "translatorRotInv"
--> "translator"
--> "rotator"
--> "beamSep"
--> "beamPlacement"
--> "beamScale"
--> "beamSwitch"
--> "beam"
--> "beamActive"
"geomSeparator"
(See SoBaseKit::printDiagram() for information about the output formatting.)
Detailed information on catalog parts:
CLASS SoSpotLightDragger
PVT "this", SoSpotLightDragger ---
"callbackList", SoNodeKitListPart [ SoCallback, SoEventCallback ]
PVT "topSeparator", SoSeparator ---
PVT "motionMatrix", SoMatrixTransform ---
"material", SoMaterial ---
PVT "translatorSep", SoSeparator ---
PVT "translatorRotInv", SoRotation ---
"translator", SoDragPointDragger ---
"rotator", SoRotateSphericalDragger ---
PVT "beamSep", SoSeparator ---
"beamPlacement", SoTranslation ---
"beamScale", SoScale ---
PVT "beamSwitch", SoSwitch ---
"beam", SoSeparator ---
"beamActive", SoSeparator ---
PVT "geomSeparator", SoSeparator ---
(See SoBaseKit::printTable() for information about the output formatting.)
SoSpotLightDragger::~SoSpotLightDragger (void) [protected], [virtual]
Protected destructor.
(Dragger classes are derived from SoBase, so they are reference counted and automatically
destroyed when their reference count goes to 0.)
Member Function Documentation
SoType SoSpotLightDragger::getTypeId (void) const [virtual]
Returns the type identification of an object derived from a class inheriting SoBase. This
is used for run-time 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
}
}
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 pre-defined 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
toplevel superclasses for the various class groups.
Reimplemented from SoDragger.
const SoFieldData * SoSpotLightDragger::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 SoDragger.
const SoNodekitCatalog * SoSpotLightDragger::getNodekitCatalog (void) const [virtual]
Returns the nodekit catalog which defines the layout of this class' kit.
Reimplemented from SoDragger.
SbBool SoSpotLightDragger::setUpConnections (SbBoolonoff, SbBooldoitalways = FALSE)
[protected], [virtual]
Sets up all internal connections for instances of this class.
(This method will usually not be of interest to the application programmer, unless you
want to extend the library with new custom nodekits or dragger classes. If so, see the
SoBaseKit class documentation.)
Reimplemented from SoInteractionKit.
void SoSpotLightDragger::setDefaultOnNonWritingFields (void) [protected], [virtual]
(Be aware that this method is unlikely to be of interest to the application programmer who
does not want to extend the library with new custom nodekits or draggers. If you indeed
are writing extensions, see the information in the SoBaseKit class documentation.)
This is a virtual method, and the code in it should call SoField::setDefault() with
argument TRUE on part fields that should not be written upon scenegraph export operations.
This is typically done when:
1. field value is NULL and part is NULL by default
2. it is a leaf SoGroup or SoSeparator node with no children
3. it is a leaf listpart with no children and an SoGroup or SoSeparator container
4. it is a non-leaf part and it's of SoGroup type and all fields are at their default
values
Subclasses should usually override this to do additional settings for new member fields.
From the subclass, do remember to call 'upwards' to your superclass'
setDefaultOnNonWritingFields() method.
Reimplemented from SoDragger.
void SoSpotLightDragger::startCB (void *f, SoDragger *d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
void SoSpotLightDragger::motionCB (void *f, SoDragger *d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
void SoSpotLightDragger::doneCB (void *f, SoDragger *d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
void SoSpotLightDragger::fieldSensorCB (void *d, SoSensor *s) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
void SoSpotLightDragger::valueChangedCB (void *f, SoDragger *d) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
void SoSpotLightDragger::dragStart (void) [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer. Called when dragger is selected (picked) by the
user.
void SoSpotLightDragger::drag (void) [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer. Called when user drags the mouse after picking the
dragger.
void SoSpotLightDragger::dragFinish (void) [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer. Called when mouse button is released after picking
and interacting with the dragger.
void SoSpotLightDragger::setBeamScaleFromAngle (floatbeamangle) [protected]
Scales the geometry representing the 'lampshade' around the lightsource to represent the
given beamangle.
Member Data Documentation
SoSFRotation SoSpotLightDragger::rotation
This field is continuously updated to contain the rotation of the current direction
vector. The application programmer will typically connect this to the rotation field of a
SoSpotLight node (unless using the SoSpotLightManip class, where this is taken care of
automatically).
It may also of course be connected to any other rotation field controlling the direction
of scenegraph geometry, it does not have to part of a SoSpotLight node specifically.
SoSFVec3f SoSpotLightDragger::translation
Continuously updated to contain the current translation from the dragger's local origo
position.
SoSFFloat SoSpotLightDragger::angle
The cut-off angle for the 'lampshade' around the lightsource.
Typically connected to a SoSpotLight::cutOffAngle field.
SoFieldSensor * SoSpotLightDragger::rotFieldSensor [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
SoFieldSensor * SoSpotLightDragger::translFieldSensor [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
SoFieldSensor * SoSpotLightDragger::angleFieldSensor [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
SbPlaneProjector * SoSpotLightDragger::planeProj [protected]
This API member is considered internal to the library, as it is not likely to be of
interest to the application programmer.
Author
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