SoPointLightDragger.3coin3 - Man Page

The SoPointLightDragger class provides interactive geometry for manipulating a point light source.


#include <Inventor/draggers/SoPointLightDragger.h>

Inherits SoDragger.

Public Member Functions

virtual SoType getTypeId (void) const
virtual const SoNodekitCatalog * getNodekitCatalog (void) const
SoPointLightDragger (void)

Static Public Member Functions

static SoType getClassTypeId (void)
static const SoNodekitCatalog * getClassNodekitCatalog (void)
static void initClass (void)

Public Attributes

SoSFVec3f translation

Protected Member Functions

virtual const SoFieldData * getFieldData (void) const
virtual ~SoPointLightDragger (void)
virtual SbBool setUpConnections (SbBool onoff, SbBool doitalways=FALSE)
virtual void setDefaultOnNonWritingFields (void)

Static Protected Member Functions

static const SoFieldData ** getFieldDataPtr (void)
static const SoNodekitCatalog ** getClassNodekitCatalogPtr (void)
static void fieldSensorCB (void *f, SoSensor *s)
static void valueChangedCB (void *f, SoDragger *d)

Protected Attributes

SoSFNode material
SoSFNode translator
SoFieldSensor * fieldSensor

Additional Inherited Members

Detailed Description

The SoPointLightDragger class provides interactive geometry for manipulating a point light source.

Here's how the dragger looks with its default geometry in the inactive state:


This dragger is well suited to use for setting up the fields of a SoPointLight node, as it provides geometry for the end-user to translate a point in 3D space.

The Coin library also includes a manipulator class, SoPointLightManip, which wraps the functionality provided by this class inside the necessary mechanisms for connecting it to SoPointLight node instances in a scenegraph.

See also


Constructor & Destructor Documentation

SoPointLightDragger::SoPointLightDragger (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 SoPointLightDragger
-->      'material'
-->      'translator'

(See SoBaseKit::printDiagram() for information about the output formatting.)

Detailed information on catalog parts:

CLASS SoPointLightDragger
PVT   'this',  SoPointLightDragger  --- 
      'callbackList',  SoNodeKitListPart [ SoCallback, SoEventCallback ] 
PVT   'topSeparator',  SoSeparator  --- 
PVT   'motionMatrix',  SoMatrixTransform  --- 
      'material',  SoMaterial  --- 
      'translator',  SoDragPointDragger  --- 
PVT   'geomSeparator',  SoSeparator  ---

(See SoBaseKit::printTable() for information about the output formatting.)

SoPointLightDragger::~SoPointLightDragger (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 SoPointLightDragger::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 * SoPointLightDragger::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 * SoPointLightDragger::getNodekitCatalog (void) const [virtual]

Returns the nodekit catalog which defines the layout of this class' kit.

Reimplemented from SoDragger.

SbBool SoPointLightDragger::setUpConnections (SbBool onoff, SbBool doitalways = 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 SoPointLightDragger::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 SoPointLightDragger::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 SoPointLightDragger::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.

Member Data Documentation

SoSFVec3f SoPointLightDragger::translation

This field is continuously updated to contain the translation of the pointlight dragger. The application programmer will typically connect this to the SoPointLight::location field of a SoPointLight node (unless using the SoPointLightManip class, where this is taken care of automatically).

It may also of course be connected to any other location / translation field controlling the position of scenegraph geometry, it does not have to part of a SoPointLight node specifically.


Generated automatically by Doxygen for Coin from the source code.

Referenced By

The man page SoPointLightDragger.3coin2(3) is an alias of SoPointLightDragger.3coin3(3).

Wed Jul 20 2022 Version 3.1.3 Coin