Open Inventor Release 2024.1.1
 
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SoSpotLightManip Class Reference

Spotlight node with 3D interface for editing location, direction, and beam width. More...

#include <Inventor/manips/SoSpotLightManip.h>

+ Inheritance diagram for SoSpotLightManip:

Public Member Functions

virtual SoType getTypeId () const
 Returns the type identifier for this specific instance.
 
 SoSpotLightManip ()
 Constructor.
 
SoDraggergetDragger ()
 Returns the dragger being used by this manipulator.
 
SbBool replaceNode (SoPath *p)
 Replaces the tail of the path with this manipulator.
 
SbBool replaceManip (SoPath *p, SoSpotLight *newOne) const
 Replaces the tail of the path, which must be this manipulator, with the given SoSpotLight node.
 
- Public Member Functions inherited from SoSpotLight
 SoSpotLight ()
 Creates a spotlight source node with default settings.
 
- Public Member Functions inherited from SoNode
virtual void setOverride (const SbBool state)
 Turns the override flag on or off.
 
virtual SbBool isOverride () const
 Returns the state of the override flag.
 
virtual SoNodecopy (SbBool copyConnections=FALSE) const
 Creates and returns an exact copy of the node.
 
virtual SbBool affectsState () const
 Returns TRUE if a node has an effect on the state during traversal.
 
virtual void touch ()
 Marks an instance as modified, simulating a change to it.
 
- Public Member Functions inherited from SoFieldContainer
void setToDefaults ()
 Sets all fields in this object to their default values.
 
SbBool hasDefaultValues () const
 Returns TRUE if all of the object's fields have their default values.
 
SbBool fieldsAreEqual (const SoFieldContainer *fc) const
 Returns TRUE if this object's fields are exactly equal to fc's fields.
 
void copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE)
 Copies the contents of fc's fields into this object's fields.
 
SoNONUNICODE SbBool set (const char *fieldDataString)
 Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format.
 
SbBool set (const SbString &fieldDataString)
 Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format.
 
void get (SbString &fieldDataString)
 Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string.
 
virtual int getFields (SoFieldList &list) const
 Appends references to all of this object's fields to resultList, and returns the number of fields appended.
 
virtual int getAllFields (SoFieldList &list) const
 Returns a list of fields, including the eventIn's and eventOut's.
 
virtual SoFieldgetField (const SbName &fieldName) const
 Returns a the field of this object whose name is fieldName.
 
virtual SoFieldgetEventIn (const SbName &fieldName) const
 Returns a the eventIn with the given name.
 
virtual SoFieldgetEventOut (const SbName &fieldName) const
 Returns the eventOut with the given name.
 
SbBool getFieldName (const SoField *field, SbName &fieldName) const
 Returns the name of the given field in the fieldName argument.
 
SbBool enableNotify (SbBool flag)
 Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE).
 
SbBool isNotifyEnabled () const
 Notification is the process of telling interested objects that this object has changed.
 
virtual void setUserData (void *data)
 Sets application data.
 
void * getUserData (void) const
 Gets user application data.
 
- Public Member Functions inherited from SoBase
virtual SbName getName () const
 Returns the name of an instance.
 
virtual void setName (const SbName &name)
 Sets the name of an instance.
 
void setSynchronizable (const bool b)
 Sets this to be a ScaleViz synchronizable object.
 
bool isSynchronizable () const
 Gets the ScaleViz synchronizable state of this object.
 
- Public Member Functions inherited from SoRefCounter
void ref () const
 Adds a reference to an instance.
 
void unref () const
 Removes a reference from an instance.
 
void unrefNoDelete () const
 unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero.
 
int getRefCount () const
 Returns current reference count.
 
void lock () const
 lock this instance.
 
void unlock () const
 unlock this instance.
 
- Public Member Functions inherited from SoTypedObject
SbBool isOfType (const SoType &type) const
 Returns TRUE if this object is of the type specified in type or is derived from that type.
 
template<typename TypedObjectClass >
SbBool isOfType () const
 Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class.
 

Static Public Member Functions

static SoType getClassTypeId ()
 Returns the type identifier for this class.
 
- Static Public Member Functions inherited from SoSpotLight
static SoType getClassTypeId ()
 Returns the type identifier for this class.
 
- Static Public Member Functions inherited from SoLight
static SoType getClassTypeId ()
 Returns the type identifier for this class.
 
- Static Public Member Functions inherited from SoNode
static SoType getClassTypeId ()
 Returns the type identifier for this class.
 
static SoNodegetByName (const SbName &name)
 A node's name can be set using SoBase::setName().
 
static int getByName (const SbName &name, SoNodeList &list)
 A node's name can be set using SoBase::setName().
 
- Static Public Member Functions inherited from SoFieldContainer
static SoType getClassTypeId ()
 Returns the type of this class.
 
- Static Public Member Functions inherited from SoBase
static SoType getClassTypeId ()
 Returns type identifier for this class.
 
- Static Public Member Functions inherited from SoTypedObject
static SoType getClassTypeId ()
 Returns the type identifier for this class.
 

Additional Inherited Members

- Public Attributes inherited from SoSpotLight
SoSFVec3f location
 Location of the source.
 
SoSFVec3f direction
 Principal direction of illumination (center axis of cone).
 
SoSFFloat dropOffRate
 Rate of intensity drop-off per change in angle from primary direction: 0 = constant intensity, 1 = very sharp drop-off.
 
SoSFFloat cutOffAngle
 Angle (in radians) outside of which intensity is zero, measured from the center axis of the cone to an edge.
 
- Public Attributes inherited from SoLight
SoSFBool on
 Determines whether the source is active or inactive.
 
SoSFFloat intensity
 Illumination intensity of light source.
 
SoSFColor color
 Light source illumination color.
 

Detailed Description

Spotlight node with 3D interface for editing location, direction, and beam width.

SoSpotLightManip is the base class for all SoSpotLight nodes that have a built-in 3D user interface (this is the only such class provided with the Open Inventor toolkit). Since it is derived from SoSpotLight, any changes to its fields result in a change of lighting for nodes that follow it in the scene graph. In this case, the interface edits the location , direction , and cutOffAngle fields. Also, the color of the manipulator's geometry will reflect the color of the light (but you can not edit the color using this manipulator).

Typically, you will want to replace a regular SoSpotLight with an SoSpotLightManip (as when the user selects a light to be edited), or vice versa (as when the user is done moving the light and the interface should go away). Use the replaceNode() method to insert a manipulator into a scene graph, and the replaceManip() method to remove it when done.

The SoSpotLightManip utilizes an SoSpotLightDragger to provide a 3D interface. However, the manipulator differs from the dragger; it lights other objects in the scene because, as an SoSpotLight, it alters the state. The fields values and movement of the dragger, on the other hand, affect only the dragger itself. To find out more about how the interface works and what each part will do, see the reference page for SoSpotLightDragger. The interfaces of the dragger and the manipulator are identical.

The SoSpotLightManip utilizes its dragger by adding it as a hidden child. When an action is applied to the manipulator, such as rendering or handling events, the manipulator first traverses the dragger, and then the manipulator adds its lighting parameters to the state. When you click-drag-release over the manipulator, it passes these events down to the dragger, which moves as a result ("I can't <B> help </B> it, I'm a dragger!").

The manipulator maintains consistency between the fields of the dragger and its own fields. Let's say you use the mouse to widen the cone of the dragger . Callbacks insure that the cutOffAngle field of the manipulator will change by the same amount, thus changing the lighting of nodes which follow in the scene graph. Similarly, if you set the cutOffAngle field of the SoSpotLightManip, the manipulator will widen the beam of the dragger accordingly.

Because the dragger is a hidden child, you can see the dragger on screen and interact with it, but the dragger does not show up when you write the manipulator to file. Also, any SoPath will end at the manipulator. (See the Actions section of this reference page for a complete description of when the dragger is traversed).

You can get this dragger from the manipulator using the getDragger() method. You will need to do this if you want to change the geometry of a manipulator, since the geometry actually belongs to the dragger.

FILE FORMAT/DEFAULT

    SpotLightManip {
    on TRUE
    intensity 1
    color 1 1 1
    location 0 0 1
    direction 0 0 -1
    dropOffRate 0
    cutOffAngle 0.785398
    }

ACTION BEHAVIOR

SEE ALSO

SoDragger, SoSpotLight, SoSpotLightDragger, SoDirectionalLightManip, SoPointLightManip

Definition at line 161 of file SoSpotLightManip.h.

Constructor & Destructor Documentation

◆ SoSpotLightManip()

SoSpotLightManip::SoSpotLightManip ( )

Constructor.

Member Function Documentation

◆ getClassTypeId()

static SoType SoSpotLightManip::getClassTypeId ( )
static

Returns the type identifier for this class.


◆ getDragger()

SoDragger * SoSpotLightManip::getDragger ( )

Returns the dragger being used by this manipulator.

You can customize this dragger just like you would with any other dragger. You can change geometry using the setPart() method, or add callbacks using the methods found in the SoDragger reference page.

◆ getTypeId()

virtual SoType SoSpotLightManip::getTypeId ( ) const
virtual

Returns the type identifier for this specific instance.

Reimplemented from SoSpotLight.

◆ replaceManip()

SbBool SoSpotLightManip::replaceManip ( SoPath p,
SoSpotLight newOne 
) const

Replaces the tail of the path, which must be this manipulator, with the given SoSpotLight node.

If the path has a nodekit, this will try to use setPart() to insert the new node. Otherwise, the manipulator requires that the next to last node in the path chain be a group.

The field values from the manipulator will be copied to the spotlight node, and the manipulator will be replaced.

The manipulator will not call ref() or unref() on the node which is replacing it. The manipulator will not make any changes to field connections. The calling process is thus responsible for keeping track of its own nodes and field connections.

◆ replaceNode()

SbBool SoSpotLightManip::replaceNode ( SoPath p)

Replaces the tail of the path with this manipulator.

The tail of the path must be an SoSpotLight node (or subclass thereof). If the path has a nodekit, this will try to use setPart() to insert the manipulator. Otherwise, the manipulator requires that the next to last node in the path chain be a group.

The field values from the spotlight node will be copied to this manipulator, and the light node will be replaced.

The manipulator will not call ref() on the node it is replacing. The old node will disappear if it has no references other than from the input path p and its parent, since this manipulator will be replacing it in both of those places. Nor will the manipulator make any changes to field connections of the old node. The calling process is thus responsible for keeping track of its own nodes and field connections.


The documentation for this class was generated from the following file: