SoSpotLightManip — spotlight node with 3D interface for editing location, direction, and beam width

SoGLRenderAction,SoCallbackAction,SoGetBoundingBoxAction,SoGetMatrixAction,SoHandleEventAction,SoRayPickAction
          First,  traverses  the  dragger  the way an SoGroup would. All draggers place themselves in space, but
          leave the current transformation unchanged when finished. Then the SoSpotLightManip adds  a  spotlight
          to the state, just like its base class, SoSpotLight.

     SoSearchAction
          Searches just like an SoSpotLight. Does not search the dragger, which is a hidden child.

     SoWriteAction
          Writes  out  just  like  an  SoSpotLight.  Does not write the dragger, which is a hidden child. If you
          really need to write valuable information about the dragger, such  as  customized  geometry,  you  can
          retrieve the dragger with the getDragger() method and then write it out separately.

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 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 help 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).

       If you want to get a pointer to the dragger you can get it 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.

SpotLightManip{onTRUEintensity1color111location001direction00-1dropOffRate0cutOffAngle0.785398}

       SoBase > SoFieldContainer > SoNode > SoLight > SoSpotLight > SoSpotLightManip

SoSpotLightManip()
          Constructor.

     SoDragger*getDragger()
          Returns a pointer to the dragger being used by this manipulator. Given this pointer, you can customize
          the dragger just like you would any other dragger. You can change geometry using the setPart() method,
          or add callbacks using the methods found in the SoDragger reference page.

     SbBoolreplaceNode(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.

     SbBoolreplaceManip(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, nor will it make
          any changes to field connections. The calling process is thus responsible for keeping track of its own
          nodes and field connections.

     staticSoTypegetClassTypeId()
          Returns type identifier for this class.

       SoSpotLightManip — spotlight node with 3D interface for editing location, direction, and beam width

SoDragger,SoSpotLight,SoSpotLightDragger,SoDirectionalLightManip,SoPointLightManipSoSpotLightManip(3IV)()

#include<Inventor/manips/SoSpotLightManip.h>

          Fields from class SoSpotLight:

     SoSFVec3flocationSoSFVec3fdirectionSoSFFloatdropOffRateSoSFFloatcutOffAngle

          Fields from class SoLight:

     SoSFBoolonSoSFFloatintensitySoSFColorcolor

          Methods from class SoSpotLightManip:

                         SoSpotLightManip()SoDragger*getDragger()SbBoolreplaceNode(SoPath*p)SbBoolreplaceManip(SoPath*p,SoSpotLight*newOne)conststaticSoTypegetClassTypeId()

          Methods from class SoNode:

     voidsetOverride(SbBoolstate)SbBoolisOverride()constSoNode*copy(SbBoolcopyConnections=FALSE)constvirtualSbBoolaffectsState()conststaticSoNode*getByName(constSbName&name)staticintgetByName(constSbName&name,SoNodeList&list)

          Methods from class SoFieldContainer:

     voidsetToDefaults()SbBoolhasDefaultValues()constSbBoolfieldsAreEqual(constSoFieldContainer*fc)constvoidcopyFieldValues(constSoFieldContainer*fc,SbBoolcopyConnections=FALSE)SbBoolset(constchar*fieldDataString)voidget(SbString&fieldDataString)virtualintgetFields(SoFieldList&resultList)constvirtualSoField*getField(constSbName&fieldName)constSbBoolgetFieldName(constSoField*field,SbName&fieldName)constSbBoolisNotifyEnabled()constSbBoolenableNotify(SbBoolflag)

          Methods from class SoBase:

     voidref()voidunref()constvoidunrefNoDelete()constvoidtouch()virtualSoTypegetTypeId()constSbBoolisOfType(SoTypetype)constvirtualvoidsetName(constSbName&name)virtualSbNamegetName()const