NAME

       SoCoordinate4 — rational coordinate point node

INHERITS FROM

       SoBase > SoFieldContainer > SoNode > SoCoordinate4

SYNOPSIS

       #include <Inventor/nodes/SoCoordinate4.h>

          Fields from class SoCoordinate4:

     SoMFVec4f           point

          Methods from class SoCoordinate4:

                         SoCoordinate4()
     static SoType       getClassTypeId()

          Methods from class SoNode:

     void                setOverride(SbBool state)
     SbBool              isOverride() const
     SoNode *            copy(SbBool copyConnections = FALSE) const
     virtual SbBool      affectsState() const
     static SoNode *     getByName(const SbName &name)
     static int          getByName(const SbName &name, SoNodeList &list)

          Methods from class SoFieldContainer:

     void                setToDefaults()
     SbBool              hasDefaultValues() const
     SbBool              fieldsAreEqual(const SoFieldContainer *fc) const
     void                copyFieldValues(const SoFieldContainer *fc, SbBool copyConnections = FALSE)
     SbBool              set(const char *fieldDataString)
     void                get(SbString &fieldDataString)
     virtual int         getFields(SoFieldList &resultList) const
     virtual SoField *   getField(const SbName &fieldName) const
     SbBool              getFieldName(const SoField *field, SbName &fieldName) const
     SbBool              isNotifyEnabled() const
     SbBool              enableNotify(SbBool flag)

          Methods from class SoBase:

     void                ref()
     void                unref() const
     void                unrefNoDelete() const
     void                touch()
     virtual SoType      getTypeId() const
     SbBool              isOfType(SoType type) const
     virtual void        setName(const SbName &name)
     virtual SbName      getName() const

DESCRIPTION

       This  node  defines  a  set  of  3D  coordinates to be used by subsequent vertex-based shape nodes (those
       derived from SoVertexShape) or shape nodes that use them as control points  (such  as  NURBS  curves  and
       surfaces).  Coordinates  are  specifed  as  rational 4-vectors; the corresponding 3D point is computed by
       dividing the first three components by the fourth. This node does not produce  a  visible  result  during
       rendering; it simply replaces the current coordinates in the rendering state for subsequent nodes to use.

       This  node  exists  primarily  for  use with NURBS curves and surfaces. However, it can be used to define
       coordinates for any vertex-based shape.

FIELDS

     SoMFVec4f           point
          Coordinate point(s).

METHODS

                         SoCoordinate4()
          Creates a coordinate node with default settings.

     static SoType       getClassTypeId()
          Returns type identifier for this class.

ACTION BEHAVIOR

       SoGLRenderAction, SoCallbackAction, SoGetBoundingBoxAction, SoRayPickAction
          Sets coordinates in current traversal state.

FILE FORMAT/DEFAULTS

       Coordinate4 {
          point  0 0 0 1
     }

SEE ALSO

       SoCoordinate4, SoIndexedNurbsCurve, SoIndexedNurbsSurface, SoNurbsCurve, SoNurbsProfile,  SoNurbsSurface,
       SoVertexShape

                                                                                            SoCoordinate4(3IV)()