SoMFEngine(3IV)

NAME
     SoMFEngine - multiple-value field containing any number of pointers to
     engines

INHERITS FROM
     SoField > SoMField > SoMFEngine

SYNOPSIS
     #include <Inventor/fields/SoMFEngine.h>

          Methods from class SoMFEngine:

     static SoType       getClassTypeId()
     virtual void        getTypeId() const
     SoEngine *          operator [](int i) const
     const SoEngine * *  getValues(int start) const
     int                 find(SoEngine * targetValue, SbBool addIfNotFound =
                              FALSE)
     void                setValues(int start, int num, const SoEngine *
                              *newValues)
     void                set1Value(int index, SoEngine * newValue)
     SoEngine *          operator =(SoEngine * newValue)
     void                setValue(SoEngine * newValue)
     int                 operator ==(const SoMFEngine &f) const
     int                 operator !=(const SoMFEngine &f) const
     SoEngine * *        startEditing()
     void                finishEditing()

          Methods from class SoMField:

     int                 getNum() const
     void                setNum(int num)
     virtual void        deleteValues(int start, int num = -1)
     virtual void        insertSpace(int start, int num)
     SbBool              set1(int index, const char *valueString)
     void                get1(int index, SbString &valueString)

          Methods from class SoField:

     void                setIgnored(SbBool ignore)
     SbBool              isIgnored() const
     SbBool              isDefault() const
     virtual SbBool      isOfType(SoType type) const
     SbBool              set(const char *valueString)
     void                get(SbString &valueString)
     void                touch()
     SbBool              connectFrom(SoField *fromField)
     SbBool              connectFrom(SoEngineOutput *fromEngine)
     void                disconnect()
     SbBool              isConnected() const
     SbBool              isConnectedFromField() const
     SbBool              getConnectedField(SoField *&writingField) const
     SbBool              isConnectedFromEngine() const
     SbBool              getConnectedEngine(SoEngineOutput *&engineOutput)
                              const
     void                enableConnection(SbBool flag)
     SbBool              isConnectionEnabled() const
     int                 getForwardConnections(SoFieldList &list) const
     SoFieldContainer *  getContainer() const


DESCRIPTION
     This field maintains a set of pointers to SoEngine instances, correctly
     maintaining their reference counts.

     SoMFEngines are written to file as one or more engines. When more than
     one value is present, all of the values are enclosed in square brackets
     and separated by commas; for example:

          [ ElapsedTime { }, OneShot { duration 2.0 }, USE myCalculator ]



METHODS
     static SoType       getClassTypeId()
     virtual void        getTypeId() const
          Returns the type for this class or a particular object of this
          class.

     SoEngine *          operator [](int i) const
          Returns the i'th value of the field. Indexing past the end of the
          field (passing in i greater than getNum()) will return garbage.

     const SoEngine * *  getValues(int start) const
          Returns a pointer into the array of values in the field, starting at
          index start. The values are read-only; see the
          startEditing()/finishEditing() methods for a way of modifying values
          in place.

     int                 find(SoEngine * targetValue, SbBool addIfNotFound =
                              FALSE)
          Finds the given value in the array and returns the index of that
          value in the array. If the value is not found, -1 is returned. If
          addIfNotFound is set, then targetValue is added to the end of the
          array (but -1 is still returned).

     void                setValues(int start, int num, const SoEngine *
                              *newValues)
          Sets num values starting at index start to the values in newValues.
          The array will be automatically be made larger to accomodate the new
          values, if necessary.

     void                set1Value(int index, SoEngine * newValue)
          Sets the index'th value in the array to newValue. The array will be
          automatically expanded, if necessary.

     SoEngine *          operator =(SoEngine * newValue)
     void                setValue(SoEngine * newValue)
          Sets the first value in the array to newValue, and deletes the
          second and subsequent values.

     int                 operator ==(const SoMFEngine &f) const
     int                 operator !=(const SoMFEngine &f) const
          Returns TRUE if all of the values of this field equal (do not equal)
          those of the given field. If the fields are different types FALSE
          will always be returned (even if one field is an SoMFFloat with one
          value of 1.0 and the other is an SoMFInt with a value of 1, for
          example).

     SoEngine * *        startEditing()
     void                finishEditing()
          startEditing() returns a pointer to the internally-maintained array
          that can be modified. The values in the array may be changed, but
          values cannot be added or removed. It is illegal to call any other
          editing methods between startEditing() and finishEditing() (e.g.
          set1Value(), setValue(), etc).

          Fields, engines or sensors connected to this field and sensors are
          not notified that this field has changed until finishEditing() is
          called. Calling finishEditing() always sets the isDefault() flag to
          FALSE and informs engines and sensors that the field changed, even
          if none of the values actually were changed.