NAME

       SoCounter — triggered integer counter

INHERITS FROM

       SoBase > SoFieldContainer > SoEngine > SoCounter

SYNOPSIS

       #include <Inventor/engines/SoCounter.h>

          Inputs from class SoCounter:

     SoSFShort           min
     SoSFShort           max
     SoSFShort           step
     SoSFTrigger         trigger
     SoSFShort           reset

          Outputs from class SoCounter:

     (SoSFShort)         output
     (SoSFTrigger)       syncOut

          Methods from class SoCounter:

                         SoCounter()

          Methods from class SoEngine:

     static SoType       getClassTypeId()
     virtual int         getOutputs(SoEngineOutputList &list) const
     SoEngineOutput *    getOutput(const SbName &outputName) const
     SbBool              getOutputName(const SoEngineOutput *output, SbName &outputName) const
     SoEngine *          copy() const
     static SoEngine *   getByName(const SbName &name)
     static int          getByName(const SbName &name, SoEngineList &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 engine is a counter that outputs numbers, starting at a minimum value, increasing  by
       a  step value, and ending with a number that does not exceed the maximum value. It outputs
       the next number whenever the trigger input is touched. When the maximum number is reached,
       it starts counting from the beginning again.

       At  any time the counter can be reset to a specific value by setting the reset input field
       to that value.  The next time the counter is triggered it will start counting from  there.
       Note  that  the  counter will always output numbers based on the min, max and step values,
       and setting the reset value does not affect those input fields. If the reset value is  not
       a legal counter value, the counter will still behave as though it is.

          If reset is greater than max, the counter is set to max.
          If reset is less than min, the counter is set to min.
          If reset is between steps, the counter is set to the lower step value.

     Each  time  a counting cycle is started, the syncOut output is triggered. This output can be
     used to synchronize some other event with the counting cycle.

INPUTS

     SoSFShort           min
          Minimum value for the counter.

     SoSFShort           max
          Maximum value for the counter.

     SoSFShort           step
          Counter step value.

     SoSFTrigger         trigger
          Go to the next step.

     SoSFShort           reset
          At the next trigger, reset the counter to the specified value.

OUTPUTS

     (SoSFShort)         output
          Counts min-to-max in step increments.

     (SoSFTrigger)       syncOut
          Triggers at cycle start.

METHODS

                         SoCounter()
          Constructor

FILE FORMAT/DEFAULTS

       Counter {
          min      0
          max      1
          step     1
          trigger
          reset    0
     }

SEE ALSO

       SoTimeCounter, SoEngineOutput

                                                                                 SoCounter(3IV)()