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SoCounter(3IV)() SoCounter(3IV)()


SoCounter — triggered integer counter


SoBase > SoFieldContainer > SoEngine > SoCounter


#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:


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


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.


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.


(SoSFShort) output

Counts min-to-max in step increments.

(SoSFTrigger) syncOut

Triggers at cycle start.





Counter {

min 0 max 1 step 1 trigger reset 0


SoTimeCounter, SoEngineOutput