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/**************************************************************************\
*
* This file is part of the Coin 3D visualization library.
* Copyright (C) by Kongsberg Oil & Gas Technologies.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.GPL at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using Coin with software that can not be combined with the GNU
* GPL, and for taking advantage of the additional benefits of our
* support services, please contact Kongsberg Oil & Gas Technologies
* about acquiring a Coin Professional Edition License.
*
* See http://www.coin3d.org/ for more information.
*
* Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
* http://www.sim.no/ sales@sim.no coin-support@coin3d.org
*
\**************************************************************************/
/*!
\class SoOnOff SoOnOff.h Inventor/engines/SoOnOff.h
\brief The SoOnOff engine is a simple on/off switch.
\ingroup engines
*/
#include <Inventor/engines/SoOnOff.h>
#include <Inventor/lists/SoEngineOutputList.h>
#include <Inventor/fields/SoSFBool.h>
#include "engines/SoSubEngineP.h"
/*!
\var SoSFTrigger SoOnOff::on
An input signal on this trigger makes the SoOnOff::isOn output
become \c TRUE.
*/
/*!
\var SoSFTrigger SoOnOff::off
An input signal on this trigger makes the SoOnOff::isOn output
become \c FALSE.
*/
/*!
\var SoSFTrigger SoOnOff::toggle
An input signal on this trigger toggles the \c TRUE or \c FALSE
value of the SoOnOff::isOn output.
*/
/*!
\var SoEngineOutput SoOnOff::isOn
(SoSFBool) Whether the engine is "on" or not.
*/
/*!
\var SoEngineOutput SoOnOff::isOff
(SoSFBool) Always the opposite value of SoOnOff::isOn.
*/
SO_ENGINE_SOURCE(SoOnOff);
/*!
Default constructor.
*/
SoOnOff::SoOnOff(void)
{
SO_ENGINE_INTERNAL_CONSTRUCTOR(SoOnOff);
SO_ENGINE_ADD_INPUT(on, ());
SO_ENGINE_ADD_INPUT(off, ());
SO_ENGINE_ADD_INPUT(toggle, ());
SO_ENGINE_ADD_OUTPUT(isOn, SoSFBool);
SO_ENGINE_ADD_OUTPUT(isOff, SoSFBool);
this->state = FALSE;
}
// Documented in superclass.
void
SoOnOff::initClass(void)
{
SO_ENGINE_INTERNAL_INIT_CLASS(SoOnOff);
}
/*!
Destructor is protected because engines are reference counted.
*/
SoOnOff::~SoOnOff()
{
}
// Documented in superclass.
void
SoOnOff::evaluate(void)
{
SO_ENGINE_OUTPUT(isOn, SoSFBool, setValue(this->state));
SO_ENGINE_OUTPUT(isOff, SoSFBool, setValue(!this->state));
}
// Documented in superclass.
void
SoOnOff::inputChanged(SoField * which)
{
if (which == &on) this->state = TRUE;
else if (which == &off) this->state = FALSE;
if (which == &toggle) this->state = this->state ? FALSE : TRUE;
}
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