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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 SoSField SoSField.h Inventor/fields/SoSField.h
\brief The SoSField class is the base class for fields which contains
only a single value.
\ingroup fields
All field types which should always contain only a single member
value inherits this class. SoSField is an abstract class.
You use methods setValue() and getValue() to store or fetch the
value of single-value fields. Example:
\code
SoSpotLight * lightnode = new SoSpotLight;
lightnode->on.setValue(TRUE); // The "on" field of SoSpotLight is
// a single value field of type SoSFBool.
...
...
// Change lightswitch.
if (lightnode->on.getValue() == FALSE)
lightnode->on = TRUE; // We can use operator = instead of setValue().
else
lightnode->on = FALSE;
...
\endcode
When nodes, engines or other types of field containers are written
to file, their single-value fields are written to file in this
format:
\code
containerclass {
fieldname value
fieldname value
...
}
\endcode
..like this, for instance, a SpotLight node from a scene
graph which will be default \e off when read back from file:
\code
SpotLight {
on FALSE
}
\endcode
\sa SoMField
*/
// FIXME: document the SO_SFIELD_HEADER, SO_SFIELD_SOURCE and
// SO_SFIELD_INIT_CLASS macros. Also write a note (with link to an
// online bookstore?) about the Inventor Toolmaker, if the application
// programmer should need to extend Coin with new single-value
// fields. 20010913 mortene.
// *************************************************************************
#include <Inventor/fields/SoSField.h>
#include <cassert>
#include <Inventor/fields/SoSubField.h>
#include <Inventor/errors/SoDebugError.h>
#include "tidbitsp.h"
// *************************************************************************
SoType SoSField::classTypeId STATIC_SOTYPE_INIT;
// *************************************************************************
// Overridden from parent class.
SoType
SoSField::getClassTypeId(void)
{
return SoSField::classTypeId;
}
/*!
The SoSField constructor is protected, as this is an abstract
class.
*/
SoSField::SoSField(void)
{
}
/*!
The SoSField destructor is empty, and is only defined so we could
make it virtual.
*/
SoSField::~SoSField()
{
}
// Overridden from parent class.
void
SoSField::initClass(void)
{
PRIVATE_FIELD_INIT_CLASS(SoSField, "SField", inherited, NULL);
}
void
SoSField::atexit_cleanup(void)
{
SoType::removeType(SoSField::classTypeId.getName());
SoSField::classTypeId STATIC_SOTYPE_INIT;
}
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