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/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990,91 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| This file defines the abstract SoEXTENDER SoFloatElement class.
| This is a base class used to make the library smaller by
| sharing code.
|
| Classes:
| SoFloatElement
|
| Author(s) : Gavin Bell
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_FLOAT_ELEMENT
#define _SO_FLOAT_ELEMENT
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoFloatElement
//
// Subclasses store a single float, int, or enum value. This class
// defines generic matches() and copy() methods.
//
//////////////////////////////////////////////////////////////////////////////
#include <Inventor/elements/SoSubElement.h>
SoEXTENDER class SoFloatElement : public SoElement {
SO_ELEMENT_ABSTRACT_HEADER(SoFloatElement);
public:
// Comparison based on value of floats
virtual SbBool matches(const SoElement *elt) const;
// Copy method, takes care copying the data.
virtual SoElement *copyMatchInfo() const;
// Prints element (for debugging)
virtual void print(FILE *fp) const;
SoINTERNAL public:
// Initializes the SoFloatElement class
static void initClass();
protected:
// Set value. Derived classes have static inline methods
// that pass in the stack index and cast their type into a float.
// This just gets an appropriate instance and calls the virtual
// set.
static void set(int stackIndex, SoState *state, float value);
// Virtual set that subclasses can override to implement
// side-effect behaviors.
virtual void setElt(float value);
// Get value. Derived classes have static inline methods to pass
// in the stackIndex and cast the returned value to the right type.
static float get(int stackIndex, SoState *state)
{return ((const SoFloatElement *)
getConstElement(state, stackIndex))->data;}
// Storage for data.
float data;
// Destructor
virtual ~SoFloatElement();
};
#endif /* _SO_FLOAT_ELEMENT */
|
