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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 SoSwitch node class.
|
| Author(s) : Paul S. Strauss, Nick Thompson
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_SWITCH_
#define _SO_SWITCH_
#include <Inventor/fields/SoSFInt32.h>
#include <Inventor/nodes/SoGroup.h>
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoSwitch
//
// Switch group node: traverses only the child indicated by integer
// "whichChild" field. If this field is SO_SWITCH_NONE, no children
// are traversed, while SO_SWITCH_INHERIT means inherit the index
// from the current switch state, doing a modulo operation to make
// sure the child index is within the correct bounds of the switch
// node.
//
//////////////////////////////////////////////////////////////////////////////
#define SO_SWITCH_NONE (-1) /* Don't traverse any children */
#define SO_SWITCH_INHERIT (-2) /* Inherit value from state */
#define SO_SWITCH_ALL (-3) /* Traverse all children */
// C-api: public=whichChild
class SoSwitch : public SoGroup {
SO_NODE_HEADER(SoSwitch);
public:
// Fields
SoSFInt32 whichChild; // Child to traverse
// Default constructor
SoSwitch();
// Constructor that takes approximate number of children
// C-api: name=CreateN
SoSwitch(int nChildren);
// Overrides method in SoNode to return FALSE if there is no
// selected child or the selected child does not affect the state.
virtual SbBool affectsState() const;
SoEXTENDER public:
// Implement actions
virtual void doAction(SoAction *action);
virtual void callback(SoCallbackAction *action);
virtual void GLRender(SoGLRenderAction *action);
virtual void pick(SoPickAction *action);
virtual void getBoundingBox(SoGetBoundingBoxAction *action);
virtual void handleEvent(SoHandleEventAction *action);
virtual void getMatrix(SoGetMatrixAction *action);
virtual void search(SoSearchAction *action);
virtual void write(SoWriteAction *action);
SoINTERNAL public:
static void initClass();
protected:
// Generic traversal of children
void traverseChildren(SoAction *action);
virtual ~SoSwitch();
private:
// Traverses correct child. If matchIndex >=0, child index must match
void doChild(SoAction *action, int matchIndex = -1);
};
#endif /* _SO_SWITCH_ */
|
