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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 SoSeparator 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_SEPARATOR_
#define _SO_SEPARATOR_
#include <Inventor/nodes/SoGroup.h>
#include <Inventor/fields/SoSFEnum.h>
class SoBoundingBoxCache;
class SoGLCacheList;
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoSeparator
//
// Separator group node: state is saved before traversing children
// and restored afterwards.
//
//////////////////////////////////////////////////////////////////////////////
#include <Inventor/fields/SoSFBitMask.h>
// C-api: prefix=SoSep
// C-api: public=renderCaching, boundingBoxCaching, renderCulling, pickCulling
class SoSeparator : public SoGroup {
SO_NODE_HEADER(SoSeparator);
public:
enum CacheEnabled { // Possible values for caching
OFF, // Never build or use a cache
ON, // Always try to build a cache
AUTO // Decide based on some heuristic
};
// Fields
SoSFEnum renderCaching; // OFF/ON/AUTO
SoSFEnum boundingBoxCaching;// OFF/ON/AUTO
SoSFEnum renderCulling; // OFF/ON/AUTO
SoSFEnum pickCulling; // OFF/ON/AUTO
// Constructor
SoSeparator();
// Constructor that takes approximate number of children
// C-api: name=CreateN
SoSeparator(int nChildren);
// Overrides default method on SoNode
virtual SbBool affectsState() const;
// Set/get the number of render caches each separator will have
// (2, by default). The more render caches each separator is
// allowed to have, the more memory used. setNumRenderCaches only
// affects separators that are created after it is called, not
// separators that were created before. Setting zero render
// caches globally turns off render caching.
static void setNumRenderCaches(int howMany);
static int getNumRenderCaches();
SoEXTENDER public:
// Implement actions
virtual void doAction(SoAction *action);
virtual void callback(SoCallbackAction *action);
virtual void getBoundingBox(SoGetBoundingBoxAction *action);
virtual void getMatrix(SoGetMatrixAction *action);
virtual void GLRender(SoGLRenderAction *action);
virtual void handleEvent(SoHandleEventAction *action);
virtual void rayPick(SoRayPickAction *action);
virtual void search(SoSearchAction *action);
// These methods make render traversal faster by implementing
// different rendering paths corresponding to different action
// path codes.
virtual void GLRenderBelowPath(SoGLRenderAction *action);
virtual void GLRenderInPath(SoGLRenderAction *action);
virtual void GLRenderOffPath(SoGLRenderAction *action);
SoINTERNAL public:
static void initClass();
virtual void notify(SoNotList *list);
protected:
// Returns TRUE if this separator can be culled because it is
// outside the cull volume. The cullResults flags come from the
// GLRenderAction->getCullTestResults() method, and track the
// results of previous cull tests to save work when we know we're
// completely inside the view volume.
virtual SbBool cullTest(SoGLRenderAction *action, int &cullResults);
virtual SbBool readInstance(SoInput *in, unsigned short flags);
virtual ~SoSeparator();
private:
// Each separator that is created will contain up to this many
// render caches.
static int numRenderCaches;
SoBoundingBoxCache *bboxCache; // Cache for bounding boxes
SoGLCacheList *cacheList; // Caches for GL rendering
};
#endif /* _SO_SEPARATOR_ */
|
