llvolumemgr.h
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- /**
- * @file llvolumemgr.h
- * @brief LLVolumeMgr class.
- *
- * $LicenseInfo:firstyear=2002&license=viewergpl$
- *
- * Copyright (c) 2002-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
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- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_LLVOLUMEMGR_H
- #define LL_LLVOLUMEMGR_H
- #include <map>
- #include "llvolume.h"
- #include "llpointer.h"
- #include "llthread.h"
- class LLVolumeParams;
- class LLVolumeLODGroup;
- class LLVolumeLODGroup
- {
- LOG_CLASS(LLVolumeLODGroup);
-
- public:
- enum
- {
- NUM_LODS = 4
- };
- LLVolumeLODGroup(const LLVolumeParams ¶ms);
- ~LLVolumeLODGroup();
- bool cleanupRefs();
- static S32 getDetailFromTan(const F32 tan_angle);
- static void getDetailProximity(const F32 tan_angle, F32 &to_lower, F32& to_higher);
- static F32 getVolumeScaleFromDetail(const S32 detail);
- LLVolume* refLOD(const S32 detail);
- BOOL derefLOD(LLVolume *volumep);
- S32 getNumRefs() const { return mRefs; }
-
- const LLVolumeParams* getVolumeParams() const { return &mVolumeParams; };
- F32 dump();
- friend std::ostream& operator<<(std::ostream& s, const LLVolumeLODGroup& volgroup);
- protected:
- LLVolumeParams mVolumeParams;
- S32 mRefs;
- S32 mLODRefs[NUM_LODS];
- LLPointer<LLVolume> mVolumeLODs[NUM_LODS];
- static F32 mDetailThresholds[NUM_LODS];
- static F32 mDetailScales[NUM_LODS];
- S32 mAccessCount[NUM_LODS];
- };
- class LLVolumeMgr
- {
- public:
- LLVolumeMgr();
- virtual ~LLVolumeMgr();
- BOOL cleanup(); // Cleanup all volumes being managed, returns TRUE if no dangling references
- virtual LLVolumeLODGroup* getGroup( const LLVolumeParams& volume_params ) const;
- // whatever calls getVolume() never owns the LLVolume* and
- // cannot keep references for long since it may be deleted
- // later. For best results hold it in an LLPointer<LLVolume>.
- virtual LLVolume *refVolume(const LLVolumeParams &volume_params, const S32 detail);
- virtual void unrefVolume(LLVolume *volumep);
- void dump();
- // manually call this for mutex magic
- void useMutex();
- friend std::ostream& operator<<(std::ostream& s, const LLVolumeMgr& volume_mgr);
- protected:
- void insertGroup(LLVolumeLODGroup* volgroup);
- // Overridden in llphysics/abstract/utils/llphysicsvolumemanager.h
- virtual LLVolumeLODGroup* createNewGroup(const LLVolumeParams& volume_params);
- protected:
- typedef std::map<const LLVolumeParams*, LLVolumeLODGroup*, LLVolumeParams::compare> volume_lod_group_map_t;
- volume_lod_group_map_t mVolumeLODGroups;
- LLMutex* mDataMutex;
- };
- #endif // LL_LLVOLUMEMGR_H