/indra/llmath/llvolumemgr.h
C++ Header | 112 lines | 59 code | 23 blank | 30 comment | 0 complexity | a7651ab9b25827799b5d4a9e44538fed MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @file llvolumemgr.h
- * @brief LLVolumeMgr class.
- *
- * $LicenseInfo:firstyear=2002&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * 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;
- * version 2.1 of the License only.
- *
- * 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.
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #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);
- static S32 getVolumeDetailFromScale(F32 scale);
- 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