112 lines
3.2 KiB
C++
112 lines
3.2 KiB
C++
/**
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* @file llvolumemgr.h
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* @brief LLVolumeMgr class.
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*
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* $LicenseInfo:firstyear=2002&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LL_LLVOLUMEMGR_H
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#define LL_LLVOLUMEMGR_H
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#include <map>
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#include "llvolume.h"
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#include "llpointer.h"
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class LLVolumeParams;
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class LLVolumeLODGroup;
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class LLVolumeLODGroup
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{
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LOG_CLASS(LLVolumeLODGroup);
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public:
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enum
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{
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NUM_LODS = 4
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};
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LLVolumeLODGroup(const LLVolumeParams ¶ms);
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~LLVolumeLODGroup();
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bool cleanupRefs();
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static S32 getDetailFromTan(const F32 tan_angle);
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static void getDetailProximity(const F32 tan_angle, F32 &to_lower, F32& to_higher);
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static F32 getVolumeScaleFromDetail(const S32 detail);
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static S32 getVolumeDetailFromScale(F32 scale);
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LLVolume* refLOD(const S32 detail);
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BOOL derefLOD(LLVolume *volumep);
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S32 getNumRefs() const { return mRefs; }
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const LLVolumeParams* getVolumeParams() const { return &mVolumeParams; };
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F32 dump();
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friend std::ostream& operator<<(std::ostream& s, const LLVolumeLODGroup& volgroup);
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protected:
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LLVolumeParams mVolumeParams;
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S32 mRefs;
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S32 mLODRefs[NUM_LODS];
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LLPointer<LLVolume> mVolumeLODs[NUM_LODS];
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static F32 mDetailThresholds[NUM_LODS];
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static F32 mDetailScales[NUM_LODS];
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S32 mAccessCount[NUM_LODS];
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};
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class LLVolumeMgr
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{
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public:
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LLVolumeMgr();
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virtual ~LLVolumeMgr();
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BOOL cleanup(); // Cleanup all volumes being managed, returns TRUE if no dangling references
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virtual LLVolumeLODGroup* getGroup( const LLVolumeParams& volume_params ) const;
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// whatever calls getVolume() never owns the LLVolume* and
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// cannot keep references for long since it may be deleted
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// later. For best results hold it in an LLPointer<LLVolume>.
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virtual LLVolume *refVolume(const LLVolumeParams &volume_params, const S32 detail);
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virtual void unrefVolume(LLVolume *volumep);
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void dump();
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// manually call this for mutex magic
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void useMutex();
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friend std::ostream& operator<<(std::ostream& s, const LLVolumeMgr& volume_mgr);
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protected:
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void insertGroup(LLVolumeLODGroup* volgroup);
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// Overridden in llphysics/abstract/utils/llphysicsvolumemanager.h
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virtual LLVolumeLODGroup* createNewGroup(const LLVolumeParams& volume_params);
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protected:
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typedef std::map<const LLVolumeParams*, LLVolumeLODGroup*, LLVolumeParams::compare> volume_lod_group_map_t;
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volume_lod_group_map_t mVolumeLODGroups;
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LLMutex* mDataMutex;
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};
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#endif // LL_LLVOLUMEMGR_H
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