119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
/**
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* @file llvolumemgr.h
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* @brief LLVolumeMgr class.
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*
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* $LicenseInfo:firstyear=2002&license=viewergpl$
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*
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* Copyright (c) 2002-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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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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#include "llthread.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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