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/**
* @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
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