1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/**
* @file llviewerpartsim.h
* @brief LLViewerPart class header file
*
* $LicenseInfo:firstyear=2003&license=viewergpl$
*
* Copyright (c) 2003-2007, 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* 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_LLVIEWERPARTSIM_H
#define LL_LLVIEWERPARTSIM_H
#include "lldarrayptr.h"
#include "llframetimer.h"
#include "llmemory.h"
#include "llpartdata.h"
class LLViewerImage;
class LLViewerPart;
class LLViewerPartSource;
class LLViewerRegion;
class LLViewerImage;
class LLVOPartGroup;
typedef void (*LLVPCallback)(LLViewerPart &part, const F32 dt);
///////////////////
//
// An individual particle
//
class LLViewerPart : public LLPartData, public LLRefCount
{
protected:
~LLViewerPart();
public:
LLViewerPart();
void init(LLPointer<LLViewerPartSource> sourcep, LLViewerImage *imagep, LLVPCallback cb);
U32 mPartID; // Particle ID used primarily for moving between groups
F32 mLastUpdateTime; // Last time the particle was updated
F32 mSkipOffset; // Offset against current group mSkippedTime
LLVPCallback mVPCallback; // Callback function for more complicated behaviors
LLPointer<LLViewerPartSource> mPartSourcep; // Particle source used for this object
// Current particle state (possibly used for rendering)
LLPointer<LLViewerImage> mImagep;
LLVector3 mPosAgent;
LLVector3 mVelocity;
LLVector3 mAccel;
LLColor4 mColor;
LLVector2 mScale;
static U32 sNextPartID;
};
class LLViewerPartGroup
{
public:
LLViewerPartGroup(const LLVector3 ¢er,
const F32 box_radius);
virtual ~LLViewerPartGroup();
void cleanup();
BOOL addPart(LLViewerPart* part, const F32 desired_size = -1.f);
void updateParticles(const F32 lastdt);
BOOL posInGroup(const LLVector3 &pos, const F32 desired_size = -1.f);
void shift(const LLVector3 &offset);
typedef std::vector<LLPointer<LLViewerPart> > part_list_t;
part_list_t mParticles;
const LLVector3 &getCenterAgent() const { return mCenterAgent; }
S32 getCount() const { return (S32) mParticles.size(); }
LLViewerRegion *getRegion() const { return mRegionp; }
void removeParticlesByID(const U32 source_id);
LLPointer<LLVOPartGroup> mVOPartGroupp;
BOOL mUniformParticles;
U32 mID;
F32 mSkippedTime;
protected:
LLVector3 mCenterAgent;
F32 mBoxRadius;
LLVector3 mMinObjPos;
LLVector3 mMaxObjPos;
LLViewerRegion *mRegionp;
};
class LLViewerPartSim
{
public:
LLViewerPartSim();
virtual ~LLViewerPartSim();
typedef std::vector<LLViewerPartGroup *> group_list_t;
typedef std::vector<LLPointer<LLViewerPartSource> > source_list_t;
void shift(const LLVector3 &offset);
void updateSimulation();
void addPartSource(LLPointer<LLViewerPartSource> sourcep);
void cleanupRegion(LLViewerRegion *regionp);
BOOL shouldAddPart(); // Just decides whether this particle should be added or not (for particle count capping)
F32 maxRate() // Return maximum particle generation rate
{
if (sParticleCount >= MAX_PART_COUNT)
{
return 1.f;
}
if (sParticleCount > PART_THROTTLE_THRESHOLD*sMaxParticleCount)
{
return (((F32)sParticleCount/(F32)sMaxParticleCount)-PART_THROTTLE_THRESHOLD)*PART_THROTTLE_RESCALE;
}
return 0.f;
}
F32 getRefRate() { return sParticleAdaptiveRate; }
F32 getBurstRate() {return sParticleBurstRate; }
void addPart(LLViewerPart* part);
void updatePartBurstRate() ;
void clearParticlesByID(const U32 system_id);
void clearParticlesByOwnerID(const LLUUID& task_id);
void removeLastCreatedSource();
const source_list_t* getParticleSystemList() const { return &mViewerPartSources; }
friend class LLViewerPartGroup;
BOOL aboveParticleLimit() const { return sParticleCount > sMaxParticleCount; }
static void setMaxPartCount(const S32 max_parts) { sMaxParticleCount = max_parts; }
static S32 getMaxPartCount() { return sMaxParticleCount; }
static void incPartCount(const S32 count) { sParticleCount += count; }
static void decPartCount(const S32 count) { sParticleCount -= count; }
U32 mID;
protected:
LLViewerPartGroup *createViewerPartGroup(const LLVector3 &pos_agent, const F32 desired_size);
LLViewerPartGroup *put(LLViewerPart* part);
group_list_t mViewerPartGroups;
source_list_t mViewerPartSources;
LLFrameTimer mSimulationTimer;
static S32 sMaxParticleCount;
static S32 sParticleCount;
static F32 sParticleAdaptiveRate;
static F32 sParticleBurstRate;
static const S32 MAX_PART_COUNT;
static const F32 PART_THROTTLE_THRESHOLD;
static const F32 PART_THROTTLE_RESCALE;
static const F32 PART_ADAPT_RATE_MULT;
static const F32 PART_ADAPT_RATE_MULT_RECIP;
};
#endif // LL_LLVIEWERPARTSIM_H
|
