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
|
/**
* @file llvograss.h
* @brief Description of LLVOGrass class
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2009, 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://secondlifegrid.net/programs/open_source/licensing/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://secondlifegrid.net/programs/open_source/licensing/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_LLVOGRASS_H
#define LL_LLVOGRASS_H
#include "llviewerobject.h"
#include "lldarray.h"
#include <map>
class LLSurfacePatch;
class LLViewerTexture;
class LLVOGrass : public LLAlphaObject
{
public:
LLVOGrass(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
// Initialize data that's only inited once per class.
static void initClass();
static void cleanupClass();
virtual U32 getPartitionType() const;
/*virtual*/ U32 processUpdateMessage(LLMessageSystem *mesgsys,
void **user_data,
U32 block_num,
const EObjectUpdateType update_type,
LLDataPacker *dp);
static void import(LLFILE *file, LLMessageSystem *mesgsys, const LLVector3 &pos);
/*virtual*/ void exportFile(LLFILE *file, const LLVector3 &position);
void updateDrawable(BOOL force_damped);
/*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
/*virtual*/ BOOL updateGeometry(LLDrawable *drawable);
/*virtual*/ void getGeometry(S32 idx,
LLStrider<LLVector3>& verticesp,
LLStrider<LLVector3>& normalsp,
LLStrider<LLVector2>& texcoordsp,
LLStrider<LLColor4U>& colorsp,
LLStrider<U16>& indicesp);
void updateFaceSize(S32 idx) { }
/*virtual*/ void updateTextures();
/*virtual*/ BOOL updateLOD();
/*virtual*/ void setPixelAreaAndAngle(LLAgent &agent); // generate accurate apparent angle and area
void plantBlades();
/*virtual*/ BOOL isActive() const; // Whether this object needs to do an idleUpdate.
BOOL idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time);
/*virtual*/ BOOL lineSegmentIntersect(const LLVector3& start, const LLVector3& end,
S32 face = -1, // which face to check, -1 = ALL_SIDES
BOOL pick_transparent = FALSE,
S32* face_hit = NULL, // which face was hit
LLVector3* intersection = NULL, // return the intersection point
LLVector2* tex_coord = NULL, // return the texture coordinates of the intersection point
LLVector3* normal = NULL, // return the surface normal at the intersection point
LLVector3* bi_normal = NULL // return the surface bi-normal at the intersection point
);
static S32 sMaxGrassSpecies;
struct GrassSpeciesData
{
LLUUID mTextureID;
F32 mBladeSizeX;
F32 mBladeSizeY;
};
typedef std::map<U32, GrassSpeciesData*> SpeciesMap;
U8 mSpecies; // Species of grass
F32 mBladeSizeX;
F32 mBladeSizeY;
LLSurfacePatch *mPatch; // Stores the land patch where the grass is centered
U64 mLastPatchUpdateTime;
LLVector3 mGrassBend; // Accumulated wind (used for blowing trees)
LLVector3 mGrassVel;
LLVector3 mWind;
F32 mBladeWindAngle;
F32 mBWAOverlap;
protected:
~LLVOGrass();
private:
void updateSpecies();
F32 mLastHeight; // For cheap update hack
S32 mNumBlades;
static SpeciesMap sSpeciesTable;
};
#endif // LL_VO_GRASS_
|
