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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/**
* @file llvowater.h
* @brief Description of LLVOWater class
*
* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#ifndef LL_VOWATER_H
#define LL_VOWATER_H
#include "llviewerobject.h"
#include "llviewerimage.h"
#include "v2math.h"
#include "llfft.h"
#include "llwaterpatch.h"
const U32 N_RES = 16; //32 // number of subdivisions of wave tile
const U8 WAVE_STEP = 8;
/*
#define N_DET 32 // number of subdivisions of wave tile for details
class LLWaterDetail
{
protected:
S32 mResolution;
LLViewerImage *mTex;
U8 *mTexData;
public:
LLWaterDetail() : mResolution(N_DET), mTex(0), mTexData(0) {init();}
void init();
~LLWaterDetail()
{
delete[] mTexData;
mTexData = NULL;
}
//void initEmpty();
void setPixel(const LLVector3 &norm, const S32 i, const S32 j)
{
S32 offset = (i * mResolution + j) * 3;
mTexData[offset] = llround(norm.mV[VX] * 255);
mTexData[offset+1] = llround(norm.mV[VX] * 255);
mTexData[offset+2] = llround(norm.mV[VX] * 255);
}
void setPixel(F32 x, F32 y, F32 z, const S32 i, const S32 j)
{
S32 offset = (i * mResolution + j) * 3;
mTexData[offset] = llround(x * 255);
mTexData[offset+1] = llround(y * 255);
mTexData[offset+2] = llround(z * 255);
}
S32 getResolution() { return mResolution; }
void createDetailBumpmap(F32* u, F32* v);
void createTexture() const { mTex->createTexture(); }
void bindTexture() const { mTex->bindTexture(); }
LLViewerImage* getTexture() const { return mTex; }
};
*/
class LLWaterSurface
{
protected:
BOOL mInitialized;
LLVector3 mWind;
F32 mA;
F32 mVisc; // viscosity of the fluid
F32 mShininess;
//LLWaterDetail* mDetail;
LLFFTPlan mPlan;
F32 mOmega[N_RES+1][N_RES+1]; // wave frequency
COMPLEX mHtilda0[N_RES+1][N_RES+1]; // wave amplitudes and phases at time 0.
LLVector3 mNorms[N_RES][N_RES];
COMPLEX mHtilda[N_RES * N_RES];
public:
LLWaterSurface();
~LLWaterSurface() {}
//void initSpecularLookup();
F32 phillips(const LLVector2& k, const LLVector2& wind_n, F32 L, F32 L_small);
void initAmplitudes();
F32 height(S32 i, S32 j) const { return mHtilda[i * N_RES + j].re; }
F32 heightWrapped(S32 i, S32 j) const
{
return height((i + N_RES) % N_RES, (j + N_RES) % N_RES);
}
void generateWaterHeightField(F64 time);
void calcNormals();
void getHeightAndNormal(F32 i, F32 j, F32& height, LLVector3& normal) const;
void getIntegerHeightAndNormal(S32 i, S32 j, F32& height, LLVector3& normal) const;
F32 agentDepth() const;
// const LLWaterHeightField* hField() const { return &mHeightField; }
//void generateDetail(F64 t);
//void fluidSolver(F32* u, F32* v, F32* u0, F32* v0, F64 dt);
const LLVector3& getWind() const { return mWind; }
void setWind(const LLVector3& w) { mWind = w; } // initialized = 0?
F32 A() const { return mA; }
void setA(F32 a) { mA = a; }
F32 getShininess() const { return mShininess; }
//LLViewerImage* getSpecularLookup() const { return mSpecularLookup; }
//LLViewerImage* getDetail() const { return mDetail->getTexture(); }
};
class LLVOWater;
class LLWaterGrid
{
public:
LLWaterGrid();
void init();
void cleanup();
LLWaterSurface* getWaterSurface() { return &mWater; }
void update();
void updateTree(const LLVector3 &camera_pos, const LLVector3 &look_at, F32 clip_far,
BOOL restart);
void updateVisibility(const LLVector3 &camera_pos, const LLVector3 &look_at, F32 clip_far);
LLVector3 mRegionOrigin;
LLVector3* mVtx;
LLVector3* mNorms;
U32 mRegionWidth;
U32 mMaxGridSize;
U32 mPatchRes;
U32 mMinStep;
U32 mStepsInRegion;
LLWaterPatch* mPatches;
LLRoam mRoam;
F32 mResIncrease;
U32 mResDecrease;
LLVOWater* mTab[5][5];
U32 gridDim() const { return mGridDim; }
U32 rowSize() const { return mGridDim1; }
void setGridDim(U32 gd) { mGridDim = gd; mGridDim1 = mGridDim + 1; }
U32 index(const LL2Coord& c) const { return c.y() * mGridDim1 + c.x(); }
U32 index(U32 x, U32 y) const { return y * mGridDim1 + x; }
LLVector3 vtx(const LL2Coord& c, F32 raised) const
{
LLVector3 v = mVtx[index(c)];
v.mV[VZ] += raised;
return v;
}
LLVector3 vtx(U32 x, U32 y, F32 raised) const
{
LLVector3 v = mVtx[index(x, y)];
v.mV[VZ] += raised;
return v;
}
void setVertex(const U32 x, const U32 y, const F32 raised, LLVector3 &vertex) const
{
vertex = mVtx[index(x, y)];
vertex.mV[VZ] += raised;
}
void setCamPosition(LL2Coord& cam, const LLVector3& cam_pos)
{
cam.x() = llround((cam_pos.mV[VX] - mRegionOrigin.mV[VX]) / mMinStep);
cam.y() = llround((cam_pos.mV[VY] - mRegionOrigin.mV[VY]) / mMinStep);
}
LLVector3 vtx(const LL2Coord& c) const { return mVtx[index(c)]; }
LLVector3 norm(const LL2Coord& c) const { return mNorms[index(c)]; }
LLVector3 vtx(U32 x, U32 y) const { return mVtx[index(x, y)]; }
LLVector3 norm(U32 x, U32 y) const { return mNorms[index(x, y)]; }
protected:
LLWaterSurface mWater;
U32 mGridDim;
U32 mGridDim1;
};
class LLSurface;
class LLHeavenBody;
class LLVOSky;
class LLFace;
class LLVOWater : public LLViewerObject
{
public:
LLVOWater(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
virtual ~LLVOWater() {}
/*virtual*/ void markDead();
// Initialize data that's only inited once per class.
static void initClass();
static void cleanupClass();
/*virtual*/ BOOL idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time);
/*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
/*virtual*/ BOOL updateGeometry(LLDrawable *drawable);
BOOL updateGeometryFlat(LLDrawable *drawable);
BOOL updateGeometryHeightFieldSimple(LLDrawable *drawable);
BOOL updateGeometryHeightFieldRoam(LLDrawable *drawable);
/*virtual*/ void updateDrawable(BOOL force_damped);
/*virtual*/ void updateTextures(LLAgent &agent);
/*virtual*/ void setPixelAreaAndAngle(LLAgent &agent); // generate accurate apparent angle and area
/*virtual*/ BOOL isActive() const; // Whether this object needs to do an idleUpdate.
void setUseTexture(const BOOL use_texture);
static void generateNewWaves(F64 time);
static LLWaterSurface* getWaterSurface() { return sGrid->getWaterSurface(); }//return &mWater; }
static const LLWaterGrid* getGrid() { return sGrid; }
protected:
BOOL mUseTexture;
static LLWaterGrid *sGrid;
};
#endif // LL_VOSURFACEPATCH_H
|
