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
|
/**
* @file llsurfacepatch.h
* @brief LLSurfacePatch class definition
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* 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_LLSURFACEPATCH_H
#define LL_LLSURFACEPATCH_H
#include "v3math.h"
#include "v3dmath.h"
#include "llmemory.h"
class LLSurface;
class LLVOSurfacePatch;
class LLVector2;
class LLColor4U;
class LLAgent;
// A patch shouldn't know about its visibility since that really depends on the
// camera that is looking (or not looking) at it. So, anything about a patch
// that is specific to a camera should be in the class below.
class LLPatchVisibilityInfo
{
public:
LLPatchVisibilityInfo() :
mbIsVisible(FALSE),
mDistance(0.f),
mRenderLevel(0),
mRenderStride(0) { };
~LLPatchVisibilityInfo() { };
BOOL mbIsVisible;
F32 mDistance; // Distance from camera
S32 mRenderLevel;
U32 mRenderStride;
};
class LLSurfacePatch
{
public:
LLSurfacePatch();
~LLSurfacePatch();
void reset(const U32 id);
void connectNeighbor(LLSurfacePatch *neighborp, const U32 direction);
void disconnectNeighbor(LLSurface *surfacep);
void setNeighborPatch(const U32 direction, LLSurfacePatch *neighborp);
LLSurfacePatch *getNeighborPatch(const U32 direction) const;
void colorPatch(const U8 r, const U8 g, const U8 b);
BOOL updateTexture();
void updateVerticalStats();
void updateCompositionStats();
void updateNormals();
void updateEastEdge();
void updateNorthEdge();
void updateCameraDistanceRegion( const LLVector3 &pos_region);
void updateVisibility();
void dirtyZ(); // Dirty the z values of this patch
void setHasReceivedData();
BOOL getHasReceivedData() const;
F32 getDistance() const;
F32 getMaxZ() const;
F32 getMinZ() const;
F32 getMeanComposition() const;
F32 getMinComposition() const;
F32 getMaxComposition() const;
const LLVector3 &getCenterRegion() const;
const U64 &getLastUpdateTime() const;
LLSurface *getSurface() const { return mSurfacep; }
LLVector3 getPointAgent(const U32 x, const U32 y) const; // get the point at the offset.
LLVector2 getTexCoords(const U32 x, const U32 y) const;
void calcNormal(const U32 x, const U32 y, const U32 stride);
const LLVector3 &getNormal(const U32 x, const U32 y) const;
void eval(const U32 x, const U32 y, const U32 stride,
LLVector3 *vertex, LLVector3 *normal, LLVector2 *tex0, LLVector2 *tex1);
LLVector3 getOriginAgent() const;
const LLVector3d &getOriginGlobal() const;
void setOriginGlobal(const LLVector3d &origin_global);
// connectivity -- each LLPatch points at 5 neighbors (or NULL)
// +---+---+---+
// | | 2 | 5 |
// +---+---+---+
// | 3 | 0 | 1 |
// +---+---+---+
// | 6 | 4 | |
// +---+---+---+
BOOL getVisible() const;
U32 getRenderStride() const;
S32 getRenderLevel() const;
void setSurface(LLSurface *surfacep);
void setDataZ(F32 *data_z) { mDataZ = data_z; }
void setDataNorm(LLVector3 *data_norm) { mDataNorm = data_norm; }
F32 *getDataZ() const { return mDataZ; }
void dirty(); // Mark this surface patch as dirty...
void clearDirty() { mDirty = FALSE; }
void clearVObj();
public:
BOOL mHasReceivedData; // has the patch EVER received height data?
BOOL mSTexUpdate; // Does the surface texture need to be updated?
protected:
LLSurfacePatch *mNeighborPatches[8]; // Adjacent patches
BOOL mNormalsInvalid[9]; // Which normals are invalid
BOOL mDirty;
BOOL mDirtyZStats;
BOOL mHeightsGenerated;
U32 mDataOffset;
F32 *mDataZ;
LLVector3 *mDataNorm;
// Pointer to the LLVOSurfacePatch object which is used in the new renderer.
LLPointer<LLVOSurfacePatch> mVObjp;
// All of the camera-dependent stuff should be in its own class...
LLPatchVisibilityInfo mVisInfo;
// pointers to beginnings of patch data fields
LLVector3d mOriginGlobal;
LLVector3 mOriginRegion;
// height field stats
LLVector3 mCenterRegion; // Center in region-local coords
F32 mMinZ, mMaxZ, mMeanZ;
F32 mRadius;
F32 mMinComposition;
F32 mMaxComposition;
F32 mMeanComposition;
U8 mConnectedEdge; // This flag is non-zero iff patch is on at least one edge
// of LLSurface that is "connected" to another LLSurface
U64 mLastUpdateTime; // Time patch was last updated
LLSurface *mSurfacep; // Pointer to "parent" surface
};
#endif // LL_LLSURFACEPATCH_H
|
