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
|
/**
* @file v3math.cpp
* @brief LLVector3 class implementation.
*
* Copyright (c) 2000-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "linden_common.h"
#include "v3math.h"
//#include "vmath.h"
#include "v4math.h"
#include "m4math.h"
#include "m3math.h"
#include "llquaternion.h"
#include "llquantize.h"
#include "v3dmath.h"
// LLVector3
// WARNING: Don't use these for global const definitions!
// For example:
// const LLQuaternion(0.5f * F_PI, LLVector3::zero);
// at the top of a *.cpp file might not give you what you think.
const LLVector3 LLVector3::zero(0,0,0);
const LLVector3 LLVector3::x_axis(1.f, 0, 0);
const LLVector3 LLVector3::y_axis(0, 1.f, 0);
const LLVector3 LLVector3::z_axis(0, 0, 1.f);
const LLVector3 LLVector3::x_axis_neg(-1.f, 0, 0);
const LLVector3 LLVector3::y_axis_neg(0, -1.f, 0);
const LLVector3 LLVector3::z_axis_neg(0, 0, -1.f);
const LLVector3 LLVector3::all_one(1.f,1.f,1.f);
// Clamps each values to range (min,max).
// Returns TRUE if data changed.
BOOL LLVector3::clamp(F32 min, F32 max)
{
BOOL ret = FALSE;
if (mV[0] < min) { mV[0] = min; ret = TRUE; }
if (mV[1] < min) { mV[1] = min; ret = TRUE; }
if (mV[2] < min) { mV[2] = min; ret = TRUE; }
if (mV[0] > max) { mV[0] = max; ret = TRUE; }
if (mV[1] > max) { mV[1] = max; ret = TRUE; }
if (mV[2] > max) { mV[2] = max; ret = TRUE; }
return ret;
}
// Sets all values to absolute value of their original values
// Returns TRUE if data changed
BOOL LLVector3::abs()
{
BOOL ret = FALSE;
if (mV[0] < 0.f) { mV[0] = -mV[0]; ret = TRUE; }
if (mV[1] < 0.f) { mV[1] = -mV[1]; ret = TRUE; }
if (mV[2] < 0.f) { mV[2] = -mV[2]; ret = TRUE; }
return ret;
}
// Quatizations
void LLVector3::quantize16(F32 lowerxy, F32 upperxy, F32 lowerz, F32 upperz)
{
F32 x = mV[VX];
F32 y = mV[VY];
F32 z = mV[VZ];
x = U16_to_F32(F32_to_U16(x, lowerxy, upperxy), lowerxy, upperxy);
y = U16_to_F32(F32_to_U16(y, lowerxy, upperxy), lowerxy, upperxy);
z = U16_to_F32(F32_to_U16(z, lowerz, upperz), lowerz, upperz);
mV[VX] = x;
mV[VY] = y;
mV[VZ] = z;
}
void LLVector3::quantize8(F32 lowerxy, F32 upperxy, F32 lowerz, F32 upperz)
{
mV[VX] = U8_to_F32(F32_to_U8(mV[VX], lowerxy, upperxy), lowerxy, upperxy);;
mV[VY] = U8_to_F32(F32_to_U8(mV[VY], lowerxy, upperxy), lowerxy, upperxy);
mV[VZ] = U8_to_F32(F32_to_U8(mV[VZ], lowerz, upperz), lowerz, upperz);
}
void LLVector3::snap(S32 sig_digits)
{
mV[VX] = snap_to_sig_figs(mV[VX], sig_digits);
mV[VY] = snap_to_sig_figs(mV[VY], sig_digits);
mV[VZ] = snap_to_sig_figs(mV[VZ], sig_digits);
}
std::ostream& operator<<(std::ostream& s, const LLVector3 &a)
{
s << "{ " << a.mV[VX] << ", " << a.mV[VY] << ", " << a.mV[VZ] << " }";
return s;
}
const LLVector3& LLVector3::rotVec(const LLMatrix3 &mat)
{
*this = *this * mat;
return *this;
}
const LLVector3& LLVector3::rotVec(const LLQuaternion &q)
{
*this = *this * q;
return *this;
}
const LLVector3& LLVector3::rotVec(F32 angle, const LLVector3 &vec)
{
if ( !vec.isExactlyZero() && angle )
{
*this = *this * LLMatrix3(angle, vec);
}
return *this;
}
const LLVector3& LLVector3::rotVec(F32 angle, F32 x, F32 y, F32 z)
{
LLVector3 vec(x, y, z);
if ( !vec.isExactlyZero() && angle )
{
*this = *this * LLMatrix3(angle, vec);
}
return *this;
}
const LLVector3& LLVector3::scaleVec(const LLVector3& vec)
{
mV[VX] *= vec.mV[VX];
mV[VY] *= vec.mV[VY];
mV[VZ] *= vec.mV[VZ];
return *this;
}
LLVector3 LLVector3::scaledVec(const LLVector3& vec) const
{
LLVector3 ret = LLVector3(*this);
ret.scaleVec(vec);
return ret;
}
const LLVector3& LLVector3::setVec(const LLVector3d &vec)
{
mV[0] = (F32)vec.mdV[0];
mV[1] = (F32)vec.mdV[1];
mV[2] = (F32)vec.mdV[2];
return (*this);
}
const LLVector3& LLVector3::setVec(const LLVector4 &vec)
{
mV[0] = vec.mV[0];
mV[1] = vec.mV[1];
mV[2] = vec.mV[2];
return (*this);
}
LLVector3::LLVector3(const LLVector3d &vec)
{
mV[VX] = (F32)vec.mdV[VX];
mV[VY] = (F32)vec.mdV[VY];
mV[VZ] = (F32)vec.mdV[VZ];
}
LLVector3::LLVector3(const LLVector4 &vec)
{
mV[VX] = (F32)vec.mV[VX];
mV[VY] = (F32)vec.mV[VY];
mV[VZ] = (F32)vec.mV[VZ];
}
const LLVector3& operator*=(LLVector3 &a, const LLQuaternion &rot)
{
const F32 rw = - rot.mQ[VX] * a.mV[VX] - rot.mQ[VY] * a.mV[VY] - rot.mQ[VZ] * a.mV[VZ];
const F32 rx = rot.mQ[VW] * a.mV[VX] + rot.mQ[VY] * a.mV[VZ] - rot.mQ[VZ] * a.mV[VY];
const F32 ry = rot.mQ[VW] * a.mV[VY] + rot.mQ[VZ] * a.mV[VX] - rot.mQ[VX] * a.mV[VZ];
const F32 rz = rot.mQ[VW] * a.mV[VZ] + rot.mQ[VX] * a.mV[VY] - rot.mQ[VY] * a.mV[VX];
a.mV[VX] = - rw * rot.mQ[VX] + rx * rot.mQ[VW] - ry * rot.mQ[VZ] + rz * rot.mQ[VY];
a.mV[VY] = - rw * rot.mQ[VY] + ry * rot.mQ[VW] - rz * rot.mQ[VX] + rx * rot.mQ[VZ];
a.mV[VZ] = - rw * rot.mQ[VZ] + rz * rot.mQ[VW] - rx * rot.mQ[VY] + ry * rot.mQ[VX];
return a;
}
// static
BOOL LLVector3::parseVector3(const char* buf, LLVector3* value)
{
if( buf == NULL || buf[0] == '\0' || value == NULL)
{
return FALSE;
}
LLVector3 v;
S32 count = sscanf( buf, "%f %f %f", v.mV + 0, v.mV + 1, v.mV + 2 );
if( 3 == count )
{
value->setVec( v );
return TRUE;
}
return FALSE;
}
|
