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
|
/**
* @file llviewertextureanim.cpp
* @brief LLViewerTextureAnim class implementation
*
* $LicenseInfo:firstyear=2003&license=viewergpl$
*
* Copyright (c) 2003-2009, 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.
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llviewertextureanim.h"
#include "llmath.h"
#include "llerror.h"
LLViewerTextureAnim::LLViewerTextureAnim() : LLTextureAnim()
{
mLastFrame = -1.f; // Force an update initially
mLastTime = 0.f;
mOffS = mOffT = 0;
mScaleS = mScaleT = 1;
mRot = 0;
}
LLViewerTextureAnim::~LLViewerTextureAnim()
{
}
void LLViewerTextureAnim::reset()
{
LLTextureAnim::reset();
mTimer.reset();
}
S32 LLViewerTextureAnim::animateTextures(F32 &off_s, F32 &off_t,
F32 &scale_s, F32 &scale_t,
F32 &rot)
{
S32 result = 0;
if (!(mMode & ON))
{
mLastTime = 0.f;
mLastFrame = -1.f;
return result;
}
F32 num_frames = 1.0;
F32 full_length = 1.0;
if (mLength)
{
num_frames = mLength;
}
else
{
num_frames = llmax(1.f, (F32)(mSizeX * mSizeY));
}
if (mMode & PING_PONG)
{
if (mMode & SMOOTH)
{
full_length = 2.f*num_frames;
}
else if (mMode & LOOP)
{
full_length = 2.f*num_frames - 2.f;
full_length = llmax(1.f, full_length);
}
else
{
full_length = 2.f*num_frames - 1.f;
full_length = llmax(1.f, full_length);
}
}
else
{
full_length = num_frames;
}
F32 frame_counter;
if (mMode & SMOOTH)
{
frame_counter = mTimer.getElapsedTimeAndResetF32() * mRate + (F32)mLastTime;
}
else
{
frame_counter = mTimer.getElapsedTimeF32() * mRate;
}
mLastTime = frame_counter;
if (mMode & LOOP)
{
frame_counter = fmod(frame_counter, full_length);
}
else
{
frame_counter = llmin(full_length - 1.f, frame_counter);
}
if (!(mMode & SMOOTH))
{
frame_counter = (F32)llfloor(frame_counter + 0.01f);
}
if (mMode & PING_PONG)
{
if (frame_counter >= num_frames)
{
if (mMode & SMOOTH)
{
frame_counter = num_frames - (frame_counter - num_frames);
}
else
{
frame_counter = (num_frames - 1.99f) - (frame_counter - num_frames);
}
}
}
if (mMode & REVERSE)
{
if (mMode & SMOOTH)
{
frame_counter = num_frames - frame_counter;
}
else
{
frame_counter = (num_frames - 0.99f) - frame_counter;
}
}
frame_counter += mStart;
if (!(mMode & SMOOTH))
{
frame_counter = (F32)llround(frame_counter);
}
//
// Now that we've calculated the frame time, do an update.
// Will we correctly update stuff if the texture anim has
// changed, but not the frame counter?
//
if (mLastFrame != frame_counter)
{
mLastFrame = frame_counter;
if (mMode & ROTATE)
{
result |= ROTATE;
mRot = rot = frame_counter;
}
else if (mMode & SCALE)
{
result |= SCALE;
mScaleS = scale_s = frame_counter;
mScaleT = scale_t = frame_counter;
}
else
{
result |= TRANSLATE;
F32 x_frame;
S32 y_frame;
F32 x_pos;
F32 y_pos;
if ( (mSizeX)
&&(mSizeY))
{
result |= SCALE;
mScaleS = scale_s = 1.f/mSizeX;
mScaleT = scale_t = 1.f/mSizeY;
x_frame = fmod(frame_counter, mSizeX);
y_frame = (S32)(frame_counter / mSizeX);
x_pos = x_frame * scale_s;
y_pos = y_frame * scale_t;
mOffS = off_s = (-0.5f + 0.5f*scale_s)+ x_pos;
mOffT = off_t = (0.5f - 0.5f*scale_t) - y_pos;
}
else
{
mScaleS = scale_s = 1.f;
mScaleT = scale_t = 1.f;
x_pos = frame_counter * scale_s;
mOffS = off_s = (-0.5f + 0.5f*scale_s)+ x_pos;
mOffT = off_t = 0.f;
}
}
}
return result;
}
|
