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
|
//-----------------------------------------------------------------------------
// Product: OpenCTM
// File: compressRAW.c
// Description: Implementation of the RAW compression method.
//-----------------------------------------------------------------------------
// Copyright (c) 2009-2010 Marcus Geelnard
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//-----------------------------------------------------------------------------
#include "openctm.h"
#include "internal.h"
#ifdef __DEBUG_
#include <stdio.h>
#endif
//-----------------------------------------------------------------------------
// _ctmCompressMesh_RAW() - Compress the mesh that is stored in the CTM
// context using the RAW method, and write it the the output stream in the CTM
// context.
//-----------------------------------------------------------------------------
int _ctmCompressMesh_RAW(_CTMcontext * self)
{
CTMuint i;
_CTMfloatmap * map;
#ifdef __DEBUG_
printf("COMPRESSION METHOD: RAW\n");
#endif
// Write triangle indices
#ifdef __DEBUG_
printf("Inidices: %d bytes\n", (CTMuint)(self->mTriangleCount * 3 * sizeof(CTMuint)));
#endif
_ctmStreamWrite(self, (void *) "INDX", 4);
for(i = 0; i < self->mTriangleCount * 3; ++ i)
_ctmStreamWriteUINT(self, self->mIndices[i]);
// Write vertices
#ifdef __DEBUG_
printf("Vertices: %d bytes\n", (CTMuint)(self->mVertexCount * 3 * sizeof(CTMfloat)));
#endif
_ctmStreamWrite(self, (void *) "VERT", 4);
for(i = 0; i < self->mVertexCount * 3; ++ i)
_ctmStreamWriteFLOAT(self, self->mVertices[i]);
// Write normals
if(self->mNormals)
{
#ifdef __DEBUG_
printf("Normals: %d bytes\n", (CTMuint)(self->mVertexCount * 3 * sizeof(CTMfloat)));
#endif
_ctmStreamWrite(self, (void *) "NORM", 4);
for(i = 0; i < self->mVertexCount * 3; ++ i)
_ctmStreamWriteFLOAT(self, self->mNormals[i]);
}
// Write UV maps
map = self->mUVMaps;
while(map)
{
#ifdef __DEBUG_
printf("UV coordinates (%s): %d bytes\n", map->mName ? map->mName : "no name", (CTMuint)(self->mVertexCount * 2 * sizeof(CTMfloat)));
#endif
_ctmStreamWrite(self, (void *) "TEXC", 4);
_ctmStreamWriteSTRING(self, map->mName);
_ctmStreamWriteSTRING(self, map->mFileName);
for(i = 0; i < self->mVertexCount * 2; ++ i)
_ctmStreamWriteFLOAT(self, map->mValues[i]);
map = map->mNext;
}
// Write attribute maps
map = self->mAttribMaps;
while(map)
{
#ifdef __DEBUG_
printf("Vertex attributes (%s): %d bytes\n", map->mName ? map->mName : "no name", (CTMuint)(self->mVertexCount * 4 * sizeof(CTMfloat)));
#endif
_ctmStreamWrite(self, (void *) "ATTR", 4);
_ctmStreamWriteSTRING(self, map->mName);
for(i = 0; i < self->mVertexCount * 4; ++ i)
_ctmStreamWriteFLOAT(self, map->mValues[i]);
map = map->mNext;
}
return 1;
}
//-----------------------------------------------------------------------------
// _ctmUncompressMesh_RAW() - Uncmpress the mesh from the input stream in the
// CTM context using the RAW method, and store the resulting mesh in the CTM
// context.
//-----------------------------------------------------------------------------
int _ctmUncompressMesh_RAW(_CTMcontext * self)
{
CTMuint i;
_CTMfloatmap * map;
// Read triangle indices
if(_ctmStreamReadUINT(self) != FOURCC("INDX"))
{
self->mError = CTM_BAD_FORMAT;
return 0;
}
for(i = 0; i < self->mTriangleCount * 3; ++ i)
self->mIndices[i] = _ctmStreamReadUINT(self);
// Read vertices
if(_ctmStreamReadUINT(self) != FOURCC("VERT"))
{
self->mError = CTM_BAD_FORMAT;
return 0;
}
for(i = 0; i < self->mVertexCount * 3; ++ i)
self->mVertices[i] = _ctmStreamReadFLOAT(self);
// Read normals
if(self->mNormals)
{
if(_ctmStreamReadUINT(self) != FOURCC("NORM"))
{
self->mError = CTM_BAD_FORMAT;
return 0;
}
for(i = 0; i < self->mVertexCount * 3; ++ i)
self->mNormals[i] = _ctmStreamReadFLOAT(self);
}
// Read UV maps
map = self->mUVMaps;
while(map)
{
if(_ctmStreamReadUINT(self) != FOURCC("TEXC"))
{
self->mError = CTM_BAD_FORMAT;
return 0;
}
_ctmStreamReadSTRING(self, &map->mName);
_ctmStreamReadSTRING(self, &map->mFileName);
for(i = 0; i < self->mVertexCount * 2; ++ i)
map->mValues[i] = _ctmStreamReadFLOAT(self);
map = map->mNext;
}
// Read attribute maps
map = self->mAttribMaps;
while(map)
{
if(_ctmStreamReadUINT(self) != FOURCC("ATTR"))
{
self->mError = CTM_BAD_FORMAT;
return 0;
}
_ctmStreamReadSTRING(self, &map->mName);
for(i = 0; i < self->mVertexCount * 4; ++ i)
map->mValues[i] = _ctmStreamReadFLOAT(self);
map = map->mNext;
}
return 1;
}
|
