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uchar vertex[3], lightNormalIndex;
};
struct md2_frame {
float scale[3];
float translate[3];
char name[16];
md2_vertex vertices[1];
};
static float
snap(int sn, float f)
{
return sn ? (float)(((int)(f + sn * 0.5f)) & (~(sn - 1))) : f;
}
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uchar vertex[3], lightNormalIndex;
};
struct md2_frame {
float scale[3];
float translate[3];
char name[16];
struct md2_vertex vertices[1];
};
static float
snap(int sn, float f)
{
return sn ? (float)(((int)(f + sn * 0.5f)) & (~(sn - 1))) : f;
}
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+ (instancetype)md2
{
return [[self alloc] init];
}
- (void)dealloc
{
if (_glCommands)
delete[] _glCommands;
if (_frames)
delete[] _frames;
md2_header header;
[stream readIntoBuffer:&header exactLength:sizeof(md2_header)];
endianswap(&header, sizeof(int), sizeof(md2_header) / sizeof(int));
if (header.magic != 844121161 || header.version != 8)
return false;
_frames = new char[header.frameSize * header.numFrames];
if (_frames == NULL)
return false;
[stream seekToOffset:header.offsetFrames whence:OFSeekSet];
[stream readIntoBuffer:_frames
exactLength:header.frameSize * header.numFrames];
for (int i = 0; i < header.numFrames; ++i)
endianswap(_frames + i * header.frameSize, sizeof(float), 6);
_glCommands = new int[header.numGlCommands];
if (_glCommands == NULL)
return false;
[stream seekToOffset:header.offsetGlCommands whence:OFSeekSet];
[stream readIntoBuffer:_glCommands
exactLength:header.numGlCommands * sizeof(int)];
endianswap(_glCommands, sizeof(int), header.numGlCommands);
_numFrames = header.numFrames;
_numGlCommands = header.numGlCommands;
_frameSize = header.frameSize;
_numTriangles = header.numTriangles;
_numVerts = header.numVertices;
[stream close];
_mverts = new OFVector3D *[_numFrames];
loopj(_numFrames) _mverts[j] = NULL;
_mverts[frame] = new OFVector3D[_numVerts];
md2_frame *cf = (md2_frame *)((char *)_frames + _frameSize * frame);
float sc = 16.0f / scale;
loop(vi, _numVerts)
{
uchar *cv = (uchar *)&cf->vertices[vi].vertex;
OFVector3D *v = &(_mverts[frame])[vi];
v->x = (snap(sn, cv[0] * cf->scale[0]) + cf->translate[0]) / sc;
v->y =
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+ (instancetype)md2
{
return [[self alloc] init];
}
- (void)dealloc
{
OFFreeMemory(_glCommands);
OFFreeMemory(_frames);
if (_mverts != NULL)
for (size_t i = 0; i < _numFrames; i++)
OFFreeMemory(_mverts[i]);
OFFreeMemory(_mverts);
}
- (bool)loadWithIRI:(OFIRI *)IRI
{
OFSeekableStream *stream;
@try {
stream = (OFSeekableStream *)[[OFIRIHandler handlerForIRI:IRI]
openItemAtIRI:IRI
mode:@"r"];
} @catch (id e) {
return false;
}
if (![stream isKindOfClass:OFSeekableStream.class])
return false;
struct md2_header header;
[stream readIntoBuffer:&header exactLength:sizeof(header)];
endianswap(&header, sizeof(int), sizeof(header) / sizeof(int));
if (header.magic != 844121161 || header.version != 8)
return false;
@try {
_frames = OFAllocMemory(header.numFrames, header.frameSize);
} @catch (OFOutOfMemoryException *e) {
return false;
}
[stream seekToOffset:header.offsetFrames whence:OFSeekSet];
[stream readIntoBuffer:_frames
exactLength:header.frameSize * header.numFrames];
for (int i = 0; i < header.numFrames; ++i)
endianswap(_frames + i * header.frameSize, sizeof(float), 6);
@try {
_glCommands = OFAllocMemory(header.numGlCommands, sizeof(int));
} @catch (OFOutOfMemoryException *e) {
return false;
}
[stream seekToOffset:header.offsetGlCommands whence:OFSeekSet];
[stream readIntoBuffer:_glCommands
exactLength:header.numGlCommands * sizeof(int)];
endianswap(_glCommands, sizeof(int), header.numGlCommands);
_numFrames = header.numFrames;
_numGlCommands = header.numGlCommands;
_frameSize = header.frameSize;
_numTriangles = header.numTriangles;
_numVerts = header.numVertices;
[stream close];
_mverts = OFAllocZeroedMemory(_numFrames, sizeof(OFVector3D *));
return true;
}
- (void)scaleWithFrame:(int)frame scale:(float)scale snap:(int)sn
{
OFAssert(_mverts[frame] == NULL);
_mverts[frame] = OFAllocMemory(_numVerts, sizeof(OFVector3D));
struct md2_frame *cf =
(struct md2_frame *)((char *)_frames + _frameSize * frame);
float sc = 16.0f / scale;
loop(vi, _numVerts)
{
uchar *cv = (uchar *)&cf->vertices[vi].vertex;
OFVector3D *v = &(_mverts[frame])[vi];
v->x = (snap(sn, cv[0] * cf->scale[0]) + cf->translate[0]) / sc;
v->y =
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loopi(numVertex)
{
float tu = *((float *)command++);
float tv = *((float *)command++);
glTexCoord2f(tu, tv);
int vn = *command++;
OFVector3D &v1 = verts1[vn];
OFVector3D &v2 = verts2[vn];
#define ip(c) v1.c *frac2 + v2.c *frac1
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loopi(numVertex)
{
float tu = *((float *)command++);
float tv = *((float *)command++);
glTexCoord2f(tu, tv);
int vn = *command++;
#define ip(c) verts1[vn].c *frac2 + verts2[vn].c *frac1
glVertex3f(ip(x), ip(z), ip(y));
}
xtraverts += numVertex;
glEnd();
}
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