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/* $Id:$ */
/*
libg3d - 3D object loading library
Copyright (C) 2005-2009 Markus Dahms <mad@automagically.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <g3d/types.h>
#include <g3d/stream.h>
#include "imp_3dm_types.h"
static guint32 tdm_object_read_vector_data(G3DStream *stream,
G3DVector *vertex_data, guint32 vsize, guint32 vcount)
{
gsize nb = 0;
gint32 i, j;
for(i = 0; i < vcount; i ++)
for(j = 0; j < vsize; j ++) {
vertex_data[i * vsize + j] = g3d_stream_read_float_le(stream);
nb += 4;
}
return nb;
}
gboolean tdm_object_read_vertex_data_uncompressed(TdmGlobal *global,
TdmLocal *local)
{
TdmObjectRecord *obj = local->object;
local->len -= tdm_object_read_vector_data(global->stream,
obj->object->vertex_data, 3, obj->object->vertex_count);
return TRUE;
}
gboolean tdm_object_read_vertex_data_compressed(TdmGlobal *global,
TdmLocal *local)
{
#if HAVE_ZLIB
TdmObjectRecord *obj = local->object;
G3DStream *zstream;
guint32 csize;
g3d_stream_read_int32_le(global->stream); /* tcode */
csize = g3d_stream_read_int32_le(global->stream) - 4; /* size */
local->len -= 8;
zstream = g3d_stream_zlib_inflate_stream(global->stream, csize);
if(zstream) {
tdm_object_read_vector_data(zstream,
obj->object->vertex_data, 3, obj->object->vertex_count);
local->len -= csize;
g3d_stream_close(zstream);
/* CRC */
g3d_stream_read_int32_le(global->stream);
local->len -= 4;
return TRUE;
};
#else
g_warning("no zlib support, unable to read deflated data");
#endif /* HAVE_ZLIB */
return FALSE;
}
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