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/* $Id: imp_dxf_section.c 312 2008-11-17 18:28:56Z mmmaddd $ */
/*
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
*/
#include <string.h>
#include <math.h>
#include <g3d/context.h>
#include "imp_dxf.h"
#include "imp_dxf_prop.h"
#include "imp_dxf_chunks.h"
#include "imp_dxf_entities.h"
static DxfChunkInfo *dxf_get_chunk_info(DxfChunkInfo *chunks, gint32 id)
{
guint32 i;
for(i = 0; chunks[i].id != DXF_CODE_INVALID; i ++)
if(chunks[i].id == id)
return &(chunks[i]);
return NULL;
}
static DxfEntityInfo *dxf_get_entity_info(const gchar *str)
{
guint32 i;
for(i = 0; dxf_entities[i].name != NULL; i ++)
if(strcmp(dxf_entities[i].name, str) == 0)
return &(dxf_entities[i]);
#if DEBUG > 0
g_debug("unknown entity: %s", str);
#endif
return NULL;
}
static gboolean dxf_entity_finalize(DxfGlobalData *global, guint32 sid,
DxfEntityData *edata, DxfEntityInfo *einfo, DxfEntityProps *eprop)
{
DxfLocalData *local;
if(einfo->callback) {
local = g_new0(DxfLocalData, 1);
local->sid = sid;
local->eid = einfo->id;
local->edata = edata;
local->eprop = eprop;
einfo->callback(global, local);
g_free(local);
}
return TRUE;
}
static gboolean dxf_read_chunk(DxfGlobalData *global, DxfChunkInfo *cinfo,
DxfEntityProps *eprop)
{
gint32 i;
gdouble dbl;
gchar str[DXF_MAX_LINE + 1];
switch(cinfo->type) {
case DXF_T_UNKNOWN:
if(cinfo->id == 9) /* variable name */
return dxf_debug_var(global, NULL);
break;
case DXF_T_EMPTY:
return TRUE;
break;
case DXF_T_INT16:
i = dxf_read_int16(global);
dxf_prop_set_int(eprop, cinfo->id, i);
break;
case DXF_T_INT32:
i = dxf_read_int32(global);
dxf_prop_set_int(eprop, cinfo->id, i);
break;
case DXF_T_FLOAT64:
dbl = dxf_read_float64(global);
dxf_prop_set_dbl(eprop, cinfo->id, dbl);
break;
case DXF_T_STRING:
dxf_read_string(global, str);
dxf_prop_set_str(eprop, cinfo->id, str);
break;
}
return TRUE;
}
static gboolean dxf_parse_chunks(DxfGlobalData *global, DxfChunkInfo *chunks,
gint32 parentid, const gchar *section)
{
gint32 key;
DxfChunkInfo *chunk_info;
DxfEntityData *edata;
DxfEntityInfo *einfo = NULL;
DxfEntityProps *eprop = NULL;
gchar str[DXF_MAX_LINE + 1];
G3DFloat pcnt, prev_pcnt = 0.0;
#if DEBUG > 0
g_debug("\\[%s]", section);
#endif
edata = g_new0(DxfEntityData, 1);
if((strcmp(section, "ENTITIES") == 0) ||
(strcmp(section, "BLOCKS") == 0)) {
edata->object = g_slist_nth_data(global->model->objects, 0);
edata->material = g_slist_nth_data(edata->object->materials, 0);
}
while(TRUE) {
key = dxf_read_code(global);
chunk_info = dxf_get_chunk_info(chunks, key);
if(key == DXF_CODE_INVALID) {
g_free(edata);
return FALSE;
}
if(key == 0) { /* new entity or end of section */
if(einfo) {
dxf_entity_finalize(global, parentid, edata, einfo, eprop);
dxf_prop_cleanup(eprop);
eprop = NULL;
}
dxf_read_string(global, str);
DXF_TEST_ENDSEC(str);
einfo = dxf_get_entity_info(str);
eprop = dxf_prop_create();
#if DEBUG > 0
g_debug("| entity: %s", str);
#endif
}
#if DEBUG > 0
if(chunk_info)
g_debug("\\ %s[%+4d]: %s%s%s (line %d)",
key ? " " : "",
key, chunk_info->description,
key ? "" : ": ",
key ? "" : str,
g3d_stream_line(global->stream));
else
g_warning("unknown chunk type %d in line %d", key,
g3d_stream_line(global->stream));
#endif
if(chunk_info) {
dxf_read_chunk(global, chunk_info, eprop);
} /* chunk_info */
else {
DXF_HANDLE_UNKNOWN(global, key, str, section);
}
pcnt = (G3DFloat)g3d_stream_tell(global->stream) /
(G3DFloat)g3d_stream_size(global->stream);
if((pcnt - prev_pcnt) > 0.01) {
prev_pcnt = pcnt;
g3d_context_update_progress_bar(global->context, pcnt, TRUE);
}
g3d_context_update_interface(global->context);
} /* endless loop */
g_free(edata);
return FALSE;
}
gboolean dxf_section_HEADER(DxfGlobalData *global)
{
#if 0
return dxf_parse_chunks(global, dxf_chunks, DXF_ID_HEADER, "HEADER");
#else
return dxf_skip_section(global);
#endif
}
gboolean dxf_section_ENTITIES(DxfGlobalData *global)
{
return dxf_parse_chunks(global, dxf_chunks, DXF_ID_ENTITIES, "ENTITIES");
}
gboolean dxf_section_BLOCKS(DxfGlobalData *global)
{
return dxf_parse_chunks(global, dxf_chunks, DXF_ID_BLOCKS, "BLOCKS");
}
gboolean dxf_section_TABLES(DxfGlobalData *global)
{
#if 0
return dxf_parse_chunks(global, dxf_chunks, DXF_ID_TABLES, "TABLES");
#else
return dxf_skip_section(global);
#endif
}
gboolean dxf_section_OBJECTS(DxfGlobalData *global)
{
#if 0
return dxf_parse_chunks(global, dxf_chunks, DXF_ID_OBJECTS, "OBJECTS");
#else
return dxf_skip_section(global);
#endif
}
gboolean dxf_section_CLASSES(DxfGlobalData *global)
{
#if 0
return dxf_parse_chunks(global, dxf_chunks, DXF_ID_CLASSES, "TABLES");
#else
return dxf_skip_section(global);
#endif
}
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