1 files changed, 233 insertions, 0 deletions

diff --git a/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_dxf/imp_dxf_section.c b/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_dxf/imp_dxf_section.c
new file mode 100644
index 0000000..39cd155
--- /dev/null
+++ b/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_dxf/imp_dxf_section.c
@@ -0,0 +1,233 @@
+/* $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
+}