1 files changed, 216 insertions, 0 deletions

diff --git a/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_lwo/imp_lwo.c b/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_lwo/imp_lwo.c
new file mode 100644
index 0000000..d01b817
--- /dev/null
+++ b/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_lwo/imp_lwo.c
@@ -0,0 +1,216 @@
+/* $Id$ */
+
+/*
+    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
+*/
+
+/*
+ *  imp_lwo.c - LightWave import plugin
+ *
+ *  (C) 2005,2006 Markus Dahms
+ *
+ *  based on gtkglarea example viewlw:
+ *  Copyright (C) 1998 Janne Löf <jlof@mail.student.oulu.fi>
+ */
+
+#include <string.h>
+
+#include <g3d/types.h>
+#include <g3d/context.h>
+#include <g3d/stream.h>
+#include <g3d/material.h>
+#include <g3d/iff.h>
+
+#define LW_MAX_POINTS   200
+#define LW_MAX_NAME_LEN 500
+#define LW_F_LWO2 1
+
+#include "imp_lwo.h"
+#include "imp_lwo_chunks.h"
+
+/*****************************************************************************/
+/* plugin interface                                                          */
+/*****************************************************************************/
+
+static void lwo_fix_texfaces(G3DModel *model);
+
+EAPI
+gboolean plugin_load_model_from_stream(G3DContext *context, G3DStream *stream,
+        G3DModel *model, gpointer user_data)
+{
+        LwoObject *obj;
+        G3DMaterial *material;
+        guint32 id;
+        gsize len;
+        G3DIffGlobal *global;
+        G3DIffLocal *local;
+
+        if(!g3d_iff_check(stream, &id, &len))
+                return FALSE;
+
+        if((id != G3D_IFF_MKID('L','W','O','B')) &&
+                (id != G3D_IFF_MKID('L','W','O','2'))) {
+                g_warning("'%s' is not a LightWave object", stream->uri);
+                return FALSE;
+        }
+
+        obj = g_new0(LwoObject, 1);
+
+        global = g_new0(G3DIffGlobal, 1);
+        global->stream = stream;
+        global->context = context;
+        global->model = model;
+        if(id == G3D_IFF_MKID('L','W','O','2'))
+                global->flags |= LWO_FLAG_LWO2;
+        global->user_data = obj;
+
+        local = g_new0(G3DIffLocal, 1);
+        local->id = id;
+        local->nb = len;
+
+        material = g3d_material_new();
+        material->name = g_strdup("fallback material");
+        model->materials = g_slist_append(model->materials, material);
+
+        g3d_iff_read_ctnr(global, local, lwo_chunks,
+                G3D_IFF_PAD2 | G3D_IFF_SUBCHUNK_LEN16);
+
+        lwo_fix_texfaces(model);
+
+        /* cleanup */
+        if(obj->ntags)
+                g_strfreev(obj->tags);
+
+        if(obj->nclips)
+        {
+                g_free(obj->clips);
+                g_strfreev(obj->clipfiles);
+        }
+
+        if(obj->tex_vertices)
+                g_free(obj->tex_vertices);
+
+        g_free(obj);
+
+        g_free(local);
+        g_free(global);
+
+        g3d_context_update_progress_bar(context, 0.0, FALSE);
+
+        return TRUE;
+}
+
+EAPI
+gchar *plugin_description(G3DContext *context)
+{
+        return g_strdup("LightWave models.\n"
+                "Author: Markus Dahms.");
+}
+
+EAPI
+gchar **plugin_extensions(G3DContext *context)
+{
+        return g_strsplit("lwo:lwb:lw", ":", 0);
+}
+
+/*****************************************************************************/
+/* private                                                                   */
+/*****************************************************************************/
+
+G3DObject *lwo_create_object(G3DStream *stream, G3DModel *model, guint32 flags)
+{
+        G3DObject *object = g_new0(G3DObject, 1);
+        object->name = g_strdup_printf("LWO%c object @ 0x%08x",
+                (flags & LW_F_LWO2) ? '2' : 'B', (guint32)g3d_stream_tell(stream) - 8);
+        model->objects = g_slist_append(model->objects, object);
+
+#if 0
+        /* LWO files should have correct faces */
+        model->glflags &= ~G3D_FLAG_GL_ALLTWOSIDE;
+#endif
+
+        return object;
+}
+
+/*****************************************************************************/
+/* LWO specific                                                              */
+/*****************************************************************************/
+
+gint lwo_read_string(G3DStream *stream, char *s)
+{
+        gint c;
+        gint cnt = 0;
+        do {
+                c = g3d_stream_read_int8(stream);
+                if (cnt < LW_MAX_NAME_LEN)
+                  s[cnt] = c;
+                else
+                  s[LW_MAX_NAME_LEN-1] = 0;
+                cnt++;
+        } while (c != 0);
+        /* if length of string (including \0) is odd skip another byte */
+        if (cnt%2) {
+                g3d_stream_read_int8(stream);
+                cnt++;
+        }
+        return cnt;
+}
+
+guint32 lwo_read_vx(G3DStream *stream, guint *index)
+{
+        *index = g3d_stream_read_int16_be(stream);
+        if((*index & 0xFF00) == 0xFF00) {
+                *index <<= 16;
+                *index += g3d_stream_read_int16_be(stream);
+                *index &= 0x00FFFFFF;
+                return 4;
+        } else {
+                return 2;
+        }
+}
+
+static void lwo_fix_texfaces(G3DModel *model)
+{
+        GSList *olist, *flist;
+        G3DObject *object;
+        G3DFace *face;
+
+        olist = model->objects;
+        while(olist)
+        {
+                object = (G3DObject *)olist->data;
+                olist = olist->next;
+
+                flist = object->faces;
+                while(flist)
+                {
+                        face = (G3DFace *)flist->data;
+                        flist = flist->next;
+
+                        if(face->flags & G3D_FLAG_FAC_TEXMAP)
+                        {
+                                face->tex_image = face->material->tex_image;
+                                if(face->tex_image == NULL)
+                                {
+                                        face->flags &= ~G3D_FLAG_FAC_TEXMAP;
+                                }
+                        }
+                }
+        }
+}