1 files changed, 115 insertions, 0 deletions

diff --git a/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_heightfield/imp_heightfield.c b/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_heightfield/imp_heightfield.c
new file mode 100644
index 0000000..a8251a1
--- /dev/null
+++ b/src/others/mimesh/libg3d-0.0.8/plugins/import/imp_heightfield/imp_heightfield.c
@@ -0,0 +1,115 @@
+/* $Id$ */
+
+/*
+    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
+*/
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <g3d/types.h>
+#include <g3d/context.h>
+#include <g3d/plugins.h>
+#include <g3d/material.h>
+#include <g3d/primitive.h>
+
+EAPI
+gboolean plugin_load_model_from_stream(G3DContext *context, G3DStream *stream,
+        G3DModel *model, gpointer user_data)
+{
+        G3DImage *image = g_new0(G3DImage, 1);
+        G3DObject *object;
+        G3DMaterial *material;
+        guint32 x, y, index;
+        G3DFloat pcnt, prev_pcnt = 0.0;
+
+        if(!g3d_plugins_load_image_from_stream(context, stream, image)) {
+                g_free(image);
+                return FALSE;
+        }
+
+        material = g3d_material_new();
+        material->name = g_strdup("default material");
+        material->r = 0.4;
+        material->g = 0.4;
+        material->b = 0.4;
+        material->a = 1.0;
+        model->materials = g_slist_append(model->materials, material);
+
+        object = g3d_primitive_mesh(image->width, image->height, FALSE, FALSE,
+                material);
+        object->name = g_strdup("height field");
+        model->objects = g_slist_append(model->objects, object);
+
+#if DEBUG > 0
+        g_debug("height field loader: image: %dx%dx%d",
+                image->width, image->height, image->depth);
+#endif
+
+        for(y = 0; y < image->height; y ++) {
+                for(x = 0; x < image->width; x ++) {
+                        index = y * image->width + x;
+
+                        object->vertex_data[index * 3 + 0] = x;
+                        object->vertex_data[index * 3 + 1] = y;
+                        switch(image->depth) {
+                                case 8:
+                                        object->vertex_data[index * 3 + 2] = 0.0 +
+                                                (G3DFloat)image->pixeldata[index] / 32.0;
+                                        break;
+                                case 15:
+                                case 16:
+                                        object->vertex_data[index*3+2] = 0.0 +
+                                                *((guint16*)&image->pixeldata[index]);
+                                        break;
+                                case 24:
+                                case 32:
+                                        object->vertex_data[index * 3 + 2] = 0.0 +
+                                                image->pixeldata[index * 4] / 32.0;
+                                        break;
+                                default:
+                                        break;
+                        }
+
+                        pcnt = (G3DFloat)(y * image->width + x) /
+                                (G3DFloat)(image->width * image->height);
+                        if((pcnt - prev_pcnt) > 0.01) {
+                                prev_pcnt = pcnt;
+                                g3d_context_update_progress_bar(context, pcnt, TRUE);
+                        }
+                        g3d_context_update_interface(context);
+                } /* for(x) */
+        } /* for(y) */
+
+        return TRUE;
+}
+
+EAPI
+gchar *plugin_description(G3DContext *context)
+{
+        return g_strdup("Generate height fields from images.\n"
+                "Author: Markus Dahms");
+}
+
+EAPI
+gchar **plugin_extensions(G3DContext *context)
+{
+        return g3d_plugins_get_image_extensions(context);
+}
+