Collada: fixed export when 'active UV Layer only' was selected
[blender.git] / source / blender / collada / ImageExporter.cpp
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * Contributor(s): Chingiz Dyussenov, Arystanbek Dyussenov, Jan Diederich, Tod Liverseed,
19  *                 Nathan Letwory
20  *
21  * ***** END GPL LICENSE BLOCK *****
22  */
23
24 /** \file blender/collada/ImageExporter.cpp
25  *  \ingroup collada
26  */
27
28
29 #include "COLLADABUURI.h"
30 #include "COLLADASWImage.h"
31
32 extern "C" {
33 #include "DNA_texture_types.h"
34 #include "DNA_image_types.h"
35 #include "DNA_meshdata_types.h"
36
37 #include "BKE_customdata.h" 
38 #include "BKE_global.h"
39 #include "BKE_image.h"
40 #include "BKE_main.h"
41 #include "BKE_mesh.h"
42 #include "BKE_utildefines.h"
43 #include "BLI_fileops.h"
44 #include "BLI_path_util.h"
45 #include "BLI_string.h"
46 #include "IMB_imbuf_types.h"
47 }
48
49 #include "ImageExporter.h"
50 #include "MaterialExporter.h"
51
52
53 ImagesExporter::ImagesExporter(COLLADASW::StreamWriter *sw, const ExportSettings *export_settings) : COLLADASW::LibraryImages(sw), export_settings(export_settings)
54 {
55 }
56
57 void ImagesExporter::export_UV_Image(Image *image, bool use_copies) 
58 {
59         std::string name(id_name(image));
60         std::string translated_name(translate_id(name));
61         bool not_yet_exported = find(mImages.begin(), mImages.end(), translated_name) == mImages.end();
62
63         if (not_yet_exported) {
64
65                 ImBuf *imbuf       = BKE_image_get_ibuf(image, NULL);
66                 if(!imbuf) {
67                         fprintf(stderr, "Collada export: image does not exist:\n%s\n", image->name);
68                         return;
69                 }
70
71                 bool  is_dirty     = imbuf->userflags & IB_BITMAPDIRTY;
72
73                 ImageFormatData imageFormat;
74                 BKE_imbuf_to_image_format(&imageFormat, imbuf);
75
76                 short image_source = image->source;
77                 bool  is_generated = image_source == IMA_SRC_GENERATED;
78
79                 char export_path[FILE_MAX];
80                 char source_path[FILE_MAX];
81                 char export_dir[FILE_MAX];
82                 char export_file[FILE_MAX];
83
84                 // Destination folder for exported assets
85                 BLI_split_dir_part(this->export_settings->filepath, export_dir, sizeof(export_dir));
86
87                 if (is_generated || is_dirty || use_copies) {
88
89                         // make absolute destination path
90
91                         BLI_strncpy(export_file, name.c_str(), sizeof(export_file));
92                         BKE_add_image_extension(export_file, imageFormat.imtype);
93
94                         BLI_join_dirfile(export_path, sizeof(export_path), export_dir, export_file);
95
96                         // make dest directory if it doesn't exist
97                         BLI_make_existing_file(export_path);
98                 }
99
100                 if (is_generated || is_dirty) {
101
102                         // This image in its current state only exists in Blender memory.
103                         // So we have to export it. The export will keep the image state intact,
104                         // so the exported file will not be associated with the image.
105
106                         if (BKE_imbuf_write_as(imbuf, export_path, &imageFormat, true) == 0) {
107                                 fprintf(stderr, "Collada export: Cannot export image to:\n%s\n", export_path);
108                                 return;
109                         }
110                         BLI_strncpy(export_path, export_file, sizeof(export_path));
111                 }
112                 else {
113
114                         // make absolute source path
115                         BLI_strncpy(source_path, image->name, sizeof(source_path));
116                         BLI_path_abs(source_path, G.main->name);
117                         BLI_cleanup_path(NULL, source_path);
118
119                         if (use_copies) {
120                         
121                                 // This image is already located on the file system.
122                                 // But we want to create copies here.
123                                 // To avoid overwroting images with same file name but
124                                 // differenet source locations
125
126                                 if (BLI_copy(source_path, export_path) != 0) {
127                                         fprintf(stderr, "Collada export: Cannot copy image:\n source:%s\ndest :%s\n", source_path, export_path);
128                                         return;
129                                 }
130
131                                 BLI_strncpy(export_path, export_file, sizeof(export_path));
132
133                         }
134                         else {
135
136                                 // Do not make any vopies, but use the source path directly as reference
137                                 // to the original image
138
139                                 BLI_strncpy(export_path, source_path, sizeof(export_path));
140                         }
141                 }
142
143                 COLLADASW::Image img(COLLADABU::URI(COLLADABU::URI::nativePathToUri(export_path)), translated_name, translated_name); /* set name also to mNameNC. This helps other viewers import files exported from Blender better */
144                 img.add(mSW);
145                 fprintf(stdout, "Collada export: Added image: %s\n", export_file);
146                 mImages.push_back(translated_name);
147         }
148 }
149
150 void ImagesExporter::export_UV_Images()
151 {
152         std::set<Image *> uv_textures;
153         LinkNode *node;
154         bool use_texture_copies = this->export_settings->use_texture_copies;
155         bool active_uv_only     = this->export_settings->active_uv_only;
156
157         for (node = this->export_settings->export_set; node; node = node->next) {
158                 Object *ob = (Object *)node->link;
159                 if (ob->type == OB_MESH && ob->totcol) {
160                         Mesh *me     = (Mesh *) ob->data;
161                         BKE_mesh_tessface_ensure(me);
162                         int active_uv_layer = CustomData_get_active_layer_index(&me->pdata, CD_MTEXPOLY);
163                         for (int i = 0; i < me->pdata.totlayer; i++) {
164                                 if (me->pdata.layers[i].type == CD_MTEXPOLY) {
165                                         if (!active_uv_only || active_uv_layer == i)
166                                         {
167                                                 MTexPoly *txface = (MTexPoly *)me->pdata.layers[i].data;
168                                                 for (int j = 0; j < me->totpoly; j++, txface++) {
169
170                                                         Image *ima = txface->tpage;
171                                                         if (ima == NULL)
172                                                                 continue;
173
174                                                         bool not_in_list = uv_textures.find(ima) == uv_textures.end();
175                                                         if (not_in_list) {
176                                                                         uv_textures.insert(ima);
177                                                                         export_UV_Image(ima, use_texture_copies);
178                                                         }
179                                                 }
180                                         }
181                                 }
182                         }
183                 }
184         }
185 }
186
187
188 bool ImagesExporter::hasImages(Scene *sce)
189 {
190         LinkNode *node;
191         
192         for (node = this->export_settings->export_set; node; node = node->next) {
193                 Object *ob = (Object *)node->link;
194                 int a;
195                 for (a = 0; a < ob->totcol; a++) {
196                         Material *ma = give_current_material(ob, a + 1);
197
198                         // no material, but check all of the slots
199                         if (!ma) continue;
200                         int b;
201                         for (b = 0; b < MAX_MTEX; b++) {
202                                 MTex *mtex = ma->mtex[b];
203                                 if (mtex && mtex->tex && mtex->tex->ima) return true;
204                         }
205
206                 }
207                 if (ob->type == OB_MESH) {
208                         Mesh *me     = (Mesh *) ob->data;
209                         BKE_mesh_tessface_ensure(me);
210                         bool has_uvs = (bool)CustomData_has_layer(&me->fdata, CD_MTFACE);
211                         if (has_uvs) {
212                                 int num_layers = CustomData_number_of_layers(&me->fdata, CD_MTFACE);
213                                 for (int a = 0; a < num_layers; a++) {
214                                         MTFace *tface = (MTFace *)CustomData_get_layer_n(&me->fdata, CD_MTFACE, a);
215                                         Image *img = tface->tpage;
216                                         if (img) return true;
217                                 }
218                         }
219                 }
220
221         }
222         return false;
223 }
224
225 void ImagesExporter::exportImages(Scene *sce)
226 {
227         openLibrary();
228
229         MaterialFunctor mf;
230         if (this->export_settings->include_material_textures) {
231                 mf.forEachMaterialInExportSet<ImagesExporter>(sce, *this, this->export_settings->export_set);
232         }
233
234         if (this->export_settings->include_uv_textures) {
235                 export_UV_Images();
236         }
237
238         closeLibrary();
239 }
240
241
242
243 void ImagesExporter::operator()(Material *ma, Object *ob)
244 {
245         int a;
246         bool use_texture_copies = this->export_settings->use_texture_copies;
247         for (a = 0; a < MAX_MTEX; a++) {
248                 MTex *mtex = ma->mtex[a];
249                 if (mtex && mtex->tex && mtex->tex->ima) {
250                         Image *image = mtex->tex->ima;
251                         export_UV_Image(image, use_texture_copies);
252                 }
253         }
254 }