ImageExporter.cpp

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s): Chingiz Dyussenov, Arystanbek Dyussenov, Jan Diederich, Tod Liverseed,
 *                 Nathan Letwory
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "COLLADABUURI.h"
#include "COLLADASWImage.h"

#include "ImageExporter.h"
#include "MaterialExporter.h"

#include "DNA_texture_types.h"

#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_utildefines.h"
#include "BLI_fileops.h"
#include "BLI_path_util.h"
#include "BLI_string.h"

ImagesExporter::ImagesExporter(COLLADASW::StreamWriter *sw, const ExportSettings *export_settings) : COLLADASW::LibraryImages(sw), export_settings(export_settings)
{}

bool ImagesExporter::hasImages(Scene *sce)
{
    Base *base = (Base *)sce->base.first;
    
    while(base) {
        Object *ob= base->object;
        int a;
        for(a = 0; a < ob->totcol; a++)
        {
            Material *ma = give_current_material(ob, a+1);

            // no material, but check all of the slots
            if (!ma) continue;
            int b;
            for (b = 0; b < MAX_MTEX; b++) {
                MTex *mtex = ma->mtex[b];
                if (mtex && mtex->tex && mtex->tex->ima) return true;
            }

        }
        base= base->next;
    }
    return false;
}

void ImagesExporter::exportImages(Scene *sce)
{
    if(hasImages(sce)) {
        openLibrary();
        MaterialFunctor mf;
        mf.forEachMaterialInScene<ImagesExporter>(sce, *this, this->export_settings->selected);

        closeLibrary();
    }
}

void ImagesExporter::operator()(Material *ma, Object *ob)
{
    int a;
    for (a = 0; a < MAX_MTEX; a++) {
        MTex *mtex = ma->mtex[a];
        if (mtex && mtex->tex && mtex->tex->ima) {

            Image *image = mtex->tex->ima;
            std::string name(id_name(image));
            name = translate_id(name);
            char rel[FILE_MAX];
            char abs[FILE_MAX];
            char src[FILE_MAX];
            char dir[FILE_MAX];
            
            BLI_split_dir_part(this->export_settings->filepath, dir, sizeof(dir));

            BKE_rebase_path(abs, sizeof(abs), rel, sizeof(rel), G.main->name, image->name, dir);

            if (abs[0] != '\0') {

                // make absolute source path
                BLI_strncpy(src, image->name, sizeof(src));
                BLI_path_abs(src, G.main->name);

                // make dest directory if it doesn't exist
                BLI_make_existing_file(abs);
            
                if (BLI_copy(src, abs) != 0) {
                    fprintf(stderr, "Cannot copy image to file's directory. \n");
                }
            } 
            
            if (find(mImages.begin(), mImages.end(), name) == mImages.end()) {
                COLLADASW::Image img(COLLADABU::URI(COLLADABU::URI::nativePathToUri(rel)), name, name); /* set name also to mNameNC. This helps other viewers import files exported from Blender better */
                img.add(mSW);

                mImages.push_back(name);
            }
        }
    }
}