GeometryExporter.h

Go to the documentation of this file.

/*
 * $Id: GeometryExporter.h 38079 2011-07-04 08:59:28Z jesterking $
 *
 * ***** 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 *****
 */

#ifndef __GEOMETRYEXPORTER_H__
#define __GEOMETRYEXPORTER_H__

#include <string>
#include <vector>
#include <set>

#include "COLLADASWStreamWriter.h"
#include "COLLADASWLibraryGeometries.h"
#include "COLLADASWInputList.h"

#include "DNA_mesh_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"

// TODO: optimize UV sets by making indexed list with duplicates removed
class GeometryExporter : COLLADASW::LibraryGeometries
{
        struct Face
        {
                unsigned int v1, v2, v3, v4;
        };

        struct Normal
        {
                float x, y, z;
        };

        Scene *mScene;

public:
        GeometryExporter(COLLADASW::StreamWriter *sw);

        void exportGeom(Scene *sce, bool export_selected);

        void operator()(Object *ob);

        // powerful because it handles both cases when there is material and when there's not
        void createPolylist(int material_index,
                                                bool has_uvs,
                                                bool has_color,
                                                Object *ob,
                                                std::string& geom_id,
                                                std::vector<Face>& norind);
        
        // creates <source> for positions
        void createVertsSource(std::string geom_id, Mesh *me);

        void createVertexColorSource(std::string geom_id, Mesh *me);

        std::string makeTexcoordSourceId(std::string& geom_id, int layer_index);

        //creates <source> for texcoords
        void createTexcoordsSource(std::string geom_id, Mesh *me);

        //creates <source> for normals
        void createNormalsSource(std::string geom_id, Mesh *me, std::vector<Normal>& nor);

        void create_normals(std::vector<Normal> &nor, std::vector<Face> &ind, Mesh *me);
        
        std::string getIdBySemantics(std::string geom_id, COLLADASW::InputSemantic::Semantics type, std::string other_suffix = "");
        
        COLLADASW::URI getUrlBySemantics(std::string geom_id, COLLADASW::InputSemantic::Semantics type, std::string other_suffix = "");

        COLLADASW::URI makeUrl(std::string id);
        
        /* int getTriCount(MFace *faces, int totface);*/
private:
        std::set<std::string> exportedGeometry;
};

struct GeometryFunctor {
        // f should have
        // void operator()(Object* ob)
        template<class Functor>
        void forEachMeshObjectInScene(Scene *sce, Functor &f, bool export_selected)
        {
                
                Base *base= (Base*) sce->base.first;
                while(base) {
                        Object *ob = base->object;
                        
                        if (ob->type == OB_MESH && ob->data
                                && !(export_selected && !(ob->flag && SELECT))) {
                                f(ob);
                        }
                        base= base->next;
                        
                }
        }
};

#endif