MeshImporter.h

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/*
 * $Id: MeshImporter.h 38169 2011-07-06 21:37:31Z 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, Nathan Letwory.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef __BC__MESHIMPORTER_H__
#define __BC__MESHIMPORTER_H__

#include <map>
#include <vector>

#include "COLLADAFWIndexList.h"
#include "COLLADAFWInstanceGeometry.h"
#include "COLLADAFWMaterialBinding.h"
#include "COLLADAFWMesh.h"
#include "COLLADAFWMeshVertexData.h"
#include "COLLADAFWNode.h"
#include "COLLADAFWTextureCoordinateBinding.h"
#include "COLLADAFWTypes.h"
#include "COLLADAFWUniqueId.h"

#include "DNA_material_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_texture_types.h"

#include "ArmatureImporter.h"
#include "collada_utils.h"

// only for ArmatureImporter to "see" MeshImporter::get_object_by_geom_uid
class MeshImporterBase
{
public:
        virtual Object *get_object_by_geom_uid(const COLLADAFW::UniqueId& geom_uid) = 0;
};

class UVDataWrapper
{
        COLLADAFW::MeshVertexData *mVData;
public:
        UVDataWrapper(COLLADAFW::MeshVertexData& vdata);

#ifdef COLLADA_DEBUG
        void print();
#endif

        void getUV(int uv_index, float *uv);
};

class MeshImporter : public MeshImporterBase
{
private:

        UnitConverter *unitconverter;

        Scene *scene;
        ArmatureImporter *armature_importer;

        std::map<COLLADAFW::UniqueId, Mesh*> uid_mesh_map; // geometry unique id-to-mesh map
        std::map<COLLADAFW::UniqueId, Object*> uid_object_map; // geom uid-to-object
        // this structure is used to assign material indices to faces
        // it holds a portion of Mesh faces and corresponds to a DAE primitive list (<triangles>, <polylist>, etc.)
        struct Primitive {
                MFace *mface;
                unsigned int totface;
        };
        typedef std::map<COLLADAFW::MaterialId, std::vector<Primitive> > MaterialIdPrimitiveArrayMap;
        std::map<COLLADAFW::UniqueId, MaterialIdPrimitiveArrayMap> geom_uid_mat_mapping_map; // crazy name!
        std::multimap<COLLADAFW::UniqueId, COLLADAFW::UniqueId> materials_mapped_to_geom; //< materials that have already been mapped to a geometry. A pair of geom uid and mat uid, one geometry can have several materials
        

        void set_face_indices(MFace *mface, unsigned int *indices, bool quad);

        // not used anymore, test_index_face from blenkernel is better
#if 0
        // change face indices order so that v4 is not 0
        void rotate_face_indices(MFace *mface);
#endif
        
        void set_face_uv(MTFace *mtface, UVDataWrapper &uvs,
                                         COLLADAFW::IndexList& index_list, unsigned int *tris_indices);

        void set_face_uv(MTFace *mtface, UVDataWrapper &uvs,
                                        COLLADAFW::IndexList& index_list, int index, bool quad);

#ifdef COLLADA_DEBUG
        void print_index_list(COLLADAFW::IndexList& index_list);
#endif

        bool is_nice_mesh(COLLADAFW::Mesh *mesh);

        void read_vertices(COLLADAFW::Mesh *mesh, Mesh *me);
        
        int triangulate_poly(unsigned int *indices, int totvert, MVert *verts, std::vector<unsigned int>& tri);
        
        int count_new_tris(COLLADAFW::Mesh *mesh, Mesh *me);
        
        // TODO: import uv set names
        void read_faces(COLLADAFW::Mesh *mesh, Mesh *me, int new_tris);

        void get_vector(float v[3], COLLADAFW::MeshVertexData& arr, int i, int stride);

        bool flat_face(unsigned int *nind, COLLADAFW::MeshVertexData& nor, int count);
        
public:

        MeshImporter(UnitConverter *unitconv, ArmatureImporter *arm, Scene *sce);

        virtual Object *get_object_by_geom_uid(const COLLADAFW::UniqueId& geom_uid);
        
        MTex *assign_textures_to_uvlayer(COLLADAFW::TextureCoordinateBinding &ctexture,
                                                                         Mesh *me, TexIndexTextureArrayMap& texindex_texarray_map,
                                                                         MTex *color_texture);
        
        MTFace *assign_material_to_geom(COLLADAFW::MaterialBinding cmaterial,
                                                                        std::map<COLLADAFW::UniqueId, Material*>& uid_material_map,
                                                                        Object *ob, const COLLADAFW::UniqueId *geom_uid, 
                                                                        MTex **color_texture, char *layername, MTFace *texture_face,
                                                                        std::map<Material*, TexIndexTextureArrayMap>& material_texture_mapping_map, int mat_index);
        
        
        Object *create_mesh_object(COLLADAFW::Node *node, COLLADAFW::InstanceGeometry *geom,
                                                           bool isController,
                                                           std::map<COLLADAFW::UniqueId, Material*>& uid_material_map,
                                                           std::map<Material*, TexIndexTextureArrayMap>& material_texture_mapping_map);

        // create a mesh storing a pointer in a map so it can be retrieved later by geometry UID
        bool write_geometry(const COLLADAFW::Geometry* geom);

};

#endif