shape_reconstruction: attribute

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00001 /****************************************************************************
00002 * VCGLib                                                            o o     *
00003 * Visual and Computer Graphics Library                            o     o   *
00004 *                                                                _   O  _   *
00005 * Copyright(C) 2004-2012                                           \/)\/    *
00006 * Visual Computing Lab                                            /\/|      *
00007 * ISTI - Italian National Research Council                           |      *
00008 *                                                                    \      *
00009 * All rights reserved.                                                      *
00010 *                                                                           *
00011 * This program is free software; you can redistribute it and/or modify      *
00012 * it under the terms of the GNU General Public License as published by      *
00013 * the Free Software Foundation; either version 2 of the License, or         *
00014 * (at your option) any later version.                                       *
00015 *                                                                           *
00016 * This program is distributed in the hope that it will be useful,           *
00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
00019 * GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
00020 * for more details.                                                         *
00021 *                                                                           *
00022 ****************************************************************************/
00023 #ifndef VCG_TRI_ATTRIBUTE_SEAM_H
00024 #define VCG_TRI_ATTRIBUTE_SEAM_H
00025 
00026 /*
00027 
00028 // sample extract functor
00029 void v_extract(const src_mesh_t & wm, const src_face_t & f, int k, const dst_mesh_t & vm, dst_vertex_t & v)
00030 {
00031     (void)wm;
00032     (void)vm;
00033 
00034     v.P() = f.cP (k);
00035     v.N() = f.cWN(k);
00036     v.C() = f.cWC(k);
00037     v.T() = f.cWT(k);
00038 }
00039 
00040 // sample compare functor
00041 bool v_compare(const dst_mesh_t & vm, const dst_vertex_t & u, const dst_vertex_t & v)
00042 {
00043     (void)vm;
00044 
00045     return
00046     (
00047            (u.cN() == v.cN())
00048         && (u.cC() == v.cC())
00049         && (u.cT() == v.cT())
00050     );
00051 }
00052 
00053 // sample copy functor
00054 void v_copy(const dst_mesh_t & vm, const dst_vertex_t & u, dst_vertex_t & v)
00055 {
00056     (void)vm;
00057 
00058     v.P() = u.cP();
00059     v.N() = u.cN();
00060     v.C() = u.cC();
00061     v.T() = u.cT();
00062 }
00063 
00064 // create seams
00065 AttributeSeam::SplitVertex(src, dst, v_extract, v_compare, v_copy, 1.10f);
00066 
00067 */
00068 
00069 namespace vcg
00070 {
00071 
00072 namespace tri
00073 {
00074 
00075 class AttributeSeam
00076 {
00077     public:
00078 
00079         typedef AttributeSeam ThisType;
00080 
00081         enum ASMask
00082         {
00083             POSITION_PER_VERTEX = (1 << 0),
00084 
00085             NORMAL_PER_VERTEX   = (1 << 1),
00086             NORMAL_PER_WEDGE    = (1 << 2),
00087             NORMAL_PER_FACE     = (1 << 3),
00088 
00089             COLOR_PER_VERTEX    = (1 << 4),
00090             COLOR_PER_WEDGE     = (1 << 5),
00091             COLOR_PER_FACE      = (1 << 6),
00092 
00093             TEXCOORD_PER_VERTEX = (1 << 7),
00094             TEXCOORD_PER_WEDGE  = (1 << 8)
00095         };
00096 
00097         template <typename src_trimesh_t, typename dst_trimesh_t>
00098         struct ASExtract
00099         {
00100             const unsigned int mask;
00101 
00102             ASExtract(unsigned int vmask = 0) : mask(vmask)
00103             {
00104                 ;
00105             }
00106 
00107             void operator () (const src_trimesh_t & sm, const typename src_trimesh_t::FaceType & f, int k, const dst_trimesh_t & dm, typename dst_trimesh_t::VertexType & v) const
00108             {
00109                 (void)sm;
00110                 (void)dm;
00111 
00112                 const unsigned int m = this->mask;
00113                 const typename src_trimesh_t::VertexType & u = *(f.cV(k));
00114 
00115                 if ((m & AttributeSeam::POSITION_PER_VERTEX) != 0) v.P() = f.cP (k);
00116 
00117                 if ((m & AttributeSeam::NORMAL_PER_VERTEX)   != 0) v.N() = u.cN ( );
00118                 if ((m & AttributeSeam::NORMAL_PER_WEDGE)    != 0) v.N() = f.cWN(k);
00119                 if ((m & AttributeSeam::NORMAL_PER_FACE)     != 0) v.N() = f.cN ( );
00120 
00121                 if ((m & AttributeSeam::COLOR_PER_VERTEX)    != 0) v.C() = u.cC ( );
00122                 if ((m & AttributeSeam::COLOR_PER_WEDGE)     != 0) v.C() = f.cWC(k);
00123                 if ((m & AttributeSeam::COLOR_PER_FACE)      != 0) v.C() = f.cC ( );
00124 
00125                 if ((m & AttributeSeam::TEXCOORD_PER_VERTEX) != 0) v.T() = u.cT ( );
00126                 if ((m & AttributeSeam::TEXCOORD_PER_WEDGE)  != 0) v.T() = f.cWT(k);
00127             }
00128         };
00129 
00130         template <typename dst_trimesh_t>
00131         struct ASCompare
00132         {
00133             const unsigned int mask;
00134 
00135             ASCompare(unsigned int vmask = 0) : mask(vmask)
00136             {
00137                 ;
00138             }
00139 
00140             bool operator () (const dst_trimesh_t & sm, const typename dst_trimesh_t::VertexType & u, const typename dst_trimesh_t::VertexType & v) const
00141             {
00142                 (void)sm;
00143 
00144                 const unsigned int m = this->mask;
00145 
00146                 /*
00147                 if ((m & (AttributeSeam::POSITION_PER_VERTEX)) != 0)
00148                 {
00149                     if (u.cP() != v.cP()) return false;
00150                 }
00151                 */
00152 
00153                 if ((m & (AttributeSeam::NORMAL_PER_VERTEX | AttributeSeam::NORMAL_PER_WEDGE | AttributeSeam::NORMAL_PER_FACE)) != 0)
00154                 {
00155                     if (u.cN() != v.cN()) return false;
00156                 }
00157 
00158                 if ((m & (AttributeSeam::COLOR_PER_VERTEX | AttributeSeam::COLOR_PER_WEDGE | AttributeSeam::COLOR_PER_FACE)) != 0)
00159                 {
00160                     if (u.cC() != v.cC()) return false;
00161                 }
00162 
00163                 if ((m & (AttributeSeam::TEXCOORD_PER_VERTEX | AttributeSeam::TEXCOORD_PER_WEDGE)) != 0)
00164                 {
00165                     if (u.cT() != v.cT()) return false;
00166                 }
00167 
00168                 return true;
00169             }
00170         };
00171 
00172         // in-place version
00173         template <typename src_trimesh_t, typename extract_wedge_attribs_t, typename compare_vertex_attribs_t>
00174         static inline bool SplitVertex(src_trimesh_t & src, extract_wedge_attribs_t v_extract, compare_vertex_attribs_t & v_compare)
00175         {
00176             typedef typename src_trimesh_t::VertexType      src_vertex_t;
00177             typedef typename src_trimesh_t::VertexIterator  src_vertex_i;
00178             typedef typename src_trimesh_t::FaceType        src_face_t;
00179             typedef typename src_trimesh_t::FaceIterator    src_face_i;
00180             typedef typename src_trimesh_t::VertContainer   src_vertex_container_t;
00181 
00182             typedef vcg::tri::Allocator<src_trimesh_t>      src_mesh_allocator_t;
00183             typedef typename src_mesh_allocator_t :: template PointerUpdater<typename src_trimesh_t::VertexPointer> src_pointer_updater_t;
00184 
00185             if ((src.vn <= 0) || (src.fn <= 0))
00186             {
00187                 return true;
00188             }
00189 
00190             src_pointer_updater_t pt_upd;
00191             src_vertex_i   vi  = src_mesh_allocator_t::AddVertices(src, 1, pt_upd);
00192             src_vertex_t * vtx = &(*vi);
00193             src_vertex_t * vtxbase = &(src.vert[0]);
00194 
00195             const size_t vertex_count     = src.vert.size();
00196             const size_t vertex_pool_size = vertex_count;
00197 
00198             std::vector<int> vloc;
00199             vloc.reserve(vertex_pool_size);
00200             vloc.resize(vertex_count, -2);
00201 
00202             int vcount = int(src.vert.size());
00203             int idx    = 0;
00204 
00205             for (src_face_i it=src.face.begin(); it!=src.face.end(); ++it)
00206             {
00207                 src_face_t & f = (*it);
00208                 if (f.IsD()) continue;
00209 
00210                 for (int k=0; k<3; ++k)
00211                 {
00212                     idx = (f.cV(k) - vtxbase);
00213                     v_extract(src, f, k, src, *vtx);
00214 
00215                     if (vloc[idx] == -2)
00216                     {
00217                         vloc[idx] = -1;
00218                         src.vert[idx].ImportData(*vtx);
00219                     }
00220                     else
00221                     {
00222                         int vidx = idx;
00223                         do
00224                         {
00225                             if (v_compare(src, src.vert[vidx], *vtx)) break;
00226                             vidx = vloc[vidx];
00227                         } while (vidx >= 0);
00228 
00229                         if (vidx < 0)
00230                         {
00231                             vloc.push_back(vloc[idx]);
00232                             vloc[idx] = vcount;
00233 
00234                             vi = src_mesh_allocator_t::AddVertices(src, 1, pt_upd);
00235                             pt_upd.Update(vtx);
00236                             pt_upd.Update(vtxbase);
00237 
00238                             (*vi).ImportData(*vtx);
00239 
00240                             idx = vcount;
00241                             vcount++;
00242                         }
00243                         else
00244                         {
00245                             idx = vidx;
00246                         }
00247                     }
00248 
00249                     f.V(k) = &(src.vert[idx]);
00250                 }
00251             }
00252 
00253             src_mesh_allocator_t::DeleteVertex(src, *vtx);
00254 
00255             return true;
00256         }
00257 
00258         // out-of-place version
00259         template <typename src_trimesh_t, typename dst_trimesh_t, typename extract_wedge_attribs_t, typename compare_vertex_attribs_t, typename copy_vertex_t>
00260         static inline bool SplitVertex(const src_trimesh_t & src, dst_trimesh_t & dst, extract_wedge_attribs_t & v_extract, compare_vertex_attribs_t & v_compare, copy_vertex_t & v_copy)
00261         {
00262             typedef typename src_trimesh_t::VertexType           src_vertex_t;
00263             typedef typename src_trimesh_t::FaceType             src_face_t;
00264             typedef typename src_trimesh_t::ConstFaceIterator    src_face_ci;
00265 
00266             typedef typename dst_trimesh_t::VertContainer        dst_vertex_container_t;
00267             typedef typename dst_trimesh_t::VertexType           dst_vertex_t;
00268             typedef typename dst_trimesh_t::VertexIterator       dst_vertex_i;
00269             typedef typename dst_trimesh_t::FaceType             dst_face_t;
00270             typedef typename dst_trimesh_t::FaceIterator         dst_face_i;
00271 
00272             typedef vcg::tri::Allocator<dst_trimesh_t>           dst_mesh_allocator_t;
00273 
00274             /* GCC gets in troubles and need some hints ("template") to parse the following line */
00275             typedef typename dst_mesh_allocator_t :: template PointerUpdater<typename dst_trimesh_t::VertexPointer> dst_pointer_updater_t;
00276 
00277             if (reinterpret_cast<const void *>(&src) == reinterpret_cast<const void *>(&dst))
00278             {
00279                 return false;
00280             }
00281 
00282             dst.Clear();
00283 
00284             if ((src.vn <= 0) || (src.fn <= 0))
00285             {
00286                 return true;
00287             }
00288 
00289             const size_t vertex_count     = src.vert.size();
00290             const size_t vertex_pool_size = vertex_count;
00291 
00292             const src_vertex_t * vtxbase = &(src.vert[0]);
00293 
00294             std::vector<int> vloc;
00295             vloc.reserve(vertex_pool_size);
00296             vloc.resize(vertex_count, -2);
00297 
00298             dst_vertex_i vv;
00299             dst_pointer_updater_t pt_upd;
00300             pt_upd.preventUpdateFlag = true;
00301             dst_mesh_allocator_t::AddVertices(dst, 1 + int(vertex_count), pt_upd);
00302             dst_vertex_t * vtx = &(dst.vert[0]);
00303 
00304             dst_face_i fbase = dst_mesh_allocator_t::AddFaces(dst, src.fn);
00305             dst_face_i fi    = fbase;
00306 
00307             int vcount = int(dst.vert.size());
00308             int idx    = 0;
00309 
00310             for (src_face_ci it=src.face.begin(); it!=src.face.end(); ++it)
00311             {
00312                 const src_face_t & wf = (*it);
00313                 if (wf.IsD()) continue;
00314 
00315                 dst_face_t & vf = (*fi);
00316 
00317                 for (int k=0; k<3; ++k)
00318                 {
00319                     idx = (wf.cV(k) - vtxbase);
00320 
00321                     v_extract(src, wf, k, dst, *vtx);
00322 
00323                     if (vloc[idx] == -2)
00324                     {
00325                         vloc[idx] = -1;
00326                         v_copy(dst, *vtx, dst.vert[idx]);
00327                     }
00328                     else
00329                     {
00330                         int vidx = idx;
00331                         do
00332                         {
00333                             if (v_compare(dst, dst.vert[vidx], *vtx)) break;
00334                             vidx = vloc[vidx];
00335                         } while (vidx >= 0);
00336 
00337                         if (vidx < 0)
00338                         {
00339                             vloc.push_back(vloc[idx]);
00340                             vloc[idx] = vcount;
00341 
00342                             vv = dst_mesh_allocator_t::AddVertices(dst, 1, pt_upd);
00343                             pt_upd.Update(vtx);
00344                             v_copy(dst, *vtx, *vv);
00345 
00346                             idx = vcount;
00347                             vcount++;
00348                         }
00349                         else
00350                         {
00351                             idx = vidx;
00352                         }
00353                     }
00354 
00355                     vf.V(k) = reinterpret_cast<dst_vertex_t *>(idx);
00356                 }
00357 
00358                 fi++;
00359             }
00360 
00361             {
00362                 std::vector<int> tmp;
00363                 vloc.swap(tmp);
00364             }
00365 
00366             dst_vertex_t * vstart = &(dst.vert[0]);
00367 
00368             for (dst_face_i it=fbase; it!=dst.face.end(); ++it)
00369             {
00370                 dst_face_t & vf = (*it);
00371 
00372                 vf.V(0) = vstart + reinterpret_cast<const int>(vf.V(0));
00373                 vf.V(1) = vstart + reinterpret_cast<const int>(vf.V(1));
00374                 vf.V(2) = vstart + reinterpret_cast<const int>(vf.V(2));
00375             }
00376 
00377             dst_mesh_allocator_t::DeleteVertex(dst, *vtx);
00378 
00379             return true;
00380         }
00381 };
00382 
00383 } // end namespace tri
00384 
00385 } // end namespace vcg
00386 
00387 #endif // VCG_TRI_ATTRIBUTE_SEAM_H