EdgeFunctions.cc 12.2 KB
Newer Older
Jan Möbius's avatar
Jan Möbius committed
1 2 3 4

/*===========================================================================*\
 *                                                                            *
 *                              OpenFlipper                                   *
Jan Möbius's avatar
Jan Möbius committed
5
 *      Copyright (C) 2001-2014 by Computer Graphics Group, RWTH Aachen       *
Jan Möbius's avatar
Jan Möbius committed
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
 *                           www.openflipper.org                              *
 *                                                                            *
 *--------------------------------------------------------------------------- *
 *  This file is part of OpenFlipper.                                         *
 *                                                                            *
 *  OpenFlipper is free software: you can redistribute it and/or modify       *
 *  it under the terms of the GNU Lesser General Public License as            *
 *  published by the Free Software Foundation, either version 3 of            *
 *  the License, or (at your option) any later version with the               *
 *  following exceptions:                                                     *
 *                                                                            *
 *  If other files instantiate templates or use macros                        *
 *  or inline functions from this file, or you compile this file and          *
 *  link it with other files to produce an executable, this file does         *
 *  not by itself cause the resulting executable to be covered by the         *
 *  GNU Lesser General Public License. This exception does not however        *
 *  invalidate any other reasons why the executable file might be             *
 *  covered by the GNU Lesser General Public License.                         *
 *                                                                            *
 *  OpenFlipper 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 Lesser General Public License for more details.                       *
 *                                                                            *
 *  You should have received a copy of the GNU LesserGeneral Public           *
 *  License along with OpenFlipper. If not,                                   *
 *  see <http://www.gnu.org/licenses/>.                                       *
 *                                                                            *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                            *
 *   $Revision$                                                       *
 *   $LastChangedBy$                                                *
 *   $Date$                     *
 *                                                                            *
\*===========================================================================*/




#include "MeshRepairPlugin.hh"
Jan Möbius's avatar
Jan Möbius committed
48
#include <MeshTools/MeshSelectionT.hh>
Jan Möbius's avatar
Jan Möbius committed
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

//-----------------------------------------------------------------------------

void MeshRepairPlugin::selectEdgesShorterThan(int _objectId,double _length) {
  selectionEdgeLength(_objectId,_length,false);

  emit scriptInfo( "selectEdgesShorterThan(" + QString::number(_objectId) + ", " + QString::number(_length) + ")" );
}

//-----------------------------------------------------------------------------

void MeshRepairPlugin::selectEdgesLongerThan(int _objectId,double _length) {
  selectionEdgeLength(_objectId,_length,true);

  emit scriptInfo( "selectEdgesLongerThan(" + QString::number(_objectId) + ", " + QString::number(_length) + ")" );
}

//-----------------------------------------------------------------------------


void MeshRepairPlugin::selectionEdgeLength(int _objectId, double _length, bool _larger) {

  // get the target mesh
  TriMesh* triMesh = 0;

  PluginFunctions::getMesh(_objectId,triMesh);

  if ( triMesh ) {
    TriMesh::EdgeIter e_it, e_end=triMesh->edges_end();

    // Clear current edge selection
    MeshSelection::clearEdgeSelection(triMesh);

    // Iterate over all edges
    for (e_it = triMesh->edges_begin(); e_it != e_end ; ++e_it) {
Jan Möbius's avatar
Jan Möbius committed
84
      TriMesh::HalfedgeHandle he = triMesh->halfedge_handle( *e_it, 0 );
Jan Möbius's avatar
Jan Möbius committed
85 86 87 88 89
      TriMesh::Point p1 = triMesh->point( triMesh->from_vertex_handle( he ) );
      TriMesh::Point p2 = triMesh->point( triMesh->to_vertex_handle( he )   );

      if ( _larger ) {
        if ( (p1 - p2).norm() > _length)
Jan Möbius's avatar
Jan Möbius committed
90
          triMesh->status(*e_it).set_selected(true);
Jan Möbius's avatar
Jan Möbius committed
91 92
      } else {
        if ( (p1 - p2).norm() < _length)
Jan Möbius's avatar
Jan Möbius committed
93
          triMesh->status(*e_it).set_selected(true);
Jan Möbius's avatar
Jan Möbius committed
94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114
      }
    }

    emit updatedObject(_objectId,UPDATE_SELECTION);
    emit createBackup( _objectId, "Select Edges", UPDATE_SELECTION);

    return;
  }

  // get the target mesh
  PolyMesh* polyMesh = 0;
  PluginFunctions::getMesh(_objectId,polyMesh);

  if ( polyMesh ) {
    PolyMesh::EdgeIter e_it, e_end=polyMesh->edges_end();

    // Clear current edge selection
    MeshSelection::clearEdgeSelection(polyMesh);

    // Iterate over all edges
    for (e_it = polyMesh->edges_begin(); e_it != e_end ; ++e_it) {
Jan Möbius's avatar
Jan Möbius committed
115
      PolyMesh::HalfedgeHandle he = polyMesh->halfedge_handle( *e_it, 0 );
Jan Möbius's avatar
Jan Möbius committed
116 117 118 119 120
      PolyMesh::Point p1 = polyMesh->point( polyMesh->from_vertex_handle( he ) );
      PolyMesh::Point p2 = polyMesh->point( polyMesh->to_vertex_handle( he )   );

      if ( _larger ) {
        if ( (p1 - p2).norm() > _length)
Jan Möbius's avatar
Jan Möbius committed
121
          polyMesh->status(*e_it).set_selected(true);
Jan Möbius's avatar
Jan Möbius committed
122 123
      } else {
        if ( (p1 - p2).norm() < _length)
Jan Möbius's avatar
Jan Möbius committed
124
          polyMesh->status(*e_it).set_selected(true);
Jan Möbius's avatar
Jan Möbius committed
125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152
      }
    }

    emit updatedObject(_objectId,UPDATE_SELECTION);
    emit createBackup( _objectId, "Select Edges", UPDATE_SELECTION);

    return;
  }

  emit log( LOGERR,tr("Unsupported Object Type for edge selection") );

}

//-----------------------------------------------------------------------------

void MeshRepairPlugin::removeSelectedEdges(int _objectId) {

  // get the target mesh
  TriMesh* triMesh = 0;

  PluginFunctions::getMesh(_objectId, triMesh);

  if (triMesh) {

    TriMesh::EdgeIter e_it, e_end = triMesh->edges_end();

    for (e_it = triMesh->edges_begin(); e_it != e_end; ++e_it) {

Jan Möbius's avatar
Jan Möbius committed
153
      if (!triMesh->status(*e_it).deleted() && triMesh->status(*e_it).selected()) {
Jan Möbius's avatar
Jan Möbius committed
154

Jan Möbius's avatar
Jan Möbius committed
155 156
        const TriMesh::VHandle v0 = triMesh->to_vertex_handle(triMesh->halfedge_handle(*e_it, 0));
        const TriMesh::VHandle v1 = triMesh->to_vertex_handle(triMesh->halfedge_handle(*e_it, 1));
Jan Möbius's avatar
Jan Möbius committed
157 158 159 160 161 162

        const bool boundary0 = triMesh->is_boundary(v0);
        const bool boundary1 = triMesh->is_boundary(v1);

        const bool feature0 = triMesh->status(v0).feature();
        const bool feature1 = triMesh->status(v1).feature();
Jan Möbius's avatar
Jan Möbius committed
163
        const bool featureE = triMesh->status(*e_it).feature();
Jan Möbius's avatar
Jan Möbius committed
164 165 166 167 168

        // Collapsing v1 into vo:
        // collapse is ok, if collapsed vertex is not a feature vertex or the target vertex is a feature
        // and if we collapse along an feature edge or if the collapsed vertex is not a feature
        if ((!boundary1 || boundary0) && (!feature1 || (feature0 && featureE)) && triMesh->is_collapse_ok(
Jan Möbius's avatar
Jan Möbius committed
169 170
            triMesh->halfedge_handle(*e_it, 0)))
          triMesh->collapse(triMesh->halfedge_handle(*e_it, 0));
Jan Möbius's avatar
Jan Möbius committed
171
        else if ((!boundary0 || boundary1) && (!feature0 || (feature1 && featureE)) && triMesh->is_collapse_ok(
Jan Möbius's avatar
Jan Möbius committed
172 173
            triMesh->halfedge_handle(*e_it, 1)))
          triMesh->collapse(triMesh->halfedge_handle(*e_it, 1));
Jan Möbius's avatar
Jan Möbius committed
174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
      }
    }

    triMesh->garbage_collection();
    triMesh->update_normals();

    emit updatedObject(_objectId, UPDATE_ALL);
    emit createBackup(_objectId, "Removed selected Edges", UPDATE_ALL);
    emit scriptInfo("removeSelectedEdges(" + QString::number(_objectId) + ")");

    return;
  }

  emit log(LOGERR, tr("Unsupported Object Type for edge removal"));

}



void MeshRepairPlugin::detectSkinnyTriangleByAngle(int _objectId, double _angle, bool _remove) {
  // get the target mesh
  TriMesh* triMesh = 0;

  PluginFunctions::getMesh(_objectId, triMesh);

  if (triMesh) {

    // Clear current edge selection
    MeshSelection::clearEdgeSelection(triMesh);

    double maxAngle = cos(_angle * M_PI / 180.0);
    double angle = 0.0;
    TriMesh::EdgeIter e_it, e_end = triMesh->edges_end();

    for (e_it = triMesh->edges_begin(); e_it != e_end; ++e_it) {

      // Check prerequisites
Jan Möbius's avatar
Jan Möbius committed
211
      if (!triMesh->status(*e_it).deleted() && !triMesh->status(*e_it).feature() && triMesh->is_flip_ok(*e_it)) {
Jan Möbius's avatar
Jan Möbius committed
212 213 214

        // For both halfedges
        for (unsigned int h = 0; h < 2; ++h) {
Jan Möbius's avatar
Jan Möbius committed
215
          TriMesh::HalfedgeHandle hh = triMesh->halfedge_handle(*e_it, h);
Jan Möbius's avatar
Jan Möbius committed
216 217 218 219 220 221 222 223 224 225
          const TriMesh::Point& a = triMesh->point(triMesh->from_vertex_handle(hh));
          const TriMesh::Point& b = triMesh->point(triMesh->to_vertex_handle(hh));
          hh = triMesh->next_halfedge_handle(hh);
          const TriMesh::Point& c = triMesh->point(triMesh->to_vertex_handle(hh));

          angle = ((a - c).normalize() | (b - c).normalize());

          if (angle < maxAngle) {

            // selcet it
Jan Möbius's avatar
Jan Möbius committed
226
            triMesh->status(*e_it).set_selected(true);
Jan Möbius's avatar
Jan Möbius committed
227 228 229

            // remove it if requested
            if (_remove)
Jan Möbius's avatar
Jan Möbius committed
230
              triMesh->flip(*e_it);
Jan Möbius's avatar
Jan Möbius committed
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281
          }
        }
      }
    }

    if (_remove) {
      emit updatedObject(_objectId, UPDATE_ALL);
      emit createBackup(_objectId, tr("Removed cap edges"), UPDATE_ALL);
    } else {
      emit updatedObject(_objectId, UPDATE_SELECTION);
      emit createBackup(_objectId, tr("Selected cap edges"), UPDATE_ALL);
    } emit
    scriptInfo(
        "detectSkinnyTriangleByAngle(" + QString::number(_objectId) + "," + QString::number(_angle) + ","
        + _remove + ")");

    return;
  }

  emit log(LOGERR, tr("Unsupported Object Type for Cap detection!"));
}

//-----------------------------------------------------------------------------


void MeshRepairPlugin::detectFoldover(int _objectId, float _angle) {

  // get the target mesh
  TriMeshObject* trimesh_o = 0;
  PolyMeshObject* polymesh_o = 0;

  PluginFunctions::getObject(_objectId, trimesh_o);
  PluginFunctions::getObject(_objectId, polymesh_o);

  unsigned int count = 0;

  if (trimesh_o != 0) {

    // get the target mesh
    TriMesh* mesh = trimesh_o->mesh();

    if (mesh) {

      // Clear current edge selection
      MeshSelection::clearEdgeSelection(mesh);

      TriMesh::EdgeIter e_it, e_end(mesh->edges_end());
      TriMesh::FaceHandle fh;
      TriMesh::Scalar a, cosa = cos(_angle / 180.0 * M_PI);

      for (e_it = mesh->edges_begin(); e_it != e_end; ++e_it) {
Jan Möbius's avatar
Jan Möbius committed
282 283 284
        if (!mesh->is_boundary(*e_it)) {
          a = (mesh->normal(mesh->face_handle(mesh->halfedge_handle(*e_it, 0))) | mesh->normal(
              mesh->face_handle(mesh->halfedge_handle(*e_it, 1))));
Jan Möbius's avatar
Jan Möbius committed
285 286

          if (a < cosa) {
Jan Möbius's avatar
Jan Möbius committed
287
            mesh->status(mesh->edge_handle(mesh->halfedge_handle(*e_it, 0))). set_selected(true);
Jan Möbius's avatar
Jan Möbius committed
288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307
            ++count;
          }
        }
      }
    }
  } else if (polymesh_o != 0) {

    // get the target mesh
    PolyMesh* mesh = polymesh_o->mesh();

    if (mesh) {

      // Clear current edge selection
      MeshSelection::clearEdgeSelection(mesh);

      PolyMesh::EdgeIter e_it, e_end(mesh->edges_end());
      PolyMesh::FaceHandle fh;
      PolyMesh::Scalar a, cosa = cos(_angle / 180.0 * M_PI);

      for (e_it = mesh->edges_begin(); e_it != e_end; ++e_it) {
Jan Möbius's avatar
Jan Möbius committed
308 309 310
        if (!mesh->is_boundary(*e_it)) {
          a = (mesh->normal(mesh->face_handle(mesh->halfedge_handle(*e_it, 0))) | mesh->normal(
              mesh->face_handle(mesh->halfedge_handle(*e_it, 1))));
Jan Möbius's avatar
Jan Möbius committed
311 312

          if (a < cosa) {
Jan Möbius's avatar
Jan Möbius committed
313
            mesh->status(mesh->edge_handle(mesh->halfedge_handle(*e_it, 0))). set_selected(true);
Jan Möbius's avatar
Jan Möbius committed
314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332
            ++count;
          }
        }
      }
    }
  }

  if (count > 0) {
    emit updatedObject(_objectId, UPDATE_SELECTION);
    emit createBackup(_objectId, "Select edges", UPDATE_SELECTION);
    emit scriptInfo("detectFoldover(" + QString::number(_objectId) + ", " + QString::number(_angle) + ")");
  }
  emit log(
      "Selected " + QString::number(count) + " fold-overs on object " + QString::number(_objectId)
  + " with angle greater than " + QString::number(_angle) + ".");
}


//-----------------------------------------------------------------------------