Developer Documentation
FaceFunctions.cc
1 
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51 
52 
53 
54 #include "MeshRepairPlugin.hh"
56 
57 //-----------------------------------------------------------------------------
58 
59 void
60 MeshRepairPlugin::detectTriangleAspect(int _objectId, float _aspect) {
61 
62  // get the target mesh
63  TriMesh* mesh = 0;
64 
65  PluginFunctions::getMesh(_objectId, mesh);
66 
67  if (mesh) {
68 
69  unsigned int count(0);
70 
71  // Clear current face selection
72  MeshSelection::clearFaceSelection(mesh);
73 
74  TriMesh::FaceIter f_it, f_end(mesh->faces_end());
75  TriMesh::FVIter fv_it;
76  TriMesh::FEIter fe_it;
77 
78  for (f_it = mesh->faces_begin(); f_it != f_end; ++f_it) {
79  fv_it = mesh->fv_iter(*f_it);
80 
81  const TriMesh::Point& p0 = mesh->point(*fv_it);
82  const TriMesh::Point& p1 = mesh->point(*(++fv_it));
83  const TriMesh::Point& p2 = mesh->point(*(++fv_it));
84 
85  if (ACG::Geometry::aspectRatio(p0, p1, p2) > _aspect) {
86  mesh->status(*f_it).set_selected(true);
87  ++count;
88  }
89  }
90  if (count > 0) {
91  emit updatedObject(_objectId, UPDATE_SELECTION);
92  emit createBackup(_objectId, "Select triangles", UPDATE_SELECTION);
93  emit scriptInfo( "detectTriangleAspect(" + QString::number(_objectId) + ", " + QString::number(_aspect) + ")" );
94  }
95  emit log(
96  "Selected " + QString::number(count) + " triangles on object " + QString::number(_objectId)
97  + " with aspect ratio greater than " + QString::number(_aspect) + ".");
98  } else {
99  emit log("Cannot detect skinny triangles on non-trimesh " + QString::number(_objectId) + ".");
100  }
101 }
102 
103 //-----------------------------------------------------------------------------
104 
105 void
107 
108  // get the target mesh
109  TriMesh* triMesh = 0;
110  PolyMesh* polyMesh = 0;
111 
112  PluginFunctions::getMesh(_objectId,triMesh);
113  PluginFunctions::getMesh(_objectId,polyMesh);
114 
115  if (triMesh)
116  flipOrientation(*triMesh);
117  else if (polyMesh)
118  flipOrientation(*polyMesh);
119  else
120  emit log( LOGERR,tr("Unsupported Object Type for normal flipping!") );
121 
122 
123  emit updatedObject(_objectId, UPDATE_ALL);
124  emit createBackup( _objectId, "Flipped Normals", UPDATE_ALL);
125  emit scriptInfo( "flipOrientation(" + QString::number(_objectId) + ")" );
126 }
127 
128 
129 //-----------------------------------------------------------------------------
bool getMesh(int _identifier, PolyMesh *&_mesh)
Get the Poly Mesh which has the given identifier.
Scalar aspectRatio(const VectorT< Scalar, N > &_v0, const VectorT< Scalar, N > &_v1, const VectorT< Scalar, N > &_v2)
return aspect ratio (length/height) of triangle
Definition: Algorithms.cc:1266
void detectTriangleAspect(int _objectId, float _aspect)
Detect triangles with aspect ratio greater than _aspect and select them.
void flipOrientation(int _objectId)
Flips the normals of all selected faces by changing the vertex order.
Functions for selection on a mesh.
const UpdateType UPDATE_SELECTION(UpdateTypeSet(1)<< 4)
Selection updated.
Kernel::Point Point
Coordinate type.
Definition: PolyMeshT.hh:115
const UpdateType UPDATE_ALL(UpdateTypeSet(1))
Identifier for all updates.