Developer Documentation
FaceFunctions.cc
1 
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42 
43 
44 
45 
46 #include "MeshRepairPlugin.hh"
48 
49 //-----------------------------------------------------------------------------
50 
51 void
52 MeshRepairPlugin::detectTriangleAspect(int _objectId, float _aspect) {
53 
54  // get the target mesh
55  TriMesh* mesh = 0;
56 
57  PluginFunctions::getMesh(_objectId, mesh);
58 
59  if (mesh) {
60 
61  unsigned int count(0);
62 
63  // Clear current face selection
64  MeshSelection::clearFaceSelection(mesh);
65 
66  TriMesh::FaceIter f_it, f_end(mesh->faces_end());
67  TriMesh::FVIter fv_it;
68  TriMesh::FEIter fe_it;
69 
70  for (f_it = mesh->faces_begin(); f_it != f_end; ++f_it) {
71  fv_it = mesh->fv_iter(*f_it);
72 
73  const TriMesh::Point& p0 = mesh->point(*fv_it);
74  const TriMesh::Point& p1 = mesh->point(*(++fv_it));
75  const TriMesh::Point& p2 = mesh->point(*(++fv_it));
76 
77  if (ACG::Geometry::aspectRatio(p0, p1, p2) > _aspect) {
78  mesh->status(*f_it).set_selected(true);
79  ++count;
80  }
81  }
82  if (count > 0) {
83  emit updatedObject(_objectId, UPDATE_SELECTION);
84  emit createBackup(_objectId, "Select triangles", UPDATE_SELECTION);
85  emit scriptInfo( "detectTriangleAspect(" + QString::number(_objectId) + ", " + QString::number(_aspect) + ")" );
86  }
87  emit log(
88  "Selected " + QString::number(count) + " triangles on object " + QString::number(_objectId)
89  + " with aspect ratio greater than " + QString::number(_aspect) + ".");
90  } else {
91  emit log("Cannot detect skinny triangles on non-trimesh " + QString::number(_objectId) + ".");
92  }
93 }
94 
95 //-----------------------------------------------------------------------------
96 
97 void
99 
100  // get the target mesh
101  TriMesh* triMesh = 0;
102  PolyMesh* polyMesh = 0;
103 
104  PluginFunctions::getMesh(_objectId,triMesh);
105  PluginFunctions::getMesh(_objectId,polyMesh);
106 
107  if (triMesh)
108  flipOrientation(*triMesh);
109  else if (polyMesh)
110  flipOrientation(*polyMesh);
111  else
112  emit log( LOGERR,tr("Unsupported Object Type for normal flipping!") );
113 
114 
115  emit updatedObject(_objectId, UPDATE_ALL);
116  emit createBackup( _objectId, "Flipped Normals", UPDATE_ALL);
117  emit scriptInfo( "flipOrientation(" + QString::number(_objectId) + ")" );
118 }
119 
120 
121 //-----------------------------------------------------------------------------
const UpdateType UPDATE_ALL(UpdateTypeSet(1))
Identifier for all updates.
Kernel::Point Point
Coordinate type.
Definition: PolyMeshT.hh:112
const UpdateType UPDATE_SELECTION(UpdateTypeSet(16))
Selection updated.
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:1256
Functions for selection on a mesh.
void flipOrientation(int _objectId)
Flips the normals of all selected faces by changing the vertex order.
bool getMesh(int _identifier, PolyMesh *&_mesh)
Get the Poly Mesh which has the given identifier.
void detectTriangleAspect(int _objectId, float _aspect)
Detect triangles with aspect ratio greater than _aspect and select them.