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"public"-ized some previously "private" static method which are useful also outside. Added a "PC_OTHER" result code for user-defined purposes.

This commit is contained in:
giorgiomarcias 2014-10-17 08:54:34 +00:00
parent bc1975ad43
commit af0f42fedf
1 changed files with 75 additions and 75 deletions
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150
vcg/complex/algorithms/polygon_polychord_collapse.h
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@ -69,7 +69,8 @@ public:
PC_NOLINKCOND = 4,
PC_SINGBOTH = 8,
PC_SELFINTERSECT = 16,
PC_VOID = 32
PC_VOID = 32,
PC_OTHER = 64
};
/**
@ -1061,24 +1062,6 @@ public:
}
}
private:
/**
* @brief IsVertexAdjacentToAnyNonManifoldEdge checks if a vertex is adjacent to any non-manifold edge.
* @param pos The starting position.
* @return true if adjacent to non-manifold edges, false otherwise.
*/
static bool IsVertexAdjacentToAnyNonManifoldEdge (const vcg::face::Pos<FaceType> &pos) {
assert(!pos.IsNull());
vcg::face::JumpingPos<FaceType> jmpPos;
jmpPos.Set(pos.F(), pos.E(), pos.V());
do {
if (!jmpPos.IsManifold())
return true;
jmpPos.NextFE();
} while (jmpPos != pos);
return false;
}
/**
* @brief CheckPolychordFindStartPosition checks if it's a collapsable polychord.
* @param pos Input The starting position.
@ -1191,62 +1174,6 @@ private:
return PC_SUCCESS;
}
/**
* @brief IsPolychordSelfIntersecting checks if the input polychord intersects itself.
* @warning Don't call this function without being sure that it's a polychord
* (i.e. call CheckPolychordFindStartPoint() before calling IsPolychordSelfIntersecting().
* @param mesh The mesh used for getting the face index.
* @param startPos The starting position.
* @param chords The vector of chords.
* @param mark The current mark, used to identify quads already visited.
* @return true if it intersects itself, false otherwise.
*/
static bool IsPolychordSelfIntersecting (const PolyMeshType &mesh,
const vcg::face::Pos<FaceType> &startPos,
const PC_Chords &chords,
const unsigned long mark) {
assert(!startPos.IsNull());
vcg::face::Pos<FaceType> runPos = startPos;
vcg::face::Pos<FaceType> tmpPos;
std::pair<size_t, unsigned char> face_edge(std::numeric_limits<size_t>::max(), 0);
do {
assert(runPos.F()->VN() == 4);
// check if we've already crossed this face
face_edge.first = vcg::tri::Index(mesh, runPos.F());
face_edge.second = (runPos.E()+1)%2;
if (chords[face_edge].mark == mark)
return true;
// if this coord is adjacent to another coord of the same polychord
// i.e., this polychord touches itself without intersecting
// it might cause a wrong collapse, producing holes and non-2manifoldness
tmpPos = runPos;
tmpPos.FlipE();
if (!tmpPos.IsBorder()) {
tmpPos.FlipF();
face_edge.first = vcg::tri::Index(mesh, tmpPos.F());
face_edge.second = (tmpPos.E()+1)%2;
if (chords[face_edge].mark == mark)
return true;
}
tmpPos = runPos;
tmpPos.FlipV();
tmpPos.FlipE();
if (!tmpPos.IsBorder()) {
tmpPos.FlipF();
face_edge.first = vcg::tri::Index(mesh, tmpPos.F());
face_edge.second = (tmpPos.E()+1)%2;
if (chords[face_edge].mark == mark)
return true;
}
runPos.FlipE();
runPos.FlipV();
runPos.FlipE();
runPos.FlipF();
} while (runPos != startPos && !runPos.IsBorder());
return false;
}
/**
* @brief VisitPolychord updates the information of a polychord.
* @param mesh The mesh used for getting the face index.
@ -1303,6 +1230,79 @@ private:
assert(runPos == startPos || vcg::face::IsBorder(*startPos.F(),startPos.E())
|| runPos.F()->VN() != 4 || startPos.FFlip()->VN() != 4);
}
/**
* @brief IsVertexAdjacentToAnyNonManifoldEdge checks if a vertex is adjacent to any non-manifold edge.
* @param pos The starting position.
* @return true if adjacent to non-manifold edges, false otherwise.
*/
static bool IsVertexAdjacentToAnyNonManifoldEdge (const vcg::face::Pos<FaceType> &pos) {
assert(!pos.IsNull());
vcg::face::JumpingPos<FaceType> jmpPos;
jmpPos.Set(pos.F(), pos.E(), pos.V());
do {
if (!jmpPos.IsManifold())
return true;
jmpPos.NextFE();
} while (jmpPos != pos);
return false;
}
/**
* @brief IsPolychordSelfIntersecting checks if the input polychord intersects itself.
* @warning Don't call this function without being sure that it's a polychord
* (i.e. call CheckPolychordFindStartPoint() before calling IsPolychordSelfIntersecting().
* @param mesh The mesh used for getting the face index.
* @param startPos The starting position.
* @param chords The vector of chords.
* @param mark The current mark, used to identify quads already visited.
* @return true if it intersects itself, false otherwise.
*/
static bool IsPolychordSelfIntersecting (const PolyMeshType &mesh,
const vcg::face::Pos<FaceType> &startPos,
const PC_Chords &chords,
const unsigned long mark) {
assert(!startPos.IsNull());
vcg::face::Pos<FaceType> runPos = startPos;
vcg::face::Pos<FaceType> tmpPos;
std::pair<size_t, unsigned char> face_edge(std::numeric_limits<size_t>::max(), 0);
do {
assert(runPos.F()->VN() == 4);
// check if we've already crossed this face
face_edge.first = vcg::tri::Index(mesh, runPos.F());
face_edge.second = (runPos.E()+1)%2;
if (chords[face_edge].mark == mark)
return true;
// if this coord is adjacent to another coord of the same polychord
// i.e., this polychord touches itself without intersecting
// it might cause a wrong collapse, producing holes and non-2manifoldness
tmpPos = runPos;
tmpPos.FlipE();
if (!tmpPos.IsBorder()) {
tmpPos.FlipF();
face_edge.first = vcg::tri::Index(mesh, tmpPos.F());
face_edge.second = (tmpPos.E()+1)%2;
if (chords[face_edge].mark == mark)
return true;
}
tmpPos = runPos;
tmpPos.FlipV();
tmpPos.FlipE();
if (!tmpPos.IsBorder()) {
tmpPos.FlipF();
face_edge.first = vcg::tri::Index(mesh, tmpPos.F());
face_edge.second = (tmpPos.E()+1)%2;
if (chords[face_edge].mark == mark)
return true;
}
runPos.FlipE();
runPos.FlipV();
runPos.FlipE();
runPos.FlipF();
} while (runPos != startPos && !runPos.IsBorder());
return false;
}
};
}