void Chain::push_viewedge_front(ViewEdge *iViewEdge, bool orientation)
{
orientation = !orientation;
ViewEdge::vertex_iterator v;
ViewEdge::vertex_iterator vend;
ViewEdge::vertex_iterator vfirst;
Vec3r previous, current;
if (true == orientation) {
v = iViewEdge->vertices_begin();
vfirst = v;
vend = iViewEdge->vertices_end();
}
else {
v = iViewEdge->vertices_last();
vfirst = v;
vend = iViewEdge->vertices_end();
}
if (!_Vertices.empty()) {
previous = _Vertices.front()->point2d();
if (orientation)
++v;
else
--v;
// Ensure the continuity of underlying FEdges
CurvePoint *cp = _Vertices.front(); // assumed to be instantiated as new CurvePoint(iSVertex, 0, 0.f);
SVertex *sv_last = cp->A();
SVertex *sv_curr = (*v);
FEdge *fe = (orientation) ? iViewEdge->fedgeA() : iViewEdge->fedgeB();
FEdge *fe2 = fe->duplicate();
fe2->setTemporary(true);
fe2->setVertexA(sv_curr);
fe2->setVertexB(sv_last);
sv_last->AddFEdge(fe2);
sv_curr->AddFEdge(fe2);
sv_curr->shape()->AddEdge(fe2);
}
else {
previous = (*v)->point2d();
}
do {
current = (*v)->point2d();
Curve::push_vertex_front((*v));
//_Length += (current - previous).norm();
previous = current;
if (orientation)
++v;
else
--v;
} while ((v != vend) && (v != vfirst));
if (v == vfirst) {
//Add last one:
current = (*v)->point2d();
Curve::push_vertex_front(*v);
//_Length += (current - previous).norm();
}
if (!_fedgeB)
_fedgeB = (orientation) ? iViewEdge->fedgeB() : iViewEdge->fedgeA();
}
