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#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
#include <BRepGProp.hxx>
#include <BRep_Tool.hxx>
#include <GeomAPI_ProjectPointOnCurve.hxx>
#pragma clang diagnostic pop
#include "occ_edge.hpp"
#include "occgeom.hpp"
namespace netgen
{
OCCEdge::OCCEdge(TopoDS_Shape edge_, GeometryVertex & start_, GeometryVertex & end_)
: GeometryEdge(start_, end_),
edge(TopoDS::Edge(edge_))
{
curve = BRep_Tool::Curve(edge, s0, s1);
BRepGProp::LinearProperties(edge, props);
auto verts = GetVertices(edge);
if(verts.size() != 2)
throw Exception("OCC edge does not have 2 vertices");
if(start != end)
{
// swap start/end if necessary
double d00 = Dist(GetPoint(0), start->GetPoint());
double d01 = Dist(GetPoint(0), end->GetPoint());
if(d01 < d00)
swap(start, end);
}
}
double OCCEdge::GetLength() const
{
return props.Mass();
}
Point<3> OCCEdge::GetCenter() const
{
return occ2ng( props.CentreOfMass() );
}
Point<3> OCCEdge::GetPoint(double t) const
{
return occ2ng( curve->Value(s0+t*(s1-s0)) );
}
double OCCEdge::CalcStep(double t, double sag) const
{
throw Exception(ToString("not implemented") + __FILE__ + ":" + ToString(__LINE__));
}
void OCCEdge::ProjectPoint(Point<3>& p, EdgePointGeomInfo* gi) const
{
auto pnt = ng2occ(p);
// extend the projection parameter range, else projection might fail
// for an endpoint
// see discussion here: https://forum.ngsolve.org/t/how-to-apply-occidentification-correctly/2555
// I do not see a better way using occ tolerances?
double eps = 1e-7 * (s1-s0);
GeomAPI_ProjectPointOnCurve proj(pnt, curve, s0-eps, s1+eps);
pnt = proj.NearestPoint();
if(gi)
gi->dist = (proj.LowerDistanceParameter() - s0)/(s1-s0);
p = occ2ng(pnt);
}
Vec<3> OCCEdge::GetTangent(double t) const
{
t = s0 + t*(s1-s0);
gp_Pnt p;
gp_Vec v;
curve->D1(t, p, v);
return occ2ng(v) * (s1-s0);
}
}
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