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#include <TopoDSToStep_FacetedTool.ixx>
#include <BRep_Tool.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Edge.hxx>
#include <Geom_Plane.hxx>
#include <Geom_Surface.hxx>
#include <Geom_BezierSurface.hxx>
#include <Geom_BSplineSurface.hxx>
#include <Geom2d_Curve.hxx>
#include <Geom2d_Line.hxx>
#include <Geom2d_BezierCurve.hxx>
#include <Geom2d_BSplineCurve.hxx>
// ============================================================================
// Method :
// Purpose :
// ============================================================================
TopoDSToStep_FacetedError TopoDSToStep_FacetedTool::CheckTopoDSShape
(const TopoDS_Shape& aShape)
{
TopExp_Explorer FaceExp, EdgeExp;
FaceExp.Init(aShape,TopAbs_FACE);
while (FaceExp.More()) {
const TopoDS_Face aFace = TopoDS::Face(FaceExp.Current());
FaceExp.Next();
Handle(Geom_Surface) Su = BRep_Tool::Surface(aFace);
if (Su->IsKind(STANDARD_TYPE(Geom_Plane))) {
// OK -> no further check
}
else if (Su->IsKind(STANDARD_TYPE(Geom_BSplineSurface))) {
Handle(Geom_BSplineSurface) aBsplS =
Handle(Geom_BSplineSurface)::DownCast(Su);
Standard_Integer uDeg, vDeg, nUPol, nVPol;
uDeg = aBsplS->UDegree();
if (uDeg == 1) {
vDeg = aBsplS->VDegree();
if (vDeg == 1) {
nUPol = aBsplS->NbUPoles();
nVPol = aBsplS->NbVPoles();
if (nUPol != 2 || nVPol != 2) {
return TopoDSToStep_SurfaceNotPlane;
}
}
else {
// Degree in v != 1
return TopoDSToStep_SurfaceNotPlane;
}
}
else {
// Degree in u != 1
return TopoDSToStep_SurfaceNotPlane;
}
}
else if (Su->IsKind(STANDARD_TYPE(Geom_BezierSurface))) {
Handle(Geom_BezierSurface) aBzS =
Handle(Geom_BezierSurface)::DownCast(Su);
Standard_Integer uDeg, vDeg, nUPol, nVPol;
uDeg = aBzS->UDegree();
if (uDeg == 1) {
vDeg = aBzS->VDegree();
if (vDeg == 1) {
nUPol = aBzS->NbUPoles();
nVPol = aBzS->NbVPoles();
if (nUPol != 2 || nVPol != 2) {
return TopoDSToStep_SurfaceNotPlane;
}
}
else {
// Degree in v != 1
return TopoDSToStep_SurfaceNotPlane;
}
}
else {
// Degree in u != 1
return TopoDSToStep_SurfaceNotPlane;
}
}
else {
// the surface is neither a Plane nor a flat BSpline or Beziersurface
return TopoDSToStep_SurfaceNotPlane;
}
// surface is flat; now check, if the PCurves are linear
EdgeExp.Init(aFace,TopAbs_EDGE);
while (EdgeExp.More()) {
const TopoDS_Edge anEdge = TopoDS::Edge(EdgeExp.Current());
EdgeExp.Next();
Standard_Real cf, cl;
Handle(Geom2d_Curve) C2d =
BRep_Tool::CurveOnSurface(anEdge, aFace, cf, cl);
if (C2d->IsKind(STANDARD_TYPE(Geom2d_Line))) {
return TopoDSToStep_FacetedDone;
}
else if (C2d->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve))) {
Handle(Geom2d_BSplineCurve) aBspl2d =
Handle(Geom2d_BSplineCurve)::DownCast(C2d);
if ((aBspl2d->Degree() != 1) || (aBspl2d->NbPoles() != 2)) {
return TopoDSToStep_PCurveNotLinear;
}
}
else if (C2d->IsKind(STANDARD_TYPE(Geom2d_BezierCurve))) {
Handle(Geom2d_BezierCurve) aBzC2d =
Handle(Geom2d_BezierCurve)::DownCast(C2d);
if ((aBzC2d->Degree() != 1) || (aBzC2d->NbPoles() != 2)) {
return TopoDSToStep_PCurveNotLinear;
}
}
else {
return TopoDSToStep_PCurveNotLinear;
}
} // end while (EdgeExp.More())
} // end while (FaceExp.More())
return TopoDSToStep_FacetedDone;
}
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