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//:l8 abv 15.01.99: CTS22022: writing correct pcurves for indirect tori
//:p5 abv 26.02.99: PRO18207: force copying of edge if any its pcurve is to be replaced
//szv#4 S4163
//S4181 pdn 20.04.99 Modification of indirect rectangular trimming surfaces and taking
// locations into account
//szv 03.01.01 PositiveCones merged in
#include <ShapeCustom_DirectModification.ixx>
#include <gp_Mat.hxx>
#include <Geom_ConicalSurface.hxx>
#include <Geom_ElementarySurface.hxx>
#include <Geom_RectangularTrimmedSurface.hxx>
#include <Precision.hxx>
#include <TopoDS.hxx>
#include <BRep_Builder.hxx>
#include <BRep_Tool.hxx>
#include <BRepTools.hxx>
#include <BRep_TEdge.hxx>
#include <BRep_ListIteratorOfListOfCurveRepresentation.hxx>
#include <BRep_GCurve.hxx>
//=======================================================================
//function : ShapeCustom_DirectModification
//purpose :
//=======================================================================
ShapeCustom_DirectModification::ShapeCustom_DirectModification()
{
}
//S4181 returns 0 - none, 1 - indirect, 2 - negative cone, 3 - indirect negative cone
static Standard_Integer IsIndirectSurface (Handle(Geom_Surface) &S,
TopLoc_Location &L)
{
Standard_Integer result = 0;
Handle(Geom_Surface) TS = S;
while (TS->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface)))
TS = Handle(Geom_RectangularTrimmedSurface)::DownCast(TS)->BasisSurface();
Handle(Geom_ElementarySurface) ES = Handle(Geom_ElementarySurface)::DownCast(TS);
if (!ES.IsNull()) {
// is the surface indirect ?
gp_Trsf t = L.Transformation();
Standard_Boolean neg = t.IsNegative();
Standard_Boolean det = ( t.VectorialPart().Determinant() < 0.0 );
Standard_Boolean dir = ES->Position().Direct();
if ( (Standard_Boolean)( neg != det ) == dir ) result = 1;
Handle(Geom_ConicalSurface) CS = Handle(Geom_ConicalSurface)::DownCast(ES);
if (!CS.IsNull()) {
// does the cone have negative semiangle ?
if ( CS->SemiAngle() < 0.0 ) result += 2;
}
if (result) S = TS;
}
return result;
}
//=======================================================================
//function : NewSurface
//purpose :
//=======================================================================
Standard_Boolean ShapeCustom_DirectModification::NewSurface (const TopoDS_Face& F,
Handle(Geom_Surface)& S,
TopLoc_Location& L,
Standard_Real& Tol,
Standard_Boolean& RevWires,
Standard_Boolean& RevFace)
{
S = BRep_Tool::Surface(F,L);
switch (IsIndirectSurface(S,L)) {
case 1: { // Indirect surface
// UReverse a copy of S
S = S->UReversed();
RevWires = Standard_True;
RevFace = Standard_True;
break;
}
case 2: { // Negative cone
// U- and VReverse a copy of S
S = S->VReversed();
S->UReverse();
RevWires = Standard_False;
RevFace = Standard_False;
break;
}
case 3: { // Indirect negative cone
// VReverse a copy of S
S = S->VReversed();
RevWires = Standard_True;
RevFace = Standard_True;
break;
}
default: return Standard_False;
}
Tol = BRep_Tool::Tolerance(F);
return Standard_True;
}
//=======================================================================
//function : NewCurve
//purpose :
//=======================================================================
Standard_Boolean ShapeCustom_DirectModification::NewCurve (const TopoDS_Edge& E,
Handle(Geom_Curve)& C,
TopLoc_Location& L,
Standard_Real& Tol)
{
//:p5 abv 26 Feb 99: force copying of edge if any its pcurve will be replaced
Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&E.TShape());
// iterate on pcurves
BRep_ListIteratorOfListOfCurveRepresentation itcr(TE->Curves());
for ( ; itcr.More(); itcr.Next() ) {
Handle(BRep_GCurve) GC = Handle(BRep_GCurve)::DownCast(itcr.Value());
if ( GC.IsNull() || ! GC->IsCurveOnSurface() ) continue;
Handle(Geom_Surface) S = GC->Surface();
TopLoc_Location Loc = GC->Location();
if ( ! IsIndirectSurface ( S, Loc ) ) continue;
Standard_Real f, l;
C = BRep_Tool::Curve ( E, L, f, l );
if ( ! C.IsNull() ) C = Handle(Geom_Curve)::DownCast ( C->Copy() );
Tol = BRep_Tool::Tolerance(E);
return Standard_True;
}
return Standard_False;
}
//=======================================================================
//function : NewPoint
//purpose :
//=======================================================================
Standard_Boolean ShapeCustom_DirectModification::NewPoint (const TopoDS_Vertex& /*V*/,
gp_Pnt& /*P*/,
Standard_Real& /*Tol*/)
{
// 3d points are never modified
return Standard_False;
}
//=======================================================================
//function : NewCurve2d
//purpose :
//=======================================================================
Standard_Boolean ShapeCustom_DirectModification::NewCurve2d (const TopoDS_Edge& E,
const TopoDS_Face& F,
const TopoDS_Edge& NewE,
const TopoDS_Face& NewF,
Handle(Geom2d_Curve)& C,
Standard_Real& Tol)
{
TopLoc_Location L;
Handle(Geom_Surface) S = BRep_Tool::Surface(F,L);
Standard_Integer result = IsIndirectSurface ( S, L );
if ( !result && E.IsSame(NewE) ) return Standard_False;
Standard_Real f, l;
C = BRep_Tool::CurveOnSurface( E, F, f, l );
Tol = BRep_Tool::Tolerance(E);
if ( result ) {
gp_Trsf2d T;
switch (result) {
case 1: { // Indirect surface
// mirror the PCurve about the V axis
T.SetMirror(gp::OY2d());
C = Handle(Geom2d_Curve)::DownCast(C->Transformed(T));
break;
}
case 2: { // Negative cone
// mirror the PCurve about the U and V axis
T.SetMirror(gp::OX2d());
C = Handle(Geom2d_Curve)::DownCast(C->Transformed(T));
T.SetMirror(gp::OY2d());
C->Transform(T);
break;
}
case 3: { // Indirect negative cone
// mirror the PCurve about the U axis
T.SetMirror(gp::OX2d());
C = Handle(Geom2d_Curve)::DownCast(C->Transformed(T));
break;
}
}
//#26 rln When seam edge contains triangulations trimming is lost by BRep_Builder::UpdateEdge
if (BRepTools::IsReallyClosed (E, F)) {
//szv#4:S4163:12Mar99 SGI warning
TopoDS_Shape sh = NewE.Reversed();
Handle(Geom2d_Curve) tmp = BRep_Tool::CurveOnSurface( TopoDS::Edge(sh), NewF, f, l );
if (tmp.IsNull()) {
tmp = BRep_Tool::CurveOnSurface (E, F, f, l);
BRep_Builder B;
B.UpdateEdge (NewE, tmp, C, NewF, Tol);
B.Range (NewE, NewF, f, l);
//anyway, tmp will be removed later by BRepTools_Modifier
}
}
}
else {
//:p5 abv 26 Feb 99: force copying of pcurves if edge was copied
if ( ! C.IsNull() ) C = Handle(Geom2d_Curve)::DownCast ( C->Copy() );
}
return Standard_True;
}
//=======================================================================
//function : NewParameter
//purpose :
//=======================================================================
Standard_Boolean ShapeCustom_DirectModification::NewParameter (const TopoDS_Vertex& /*V*/,
const TopoDS_Edge& /*E*/,
Standard_Real& /*P*/,
Standard_Real& /*Tol*/)
{
return Standard_False;
}
//=======================================================================
//function : Continuity
//purpose :
//=======================================================================
GeomAbs_Shape ShapeCustom_DirectModification::Continuity (const TopoDS_Edge& E,
const TopoDS_Face& F1,
const TopoDS_Face& F2,
const TopoDS_Edge& /*NewE*/,
const TopoDS_Face& /*NewF1*/,
const TopoDS_Face& /*NewF2*/)
{
return BRep_Tool::Continuity(E,F1,F2);
}
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