0024023: Revamp the OCCT Handle -- downcast (automatic)
[occt.git] / src / StepToGeom / StepToGeom_MakeSurface.cxx
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b311480e 1// Created on: 1993-07-05
2// Created by: Martine LANGLOIS
3// Copyright (c) 1993-1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 8// This library is free software; you can redistribute it and/or modify it under
9// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 10// by the Free Software Foundation, with special exception defined in the file
11// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12// distribution for complete text of the license and disclaimer of any warranty.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
b311480e 16
7fd59977 17//:n7 abv 15.02.99: S4132: adding translation of surface_replica
18//:p0 abv 19.02.99: management of 'done' flag improved
19//:s5 abv 22.04.99 Adding debug printouts in catch {} blocks
20//sln 03.10.01. BUC61003. creation of offset surface is corrected
21
22#include <StepToGeom_MakeSurface.ixx>
23#include <Standard_ErrorHandler.hxx>
24#include <Standard_Failure.hxx>
25#include <StepGeom_Surface.hxx>
26#include <StepToGeom_MakeSurface.hxx>
27#include <StepGeom_BoundedSurface.hxx>
28#include <StepToGeom_MakeBoundedSurface.hxx>
29#include <StepGeom_ElementarySurface.hxx>
30#include <StepToGeom_MakeElementarySurface.hxx>
31#include <StepGeom_SweptSurface.hxx>
32#include <StepToGeom_MakeSweptSurface.hxx>
33
34//:d4
35#include <StepGeom_OffsetSurface.hxx>
36#include <Geom_OffsetSurface.hxx>
37#include <StepGeom_SurfaceReplica.hxx>
38#include <StepGeom_CartesianTransformationOperator3d.hxx>
39#include <StepToGeom_MakeTransformation3d.hxx>
40#include <UnitsMethods.hxx>
b311480e 41
7fd59977 42#include <BRepBuilderAPI_MakeFace.hxx>
43#include <TopoDS_Face.hxx>
44#include <ShapeAlgo.hxx>
45#include <ShapeAlgo_AlgoContainer.hxx>
46#include <TopoDS.hxx>
47#include <BRep_Tool.hxx>
48#include <gp_Trsf.hxx>
1c72dff6 49#include <Precision.hxx>
7fd59977 50
51//=============================================================================
52// Creation d' une Surface de Geom a partir d' une Surface de Step
53//=============================================================================
54
55Standard_Boolean StepToGeom_MakeSurface::Convert (const Handle(StepGeom_Surface)& SS, Handle(Geom_Surface)& CS)
56{
57 // sln 01.10.2001 BUC61003. If entry shell is NULL do nothing
58 if(SS.IsNull()) {
7fd59977 59 return Standard_False;
60 }
61
62 try {
63 OCC_CATCH_SIGNALS
64 if (SS->IsKind(STANDARD_TYPE(StepGeom_BoundedSurface))) {
65 const Handle(StepGeom_BoundedSurface) S1 = Handle(StepGeom_BoundedSurface)::DownCast(SS);
c5f3a425 66 return StepToGeom_MakeBoundedSurface::Convert(S1,Handle(Geom_BoundedSurface)::DownCast (CS));
7fd59977 67 }
68 if (SS->IsKind(STANDARD_TYPE(StepGeom_ElementarySurface))) {
69 const Handle(StepGeom_ElementarySurface) S1 = Handle(StepGeom_ElementarySurface)::DownCast(SS);
9e20ed57 70 if(S1->Position().IsNull())
71 return Standard_False;
72
c5f3a425 73 return StepToGeom_MakeElementarySurface::Convert(S1,Handle(Geom_ElementarySurface)::DownCast (CS));
7fd59977 74 }
75 if (SS->IsKind(STANDARD_TYPE(StepGeom_SweptSurface))) {
76 const Handle(StepGeom_SweptSurface) S1 = Handle(StepGeom_SweptSurface)::DownCast(SS);
c5f3a425 77 return StepToGeom_MakeSweptSurface::Convert(S1,Handle(Geom_SweptSurface)::DownCast (CS));
7fd59977 78 }
79 if (SS->IsKind(STANDARD_TYPE(StepGeom_OffsetSurface))) { //:d4 abv 12 Mar 98
80 const Handle(StepGeom_OffsetSurface) OS = Handle(StepGeom_OffsetSurface)::DownCast(SS);
81 Handle(Geom_Surface) aBasisSurface;
82 if (StepToGeom_MakeSurface::Convert(OS->BasisSurface(),aBasisSurface))
83 {
84 // sln 03.10.01. BUC61003. creation of offset surface is corrected
85 const Standard_Real anOffset = OS->Distance() * UnitsMethods::LengthFactor();
86 if (aBasisSurface->Continuity() == GeomAbs_C0)
87 {
1c72dff6 88 const BRepBuilderAPI_MakeFace aBFace(aBasisSurface, Precision::Confusion());
7fd59977 89 if (aBFace.IsDone())
90 {
91 const TopoDS_Shape aResult = ShapeAlgo::AlgoContainer()->C0ShapeToC1Shape(aBFace.Face(), Abs(anOffset));
92 if (aResult.ShapeType() == TopAbs_FACE)
93 {
94 aBasisSurface = BRep_Tool::Surface(TopoDS::Face(aResult));
95 }
96 }
97 }
98 if(aBasisSurface->Continuity() != GeomAbs_C0)
99 {
100 CS = new Geom_OffsetSurface ( aBasisSurface, anOffset );
101 return Standard_True;
102 }
103 }
104 }
105 else if (SS->IsKind(STANDARD_TYPE(StepGeom_SurfaceReplica))) { //:n7 abv 16 Feb 99
106 const Handle(StepGeom_SurfaceReplica) SR = Handle(StepGeom_SurfaceReplica)::DownCast(SS);
107 const Handle(StepGeom_Surface) PS = SR->ParentSurface();
108 const Handle(StepGeom_CartesianTransformationOperator3d) T =
109 Handle(StepGeom_CartesianTransformationOperator3d)::DownCast(SR->Transformation());
110 // protect against cyclic references and wrong type of cartop
111 if ( !T.IsNull() && PS != SS ) {
112 Handle(Geom_Surface) S1;
113 if (StepToGeom_MakeSurface::Convert(PS,S1))
114 {
115 gp_Trsf T1;
116 if (StepToGeom_MakeTransformation3d::Convert(T,T1))
117 {
118 S1->Transform ( T1 );
119 CS = S1;
120 return Standard_True;
121 }
122 }
123 }
124 }
125 }
126 catch(Standard_Failure) {
127// ShapeTool_DB ?
0797d9d3 128#ifdef OCCT_DEBUG //:s5
7fd59977 129 cout<<"Warning: StepToGeom_MakeSurface: Exception:";
130 Standard_Failure::Caught()->Print(cout); cout << endl;
131#endif
132 }
133 return Standard_False;
134}