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// File: BRepTools_Substitution.cxx
// Created: Tue Mar 28 09:54:41 1995
// Author: Yves FRICAUD
// <yfr@stylox>
#include <BRepTools_Substitution.ixx>
#include <TopoDS.hxx>
#include <TopoDS_Iterator.hxx>
#include <TopTools_DataMapIteratorOfDataMapOfShapeListOfShape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <BRep_Builder.hxx>
#include <Standard_ConstructionError.hxx>
#include <BRep_Tool.hxx>
//=======================================================================
//function : BRepTools_Substitution
//purpose :
//=======================================================================
BRepTools_Substitution::BRepTools_Substitution()
{}
//=======================================================================
//function : Clear
//purpose :
//=======================================================================
void BRepTools_Substitution::Clear()
{
myMap.Clear();
}
//=======================================================================
//function : Substitute
//purpose :
//=======================================================================
void BRepTools_Substitution::Substitute(const TopoDS_Shape& OS,
const TopTools_ListOfShape& NS)
{
Standard_ConstructionError_Raise_if
(IsCopied(OS),"BRepTools_CutClue::Substitute");
myMap.Bind(OS,NS);
}
//=======================================================================
//function : Build
//purpose :
//=======================================================================
void BRepTools_Substitution::Build(const TopoDS_Shape& S)
{
if (IsCopied(S)) return;
BRep_Builder B;
TopoDS_Iterator iteS (S.Oriented(TopAbs_FORWARD));
Standard_Boolean IsModified = Standard_False;
Standard_Boolean HasSubShape = Standard_False;
//------------------------------------------
// look S is modified and build subshapes.
//------------------------------------------
for (; iteS.More(); iteS.Next()) {
const TopoDS_Shape& SS = iteS.Value();
Build (SS);
if (IsCopied(SS)) {
IsModified = Standard_True;
}
}
TopoDS_Shape NewS = S.Oriented(TopAbs_FORWARD);
if (IsModified) {
//----------------------------------------
// Rebuild S.
//------------------------------------------
NewS.EmptyCopy();
if (NewS.ShapeType() == TopAbs_EDGE) {
Standard_Real f,l;
BRep_Tool::Range(TopoDS::Edge(S),f,l);
B.Range(TopoDS::Edge(NewS),f,l);
}
iteS.Initialize(S.Oriented(TopAbs_FORWARD));
//------------------------------------------
// Add the copy of subshapes of S to NewS.
//------------------------------------------
for ( ;iteS.More(); iteS.Next()) {
TopAbs_Orientation OS = iteS.Value().Orientation();
TopTools_ListOfShape L;
L = myMap(iteS.Value());
TopTools_ListIteratorOfListOfShape iteL(L);
for ( ; iteL.More(); iteL.Next()){
const TopoDS_Shape NSS = iteL.Value();
//------------------------------------------
// Rebuild NSS and add its copy to NewS.
//------------------------------------------
Build(NSS);
const TopTools_ListOfShape& NL = myMap(NSS);
TopAbs_Orientation NewOr = TopAbs::Compose(OS,NSS.Orientation());
TopTools_ListIteratorOfListOfShape iteNL(NL);
for ( ; iteNL.More(); iteNL.Next()){
B.Add (NewS,iteNL.Value().Oriented(NewOr));
HasSubShape = Standard_True;
}
}
}
if (!HasSubShape) {
if (NewS.ShapeType() == TopAbs_WIRE || NewS.ShapeType() == TopAbs_SHELL ||
NewS.ShapeType() == TopAbs_SOLID || NewS.ShapeType() == TopAbs_COMPOUND)
//----------------------------------------------------------------
// Wire,Solid,Shell,Compound mut have subshape else they disapear
//---------------------------------------------------------------
NewS.Nullify();
}
}
TopTools_ListOfShape L;
//-------------------------------------------------------
// NewS has the same orientation than S in its ancestors
// so NewS is bound with orientation FORWARD.
//-------------------------------------------------------
if (!NewS.IsNull()) L.Append(NewS.Oriented(TopAbs_FORWARD));
Substitute(S, L);
}
//=======================================================================
//function : IsCopied
//purpose :
//=======================================================================
Standard_Boolean BRepTools_Substitution::IsCopied(const TopoDS_Shape& S) const
{
if (myMap.IsBound(S)) {
if (myMap (S).IsEmpty()) return Standard_True;
else
return !S.IsSame(myMap(S).First());
}
else
return Standard_False;
}
//=======================================================================
//function : Copy
//purpose :
//=======================================================================
const TopTools_ListOfShape& BRepTools_Substitution::Copy (const TopoDS_Shape& S)
const
{
Standard_NoSuchObject_Raise_if(!IsCopied(S),"BRepTools_Substitution::Copy");
return myMap(S);
}
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