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// File: TopoDS_Builder.cxx
// Created: Tue Apr 9 18:25:03 1991
// Author: Remi LEQUETTE
#include <TopoDS_Builder.ixx>
#include <TopoDS_TShape.hxx>
#include <TopoDS_TWire.hxx>
#include <TopoDS_TCompound.hxx>
#include <TopoDS_ListIteratorOfListOfShape.hxx>
#include <TopoDS_FrozenShape.hxx>
#include <TopoDS_UnCompatibleShapes.hxx>
//=======================================================================
//function : MakeShape
//purpose : Make a Shape from a TShape
//=======================================================================
void TopoDS_Builder::MakeShape (TopoDS_Shape& S,
const Handle(TopoDS_TShape)& T) const
{
S.TShape(T);
S.Location(TopLoc_Location());
S.Orientation(TopAbs_FORWARD);
}
//=======================================================================
//function : Add
//purpose : insert aComponent in aShape
//=======================================================================
void TopoDS_Builder::Add (TopoDS_Shape& aShape,
const TopoDS_Shape& aComponent) const
{
// From now the Component cannot be edited
aComponent.TShape()->Free(Standard_False);
// Note that freezing aComponent before testing if aShape is free
// prevents from self-insertion
// but aShape will be frozen when the Exception is raised
if (aShape.Free())
{
static const unsigned int aTb[9]=
{
//COMPOUND to:
(1<<((unsigned int)TopAbs_COMPOUND)),
//COMPSOLID to:
(1<<((unsigned int)TopAbs_COMPOUND)),
//SOLID to:
(1<<((unsigned int)TopAbs_COMPOUND)) |
(1<<((unsigned int)TopAbs_COMPSOLID)),
//SHELL to:
(1<<((unsigned int)TopAbs_COMPOUND)) |
(1<<((unsigned int)TopAbs_SOLID)),
//FACE to:
(1<<((unsigned int)TopAbs_COMPOUND)) |
(1<<((unsigned int)TopAbs_SHELL)),
//WIRE to:
(1<<((unsigned int)TopAbs_COMPOUND)) |
(1<<((unsigned int)TopAbs_FACE)),
//EDGE to:
(1<<((unsigned int)TopAbs_COMPOUND)) |
(1<<((unsigned int)TopAbs_SOLID)) |
(1<<((unsigned int)TopAbs_WIRE)),
//VERTEX to:
(1<<((unsigned int)TopAbs_COMPOUND)) |
(1<<((unsigned int)TopAbs_SOLID)) |
(1<<((unsigned int)TopAbs_FACE)) |
(1<<((unsigned int)TopAbs_EDGE)),
//SHAPE to:
0
};
//
const unsigned int iC=(unsigned int)aComponent.ShapeType();
const unsigned int iS=(unsigned int)aShape.ShapeType();
//
if ((aTb[iC] & (1<<iS)) != 0) {
TopoDS_ListOfShape& L = aShape.TShape()->ChangeShapes();
L.Append(aComponent);
TopoDS_Shape& S = L.Last();
//
// compute the relative Orientation
if (aShape.Orientation() == TopAbs_REVERSED)
S.Reverse();
//
// and the Relative Location
const TopLoc_Location& aLoc=aShape.Location();
if (!aLoc.IsIdentity())
S.Move(aLoc.Inverted());
//
// Set the TShape as modified.
aShape.TShape()->Modified(Standard_True);
}
else {
TopoDS_UnCompatibleShapes::Raise("TopoDS_Builder::Add");
}
}
else {
TopoDS_FrozenShape::Raise("TopoDS_Buider::Add");
}
}
//=======================================================================
//function : Remove
//purpose : Remove a Shape from an other one
//=======================================================================
void TopoDS_Builder::Remove (TopoDS_Shape& aShape,
const TopoDS_Shape& aComponent) const
{
// check if aShape is not Frozen
TopoDS_FrozenShape_Raise_if (!aShape.Free(),"TopoDS_Builder::Remove");
// compute the relative Orientation and Location of aComponent
TopoDS_Shape S = aComponent;
if (aShape.Orientation() == TopAbs_REVERSED)
S.Reverse();
S.Location(S.Location().Predivided(aShape.Location()));
TopoDS_ListOfShape& L = aShape.TShape()->ChangeShapes();
TopoDS_ListIteratorOfListOfShape It(L);
while (It.More()) {
if (It.Value() == S) {
L.Remove(It);
aShape.TShape()->Modified(Standard_True);
break;
}
It.Next();
}
}
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