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Foundation Classes - TopoDS_Shape accept scaling by default #239

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Refactor Location and Move methods to validate transformations.
New default value to raise exception is false.
This commit is contained in:
dpasukhi 2025-01-04 22:28:01 +00:00
parent a4443d74ad
commit 9687f7369c
1 changed files with 35 additions and 19 deletions
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54
src/TopoDS/TopoDS_Shape.hxx
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@ -85,23 +85,24 @@ public:
const TopLoc_Location& Location() const { return myLocation; }
//! Sets the shape local coordinate system.
void Location (const TopLoc_Location& theLoc, const Standard_Boolean theRaiseExc = Standard_True)
//! @param theLoc the new local coordinate system.
//! @param theRaiseExc flag to raise exception in case of transformation with scale or negative.
void Location (const TopLoc_Location& theLoc, const Standard_Boolean theRaiseExc = Standard_False)
{
const gp_Trsf& aTrsf = theLoc.Transformation();
if ((Abs(Abs(aTrsf.ScaleFactor()) - 1.) > TopLoc_Location::ScalePrec() || aTrsf.IsNegative()) && theRaiseExc)
if (theRaiseExc)
{
//Exception
throw Standard_DomainError("Location with scaling transformation is forbidden");
}
else
{
myLocation = theLoc;
validateTransformation(aTrsf);
}
myLocation = theLoc;
}
//! Returns a shape similar to <me> with the local
//! Returns a shape similar to <me> with the local
//! coordinate system set to <Loc>.
TopoDS_Shape Located (const TopLoc_Location& theLoc, const Standard_Boolean theRaiseExc = Standard_True) const
//! @param theLoc the new local coordinate system.
//! @param theRaiseExc flag to raise exception in case of transformation with scale or negative.
//! @return the located shape.
TopoDS_Shape Located (const TopLoc_Location& theLoc, const Standard_Boolean theRaiseExc = Standard_False) const
{
TopoDS_Shape aShape (*this);
aShape.Location (theLoc, theRaiseExc);
@ -182,22 +183,23 @@ public:
void Convex (Standard_Boolean theIsConvex) { myTShape->Convex (theIsConvex); }
//! Multiplies the Shape location by thePosition.
void Move(const TopLoc_Location& thePosition, const Standard_Boolean theRaiseExc = Standard_True)
//! @param thePosition the transformation to apply.
//! @param theRaiseExc flag to raise exception in case of transformation with scale or negative.
void Move(const TopLoc_Location& thePosition, const Standard_Boolean theRaiseExc = Standard_False)
{
const gp_Trsf& aTrsf = thePosition.Transformation();
if ((Abs(Abs(aTrsf.ScaleFactor()) - 1.) > TopLoc_Location::ScalePrec() || aTrsf.IsNegative()) && theRaiseExc)
if (theRaiseExc)
{
//Exception
throw Standard_DomainError("Moving with scaling transformation is forbidden");
}
else
{
myLocation = thePosition * myLocation;
validateTransformation(aTrsf);
}
myLocation = thePosition * myLocation;
}
//! Returns a shape similar to <me> with a location multiplied by thePosition.
TopoDS_Shape Moved (const TopLoc_Location& thePosition, const Standard_Boolean theRaiseExc = Standard_True) const
//! @param thePosition the transformation to apply.
//! @param theRaiseExc flag to raise exception in case of transformation with scale or negative.
//! @return the moved shape.
TopoDS_Shape Moved (const TopLoc_Location& thePosition, const Standard_Boolean theRaiseExc = Standard_False) const
{
TopoDS_Shape aShape (*this);
aShape.Move (thePosition, theRaiseExc);
@ -300,6 +302,20 @@ public:
//! Dumps the content of me into the stream
Standard_EXPORT void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const;
protected:
//! Checks if the transformation contains scaling or negative values.
//! Raises an exception if the transformation is invalid.
//! @param theTrsf transformation to validate
void validateTransformation(const gp_Trsf& theTrsf) const
{
if (Abs(Abs(theTrsf.ScaleFactor()) - 1.) > TopLoc_Location::ScalePrec() || theTrsf.IsNegative())
{
//Exception
throw Standard_DomainError("Transformation with scaling transformation is forbidden");
}
}
private:
Handle(TopoDS_TShape) myTShape;