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Public Member Functions
GccAna_Circ2dTanOnRad Class Reference

This class implements the algorithms used to
create a 2d circle tangent to a 2d entity,
centered on a curv and with a given radius.
The arguments of all construction methods are :
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#include <GccAna_Circ2dTanOnRad.hxx>

Public Member Functions

DEFINE_STANDARD_ALLOC GccAna_Circ2dTanOnRad (const GccEnt_QualifiedCirc &Qualified1, const gp_Lin2d &OnLine, const Standard_Real Radius, const Standard_Real Tolerance)
 This methods implements the algorithms used to create
2d Circles tangent to a circle and centered on a 2d Line
with a given radius.
Tolerance is used to find solution in every limit cases.
For example Tolerance is used in the case of EnclosedCirc when
Radius-R1+dist is greater Tolerance (dist is the distance
between the line and the location of the circ, R1 is the
radius of the circ) because there is no solution.
//! raises NegativeValue in case of NegativeRadius.

 GccAna_Circ2dTanOnRad (const GccEnt_QualifiedLin &Qualified1, const gp_Lin2d &OnLine, const Standard_Real Radius, const Standard_Real Tolerance)
 This methods implements the algorithms used to create
2d Circles tangent to a 2d Line and centered on a 2d Line
with a given radius.
Tolerance is used to find solution in every limit cases.
//! raises NegativeValue in case of NegativeRadius.

 GccAna_Circ2dTanOnRad (const gp_Pnt2d &Point1, const gp_Lin2d &OnLine, const Standard_Real Radius, const Standard_Real Tolerance)
 This methods implements the algorithms used to create
2d Circles passing through a 2d Point and centered on a
2d Line with a given radius.
Tolerance is used to find solution in every limit cases.

 GccAna_Circ2dTanOnRad (const GccEnt_QualifiedCirc &Qualified1, const gp_Circ2d &OnCirc, const Standard_Real Radius, const Standard_Real Tolerance)
 This methods implements the algorithms used to create
2d Circles tangent to a circle and centered on a 2d Circle
with a given radius.
Tolerance is used to find solution in every limit cases.
//! raises NegativeValue in case of NegativeRadius.

 GccAna_Circ2dTanOnRad (const GccEnt_QualifiedLin &Qualified1, const gp_Circ2d &OnCirc, const Standard_Real Radius, const Standard_Real Tolerance)
 This methods implements the algorithms used to create
2d Circles tangent to a 2d Line and centered on a 2d Line
with a given radius.
Tolerance is used to find solution in every limit cases.
//! raises NegativeValue in case of NegativeRadius.

 GccAna_Circ2dTanOnRad (const gp_Pnt2d &Point1, const gp_Circ2d &OnCirc, const Standard_Real Radius, const Standard_Real Tolerance)
 This methods implements the algorithms used to create
2d Circles passing through a 2d Point and centered on a
2d Line with a given radius.
Tolerance is used to find solution in every limit cases.
//! raises NegativeValue in case of NegativeRadius.

Standard_Boolean IsDone () const
 Returns true if the construction algorithm does not fail
(even if it finds no solution).
Note: IsDone protects against a failure arising from a
more internal intersection algorithm, which has
reached its numeric limits.

Standard_Integer NbSolutions () const
 This method returns the number of circles, representing solutions.
Raises NotDone if the construction algorithm didn't succeed.

gp_Circ2d ThisSolution (const Standard_Integer Index) const
 Returns the solution number Index and raises OutOfRange
exception if Index is greater than the number of solutions.
Be careful: the Index is only a way to get all the
solutions, but is not associated to theses outside the
context of the algorithm-object.
Raises NotDone if the construction algorithm didn't succeed.
It raises OutOfRange if Index is greater than the
number of solutions

void WhichQualifier (const Standard_Integer Index, GccEnt_Position &Qualif1) const
 Returns the qualifier Qualif1 of the tangency argument
for the solution of index Index computed by this algorithm.
The returned qualifier is:

void Tangency1 (const Standard_Integer Index, Standard_Real &ParSol, Standard_Real &ParArg, gp_Pnt2d &PntSol) const
 Returns informations about the tangency point between the
result number Index and the first argument.
ParSol is the intrinsic parameter of the point on the
solution curv.
ParArg is the intrinsic parameter of the point on the
argument curv.
PntSol is the tangency point on the solution curv.
PntArg is the tangency point on the argument curv.
Raises NotDone if the construction algorithm didn't succeed.
It raises OutOfRange if Index is greater than the
number of solutions.

void CenterOn3 (const Standard_Integer Index, Standard_Real &ParArg, gp_Pnt2d &PntSol) const
 Returns informations about the center (on the curv)
of the result.
ParArg is the intrinsic parameter of the point on
the argument curv.
PntSol is the center point of the solution curv.
Raises NotDone if the construction algorithm didn't succeed.
It raises OutOfRange if Index is greater than the
number of solutions.

Standard_Boolean IsTheSame1 (const Standard_Integer Index) const
 Returns True if the solution number Index is equal to
the first argument and False in the other cases.
Raises NotDone if the construction algorithm didn't succeed.
It raises OutOfRange if Index is greater than the
number of solutions.


Detailed Description


Constructor & Destructor Documentation


Member Function Documentation

void GccAna_Circ2dTanOnRad::Tangency1 ( const Standard_Integer  Index,
Standard_Real ParSol,
Standard_Real ParArg,
gp_Pnt2d PntSol 
) const
  • that specified at the start of construction when the
    solutions are defined as enclosed, enclosing or
    outside with respect to the argument, or
  • that computed during construction (i.e. enclosed,
    enclosing or outside) when the solutions are defined
    as unqualified with respect to the argument, or
  • GccEnt_noqualifier if the tangency argument is a point.
    Exceptions
    Standard_OutOfRange if Index is less than zero or
    greater than the number of solutions computed by this algorithm.
    StdFail_NotDone if the construction fails.

The documentation for this class was generated from the following file: