Open CASCADE Technology
7.1.0.beta

This class implements the algorithms used to create 2d circles tangent to an entity and centered on a point. The arguments of all construction methods are : More...
#include <GccAna_Circ2dTanCen.hxx>
Public Member Functions  
GccAna_Circ2dTanCen (const GccEnt_QualifiedCirc &Qualified1, const gp_Pnt2d &Pcenter, const Standard_Real Tolerance)  
This method implements the algorithms used to create 2d circles tangent to a circle and centered on a point. More...  
GccAna_Circ2dTanCen (const gp_Lin2d &Linetan, const gp_Pnt2d &Pcenter)  
This method implements the algorithms used to create 2d circles tangent to a line and centered on a point. More...  
GccAna_Circ2dTanCen (const gp_Pnt2d &Point1, const gp_Pnt2d &Pcenter)  
This method implements the algorithms used to create 2d circles passing thrue a point and centered on a point. Tolerance is a tolerance criterion used by the algorithm to find a solution when, mathematically, the problem posed does not have a solution, but where there is numeric uncertainty attached to the arguments. In these algorithms Tolerance is only used in very specific cases where the center of the solution is very close to the circle to which it is tangential, and where the solution is therefore a very small circle. Exceptions GccEnt_BadQualifier if a qualifier is inconsistent with the argument it qualifies (for example, enclosing for a line). More...  
Standard_Boolean  IsDone () const 
This method returns True if the construction algorithm succeeded. Note: IsDone protects against a failure arising from a more internal intersection algorithm, which has reached its numeric limits. More...  
Standard_Integer  NbSolutions () const 
Returns the number of circles, representing solutions computed by this algorithm and raises NotDone exception if the algorithm didn't succeed. More...  
gp_Circ2d  ThisSolution (const Standard_Integer Index) const 
Returns the circle, representing the solution number Index and raises OutOfRange exception if Index is greater than the number of solutions. Be carefull: the Index is only a way to get all the solutions, but is not associated to theses outside the context of the algorithmobject. Raises NotDone if the construction algorithm didn't succeed. It raises OutOfRange if Index is greater than the number of solutions or less than zer. More...  
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: More...  
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 PntSol on the solution curv. ParArg is the intrinsic parameter of the point PntArg on the argument curv. It raises NotDone if the construction algorithm didn't succeed. It raises OutOfRange if Index is greater than the number of solutions or less than zero. More...  
Standard_Boolean  IsTheSame1 (const Standard_Integer Index) const 
Returns True if the solution number Index is equal to the first argument. It raises NotDone if the construction algorithm didn't succeed. It raises OutOfRange if Index is greater than the number of solutions or less than zero. More...  
This class implements the algorithms used to create 2d circles tangent to an entity and centered on a point. The arguments of all construction methods are :
GccAna_Circ2dTanCen::GccAna_Circ2dTanCen  (  const GccEnt_QualifiedCirc &  Qualified1, 
const gp_Pnt2d &  Pcenter,  
const Standard_Real  Tolerance  
) 
This method implements the algorithms used to create 2d circles tangent to a circle and centered on a point.
This method implements the algorithms used to create 2d circles tangent to a line and centered on a point.
This method implements the algorithms used to create 2d circles passing thrue a point and centered on a point. Tolerance is a tolerance criterion used by the algorithm to find a solution when, mathematically, the problem posed does not have a solution, but where there is numeric uncertainty attached to the arguments. In these algorithms Tolerance is only used in very specific cases where the center of the solution is very close to the circle to which it is tangential, and where the solution is therefore a very small circle. Exceptions GccEnt_BadQualifier if a qualifier is inconsistent with the argument it qualifies (for example, enclosing for a line).
Standard_Boolean GccAna_Circ2dTanCen::IsDone  (  )  const 
This method returns True if the construction algorithm succeeded. Note: IsDone protects against a failure arising from a more internal intersection algorithm, which has reached its numeric limits.
Standard_Boolean GccAna_Circ2dTanCen::IsTheSame1  (  const Standard_Integer  Index  )  const 
Returns True if the solution number Index is equal to the first argument. It raises NotDone if the construction algorithm didn't succeed. It raises OutOfRange if Index is greater than the number of solutions or less than zero.
Standard_Integer GccAna_Circ2dTanCen::NbSolutions  (  )  const 
Returns the number of circles, representing solutions computed by this algorithm and raises NotDone exception if the algorithm didn't succeed.
void GccAna_Circ2dTanCen::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 PntSol on the solution curv. ParArg is the intrinsic parameter of the point PntArg on the argument curv. It raises NotDone if the construction algorithm didn't succeed. It raises OutOfRange if Index is greater than the number of solutions or less than zero.
gp_Circ2d GccAna_Circ2dTanCen::ThisSolution  (  const Standard_Integer  Index  )  const 
Returns the circle, representing the solution number Index and raises OutOfRange exception if Index is greater than the number of solutions. Be carefull: the Index is only a way to get all the solutions, but is not associated to theses outside the context of the algorithmobject. Raises NotDone if the construction algorithm didn't succeed. It raises OutOfRange if Index is greater than the number of solutions or less than zer.
void GccAna_Circ2dTanCen::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: