Open CASCADE Technology
7.1.0.beta

This class implements the algorithms used to create 2d line tangent to a curve QualifiedCurv and doing an angle Angle with a line TheLin. The angle must be in Radian. Describes functions for building a 2D line making a given angle with a line and tangential to a curve. A Lin2dTanObl object provides a framework for: More...
#include <Geom2dGcc_Lin2dTanObl.hxx>
Public Member Functions  
Geom2dGcc_Lin2dTanObl (const Geom2dGcc_QualifiedCurve &Qualified1, const gp_Lin2d &TheLin, const Standard_Real TolAng, const Standard_Real Angle)  
This class implements the algorithm used to create 2d line tangent to a curve and doing an angle Angle with the line TheLin. Angle must be in Radian. Tolang is the angular tolerance. More...  
Geom2dGcc_Lin2dTanObl (const Geom2dGcc_QualifiedCurve &Qualified1, const gp_Lin2d &TheLin, const Standard_Real TolAng, const Standard_Real Param1, const Standard_Real Angle)  
This class implements the algorithm used to create 2d line tangent to a curve and doing an angle Angle with the line TheLin. Angle must be in Radian. Param2 is the initial guess on the curve QualifiedCurv. Tolang is the angular tolerance. Warning An iterative algorithm is used if Qualified1 is more complex than a line or a circle. In such cases, the algorithm constructs only one solution. Exceptions GccEnt_BadQualifier if a qualifier is inconsistent with the argument it qualifies (for example, enclosed for a circle). More...  
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. More...  
Standard_Integer  NbSolutions () const 
Returns the number of lines, representing solutions computed by this algorithm. Exceptions StdFail_NotDone if the construction fails. More...  
gp_Lin2d  ThisSolution (const Standard_Integer Index) const 
Returns a line, representing the solution of index Index computed by this algorithm. 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. 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 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 PntSol on the argument curv. More...  
void  Intersection2 (const Standard_Integer Index, Standard_Real &ParSol, Standard_Real &ParArg, gp_Pnt2d &PntSol) const 
Returns the point of intersection PntSol between the solution of index Index and the second argument (the line) of this algorithm. ParSol is the parameter of the point PntSol on the solution. ParArg is the parameter of the point PntSol on the second argument (the line). Exceptions StdFail_NotDone if the construction fails. Geom2dGcc_IsParallel if the solution and the second argument (the line) are parallel. Standard_OutOfRange if Index is less than zero or greater than the number of solutions computed by this algorithm. More...  
Standard_Boolean  IsParallel2 () const 
Returns true if the line and the solution are parallel. This is the case when the angle given at the time of construction is equal to 0 or Pi. Exceptions StdFail_NotDone if the construction fails. More...  
This class implements the algorithms used to create 2d line tangent to a curve QualifiedCurv and doing an angle Angle with a line TheLin. The angle must be in Radian. Describes functions for building a 2D line making a given angle with a line and tangential to a curve. A Lin2dTanObl object provides a framework for:
Geom2dGcc_Lin2dTanObl::Geom2dGcc_Lin2dTanObl  (  const Geom2dGcc_QualifiedCurve &  Qualified1, 
const gp_Lin2d &  TheLin,  
const Standard_Real  TolAng,  
const Standard_Real  Angle  
) 
This class implements the algorithm used to create 2d line tangent to a curve and doing an angle Angle with the line TheLin. Angle must be in Radian. Tolang is the angular tolerance.
Geom2dGcc_Lin2dTanObl::Geom2dGcc_Lin2dTanObl  (  const Geom2dGcc_QualifiedCurve &  Qualified1, 
const gp_Lin2d &  TheLin,  
const Standard_Real  TolAng,  
const Standard_Real  Param1,  
const Standard_Real  Angle  
) 
This class implements the algorithm used to create 2d line tangent to a curve and doing an angle Angle with the line TheLin. Angle must be in Radian. Param2 is the initial guess on the curve QualifiedCurv. Tolang is the angular tolerance. Warning An iterative algorithm is used if Qualified1 is more complex than a line or a circle. In such cases, the algorithm constructs only one solution. Exceptions GccEnt_BadQualifier if a qualifier is inconsistent with the argument it qualifies (for example, enclosed for a circle).
void Geom2dGcc_Lin2dTanObl::Intersection2  (  const Standard_Integer  Index, 
Standard_Real &  ParSol,  
Standard_Real &  ParArg,  
gp_Pnt2d &  PntSol  
)  const 
Returns the point of intersection PntSol between the solution of index Index and the second argument (the line) of this algorithm. ParSol is the parameter of the point PntSol on the solution. ParArg is the parameter of the point PntSol on the second argument (the line). Exceptions StdFail_NotDone if the construction fails. Geom2dGcc_IsParallel if the solution and the second argument (the line) are parallel. Standard_OutOfRange if Index is less than zero or greater than the number of solutions computed by this algorithm.
Standard_Boolean Geom2dGcc_Lin2dTanObl::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_Boolean Geom2dGcc_Lin2dTanObl::IsParallel2  (  )  const 
Returns true if the line and the solution are parallel. This is the case when the angle given at the time of construction is equal to 0 or Pi. Exceptions StdFail_NotDone if the construction fails.
Standard_Integer Geom2dGcc_Lin2dTanObl::NbSolutions  (  )  const 
Returns the number of lines, representing solutions computed by this algorithm. Exceptions StdFail_NotDone if the construction fails.
void Geom2dGcc_Lin2dTanObl::Tangency1  (  const Standard_Integer  Index, 
Standard_Real &  ParSol,  
Standard_Real &  ParArg,  
gp_Pnt2d &  PntSol  
)  const 
Returns informations about the tangency point between the result 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 PntSol on the argument curv.
gp_Lin2d Geom2dGcc_Lin2dTanObl::ThisSolution  (  const Standard_Integer  Index  )  const 
Returns a line, representing the solution of index Index computed by this algorithm. 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.
void Geom2dGcc_Lin2dTanObl::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: