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-- File: Lin2dTanObl.cdl
-- Created: Tue Oct 20 16:24:34 1992
-- Author: Remi GILET
-- <reg@sdsun1>
---Copyright: Matra Datavision 1992
class Lin2dTanObl from Geom2dGcc
---Purpose: 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:
-- - defining the construction of 2D line(s),
-- - implementing the construction algorithm, and
-- - consulting the result(s).
-- inherits Entity from Standard
uses Lin2d from gp,
Pnt2d from gp,
Array1OfInteger from TColStd,
Array1OfReal from TColStd,
Array1OfPnt2d from TColgp,
Array1OfLin2d from TColgp,
QualifiedCurve from Geom2dGcc,
Position from GccEnt,
Array1OfPosition from GccEnt,
Curve from Geom2dAdaptor,
MyL2dTanObl from Geom2dGcc
raises BadQualifier from GccEnt,
NotDone from StdFail,
IsParallel from GccIter,
OutOfRange from Standard
is
-- Modified by Sergey KHROMOV - Wed Oct 16 11:40:57 2002 Begin
-- Add constructor without initial parameter Param1 which
-- calculate all solutions.
Create (Qualified1 : QualifiedCurve from Geom2dGcc ;
TheLin : Lin2d from gp ;
TolAng : Real from Standard ;
Angle : Real from Standard )
returns Lin2dTanObl from Geom2dGcc
raises BadQualifier from GccEnt;
---Purpose: 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.
-- Modified by Sergey KHROMOV - Thu Oct 17 10:34:00 2002 End
Create (Qualified1 : QualifiedCurve from Geom2dGcc ;
TheLin : Lin2d from gp ;
TolAng : Real from Standard ;
Param1 : Real from Standard ;
Angle : Real from Standard )
returns Lin2dTanObl from Geom2dGcc
raises BadQualifier from GccEnt;
---Purpose: 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).
IsDone(me) returns Boolean from Standard
is static;
---Purpose: 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.
NbSolutions(me) returns Integer from Standard
raises NotDone from StdFail
is static;
---Purpose: Returns the number of lines, representing solutions computed by this algorithm.
-- Exceptions
-- StdFail_NotDone if the construction fails.
ThisSolution(me ;
Index : Integer from Standard) returns Lin2d from gp
raises OutOfRange,NotDone
is static;
---Purpose: 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.
WhichQualifier(me ;
Index : Integer from Standard;
Qualif1 : out Position from GccEnt )
raises OutOfRange, NotDone
is static;
---Purpose: Returns the qualifier Qualif1 of the tangency argument
-- for the solution of index Index computed by this algorithm.
-- The returned qualifier is:
-- - that specified at the start of construction when the
-- solutions are defined as enclosing or outside with
-- respect to the argument, or
-- - that computed during construction (i.e. 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.
Tangency1(me ;
Index : Integer from Standard;
ParSol,ParArg : out Real from Standard;
PntSol : out Pnt2d from gp )
raises OutOfRange,NotDone
is static;
---Purpose: 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.
Intersection2 (me ;
Index : Integer from Standard;
ParSol,ParArg : out Real from Standard;
PntSol : out Pnt2d from gp )
raises NotDone from StdFail, IsParallel from GccIter, OutOfRange from Standard
is static;
---Purpose: 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.
-- GccIter_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.
IsParallel2(me) returns Boolean from Standard
raises NotDone from StdFail
is static;
---Purpose: 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.
-- Modified by Sergey KHROMOV - Wed Oct 16 12:04:52 2002 Begin
Add(me: in out; theIndex: Integer from Standard;
theLin : MyL2dTanObl from Geom2dGcc;
theTol : Real from Standard;
theC1 : Curve from Geom2dAdaptor)
returns Boolean from Standard
is private;
-- Modified by Sergey KHROMOV - Wed Oct 16 12:04:52 2002 End
fields
WellDone : Boolean from Standard;
-- True if the algorithm succeeded.
Paral2 : Boolean from Standard;
-- True if the solution is parallel to the second argument (Angle = 0).
NbrSol : Integer from Standard;
---Purpose: number of solutions.
linsol : Array1OfLin2d from TColgp;
---Purpose : The solution.
qualifier1 : Array1OfPosition from GccEnt;
-- The qualifiers of the first argument.
pnttg1sol : Array1OfPnt2d from TColgp;
-- The tangency point between the solution and the first argument on
-- the solution.
pntint2sol : Array1OfPnt2d from TColgp;
-- The tangency point between the solution and the second argument on
-- the solution.
par1sol : Array1OfReal from TColStd;
-- The parameter of the tangency point between the solution and the
-- first argument on the solution.
par2sol : Array1OfReal from TColStd;
-- The parameter of the intersection point between the solution and the
-- second argument on the solution.
pararg1 : Array1OfReal from TColStd;
-- The parameter of the tangency point between the solution and the first
-- argument on the first argument.
pararg2 : Array1OfReal from TColStd;
-- The parameter of the intersection point between the solution and
-- the second argument on the second argument.
end Lin2dTanObl;
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