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-- File: Circ2d3Tan.cdl
-- Created: Mon Mar 18 16:35:25 1991
-- Author: Remy GILET
-- <Reg@topsn3>
---Copyright: Matra Datavision 1991
class Circ2d3Tan
from GccAna
---Purpose: This class implements the algorithms used to
-- create 2d circles tangent to 3 points/lines/circles.
-- The arguments of all construction methods are :
-- - The three qualified elements for the
-- tangency constraints (QualifiedCirc, QualifiedLine,
-- Points).
-- - A real Tolerance.
-- Tolerance is only used in the limit cases.
-- For example :
-- We want to create a circle tangent to an UnqualifiedCirc
-- C1 and an UnqualifiedCirc C2 and an UnqualifiedCirc C3
-- with a tolerance Tolerance.
-- If we do not use Tolerance it is impossible to find
-- a solution in the following case : C2 is inside C1
-- and there is no intersection point between the two
-- circles, and C3 is completly outside C1.
-- With Tolerance we will find a solution if the
-- lowest distance between C1 and C2 is lower than or
-- equal Tolerance.
uses Pnt2d from gp,
Circ2d from gp,
QualifiedCirc from GccEnt,
QualifiedLin from GccEnt,
Array1OfReal from TColStd,
Array1OfInteger from TColStd,
Array1OfCirc2d from TColgp,
Array1OfPnt2d from TColgp,
Position from GccEnt,
Array1OfPosition from GccEnt
raises OutOfRange from Standard,
NotDone from StdFail,
BadQualifier from GccEnt
is
Create(Qualified1 : QualifiedCirc from GccEnt ;
Qualified2 : QualifiedCirc from GccEnt ;
Qualified3 : QualifiedCirc from GccEnt ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to 3 circles.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Qualified1 : QualifiedCirc from GccEnt ;
Qualified2 : QualifiedCirc from GccEnt ;
Qualified3 : QualifiedLin from GccEnt ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to 2 circles and 1 line.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Qualified1 : QualifiedCirc from GccEnt ;
Qualified2 : QualifiedLin from GccEnt ;
Qualified3 : QualifiedLin from GccEnt ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to 1 circle and 2 lines.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Qualified1 : QualifiedLin from GccEnt ;
Qualified2 : QualifiedLin from GccEnt ;
Qualified3 : QualifiedLin from GccEnt ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to 3 lines.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Qualified1 : QualifiedCirc from GccEnt ;
Qualified2 : QualifiedCirc from GccEnt ;
Point3 : Pnt2d from gp ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to 2 circles and 1 Point.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Qualified1 : QualifiedCirc from GccEnt ;
Qualified2 : QualifiedLin from GccEnt ;
Point3 : Pnt2d from gp ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to a circle and a line and
-- 1 Point.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Qualified1 : QualifiedLin from GccEnt ;
Qualified2 : QualifiedLin from GccEnt ;
Point3 : Pnt2d from gp ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to 2 lines and 1 Point.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Qualified1 : QualifiedCirc from GccEnt ;
Point2 : Pnt2d from gp ;
Point3 : Pnt2d from gp ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to a circle and passing
-- thrue 2 Points.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Qualified1 : QualifiedLin from GccEnt ;
Point2 : Pnt2d from gp ;
Point3 : Pnt2d from gp ;
Tolerance : Real from Standard) returns Circ2d3Tan
---Purpose: This method implements the algorithms used to
-- create 2d circles tangent to a line and passing
-- thrue 2 Points.
-- ConstructionError is raised if there is a problem during
-- the computation.
raises BadQualifier from GccEnt;
Create(Point1 : Pnt2d from gp ;
Point2 : Pnt2d from gp ;
Point3 : Pnt2d from gp ;
Tolerance : Real from Standard) returns Circ2d3Tan;
---Purpose: This method implements the algorithms used to
-- create 2d circles passing thrue 3 Points.
-- ConstructionError is raised if there is a problem during
-- the computation.
-- -- ....................................................................
IsDone(me) returns Boolean from Standard
is static;
---Purpose: 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.
NbSolutions(me) returns Integer from Standard
---Purpose: This method returns the number of solutions.
-- Raises NotDone if the construction algorithm didn't succeed.
raises NotDone
is static;
ThisSolution(me ; Index : Integer from Standard) returns Circ2d from gp
---Purpose: 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 those outside the
-- context of the algorithm-object.
-- Raises OutOfRange if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
WhichQualifier(me ;
Index : Integer from Standard;
Qualif1 : out Position from GccEnt ;
Qualif2 : out Position from GccEnt ;
Qualif3 : out Position from GccEnt )
raises OutOfRange, NotDone
is static;
---Purpose: Returns the informations about the qualifiers of the
-- tangency
-- arguments concerning the solution number Index.
-- It returns the real qualifiers (the qualifiers given to the
-- constructor method in case of enclosed, enclosing and outside
-- and the qualifiers computedin case of unqualified).
Tangency1(me ;
Index : Integer from Standard;
ParSol,ParArg : out Real from Standard;
PntSol : out Pnt2d from gp )
---Purpose: 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. Raises OutOfRange if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
Tangency2(me ;
Index : Integer from Standard;
ParSol,ParArg : out Real from Standard;
PntSol : out Pnt2d from gp )
---Purpose: 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 Pntsol
-- on the argument curv. Raises OutOfRange if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
Tangency3(me ;
Index : Integer from Standard;
ParSol : out Real from Standard;
ParArg : out Real from Standard;
PntSol : out Pnt2d from gp )
---Purpose: 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 Pntsol
-- on the argument curv. Raises OutOfRange if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
IsTheSame1(me ;
Index : Integer from Standard) returns Boolean from Standard
---Purpose: Returns True if the solution number Index is equal to
-- the first argument. Raises OutOfRange if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
IsTheSame2(me ;
Index : Integer from Standard) returns Boolean from Standard
---Purpose: Returns True if the solution number Index is equal to
-- the second argument. Raises OutOfRange Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
IsTheSame3(me ;
Index : Integer from Standard) returns Boolean from Standard
---Purpose: Returns True if the solution number Index is equal to
-- the third argument. Raises OutOfRange if Index is greater than
-- the number of solutions.
-- It raises NotDone if the algorithm failed.
raises OutOfRange, NotDone
is static;
fields
WellDone : Boolean from Standard;
---Purpose: True if the algorithm succeeded.
NbrSol : Integer from Standard;
---Purpose: The number of solutions found.
cirsol : Array1OfCirc2d from TColgp;
-- The solutions.
qualifier1 : Array1OfPosition from GccEnt;
---Purpose: The qualifiers of the first argument.
qualifier2 : Array1OfPosition from GccEnt ;
---Purpose: The qualifiers of the second argument.
qualifier3 : Array1OfPosition from GccEnt;
---Purpose: The qualifiers of the third argument.
TheSame1 : Array1OfInteger from TColStd;
---Purpose: 1 if the solution and the first argument are the same
-- (2 circles).
-- If R1 is the radius of the first argument and Rsol the radius
-- of the solution and dist the distance between the two centers,
-- we consider the two circles are identical if R1+dist-Rsol is
-- less than Tolerance.
-- 0 in the other cases.
TheSame2 : Array1OfInteger from TColStd;
---Purpose: 1 if the solution and the second argument are the same
-- (2 circles).
-- If R2 is the radius of the second argument and Rsol the radius
-- of the solution and dist the distance between the two centers,
-- we consider the two circles are identical if R2+dist-Rsol is
-- less than Tolerance.
-- 0 in the other cases.
TheSame3 : Array1OfInteger from TColStd;
---Purpose: 1 if the solution and the third argument are the same
-- (2 circles).
-- If R3 is the radius of the third argument and Rsol the radius
-- of the solution and dist the distance between the two centers,
-- we consider the two circles are identical if R3+dist-Rsol is
-- less than Tolerance.
-- 0 in the other cases.
pnttg1sol : Array1OfPnt2d from TColgp;
---Purpose: The tangency point between the solution and the first
-- argument.
pnttg2sol : Array1OfPnt2d from TColgp;
---Purpose: The tangency point between the solution and the second
-- argument.
pnttg3sol : Array1OfPnt2d from TColgp;
---Purpose: The tangency point between the solution and the third
-- argument.
par1sol : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the first argument on the solution.
par2sol : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the second argument on the solution.
par3sol : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the third argument on the solution.
pararg1 : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the first argument on the first argument.
pararg2 : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the second argument on the second argument.
pararg3 : Array1OfReal from TColStd;
---Purpose: The parameter of the tangency point between the solution
-- and the third argument on the second argument.
end Circ2d3Tan;
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