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-- File: Lin2d2Tan.cdl
-- Created: Wed Apr 24 11:29:07 1991
-- Author: Remi GILET
-- <reg@topsn2>
---Copyright: Matra Datavision 1991
generic class Lin2d2Tan from GccIter (
TheCurve as any;
TheCurveTool as any;
TheQualifiedCurve as any) -- as QualifiedCurve from GccEnt
-- (TheCurve)
---Purpose: This class implements the algorithms used to
-- create 2d lines tangent to 2 other elements which
-- can be circles, curves or points.
-- More than one argument must be a curve.
--
-- Note: Some constructors may check the type of the qualified argument
-- and raise BadQualifier Error in case of incorrect couple (qualifier,
-- curv).
-- For example: "EnclosedCirc".
uses Pnt2d from gp,
Lin2d from gp,
QualifiedCirc from GccEnt,
Position from GccEnt
raises BadQualifier from GccEnt,
NotDone from StdFail
private class FuncTCuCu instantiates FunctionTanCuCu from GccIter(
TheCurve,TheCurveTool);
private class FuncTCuPt instantiates FunctionTanCuPnt from GccIter(
TheCurve,TheCurveTool);
private class FuncTCirCu instantiates FunctionTanCirCu from GccIter(
TheCurve,TheCurveTool);
is
Create (Qualified1 : TheQualifiedCurve ;
ThePoint : Pnt2d ;
Param1 : Real ;
Tolang : Real ) returns Lin2d2Tan from GccIter
---Purpose: This class implements the algorithms used to create 2d
-- lines passing thrue a point and tangent to a curve.
-- Tolang is used to determine the tolerance for the
-- tangency points.
-- Param2 is used for the initial guess on the curve.
raises BadQualifier from GccEnt;
Create (Qualified1 : QualifiedCirc ;
Qualified2 : TheQualifiedCurve ;
Param2 : Real ;
Tolang : Real ) returns Lin2d2Tan from GccIter
raises BadQualifier from GccEnt;
---Purpose: This class implements the algorithms used to create 2d
-- line tangent to a circle and to a cuve.
-- Tolang is used to determine the tolerance for the
-- tangency points.
-- Param2 is used for the initial guess on the curve.
-- Exception BadQualifier is raised in the case of
-- EnclosedCirc
Create (Qualified1 : TheQualifiedCurve ;
Qualified2 : TheQualifiedCurve ;
Param1 : Real ;
Param2 : Real ;
Tolang : Real ) returns Lin2d2Tan from GccIter
raises BadQualifier from GccEnt;
---Purpose: This class implements the algorithms used to create 2d
-- line tangent to two curves.
-- Tolang is used to determine the tolerance for the
-- tangency points.
-- Param1 is used for the initial guess on the first curve.
-- Param2 is used for the initial guess on the second curve.
--------------------------------------------------------------------------
IsDone (me) returns Boolean
is static;
---Purpose: This methode returns true when there is a solution
-- and false in the other cases.
ThisSolution(me) returns Lin2d
raises NotDone from StdFail
is static;
---Purpose: Returns the solution.
WhichQualifier(me ;
Qualif1 : out Position from GccEnt;
Qualif2 : out Position from GccEnt)
raises NotDone from StdFail
is static;
-- It 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 ;
ParSol,ParArg : out Real ;
PntSol : out Pnt2d)
raises NotDone from StdFail
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.
Tangency2(me ;
ParSol,ParArg : out Real ;
PntSol : out Pnt2d)
raises NotDone from StdFail
is static;
-- 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.
fields
WellDone : Boolean;
-- True if the algorithm succeeded.
linsol : Lin2d;
---Purpose : The solutions.
qualifier1 : Position from GccEnt;
-- The qualifiers of the first argument.
qualifier2 : Position from GccEnt;
-- The qualifiers of the first argument.
pnttg1sol : Pnt2d;
-- The tangency point between the solution and the first argument on
-- the solution.
pnttg2sol : Pnt2d;
-- The tangency point between the solution and the second argument on
-- the solution.
par1sol : Real;
-- The parameter of the tangency point between the solution and the
-- first argument on the solution.
par2sol : Real;
-- The parameter of the tangency point between the solution and the
-- second argument on the solution.
pararg1 : Real;
-- The parameter of the tangency point between the solution and the first
-- argument on the first argument.
pararg2 : Real;
-- The parameter of the tangency point between the solution and the second
-- argument on the second argument.
end Lin2d2Tan;
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