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-- File: Extrema_ExtElC2d.cdl
-- Created: Tue Jan 4 11:37:09 1994
-- Author: Christophe MARION
-- <cma@sdsun1>
---Copyright: Matra Datavision 1994
class ExtElC2d from Extrema
---Purpose: It calculates all the distance between two elementary
-- curves.
-- These distances can be maximum or minimum.
uses Circ2d from gp,
Elips2d from gp,
Hypr2d from gp,
Lin2d from gp,
Parab2d from gp,
POnCurv2d from Extrema
raises InfiniteSolutions from StdFail,
NotDone from StdFail,
OutOfRange from Standard
is
Create returns ExtElC2d;
Create (C1,C2: Lin2d; AngTol: Real) returns ExtElC2d;
---Purpose: Calculates the distance between two lines.
-- AngTol is used to test if the lines are parallel:
-- Angle(C1,C2) < AngTol.
Create (C1: Lin2d; C2: Circ2d; Tol: Real) returns ExtElC2d;
---Purpose: Calculates the distance between a line and a
-- circle.
Create (C1: Lin2d; C2: Elips2d) returns ExtElC2d;
---Purpose: Calculates the distance between a line and an
-- elipse.
Create (C1: Lin2d; C2: Hypr2d) returns ExtElC2d;
---Purpose: Calculates the distance between a line and a
-- hyperbola.
Create (C1: Lin2d; C2: Parab2d) returns ExtElC2d;
---Purpose: Calculates the distance between a line and a
-- parabola.
Create (C1,C2: Circ2d) returns ExtElC2d;
---Purpose: Calculates the distance between two circles.
-- The circles can be parallel or identical.
Create (C1: Circ2d; C2: Elips2d) returns ExtElC2d;
---Purpose: Calculates the distance between a circle and an
-- elipse.
Create (C1: Circ2d; C2: Hypr2d) returns ExtElC2d;
---Purpose: Calculates the distance between a circle and a
-- hyperbola.
Create (C1: Circ2d; C2: Parab2d) returns ExtElC2d;
---Purpose: Calculates the distance between a circle and a
-- parabola.
Create (C1,C2: Elips2d) returns ExtElC2d;
---Purpose: Calculates the distance between two elipses.
-- The elipses can be parallel or identical.
Create (C1: Elips2d; C2: Hypr2d) returns ExtElC2d;
---Purpose: Calculates the distance between an elipse and a
-- hyperbola.
Create (C1: Elips2d; C2: Parab2d) returns ExtElC2d;
---Purpose: Calculates the distance between an elipse and a
-- parabola.
Create (C1,C2: Hypr2d) returns ExtElC2d;
---Purpose: Calculates the distance between two hyperbolas.
-- The hyperbolas can be parallel or identical.
Create (C1: Hypr2d; C2: Parab2d) returns ExtElC2d;
---Purpose: Calculates the distance between a hyperbola and a
-- parabola.
Create (C1,C2: Parab2d) returns ExtElC2d;
---Purpose: Calculates the distance between two parabolas
-- The parabolas can be parallel or identical.
IsDone (me) returns Boolean
---Purpose: Returns True if the distances are found.
is static;
IsParallel (me) returns Boolean
---Purpose: Returns True if the two curves are parallel.
raises NotDone from StdFail
-- if IsDone(me)=False.
is static;
NbExt (me) returns Integer
---Purpose: Returns the number of extremum distances.
raises NotDone from StdFail,
-- if IsDone(me)=False.
InfiniteSolutions from StdFail
-- if IsParallel(me)= True.
is static;
SquareDistance (me; N: Integer =1) returns Real
---Purpose: Returns the value of the Nth extremum square distance.
raises NotDone from StdFail,
-- if IsDone(me)=False.
InfiniteSolutions from StdFail,
-- if IsParallel(me)= True and N > 1.
OutOfRange from Standard
-- if N < 1 or N > NbExt(me)
is static;
Points (me; N: Integer; P1,P2: out POnCurv2d)
---Purpose: Returns the points of the Nth extremum distance.
-- P1 is on the first curve, P2 on the second one.
raises NotDone from StdFail,
-- if IsDone(me)=False.
InfiniteSolutions from StdFail,
-- if IsParallel(me)= True.
OutOfRange from Standard
-- if N < 1 or N > NbExt(me)
is static;
fields
myDone : Boolean;
myIsPar: Boolean;
myNbExt: Integer;
mySqDist: Real [4];
myPoint: POnCurv2d from Extrema [4,2];
end ExtElC2d;
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