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-- File: ExtElC.cdl
-- Created: Thu Feb 21 18:49:13 1991
-- Author: Isabelle GRIGNON
-- <isg@topsn3>
---Copyright: Matra Datavision 1991
class ExtElC from Extrema
---Purpose: It calculates all the distance between two elementary
-- curves.
-- These distances can be maximum or minimum.
uses Circ from gp,
Elips from gp,
Hypr from gp,
Lin from gp,
Parab from gp,
POnCurv from Extrema
raises InfiniteSolutions from StdFail,
NotDone from StdFail,
OutOfRange from Standard
is
Create returns ExtElC;
Create (C1,C2: Lin; AngTol: Real) returns ExtElC;
---Purpose: Calculates the distance between two lines.
-- AngTol is used to test if the lines are parallel:
-- Angle(C1,C2) < AngTol.
Create (C1: Lin; C2: Circ; Tol: Real) returns ExtElC;
---Purpose: Calculates the distance between a line and a
-- circle.
Create (C1: Lin; C2: Elips) returns ExtElC;
---Purpose: Calculates the distance between a line and an
-- elipse.
Create (C1: Lin; C2: Hypr) returns ExtElC;
---Purpose: Calculates the distance between a line and a
-- hyperbola.
Create (C1: Lin; C2: Parab) returns ExtElC;
---Purpose: Calculates the distance between a line and a
-- parabola.
Create (C1,C2: Circ) returns ExtElC;
---Purpose: Calculates the distance between two circles.
-- The circles can be parallel or identical.
Create (C1: Circ; C2: Elips) returns ExtElC;
---Purpose: Calculates the distance between a circle and an
-- elipse.
Create (C1: Circ; C2: Hypr) returns ExtElC;
---Purpose: Calculates the distance between a circle and a
-- hyperbola.
Create (C1: Circ; C2: Parab) returns ExtElC;
---Purpose: Calculates the distance between a circle and a
-- parabola.
Create (C1,C2: Elips) returns ExtElC;
---Purpose: Calculates the distance between two elipses.
-- The elipses can be parallel or identical.
Create (C1: Elips; C2: Hypr) returns ExtElC;
---Purpose: Calculates the distance between an elipse and a
-- hyperbola.
Create (C1: Elips; C2: Parab) returns ExtElC;
---Purpose: Calculates the distance between an elipse and a
-- parabola.
Create (C1,C2: Hypr) returns ExtElC;
---Purpose: Calculates the distance between two hyperbolas.
-- The hyperbolas can be parallel or identical.
Create (C1: Hypr; C2: Parab) returns ExtElC;
---Purpose: Calculates the distance between a hyperbola and a
-- parabola.
Create (C1,C2: Parab) returns ExtElC;
---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 POnCurv)
---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;
--modified by NIZNHY-PKV Fri Nov 21 10:47:21 2008 ft
-- it was *[4]
mySqDist: Real [6];
myPoint: POnCurv from Extrema [6,2];
end ExtElC;
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