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-- File: IntWalk_IWFunction.cdl
-- Created: Thu Jun 3 12:05:37 1993
-- Author: Jacques GOUSSARD
-- <jag@topsn2>
---Copyright: Matra Datavision 1993
deferred generic class IWFunction from IntWalk
(ThePSurface as any)
inherits FunctionSetWithDerivatives from math
---Purpose: Template class for a function on a parametric surface.
-- the form of the function is F(u,v) = 0 where u and v are
-- the parameteric coordinates of a point on the surface.
uses Vector from math,
Matrix from math,
Pnt from gp,
Vec from gp,
Dir2d from gp
raises UndefinedDerivative from StdFail
is
Set(me: in out; PS: ThePSurface)
is static;
NbVariables(me)
---Purpose: This method has to return 2.
returns Integer from Standard;
NbEquations(me)
---Purpose: This method has to return 1.
returns Integer from Standard;
Value(me : in out; X : Vector from math;
F : out Vector from math)
---Purpose: The dimension of F is 1.
returns Boolean from Standard;
Derivatives(me : in out; X : Vector from math;
D : out Matrix from math)
---Purpose: The dimension of D is (1,2).
returns Boolean from Standard;
Values(me : in out; X : Vector from math;
F : out Vector from math;
D : out Matrix from math)
returns Boolean from Standard;
Root(me)
---Purpose: Root is the value of the function at the solution.
-- It is a vector of dimension 1, i-e a real.
returns Real from Standard
is static;
Tolerance(me)
---Purpose: Returns the value Tol so that if Abs(Func.Root())<Tol
-- the function is considered null.
returns Real from Standard
is static;
Point(me)
---Purpose: Returns the value of the solution point on the surface.
returns Pnt from gp
is static;
IsTangent(me : in out)
returns Boolean from Standard
is static;
Direction3d(me: in out)
returns Vec from gp
raises UndefinedDerivative from StdFail
is static;
Direction2d(me: in out)
returns Dir2d from gp
raises UndefinedDerivative from StdFail
is static;
end IWFunction;
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