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-- File: DistBetweenPCurvesGen.cdl
-- Created: Wed Oct 21 16:37:20 1992
-- Author: Laurent BUCHARD
-- <lbr@sdsun2>
---Copyright: Matra Datavision 1992
generic class DistBetweenPCurvesGen from IntCurve (
TheCurve as any;
TheCurveTool as any) -- as CurveTool from IntCurve(TheCurve)
inherits FunctionSetWithDerivatives from math
---Purpose: provides a set of 2 function of 2 variables.
-- f1(u,v) = X1(u) - X2(v)
-- f2(u,v) = Y1(u) - Y2(v)
-- where (X1(u),Y1(u)) = ParamCurve1.Value(u)
-- and (X2(v),Y2(v)) = ParamCurve2.Value(v)
--
-- The Jacobian Matrix is :
--
-- | df1 df1 | | T1x(u) - T2x(v) |
-- | --- --- | = | |
-- | du dv | | T1y(u) - T2y(v) |
-- | |
-- | |
-- | df2 df2 |
-- | --- --- |
-- | du dv |
--
-- where T1(u) = (T1x(u),T1y(u)) is the tangent vector at
-- the curve1 at the parameter u.
-- and
-- T2(u) = (T2x(u),T2y(u)) is the tangent vector at
-- the curve2 at the parameter u.
---Level: Internal
uses Vector from math,
Matrix from math
is
Create(curve1: TheCurve;
curve2: TheCurve)
returns DistBetweenPCurvesGen;
NbVariables(me)
---Purpose: returns 2.
returns Integer from Standard
is static;
NbEquations(me)
---Purpose: returns 2.
returns Integer from Standard
is static;
Value(me: in out; X: Vector; F: out Vector)
---Purpose: computes the values <F> of the Functions for the
-- variable <X>.
-- returns True if the computation was done successfully,
-- False otherwise.
returns Boolean
is static;
Derivatives(me: in out; X: Vector; D: out Matrix)
---Purpose: returns the values <D> of the derivatives for the
-- variable <X>.
-- returns True if the computation was done successfully,
-- False otherwise.
returns Boolean
is static;
Values(me: in out; X: Vector; F: out Vector; D: out Matrix)
---Purpose: returns the values <F> of the functions and the derivatives
-- <D> for the variable <X>.
-- returns True if the computation was done successfully,
-- False otherwise.
returns Boolean
is static;
fields
thecurve1 : Address from Standard; --- TheCurve;
thecurve2 : Address from Standard; --- TheCurve;
end DistBetweenPCurvesGen;
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