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-- File: ProjLib_PrjResolve.cdl
-- Created: Thu Nov 6 13:47:17 1997
-- Author: Roman BORISOV
-- <rbv@redfox.nnov.matra-dtv.fr>
---Copyright: Matra Datavision 1997
private class PrjResolve from ProjLib
---Purpose:
uses
Pnt2d from gp,
Surface from Adaptor3d,
Curve from Adaptor3d,
SurfacePtr from Adaptor3d,
CurvePtr from Adaptor3d
raises
DomainError from Standard,
ConstructionError,
NotDone from StdFail
is
Create (C: Curve from Adaptor3d; S: Surface from Adaptor3d; Fix: Integer)
returns PrjResolve
raises ConstructionError;
Perform(me: in out; t, U, V: Real; Tol, Inf, Sup: Pnt2d; FTol: Real from Standard = -1; StrictInside: Boolean from Standard = Standard_False)
---Purpose: Calculates the ort from C(t) to S with a close point.
-- The close point is defined by the parameter values
-- U0 and V0.
-- The function F(u,v)=distance(S(u,v),C(t)) has an
-- extremum when gradient(F)=0. The algorithm searchs
-- a zero near the close point.
raises DomainError;
-- if U0,V0 are outside the definition ranges of the
-- surface.
IsDone (me) returns Boolean
---Purpose: Returns True if the distance is found.
is static;
Solution (me) returns Pnt2d from gp
---Purpose: Returns the point of the extremum distance.
raises NotDone from StdFail
-- if IsDone(me)=False.
is static;
fields
myCurve : CurvePtr from Adaptor3d;
mySurface : SurfacePtr from Adaptor3d;
myDone : Boolean from Standard;
mySolution : Pnt2d from gp;
myFix : Integer from Standard;
end PrjResolve;
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