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Integration of OCCT 6.5.0 from SVN
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src/GeomAPI/GeomAPI_ExtremaCurveSurface.cdl
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src/GeomAPI/GeomAPI_ExtremaCurveSurface.cdl
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-- File: GeomAPI_ExtremaCurveSurface.cdl
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-- Created: Fri Mar 18 11:30:11 1994
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-- Author: Bruno DUMORTIER
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-- <dub@fuegox>
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---Copyright: Matra Datavision 1994
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class ExtremaCurveSurface from GeomAPI
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---Purpose: Describes functions for computing all the extrema
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-- between a curve and a surface.
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-- An ExtremaCurveSurface algorithm minimizes or
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-- maximizes the distance between a point on the curve
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-- and a point on the surface. Thus, it computes start
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-- and end points of perpendiculars common to the
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-- curve and the surface (an intersection point is not an
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-- extremum except where the curve and the surface
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-- are tangential at this point).
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-- Solutions consist of pairs of points, and an extremum
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-- is considered to be a segment joining the two points of a solution.
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-- An ExtremaCurveSurface object provides a framework for:
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-- - defining the construction of the extrema,
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-- - implementing the construction algorithm, and
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-- - consulting the results.
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-- Warning
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-- In some cases, the nearest points between a curve
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-- and a surface do not correspond to one of the
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-- computed extrema. Instead, they may be given by:
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-- - a point of a bounding curve of the surface and one of the following:
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-- - its orthogonal projection on the curve,
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-- - a limit point of the curve; or
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-- - a limit point of the curve and its projection on the surface; or
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-- - an intersection point between the curve and the surface.
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uses
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Curve from Geom,
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Surface from Geom,
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ExtCS from Extrema,
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Pnt from gp,
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Length from Quantity,
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Parameter from Quantity
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raises
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OutOfRange from Standard,
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NotDone from StdFail
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is
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Create
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---Purpose: Constructs an empty algorithm for computing
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-- extrema between a curve and a surface. Use an
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-- Init function to define the curve and the surface on
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-- which it is going to work.
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returns ExtremaCurveSurface from GeomAPI;
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Create(Curve : Curve from Geom;
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Surface : Surface from Geom)
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---Purpose: Computes the extrema distances between the
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-- curve <C> and the surface <S>.
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---Level: Public
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returns ExtremaCurveSurface from GeomAPI;
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Create(Curve : Curve from Geom;
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Surface : Surface from Geom;
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Wmin, Wmax : Parameter from Quantity;
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Umin, Umax : Parameter from Quantity;
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Vmin, Vmax : Parameter from Quantity)
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---Purpose: Computes the extrema distances between the
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-- curve <C> and the surface <S>. The solution
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-- point are computed in the domain [Wmin,Wmax] of
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-- the curve and in the domain [Umin,Umax]
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-- [Vmin,Vmax] of the surface.
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-- Warning
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-- Use the function NbExtrema to obtain the number
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-- of solutions. If this algorithm fails, NbExtrema returns 0.
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returns ExtremaCurveSurface from GeomAPI;
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Init(me : in out;
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Curve : Curve from Geom;
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Surface : Surface from Geom)
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---Purpose: Computes the extrema distances between the
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-- curve <C> and the surface <S>.
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---Level: Public
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is static;
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Init(me : in out;
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Curve : Curve from Geom;
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Surface : Surface from Geom;
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Wmin, Wmax : Parameter from Quantity;
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Umin, Umax : Parameter from Quantity;
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Vmin, Vmax : Parameter from Quantity)
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---Purpose: Computes the extrema distances between the
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-- curve <C> and the surface <S>. The solution
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-- point are computed in the domain [Wmin,Wmax] of
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-- the curve and in the domain [Umin,Umax]
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-- [Vmin,Vmax] of the surface.
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-- Warning
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-- Use the function NbExtrema to obtain the number
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-- of solutions. If this algorithm fails, NbExtrema returns 0.
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is static;
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NbExtrema(me)
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---Purpose: Returns the number of extrema computed by this algorithm.
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-- Note: if this algorithm fails, NbExtrema returns 0.
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returns Integer from Standard
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---C++: alias "Standard_EXPORT operator Standard_Integer() const;"
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is static;
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Points(me; Index : Integer from Standard;
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P1, P2 : out Pnt from gp )
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---Purpose: Returns the points P1 on the curve and P2 on the
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-- surface, which are the ends of the extremum of index
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-- Index computed by this algorithm.
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-- Exceptions
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-- Standard_OutOfRange if Index is not in the range [
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-- 1,NbExtrema ], where NbExtrema is the
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-- number of extrema computed by this algorithm.
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raises
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OutOfRange from Standard
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is static;
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Parameters(me; Index : Integer from Standard;
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W : out Parameter from Quantity;
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U, V : out Parameter from Quantity)
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---Purpose: Returns the parameters W of the point on the curve,
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-- and (U,V) of the point on the surface, which are the
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-- ends of the extremum of index Index computed by this algorithm.
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-- Exceptions
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-- Standard_OutOfRange if Index is not in the range [
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-- 1,NbExtrema ], where NbExtrema is the
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-- number of extrema computed by this algorithm.
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raises
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OutOfRange from Standard
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is static;
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Distance(me; Index : Integer from Standard)
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returns Length from Quantity
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---Purpose: Computes the distance between the end points of the
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-- extremum of index Index computed by this algorithm.
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-- Exceptions
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-- Standard_OutOfRange if index is not in the range [
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-- 1,NbExtrema ], where NbExtrema is the
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-- number of extrema computed by this algorithm.
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raises
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OutOfRange from Standard
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is static;
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NearestPoints(me; PC, PS : out Pnt from gp)
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---Purpose: Returns the points PC on the curve and PS on the
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-- surface, which are the ends of the shortest extremum computed by this algorithm.
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-- Exceptions - StdFail_NotDone if this algorithm fails.
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raises
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NotDone from StdFail
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is static;
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LowerDistanceParameters(me; W : out Parameter from Quantity;
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U, V : out Parameter from Quantity)
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---Purpose: Returns the parameters W of the point on the curve
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-- and (U,V) of the point on the surface, which are the
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-- ends of the shortest extremum computed by this algorithm.
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-- Exceptions - StdFail_NotDone if this algorithm fails.
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raises
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NotDone from StdFail
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is static;
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LowerDistance(me)
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---Purpose: Computes the distance between the end points of the
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-- shortest extremum computed by this algorithm.
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-- Exceptions - StdFail_NotDone if this algorithm fails.
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returns Length from Quantity
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---C++: alias "Standard_EXPORT operator Standard_Real() const;"
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raises
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NotDone from StdFail
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is static;
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Extrema(me)
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---Purpose: Returns the algorithmic object from Extrema
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---Level: Advanced
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---C++: return const&
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---C++: inline
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returns ExtCS from Extrema
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is static;
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fields
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myIsDone: Boolean from Standard;
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myIndex : Integer from Standard; -- index of the nearest solution
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myExtCS : ExtCS from Extrema;
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end ExtremaCurveSurface;
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