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-- File: GeomProjLib.cdl
-- Created: Wed Aug 25 18:35:56 1993
-- Author: Bruno DUMORTIER
-- <dub@topsn3>
---Copyright: Matra Datavision 1993
package GeomProjLib
---Purpose: Projection of a curve on a surface.
uses
gp,
Geom,
Geom2d
is
--
-- package methods
--
Curve2d(C : Curve from Geom;
First, Last : Real from Standard;
S : Surface from Geom;
UFirst,ULast,
VFirst,VLast: Real from Standard ;
Tolerance : in out Real from Standard )
---Purpose: gives the 2d-curve of a 3d-curve lying on a
-- surface ( uses GeomProjLib_ProjectedCurve )
-- The 3dCurve is taken between the parametrization
-- range [First, Last]
-- <Tolerance> is used as input if the projection needs
-- an approximation. In this case, the reached
-- tolerance is set in <Tolerance> as output.
-- WARNING : if the projection has failed, this
-- method returns a null Handle.
returns Curve from Geom2d;
Curve2d(C : Curve from Geom;
First, Last : Real from Standard;
S : Surface from Geom;
Tolerance : in out Real from Standard )
---Purpose: gives the 2d-curve of a 3d-curve lying on a
-- surface ( uses GeomProjLib_ProjectedCurve )
-- The 3dCurve is taken between the parametrization
-- range [First, Last]
-- <Tolerance> is used as input if the projection needs
-- an approximation. In this case, the reached
-- tolerance is set in <Tolerance> as output.
-- WARNING : if the projection has failed, this
-- method returns a null Handle.
returns Curve from Geom2d;
Curve2d(C : Curve from Geom;
First, Last : Real from Standard;
S : Surface from Geom)
---Purpose: gives the 2d-curve of a 3d-curve lying on a
-- surface ( uses GeomProjLib_ProjectedCurve )
-- The 3dCurve is taken between the parametrization
-- range [First, Last]
-- If the projection needs an approximation,
-- Precision::PApproximation() is used.
-- WARNING : if the projection has failed, this
-- method returns a null Handle.
returns Curve from Geom2d;
Curve2d(C : Curve from Geom;
S : Surface from Geom )
---Purpose: gives the 2d-curve of a 3d-curve lying on a
-- surface ( uses GeomProjLib_ProjectedCurve ).
-- If the projection needs an approximation,
-- Precision::PApproximation() is used.
-- WARNING : if the projection has failed, this
-- method returns a null Handle.
returns Curve from Geom2d;
Curve2d(C : Curve from Geom;
S : Surface from Geom ;
UDeb : Real from Standard ;
UFin : Real from Standard ;
VDeb : Real from Standard ;
VFin : Real from Standard)
---Purpose: gives the 2d-curve of a 3d-curve lying on a
-- surface ( uses GeomProjLib_ProjectedCurve ).
-- If the projection needs an approximation,
-- Precision::PApproximation() is used.
-- WARNING : if the projection has failed, this
-- method returns a null Handle.
-- can expand a little the bounds of surface
returns Curve from Geom2d;
Curve2d(C : Curve from Geom;
S : Surface from Geom;
UDeb : Real from Standard ;
UFin : Real from Standard ;
VDeb : Real from Standard ;
VFin : Real from Standard ;
Tolerance : in out Real from Standard )
---Purpose: gives the 2d-curve of a 3d-curve lying on a
-- surface ( uses GeomProjLib_ProjectedCurve ).
-- If the projection needs an approximation,
-- Precision::PApproximation() is used.
-- WARNING : if the projection has failed, this
-- method returns a null Handle.
-- can expand a little the bounds of surface
returns Curve from Geom2d;
Project(C : Curve from Geom;
S : Surface from Geom )
---Purpose: Constructs the 3d-curve from the normal
-- projection of the Curve <C> on the surface <S>.
-- WARNING : if the projection has failes returns a
-- null Handle.
returns Curve from Geom;
ProjectOnPlane(Curve : Curve from Geom;
Plane : Plane from Geom;
Dir : Dir from gp ;
KeepParametrization : Boolean from Standard)
---Purpose: Constructs the 3d-curves from the projection
-- of the curve <Curve> on the plane <Plane> along
-- the direction <Dir>.
-- If <KeepParametrization> is true, the parametrization
-- of the Projected Curve <PC> will be the same as the
-- parametrization of the initial curve <C>.
-- It meens: proj(C(u)) = PC(u) for each u.
-- Otherwize, the parametrization may change.
returns Curve from Geom;
end GeomProjLib;
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