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--
-- File : OffsetSurface.cdl
-- Created : Sat 9 Jan 1993
-- Author : CKY / Contract Toubro-Larsen ( TCD )
--
---Copyright : MATRA-DATAVISION 1993
--
class OffsetSurface from IGESGeom inherits IGESEntity
---Purpose: defines IGESOffsetSurface, Type <140> Form <0>
-- in package IGESGeom
-- An offset surface is a surface defined in terms of an
-- already existing surface.If S(u, v) is a parametrised
-- regular surface and N(u, v) is a differential field of
-- unit normal vectors defined on the whole surface, and
-- "d" a fixed non zero real number, then offset surface
-- to S is a parametrised surface S(u, v) given by
-- O(u, v) = S(u, v) + d * N(u, v);
-- u1 <= u <= u2; v1 <= v <= v2;
uses
Vec from gp,
XYZ from gp
is
Create returns mutable OffsetSurface;
-- Specific Methods pertaining to the class
Init (me : mutable;
anIndicatoR : XYZ;
aDistance : Real;
aSurface : IGESEntity);
---Purpose : This method is used to set the fields of the class
-- OffsetSurface
-- - anIndicator : Offset indicator
-- - aDistance : Offset distance
-- - aSurface : Surface that is offset
OffsetIndicator (me) returns Vec;
---Purpose : returns the offset indicator
TransformedOffsetIndicator (me) returns Vec;
---Purpose : returns the offset indicator after applying Transf. Matrix
Distance (me) returns Real;
---Purpose : returns the distance by which surface is offset
Surface (me) returns IGESEntity;
---Purpose : returns the surface that has been offset
fields
--
-- Class : IGESGeom_OffsetSurface
--
-- Purpose : Declaration of variables specific to the definition
-- of the Class OffsetSurface.
--
-- Reminder : A OffsetSurface instance is defined by :
-- The coordinates of offset indicator, the offset distance
-- and the surface to be offset.
theIndicator : XYZ;
theDistance : Real;
theSurface : IGESEntity;
end OffsetSurface;
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