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-- File: BndLib_AddSurface.cdl
-- Created: Mon Jul 24 14:17:25 1995
-- Author: Modelistation
-- <model@metrox>
---Copyright: Matra Datavision 1995
class AddSurface from BndLib
---Purpose: computes the box from a surface
-- Functions to add a surface to a bounding box.
-- The surface is defined from a Geom surface.
uses Box from Bnd,
Surface from Adaptor3d
is
Add(myclass; S : Surface from Adaptor3d;
Tol : Real from Standard;
B : in out Box from Bnd);
---Purpose: Adds to the bounding box B the surface S
-- B is then enlarged by the tolerance value Tol.
-- Note: depending on the type of curve, one of the following
-- representations of the surface S is used to include it in the bounding box B:
-- - an exact representation if S is built from a plane, a
-- cylinder, a cone, a sphere or a torus,
-- - the poles of the surface if S is built from a Bezier
-- surface or a BSpline surface,
-- - the points of an approximation of the surface S in
-- cases other than offset surfaces;
-- - in the case of an offset surface, the basis surface is first
-- included according to the previous rules; then the
-- bounding box is enlarged by the offset value.
-- Warning
-- Do not use these functions to add a non-finite surface to
-- the bounding box B.
-- If UMin, UMax, VMin or VMax is an infinite value B will become WholeSpace.
-- S is an adapted surface, that is, an object which is an interface between:
-- - the services provided by a surface from the package Geom
-- - and those required of the surface by the computation algorithm.
-- The adapted surface is created in the following way:
-- Handle(Geom_Surface) mysurface = ... ;
-- GeomAdaptor_Surface S(mysurface);
-- The bounding box B is then enlarged by adding this surface:
-- Bnd_Box B;
-- // ...
-- Standard_Real Tol = ... ;
-- AddSurface::Add ( S, Tol, B );
Add(myclass; S : Surface from Adaptor3d;
UMin,UMax,VMin,VMax : Real from Standard;
Tol : Real from Standard;
B : in out Box from Bnd);
---Purpose: Adds to the bounding box B the surface S
-- the patch of the surface S limited in the u parametric
-- direction by the two parameter values UMin, UMax, and
-- in the v parametric direction by the two parameter
-- values VMin, VMax.
-- Note: depending on the type of curve, one of the following
-- representations of the surface S is used to include it in the bounding box B:
-- - an exact representation if S is built from a plane, a
-- cylinder, a cone, a sphere or a torus,
-- - the poles of the surface if S is built from a Bezier
-- surface or a BSpline surface,
-- - the points of an approximation of the surface S in
-- cases other than offset surfaces;
-- - in the case of an offset surface, the basis surface is first
-- included according to the previous rules; then the
-- bounding box is enlarged by the offset value.
-- Warning
-- Do not use these functions to add a non-finite surface to
-- the bounding box B.
-- If UMin, UMax, VMin or VMax is an infinite value B will become WholeSpace.
-- S is an adapted surface, that is, an object which is an interface between:
-- - the services provided by a surface from the package Geom
-- - and those required of the surface by the computation algorithm.
-- The adapted surface is created in the following way:
-- Handle(Geom_Surface) mysurface = ... ;
-- GeomAdaptor_Surface S(mysurface);
-- The bounding box B is then enlarged by adding this surface:
-- Bnd_Box B;
-- // ...
-- Standard_Real Tol = ... ;
-- AddSurface::Add ( S, Tol, B );
end AddSurface;
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