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-- File: BRepBuilderAPI_GTransform.cdl
-- Created: Mon Dec 30 17:10:14 1996
-- Author: Stagiaire Mary FABIEN
-- <fbi@zozox.paris1.matra-dtv.fr>
---Copyright: Matra Datavision 1996
class GTransform from BRepBuilderAPI inherits ModifyShape from BRepBuilderAPI
---Purpose: Geometric transformation on a shape.
-- The transformation to be applied is defined as a gp_GTrsf
-- transformation. It may be:
-- - a transformation equivalent to a gp_Trsf transformation, the
-- most common case: you should , however, use a BRepAPI_Transform
-- object to perform this kind of transformation; or
-- - an affinity, or
-- - more generally, any type of point transformation which may
-- be defined by a three row, four column matrix of transformation.
-- In the last two cases, the underlying geometry of the
-- following shapes may change:
-- - a curve which supports an edge of the shape, or
-- - a surface which supports a face of the shape;
-- For example, a circle may be transformed into an ellipse when
-- applying an affinity transformation.
-- The transformation is applied to:
-- - all the curves which support edges of the shape, and
-- - all the surfaces which support faces of the shape.
-- A GTransform object provides a framework for:
-- - defining the geometric transformation to be applied,
-- - implementing the transformation algorithm, and
-- - consulting the result.
uses
Trsf from gp,
GTrsf from gp,
Shape from TopoDS,
Face from TopoDS,
Collect from BRepBuilderAPI,
ShapeModification from BRepBuilderAPI,
ListOfShape from TopTools
-- Modified by Sergey KHROMOV - Thu Mar 27 17:45:42 2003 Begin
raises
NoSuchObject from Standard
-- Modified by Sergey KHROMOV - Thu Mar 27 17:45:42 2003 End
is
Create(T: GTrsf from gp)
returns GTransform from BRepBuilderAPI;
---Purpose: Constructs a framework for applying the geometric
-- transformation T to a shape. Use the function
-- Perform to define the shape to transform.
Create(S: Shape from TopoDS; T: GTrsf from gp;
Copy: Boolean from Standard = Standard_False)
returns GTransform from BRepBuilderAPI;
---Purpose: Constructs a framework for applying the geometric
-- transformation T to a shape, and applies it to the shape S.
-- - If the transformation T is direct and isometric (i.e. if
-- the determinant of the vectorial part of T is equal to
-- 1.), and if Copy equals false (default value), the
-- resulting shape is the same as the original but with
-- a new location assigned to it.
-- - In all other cases, the transformation is applied to
-- a duplicate of S.
-- Use the function Shape to access the result.
-- Note: the constructed framework can be reused to
-- apply the same geometric transformation to other
-- shapes: just specify them with the function Perform.
Perform(me: in out; S : Shape from TopoDS;
Copy: Boolean from Standard = Standard_False)
---Purpose: Applies the geometric transformation defined at the
-- time of construction of this framework to the shape S.
-- - If the transformation T is direct and isometric (i.e. if
-- the determinant of the vectorial part of T is equal to
-- 1.), and if Copy equals false (default value), the
-- resulting shape is the same as the original but with
-- a new location assigned to it.
-- - In all other cases, the transformation is applied to a duplicate of S.
-- Use the function Shape to access the result.
-- Note: this framework can be reused to apply the same
-- geometric transformation to other shapes: just specify
-- them by calling the function Perform again.
is static;
Modified (me: in out; S : Shape from TopoDS)
---Purpose: Returns the list of shapes modified from the shape
-- <S>.
---C++: return const &
---Level: Public
returns ListOfShape from TopTools
is redefined virtual;
-- Modified by Sergey KHROMOV - Thu Mar 27 17:43:59 2003 Begin
ModifiedShape(me; S: Shape from TopoDS)
returns Shape from TopoDS
---Purpose: Returns the modified shape corresponding to <S>.
---C++: return const&
raises NoSuchObject from Standard
-- if S is not the initial shape or a sub-shape
-- of the initial shape.
is redefined virtual;
-- Modified by Sergey KHROMOV - Thu Mar 27 17:44:02 2003 End
fields
myGTrsf : GTrsf from gp;
myUseModif : Boolean from Standard;
myHist : Collect from BRepBuilderAPI;
end Transform;
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