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-- File: Geom2d_Geometry.cdl
-- Created: Wed Mar 24 18:05:00 1993
-- Author: JCV
-- <fid@sdsun2>
-- Copyright: Matra Datavision 1993
---Copyright: Matra Datavision 1991
deferred class Geometry from Geom2d inherits TShared from MMgt
--- Purpose :
-- The general abstract class Geometry in 2D space describes
-- the common behaviour of all the geometric entities.
--
-- All the objects derived from this class can be move with a
-- geometric transformation. Only the transformations which
-- doesn't modify the nature of the geometry are available in
-- this package.
-- The method Transform which defines a general transformation
-- is deferred. The other specifics transformations used the
-- method Transform.
-- All the following transformations modify the object itself.
-- Warning
-- Only transformations which do not modify the nature
-- of the geometry can be applied to Geom2d objects:
-- this is the case with translations, rotations,
-- symmetries and scales; this is also the case with
-- gp_Trsf2d composite transformations which are
-- used to define the geometric transformations applied
-- using the Transform or Transformed functions.
-- Note: Geometry defines the "prototype" of the
-- abstract method Transform which is defined for each
-- concrete type of derived object. All other
-- transformations are implemented using the Transform method.
uses Ax2d from gp,
Pnt2d from gp,
Trsf2d from gp,
Vec2d from gp
raises ConstructionError from Standard
is
Mirror (me : mutable; P : Pnt2d)
--- Purpose : Performs the symmetrical transformation of a Geometry
-- with respect to the point P which is the center of the
-- symmetry and assigns the result to this geometric object.
is static;
Mirror (me : mutable; A : Ax2d)
--- Purpose : Performs the symmetrical transformation of a Geometry
-- with respect to an axis placement which is the axis of the symmetry.
is static;
Rotate (me : mutable; P : Pnt2d; Ang : Real)
--- Purpose : Rotates a Geometry. P is the center of the rotation.
-- Ang is the angular value of the rotation in radians.
is static;
Scale (me : mutable; P : Pnt2d; S : Real)
--- Purpose : Scales a Geometry. S is the scaling value.
is static;
Translate (me : mutable; V : Vec2d)
--- Purpose : Translates a Geometry. V is the vector of the tanslation.
is static;
Translate (me : mutable; P1, P2 : Pnt2d)
--- Purpose : Translates a Geometry from the point P1 to the point P2.
is static;
Transform (me : mutable; T : Trsf2d)
--- Purpose : Transformation of a geometric object. This tansformation
-- can be a translation, a rotation, a symmetry, a scaling
-- or a complex transformation obtained by combination of
-- the previous elementaries transformations.
-- (see class Transformation of the package Geom2d).
is deferred;
--- Purpose : The following transformations have the same properties
-- as the previous ones but they don't modified the object
-- itself. A copy of the object is returned.
Mirrored (me; P : Pnt2d) returns mutable like me
is static;
Mirrored (me; A : Ax2d) returns mutable like me
is static;
Rotated (me; P : Pnt2d; Ang : Real) returns mutable like me
is static;
Scaled (me; P : Pnt2d; S : Real) returns mutable like me
is static;
Transformed (me; T : Trsf2d) returns mutable like me
is static;
Translated (me; V : Vec2d) returns mutable like me
is static;
Translated (me; P1, P2 : Pnt2d) returns mutable like me
is static;
Copy (me) returns mutable like me is deferred;
end;
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