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-- File: Geom2d_AxisPlacement.cdl
-- Created: Wed Mar 24 17:33:01 1993
-- Author: JCV
-- <fid@sdsun2>
-- Copyright: Matra Datavision 1993
---Copyright: Matra Datavision 1991
class AxisPlacement from Geom2d inherits Geometry from Geom2d
--- Purpose : Describes an axis in 2D space.
-- An axis is defined by:
-- - its origin, also termed the "Location point" of the axis,
-- - its unit vector, termed the "Direction" of the axis.
-- Note: Geom2d_AxisPlacement axes provide the
-- same kind of "geometric" services as gp_Ax2d axes
-- but have more complex data structures. The
-- geometric objects provided by the Geom2d package
-- use gp_Ax2d objects to include axes in their data
-- structures, or to define an axis of symmetry or axis of rotation.
-- Geom2d_AxisPlacement axes are used in a context
-- where they can be shared by several objects
-- contained inside a common data structure.
uses Ax2d from gp,
Dir2d from gp,
Pnt2d from gp,
Trsf2d from gp,
Vec2d from gp
is
Create (A : Ax2d) returns mutable AxisPlacement;
--- Purpose : Constructs an axis by conversion of the gp_Ax2d axis A.
Create (P : Pnt2d; V : Dir2d) returns mutable AxisPlacement;
--- Purpose : Constructs an axis from a given origin P and unit vector V.
Reverse (me : mutable);
Reversed (me) returns mutable AxisPlacement is static;
---Purpose: Reverses the unit vector of this axis.
-- Note:
-- - Reverse assigns the result to this axis, while
-- - Reversed creates a new one.
SetAxis (me : mutable; A : Ax2d);
--- Purpose : Changes the complete definition of the axis placement.
SetDirection (me : mutable; V : Dir2d);
--- Purpose :
-- Changes the "Direction" of the axis placement.
SetLocation (me : mutable; P : Pnt2d);
--- Purpose :
-- Changes the "Location" point (origin) of the axis placement.
Angle (me; Other : AxisPlacement) returns Real;
--- Purpose :
-- Computes the angle between the "Direction" of
-- two axis placement in radians.
-- The result is comprised between -Pi and Pi.
Ax2d (me) returns Ax2d;
--- Purpose : Converts this axis into a gp_Ax2d axis.
Direction (me) returns Dir2d;
--- Purpose : Returns the "Direction" of <me>.
-- -C++: return const&
Location (me) returns Pnt2d;
--- Purpose :
-- Returns the "Location" point (origin) of the axis placement.
-- -C++: return const&
Transform (me : mutable; T : Trsf2d);
---Purpose: Applies the transformation T to this axis.
Copy (me) returns mutable like me;
---Purpose: Creates a new object which is a copy of this axis.
fields
axis : Ax2d;
end;
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