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6e33d3ced2
Redundant keyword 'mutable' removed in CDL files. In IGESConvGeom_GeomBuilder, unused methods MakeXY() and MakeXYZ() removed. Method StepAP214_AutoDesignGroupAssignment::Init() replicating same method of the base class is removed as it causes CDL extraction error after above (seemingly irrelevant) changes.
159 lines
5.4 KiB
Plaintext
159 lines
5.4 KiB
Plaintext
-- Created on: 1993-03-09
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-- Created by: JCV
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-- Copyright (c) 1993-1999 Matra Datavision
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-- Copyright (c) 1999-2014 OPEN CASCADE SAS
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--
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-- This file is part of Open CASCADE Technology software library.
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--
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-- This library is free software; you can redistribute it and/or modify it under
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-- the terms of the GNU Lesser General Public License version 2.1 as published
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-- by the Free Software Foundation, with special exception defined in the file
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-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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-- distribution for complete text of the license and disclaimer of any warranty.
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--
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-- Alternatively, this file may be used under the terms of Open CASCADE
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-- commercial license or contractual agreement.
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class Axis2Placement from Geom inherits AxisPlacement from Geom
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---Purpose : Describes a right-handed coordinate system in 3D space.
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-- A coordinate system is defined by:
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-- - its origin, also termed the "Location point" of the coordinate system,
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-- - three orthogonal unit vectors, termed respectively
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-- the "X Direction", "Y Direction" and "Direction" (or
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-- "main Direction") of the coordinate system.
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-- As a Geom_Axis2Placement coordinate system is
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-- right-handed, its "Direction" is always equal to the
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-- cross product of its "X Direction" and "Y Direction".
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-- The "Direction" of a coordinate system is called the
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-- "main Direction" because when this unit vector is
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-- modified, the "X Direction" and "Y Direction" are
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-- recomputed, whereas when the "X Direction" or "Y
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-- Direction" is changed, the "main Direction" is
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-- retained. The "main Direction" is also the "Z Direction".
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-- Note: Geom_Axis2Placement coordinate systems
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-- provide the same kind of "geometric" services as
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-- gp_Ax2 coordinate systems but have more complex
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-- data structures. The geometric objects provided by
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-- the Geom package use gp_Ax2 objects to include
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-- coordinate systems in their data structures, or to
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-- define the geometric transformations, which are applied to them.
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-- Geom_Axis2Placement coordinate systems are
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-- used in a context where they can be shared by
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-- several objects contained inside a common data structure.
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uses Ax1 from gp,
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Ax2 from gp,
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Dir from gp,
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Pnt from gp,
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Trsf from gp,
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Geometry from Geom
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raises ConstructionError from Standard
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is
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Create (A2 : Ax2) returns Axis2Placement;
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---Purpose : Returns a transient copy of A2.
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Create (P : Pnt; N, Vx : Dir) returns Axis2Placement
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---Purpose :
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-- P is the origin of the axis placement, N is the main
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-- direction of the axis placement and Vx is the "XDirection".
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-- If the two directions N and Vx are not orthogonal the
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-- "XDirection" is computed as follow :
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-- XDirection = N ^ (Vx ^ N).
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raises ConstructionError;
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---Purpose : Raised if N and Vx are parallel.
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SetAx2 (me : mutable; A2 : Ax2);
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---Purpose : Assigns the origin and the three unit vectors of A2 to
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-- this coordinate system.
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SetDirection (me : mutable; V : Dir)
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---Purpose :
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-- Changes the main direction of the axis placement.
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-- The "Xdirection" is modified :
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-- New XDirection = V ^ (Previous_Xdirection ^ V).
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raises ConstructionError;
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---Purpose :
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-- Raised if V and the previous "XDirection" are parallel
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-- because it is impossible to calculate the new "XDirection"
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-- and the new "YDirection".
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SetXDirection (me : mutable; Vx : Dir)
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---Purpose :
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-- Changes the "XDirection" of the axis placement, Vx is the
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-- new "XDirection". If Vx is not normal to the main direction
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-- then "XDirection" is computed as follow :
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-- XDirection = Direction ^ ( Vx ^ Direction).
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-- The main direction is not modified.
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raises ConstructionError;
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---Purpose : Raised if Vx and "Direction" are parallel.
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SetYDirection (me : mutable; Vy : Dir)
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---Purpose :
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-- Changes the "YDirection" of the axis placement, Vy is the
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-- new "YDirection". If Vy is not normal to the main direction
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-- then "YDirection" is computed as follow :
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-- YDirection = Direction ^ ( Vy ^ Direction).
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-- The main direction is not modified. The "XDirection" is
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-- modified.
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raises ConstructionError;
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---Purpose : Raised if Vy and the main direction are parallel.
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Ax2 (me) returns Ax2;
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---Purpose : Returns a non transient copy of <me>.
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XDirection (me) returns Dir;
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---Purpose : Returns the "XDirection". This is a unit vector.
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---C++: return const&
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YDirection (me) returns Dir;
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---Purpose : Returns the "YDirection". This is a unit vector.
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---C++: return const&
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Transform (me : mutable; T : Trsf);
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---Purpose :
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-- Transforms an axis placement with a Trsf.
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-- The "Location" point, the "XDirection" and the
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-- "YDirection" are transformed with T. The resulting
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-- main "Direction" of <me> is the cross product between
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-- the "XDirection" and the "YDirection" after transformation.
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Copy (me) returns like me;
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---Purpose: Creates a new object which is a copy of this coordinate system.
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Create (P : Pnt; Vz, Vx, Vy : Dir) returns Axis2Placement
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is private;
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fields
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vxdir : Dir;
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vydir : Dir;
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end;
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