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-- File: PTopLoc.cdl
-- Created: Wed Mar 3 15:51:14 1993
-- Author: Remi LEQUETTE
-- <rle@phobox>
-- Update: fma
---Copyright: Matra Datavision 1993
package PTopLoc
---Purpose: The PTopLoc package describes persistent
-- structures for 3D local coordinate systems.
--
-- The class Datum3D describes an elementary local
-- coordinate system. It is a linear transformation
-- (Trsf from gp). The transformation is rigid
-- (Rotation + Translation).
--
-- The private class ItemLocation represents an
-- elementary local coordinate system (Datum3D)
-- raised to an Integer power elevation. It is used
-- to link coordinate systems in a Location.
--
-- The class Location describes a local coordinate
-- system. It is a chain of elementary local
-- coordinate systems raised to power elevations. The
-- Location keeps track of how the coordinate system
-- was built.
uses
Standard,
gp
is
class Datum3D;
-- inherits Persistent from Standard
---Purpose: Persistent elementary local coordinate system.
private class ItemLocation;
-- inherits Persistent from Standard
---Purpose: Persistent class used to implement Locations.
class Location;
-- inherits Storable from Standard
---Purpose: Storable composite local coordinate system.
end PTopLoc;
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