--
-- File      : IGESDraw.cdl
-- Created   : Mon 11 Jan 1993
-- Author    : CKY / Contract Toubro-Larsen (Niraj RANGWALA)
--
---Copyright : MATRA-DATAVISION  1993
--

package IGESDraw


        ---Purpose : This package contains the group of classes necessary for
        --           Structure Entities implied in Drawings and Structured
        --           Graphics (Sets for drawing, Drawings and Views).

uses

        Standard,
        TCollection,
        gp,
	TColgp,
	TColStd,
	Message,
        Interface,
        IGESData,
        IGESDimen,
        IGESBasic,
        IGESGraph,
        IGESGeom

is

     class ConnectPoint;
     -- type <132> form <0>
     ---Purpose : Connect Point Entity describes a point of connection for
     --           zero, one or more entities. It is referenced from Composite
     --           curve, or Network Subfigure Definition/Instance, or the Flow
     --           Associative Instance, or it may stand alone.

     class NetworkSubfigureDef;
     -- type <320> form <0>
     ---Purpose : This class differs from the ordinary subfigure definition
     --           in that it defines a specialized subfigure, one whose
     --           instances may participate in networks.

     class ViewsVisible;
     -- type <402> form <3>
     ---Purpose : If an entity is to be displayed in more than one views,
     --           this class instance is used, which contains the Visible
     --           views and the associated entity Displays.

     class ViewsVisibleWithAttr;
     -- type <402> form <4>
     ---Purpose : This class is extension of Class ViewsVisible.  It is used
     --           for those entities that are visible in multiple views, but
     --           must have a different line font, color number, or
     --           line weight in each view.

     class LabelDisplay;
     -- type <402> form <5>
     ---Purpose : Permits one or more displays for the
     --           entity labels of an entity

     class Planar;
     -- type <402> form <16>
     ---Purpose : Indicates that a collection of entities is coplanar. The
     --           entities may be geometric, annotative, and/or structural.

     class SegmentedViewsVisible;
     -- type <402> form <19>
     ---Purpose : Permits the association of display parameters with the
     --           segments of curves in a given view

     class Drawing;
     -- type <404> form <0>
     ---Purpose : Specifies a drawing as a collection of annotation entities
     --           defined in drawing space, and views which together
     --           constitute a single representation of a part

     class DrawingWithRotation;
     -- type <404> form <1>
     ---Purpose : Permits rotation, in addition to transformation and
     --           scaling, between the view and drawing coordinate systems

     class View;
     -- type <410> form <0>
     ---Purpose : Used to define a framework for specifying a viewing
     --           orientation of an object in three dimensional model
     --           space (X,Y,Z). The framework is also used to support
     --           the projection of all or part of model space onto a
     --           view volume.

     class RectArraySubfigure;
     -- type <412> form 0
     ---Purpose : Used to produce copies of an object called the base entity,
     --           arranging them in equally spaced rows and columns

     class CircArraySubfigure;
     -- type <414> form <0>
     ---Purpose : Used to produce copies of an object called the base entity,
     --           arranging them around the edge of an imaginary circle
     --           whose center and radius are specified

     class NetworkSubfigure;
     -- type <420> form <0>
     ---Purpose : Used to specify each instance of Network Subfigure
     --           definition Entity (Type <320>).

     class PerspectiveView;
     -- type <410> form <1>
     ---Purpose : Supports a perspective view.
     --           Any geometric projection is defined by a view plane
     --           and the projectors that pass through the view plane.
     --           Projectors can be visualized as rays of light that
     --           form an image by passing through the viewed object
     --           and striking the view plane.
     --           The projectors are defined via a point called the
     --           Center-of-Projection or the eye-point.
     --           A perspective view is formed by all projectors that
     --           emanate from the Center-of-Projection and pass
     --           through the view plane.

    	--    Tools for Entities    --

     class ToolConnectPoint;
     class ToolNetworkSubfigureDef;
     class ToolViewsVisible;
     class ToolViewsVisibleWithAttr;
     class ToolLabelDisplay;
     class ToolPlanar;
     class ToolSegmentedViewsVisible;
     class ToolDrawing;
     class ToolDrawingWithRotation;
     class ToolView;
     class ToolRectArraySubfigure;
     class ToolCircArraySubfigure;
     class ToolNetworkSubfigure;
     class ToolPerspectiveView;

     -- Definition and Exploitation of Entities defined in this Package

     class Protocol;
     class ReadWriteModule;
     class GeneralModule;
     class SpecificModule;

     -- The class instantiations :

     class  Array1OfConnectPoint   instantiates
    	  Array1 from TCollection (ConnectPoint);
     class  Array1OfViewKindEntity instantiates
          Array1 from TCollection (ViewKindEntity from IGESData);

     class HArray1OfConnectPoint   instantiates  HArray1 from TCollection
    	 (ConnectPoint,Array1OfConnectPoint);
     class HArray1OfViewKindEntity instantiates  HArray1 from TCollection
    	 (ViewKindEntity from IGESData,Array1OfViewKindEntity);

     -- Package Methods :

    Init;
    ---Purpose : Prepares dynamic data (Protocol, Modules) for this package

    Protocol  returns Protocol from IGESDraw;
    ---Purpose : Returns the Protocol for this Package

end IGESDraw;