--
-- File      : IGESGraph.cdl
-- Created   : Mon 11 Jan 1993
-- Author    : CKY / Contract Toubro-Larsen (TCD)
--
---Copyright:
--

package IGESGraph

        ---Purpose : This package contains the group of classes necessary
        --           to define Graphic data among Structure Entities.
        --           (e.g., Fonts, Colors, Screen management ...)

uses

        Standard,
        TCollection,
        gp,
	TColgp,
	TColStd,
	Message,
        Interface,
        IGESData,
        IGESBasic

is

        class LineFontDefTemplate;
        -- type <304> form <1>
        ---Purpose : Line Font Def can be defined as a repetition of Template
        --           figure that is displayed at regularly spaced locations
        --           along a planar anchoring curve. The anchoring curve
        --           itself has no visual purpose.

        class LineFontDefPattern;
        -- type <304> form <2>
        ---Purpose : Line Font Def may be defined by repetition of a basic
        --           pattern of visible-blank(or, on-off) segments
        --           superimposed on a line or a curve. The line or curve
        --           is then displayed according to the basic pattern.

        class TextFontDef;
        -- type <310>
        ---Purpose : Used to define the appearance of characters in a text
        --           font. It may be used to describe a complete font or a
        --           modification to a subset of characters in another font.

        class TextDisplayTemplate;
        -- type <312> form <0, 1>
        ---Purpose : Used to set parameters for display of information
        --           which has been logically included in another entity
        --           as a parameter value.

        class Color;
        -- type <314>
        ---Purpose : The Color Definition Entity is used to communicate the
        --           relationship of primary colors to the intensity level of
        --           the respective graphics devices as a percent of full
        --           intensity range.

        class DefinitionLevel;
        -- type <406> form <1>
        ---Purpose : Indicates the no. of levels on which an entity is
        --           defined.

        class NominalSize;
        -- type <406> form <13>
        ---Purpose : Specifies a value, a name, and optionally a
        --           reference to an engineering standard.

        class DrawingSize;
        -- type <406> form <16>
        ---Purpose : Specifies the drawing size in drawing units. The
        --           origin of the drawing is defined to be (0,0) in
        --           drawing space.

        class DrawingUnits;
        -- type <406> form <17>
        ---Purpose : Specifies the drawing space units as outlined
        --           in the Drawing entity.

        class IntercharacterSpacing;
        -- type <406> form <18>
        ---Purpose : Specifies the gap between letters when fixed-pitch
        --           spacing is used.

        class LineFontPredefined;
        -- type <406> form <19>
        ---Purpose : Provides the ability to specify a line font pattern
        --           from a predefined list rather than from
        --           Directory Entry Field 4.

        class HighLight;
        -- type <406> form <20>
        ---Purpose : Attaches information that an entity is to be
        --           displayed in some system dependent manner.

        class Pick;
        -- type <406> form <21>
        ---Purpose : Attaches information that an entity may be picked
        --           by whatever pick device is used in the receiving
        --           system.

        class UniformRectGrid;
        -- type <406> form <22>
        ---Purpose : Stores sufficient information for the creation of
        --           a uniform rectangular grid within a drawing.

    	--    Tools for Entities    --

        class ToolLineFontDefTemplate;
        class ToolLineFontDefPattern;
        class ToolTextFontDef;
        class ToolTextDisplayTemplate;
        class ToolColor;
        class ToolDefinitionLevel;
        class ToolNominalSize;
        class ToolDrawingSize;
        class ToolDrawingUnits;
        class ToolIntercharacterSpacing;
        class ToolLineFontPredefined;
        class ToolHighLight;
        class ToolPick;
        class ToolUniformRectGrid;

    -- Definition and Exploitation of Entities defined in this Package

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

    -- The class instantiations :

    class  Array1OfColor  instantiates   Array1 from TCollection (Color);
    class  Array1OfTextDisplayTemplate instantiates
    	  Array1 from TCollection (TextDisplayTemplate);
    class  Array1OfTextFontDef         instantiates
    	  Array1 from TCollection (TextFontDef);

    class HArray1OfColor  instantiates  HArray1 from TCollection
    	     (Color,Array1OfColor);
    class HArray1OfTextDisplayTemplate instantiates HArray1 from TCollection
    	     (TextDisplayTemplate,Array1OfTextDisplayTemplate);
    class HArray1OfTextFontDef         instantiates HArray1 from TCollection
    	     (TextFontDef,Array1OfTextFontDef);

    -- Package Methods

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

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

end IGESGraph;