--
-- File      :  IGESDimen.cdl
-- Created   :  Sat 9 Jan 1993
-- Author    : CKY / Contract Toubro-Larsen ( Deepak PRABHU )
-- 
---Copyright : MATRA-DATAVISION  1993  
--

package IGESDimen

        ---Purpose : This package represents Entities applied to Dimensions
        --           ie. Annotation Entities and attached Properties and
        --           Associativities.

uses

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

is

        class CenterLine;                  
        -- Type 106,  Form 20-21
        ---Purpose : Is an entity appearing as crosshairs or as a
        --           construction between 2 positions

        class Section;                     
        -- Type 106,  Form 31-38
        ---Purpose : Contains information to display sectioned sides

        class WitnessLine;                 
        -- Type 106,  Form 40
        ---Purpose : Contains one or more straight line segments associated
        --           with drafting entities of various types

        class AngularDimension;            
        -- Type 202, Form 0
        ---Purpose : Used to dimension angles

        class CurveDimension;              
        -- Type 204, Form 0
        ---Purpose : Used to dimension curves

        class DiameterDimension;           
        -- Type 206, Form 0
        ---Purpose : Used for dimensioning diameters

        class FlagNote;                    
        -- Type 208, Form 0
        ---Purpose : Is label information formatted in different ways

        class GeneralLabel;                
        -- Type 210, Form 0
        ---Purpose : Used for general labeling with leaders

        class GeneralNote;                 
        -- Type 212, Form 0-8, 100-102, 105
        ---Purpose : Used for formatting boxed text in different ways

        class NewGeneralNote;              
        -- Type 213, Form 0
        ---Purpose : Further attributes for formatting text strings

        class LeaderArrow;                 
        -- Type 214, Form 1-12
        ---Purpose : Consists of one or more line segments except when
        --           leader is part of an angular dimension, with links to
        --           presumed text item

        class LinearDimension;            
        -- Type 216, Form 0
        ---Purpose : Used for linear dimensioning

        class OrdinateDimension;           
        -- Type 218, Form 0, 1
        ---Purpose : The ordinate dimension entity is used to 
        --           indicate dimensions from a common base line.
        --           Dimensioning is only permitted along the XT
        --           or YT axis.

        class PointDimension;              
        -- Type 220
        ---Purpose : A Point Dimension Entity consists of a leader, text, and 
        --           an optional circle or hexagon enclosing the text

        class RadiusDimension;             
        -- Type 222, Form 0, 1
        ---Purpose : A Radius Dimension Entity consists of a General Note, a
        --           leader, and an arc center point. A second form of this 
        --           entity accounts for the occasional need to have two
        --           leader entities referenced.

        class GeneralSymbol;               
        -- Type 228, Form 0
        ---Purpose : A General Symbol entity consists of zero or one(Form 0)
        --           or one(all other forms), one or more geometry entities
        --           which define a symbol, and zero, one or more associated
        --           leaders.

        class SectionedArea;               
        -- Type 230
        ---Purpose : A sectioned area is a portion of a design which is to be
        --           filled with a pattern of lines. 

        class DimensionedGeometry;         
        -- Type 402,  Form 13
        ---Purpose : This associativity links a dimension entity with the
        --           geometry entities it is dimensioning.
        --           This entity has been replaced by the new form of  
        --           Dimensioned Geometry Associativity Entity (Type 402, 
        --           Form 21) and should no longer be used by preprocessors.

        class NewDimensionedGeometry;      
        -- Type 402,  Form 21
        ---Purpose : This Associativity links a dimension entity with the 
        --           geometry entities it is dimensioning, so that later, 
        --           in the receiving database, the dimension can be 
        --           automatically recalculated and redrawn should the 
        --           geometry be changed.

        class DimensionUnits;              
        -- Type 406,  Form 28
        ---Purpose : The Dimension Units Property describes the units and 
        --           formatting details of the nominal value of a dimension.

        class DimensionTolerance;          
        -- Type 406,  Form 29
        ---Purpose : The Dimension Tolerance Property provides tolerance 
        --           information for a dimension. This information can be used 
        --           by the receiving system to regenerate the dimension.

        class DimensionDisplayData;        
        -- Type 406,  Form 30
        ---Purpose : The Dimensional Display Data Property is optional but when
        --           present must be referenced by a dimension entity. The 
        --           information it contains could be extracted from the text, 
        --           leader and witness line data with difficulty.

        class BasicDimension;              
        -- Type 406,  Form 31
        ---Purpose : The basic Dimension Property indicates that the referencing
        --           dimension entity is to be displayed with a box around text. 

    	--    Tools for Entities    --

        class ToolCenterLine;
        class ToolSection;
        class ToolWitnessLine;                 
        class ToolAngularDimension;            
        class ToolCurveDimension;              
        class ToolDiameterDimension;           
        class ToolFlagNote;                    
        class ToolGeneralLabel;                
        class ToolGeneralNote;                 
        class ToolNewGeneralNote;              
        class ToolLeaderArrow;                 
        class ToolLinearDimension;            
        class ToolOrdinateDimension;           
        class ToolPointDimension;              
        class ToolRadiusDimension;             
        class ToolGeneralSymbol;               
        class ToolSectionedArea;               
        class ToolDimensionedGeometry;         
        class ToolNewDimensionedGeometry;      
        class ToolDimensionUnits;              
        class ToolDimensionTolerance;          
        class ToolDimensionDisplayData;        
        class ToolBasicDimension;              

    -- Definition and Exploitation of Entities defined in this Package

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

    -- Instantiations :

    class  Array1OfLeaderArrow instantiates
    	 Array1 from TCollection (LeaderArrow);
    class  Array1OfGeneralNote instantiates
    	 Array1 from TCollection (GeneralNote);

    class HArray1OfLeaderArrow instantiates
    	HArray1 from TCollection (LeaderArrow,Array1OfLeaderArrow);
    class HArray1OfGeneralNote instantiates
    	HArray1 from TCollection (GeneralNote,Array1OfGeneralNote);

    -- Package Methods

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

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

end IGESDimen;