-- File     : Prs2d_Drawer.cdl
-- Created  : February  2000
-- Author   : Tanya COOL
---Copyright: Matra Datavision 2000

class Drawer from Prs2d inherits TShared from MMgt

  --- Purpose: Graphic attributes management
  --           Qualifies how the presentation algorithms compute
  --           the presentation of a specific kind of object. 
  --           This includes for example color, width and type
  --           of lines...

uses

    NameOfColor         from Quantity,
    TypeOf2DObject      from Prs2d,
    AspectRoot          from Prs2d,
    AspectName          from Prs2d,
    DataMapOfAspectRoot from Prs2d
    
is
    Create returns mutable Drawer from Prs2d;
    ---Purpose: Initializes graphic attribute manager

    FindAspect( me; anAspectName: AspectName from Prs2d )
      returns AspectRoot from Prs2d is virtual;
    ---Level: Public
    ---Purpose: Returns a link with Prs2d_Drawer AspectName, 
    --          which provides settings for object "anAspectName" 
    --          used to display "anAspectName"
  	
    SetAspect( me: mutable;
               anAspectRoot: AspectRoot from Prs2d;
               anAspectName: AspectName from Prs2d );
    ---Level: Public
    ---Purpose: Sets the Aspect <anAspectRoot> of the Drawer
    
    InitAspectRootMap( me: mutable ) is private;
    ---Level: Internal
    ---Purpose: Initializes Aspect classes data map

   --******************************************************

    SetMaxParameterValue( me: mutable; Value: Real from Standard ) is virtual;
    ---Level: Public
    ---Purpose: defines the maximum value allowed for the first and last
    --          parameters of an infinite line.
    --          Default value: 500000. 
    
    MaxParameterValue( me ) returns Real from Standard is virtual;
    ---Level: Public
    ---Purpose: Indicates the maximum value allowed for the first and last
    --          parameters of an infinite line.


fields

    myDataMapAspectRoot: DataMapOfAspectRoot from Prs2d is protected;
    myMaxParameterValue: Real from Standard is protected;
   
end Drawer;