-- File:	DsgPrs_ShapeDirPresentation.cdl
-- Created:	Fri Oct  6 12:31:52 1995
-- Author:	Jing Cheng MEI
--		<mei@junon>
---Copyright:	 Matra Datavision 1995


class ShapeDirPresentation from DsgPrs

	---Purpose: A framework to define display of the normal to the
    	-- surface of a shape.

uses
    Shape  from TopoDS,
    Presentation from Prs3d,
    Drawer from Prs3d
    
is

    Add(myclass; prs: Presentation from Prs3d;
                 aDrawer: Drawer from Prs3d;
    	    	 shape: Shape from TopoDS; 
                 mode: Integer from Standard);
    	---Purpose: Adds the shape shape and the mode mode to the
    	-- presentation object prs.
    	-- The display attributes of the normal are defined by the
    	-- attribute manager aDrawer.
    	-- mode determines whether the first or the last point of
    	-- the normal is given to the presentation object. If the
    	-- first point: 0; if the last point, 1.
        
end ShapeDirPresentation;