-- Created on: 1996-12-05
-- Created by: Flore Lantheaume/Odile Olivier
-- Copyright (c) 1996-1999 Matra Datavision
-- Copyright (c) 1999-2012 OPEN CASCADE SAS
--
-- The content of this file is subject to the Open CASCADE Technology Public
-- License Version 6.5 (the "License"). You may not use the content of this file
-- except in compliance with the License. Please obtain a copy of the License
-- at http://www.opencascade.org and read it completely before using this file.
--
-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
--
-- The Original Code and all software distributed under the License is
-- distributed on an "AS IS" basis, without warranty of any kind, and the
-- Initial Developer hereby disclaims all such warranties, including without
-- limitation, any warranties of merchantability, fitness for a particular
-- purpose or non-infringement. Please see the License for the specific terms
-- and conditions governing the rights and limitations under the License.



class Chamf2dDimension from AIS inherits Relation from AIS

	---Purpose: A framework to define display of 2D chamfers.
    	-- A chamfer is displayed with arrows and text. The text
    	-- gives the length of the chamfer if it is a symmetrical
    	-- chamfer, or the angle if it is not.


uses

    PresentationManager3d from PrsMgr,
    Presentation          from Prs3d,
    Selection             from SelectMgr,
    Shape                 from TopoDS,
    Pnt                   from gp,
    Plane                 from Geom,
    Dir                   from gp,
    Projector             from Prs3d,
    Transformation        from Geom,
    ExtendedString        from TCollection,
    ArrowSide             from DsgPrs,
    KindOfDimension       from AIS 
    
is
    Create (aFShape     : Shape          from TopoDS;
            aPlane        : Plane        from Geom;
	    aVal        : Real           from Standard;
	    aText       : ExtendedString from TCollection)	    
	---Purpose: Constructs the display object for 2D chamfers.
    	-- This object is defined by the face aFShape, the
    	-- dimension aVal, the plane aPlane and the text aText.
        
    returns mutable Chamf2dDimension from AIS;

    Create (aFShape     : Shape          from TopoDS;
            aPlane        : Plane        from Geom;
	    aVal        : Real           from Standard;
	    aText       : ExtendedString from TCollection;	    
	    aPosition   : Pnt            from gp;
	    aSymbolPrs  : ArrowSide      from DsgPrs;    
    	    anArrowSize : Real           from Standard = 0.0)
	---Purpose:  Constructs the display object for 2D chamfers.
    	-- This object is defined by the face aFShape, the plane
    	-- aPlane, the dimension aVal, the position aPosition,
    	-- the type of arrow aSymbolPrs with the size
    	-- anArrowSize, and the text aText.
    returns mutable Chamf2dDimension from AIS;

    KindOfDimension(me) 
	---Purpose: Indicates that we are concerned with a 2d length.
	---C++: inline
    returns KindOfDimension from AIS 
    is redefined;
    
    IsMovable(me) returns Boolean from Standard 
	---Purpose: Returns true if the 2d chamfer dimension is movable.
	---C++: inline    
    is redefined;
    
    -- Methods from PresentableObject
    
    Compute(me            : mutable;
  	    aPresentationManager: PresentationManager3d from PrsMgr;
    	    aPresentation : mutable Presentation from Prs3d;
    	    aMode         : Integer from Standard= 0) 
    is redefined static private;
    
    Compute(me:mutable;
    	        aProjector: Projector from Prs3d;
                aPresentation: mutable Presentation from Prs3d)
    is redefined static private;     

    Compute(me            : mutable;
    	    aProjector    : Projector from Prs3d;
    	    aTrsf         : Transformation from Geom;
	    aPresentation : mutable Presentation from Prs3d)
    is redefined;
	 ---Purpose: computes the presentation according to a point of view
	 --          given by <aProjector>. 
	 --          To be Used when the associated degenerated Presentations 
	 --          have been transformed by <aTrsf> which is not a Pure
	 --          Translation. The HLR Prs can't be deducted automatically
	 --          WARNING :<aTrsf> must be applied
	 --          to the object to display before computation  !!!

    ComputeSelection(me         : mutable;
    	    	     aSelection : mutable Selection from SelectMgr;
    	    	     aMode      : Integer from Standard)
    is redefined private;
    
    
    
fields

    myPntAttach : Pnt     from gp;
    myDir       : Dir     from gp;

end Chamf2dDimension;