-- File:	P3D_Prs.cdl
-- Created:	Tue Jan 31 14:19:42 1995
-- Author:	Mister rmi
--		<rmi@pernox>
--Modified by   rob 11-mar-98 : Implement virtual methods from Graphic3d_Structure
--                              to optimize HLR Display...
---Copyright:	 Matra Datavision 1995

class Prs from PrsMgr inherits Presentation from Prs3d

uses
    Array2OfReal          from TColStd,
    StructureManager      from Graphic3d,
    Structure             from Graphic3d,
    DataStructureManager  from Graphic3d,
    TypeOfPresentation3d  from PrsMgr,
    Presentation3dPointer from PrsMgr
    
is
    Create(aStructureManager     : StructureManager from Graphic3d; 
    	   aPresentation         : Presentation3dPointer from PrsMgr; 
           aTypeOfPresentation3d : TypeOfPresentation3d from PrsMgr)
    returns mutable Prs from PrsMgr;
    
    Compute(me : mutable; aProjector: DataStructureManager from Graphic3d)
    returns Structure from Graphic3d
    is redefined static;

    Compute ( me	: mutable;
	      aProjector: DataStructureManager from Graphic3d;
	      AMatrix	: Array2OfReal from TColStd )
    returns Structure from Graphic3d is 
    redefined static;
    ---Purpose: the "degenerated" Structure is displayed with
    --          a transformation defined by <AMatrix>
    --          which is not a Pure Translation.
    --          We have to take in account this Transformation
    --          in the computation of hidden line removal...
    --          returns a filled Graphic Structure.



    Compute(me              : mutable; 
    	    aProjector      : DataStructureManager from Graphic3d;
	    ComputedStruct  : in out Structure from Graphic3d)
    is redefined static;
    ---Purpose: No need to return a structure, just to fill
    --          <ComputedStruct> ....


    Compute ( me	: mutable;
	      aProjector: DataStructureManager from Graphic3d;
	      AMatrix	: Array2OfReal from TColStd ;
    	      aStructure: in out Structure from Graphic3d )
    is redefined static;
    ---Purpose: No Need to return a Structure, just to
    --          Fill <aStructure>. The Trsf has to be taken in account
    --          in the computation (Rotation Part....)

    

fields 
    myPresentation3d: Presentation3dPointer from PrsMgr;
end Prs from PrsMgr;