-- File:	GeomFill_Sweep.cdl
-- Created:	Thu Nov 20 16:05:06 1997
-- Author:	Philippe MANGIN
--		<pmn@sgi29>
---Copyright:	 Matra Datavision 1997


class Sweep from GeomFill 

	---Purpose: Geometrical Sweep Algorithm
	---Level: Advanced

uses 
   SectionLaw   from  GeomFill, 
   LocationLaw  from  GeomFill, 
   ApproxStyle  from  GeomFill, 
   Shape        from  GeomAbs,    
 
   Surface      from  Geom,  
   Curve        from  Geom2d,    
   HArray1OfCurve  from  TColGeom2d,  
   HArray2OfReal  from  TColStd
   
raises
    NotDone,   
    OutOfRange,   
    ConstructionError 
    
is 
   Create(Location :  LocationLaw  from  GeomFill; 
          WithKpart  :  Boolean  =  Standard_True)  
   returns Sweep  from  GeomFill;
     
   SetDomain(me : in  out;  First,  Last :  Real; 
                            SectionFirst,  SectionLast  :  Real); 
    ---Purpose: Set parametric information          
    --          [<First>, <Last>] Sets the parametric bound of the
    --                  sweeping surface to build.  
    --           <SectionFirst>, <SectionLast> gives coresponding
    --           bounds parameter on the section law of <First> and <Last>
    --          
    --           V-Iso on Sweeping Surface S(u,v) is defined by 
    --           Location(v) and Section(w) where 
    --           w = SectionFirst + (v - First) / (Last-First) 
    --             * (SectionLast - SectionFirst)
    --
    --           By default w = v, and First and Last are given by 
    --           First and Last parameter stored in LocationLaw.

   SetTolerance(me  :  in  out;   
    	    	Tol3d  :  Real; 
      	    	BoundTol   : Real  =  1.0; 
    	    	Tol2d      : Real  =  1.0e-5;   
                TolAngular : Real  =  1.0); 
   ---Purpose: Set Approximation Tolerance
    	   --    Tol3d : Tolerance to surface approximation
	   --    Tol2d : Tolerance used to perform curve approximation
	   --            Normaly the 2d curve are approximated with a 
           --            tolerance given by the resolution method define in 
	   --            <LocationLaw> but if this tolerance is too large Tol2d 
           --            is used.
           --    TolAngular : Tolerance (in radian) to control the angle 
           --                 beetween tangents on the section law and
           --                 tangent of iso-v on approximed surface

                     
    ExchangeUV(me)
    	---Purpose: returns true if sections are U-Iso
         -- This can be produce in some cases when <WithKpart> is True.
    returns Boolean from Standard
    is static;   
		      
   UReversed(me)   	 
    ---Purpose: returns true if Parametrisation sens in U is inverse of
    --          parametrisation sens of section (or of path if ExchangeUV)
    returns Boolean from Standard
    is static;	       

   VReversed(me)   	 
    ---Purpose: returns true if Parametrisation sens in V is inverse of
    --          parametrisation sens of path (or of section if ExchangeUV)
    returns Boolean from Standard
    is static;


   Build(me  :  in  out; 
         Section  :  SectionLaw  from  GeomFill;            
         Methode    : ApproxStyle = GeomFill_Location; 
         Continuity : Shape = GeomAbs_C2;
	 Degmax     : Integer = 10;
         Segmax     : Integer = 30)  
   ---Purpose: Build the Sweeep  Surface
   --    ApproxStyle defines Approximation Strategy
   --    - GeomFill_Section : The composed Function : Location X Section
   --                         is directly approximed.
   --    - GeomFill_Location : The location law is approximed, and the
   --                          SweepSurface is build algebric composition
   --                          of approximed location law and section law
   --                          This option is Ok, if Section.Surface() methode
   --                          is effective.
   --    Continuity : The continuity in v waiting on the surface 
   --    Degmax     : The maximum degree in v requiered on the surface 
   --    Segmax     : The maximum number of span in v requiered on 
   --                 the surface
   --  
   --      raise If Domain are infinite or Profile not Setted.
   raises  ConstructionError; 
    
   Build2d(me:in  out; 
           Continuity : Shape;
	   Degmax     : Integer;
           Segmax     : Integer) 
   returns  Boolean 
   is  private; 
    
   BuildAll(me:in  out; 
            Continuity : Shape;
	    Degmax     : Integer;
            Segmax     : Integer) 
   returns  Boolean 
   is  private;  
    
   BuildProduct(me:in  out; 
                Continuity : Shape;
	        Degmax     : Integer;
                Segmax     : Integer) 
   returns  Boolean 
   is  private;  
    
   BuildKPart(me:in  out) 
   returns  Boolean 
   is  private; 
    
   IsDone(me) 
    ---Purpose: Tells if the Surface is Buildt.          
   returns  Boolean;  
    
   ErrorOnSurface(me) 
    ---Purpose: Gets the Approximation  error.       
   returns  Real; 
    
   ErrorOnRestriction(me; IsFirst : Boolean; 
                      UError, VError : out Real)
    ---Purpose: Gets the Approximation  error. 
   raises  NotDone;
      
   ErrorOnTrace(me; IndexOfTrace  : Integer; 
                    UError, VError : out Real) 
    ---Purpose: Gets the Approximation error. 
    raises NotDone,  OutOfRange; 
        
   Surface(me)  
    returns Surface  from  Geom 
    raises  NotDone; 
     
   Restriction(me;  IsFirst :  Boolean)  
    returns Curve  from  Geom2d 
    raises  NotDone; 
      
   NumberOfTrace(me)   
   returns  Integer; 
   
   Trace(me;  IndexOfTrace  :  Integer)  
    returns Curve  from  Geom2d
    raises  NotDone,  OutOfRange;  


fields   
    First,  Last  :  Real;
    SFirst,  SLast:  Real;  
    Tol3d,  BoundTol,  Tol2d,  TolAngular  :  Real;     
    SError        :  Real;      
     
    myLoc      :  LocationLaw  from GeomFill;
    mySec      :  SectionLaw   from GeomFill;
    mySurface  :  Surface from Geom;
    myCurve2d  :  HArray1OfCurve  from TColGeom2d; 
    CError     :  HArray2OfReal  from  TColStd;      

    done         :  Boolean;
    myExchUV     :  Boolean from Standard; 
    isUReversed  :  Boolean;
    isVReversed  :  Boolean;
    myKPart      :  Boolean from Standard;
end Sweep;