-- File:      IntPatch_ImpImpIntersection.cdl
-- Created:   Thu May  7 08:47:45 1992
-- Author:    Jacques GOUSSARD
---Copyright: Matra Datavision 1992


class ImpImpIntersection from IntPatch
	     
	---Purpose: Implementation of the intersection between two
	--          quadric patches : Plane, Cone, Cylinder or Sphere.


uses HSurface from Adaptor3d,
     TopolTool from Adaptor3d,
     Point from IntPatch,
     SequenceOfPoint from IntPatch,
     TheSOnBounds from IntPatch,
     SequenceOfLine from IntPatch,
     Line           from IntPatch


raises NotDone           from StdFail,
       OutOfRange        from Standard,
       DomainError       from Standard,
       ConstructionError from Standard

is


    Create
    
    	returns ImpImpIntersection from IntPatch;


    Create (S1: HSurface from Adaptor3d; D1: TopolTool from Adaptor3d;
            S2: HSurface from Adaptor3d; D2: TopolTool from Adaptor3d;
            TolArc,TolTang: Real from Standard)
	    
	returns ImpImpIntersection from IntPatch
	
	raises ConstructionError from Standard;


    Perform (me: in out;
             S1: HSurface from Adaptor3d; D1: TopolTool from Adaptor3d;
             S2: HSurface from Adaptor3d; D2: TopolTool from Adaptor3d;
             TolArc,TolTang: Real from Standard)

	raises ConstructionError from Standard    

	is static;


    IsDone(me)
    
    	---Purpose: Returns True if the calculus was succesfull.

    	returns Boolean from Standard
	---C++: inline
	
    	is static;


    IsEmpty(me)
    
    	---Purpose: Returns true if the is no intersection.

    	returns Boolean from Standard
	---C++: inline

    	raises NotDone from StdFail

    	is static;


    TangentFaces(me)
    
	---Purpose: Returns True if the two patches are considered as
	--          entierly tangent, i-e every restriction arc of one
	--          patch is inside the geometric base of the otehr patch.

    	returns Boolean from Standard
	---C++: inline
	
	raises NotDone from StdFail
	
	is static;


    OppositeFaces(me)
    
	---Purpose: Returns True when the TangentFaces returns True and the
	--          normal vectors evaluated at a point on the first and the
	--          second surface are opposite. 
	--          The exception DomainError is raised if TangentFaces
	--          returns False.

    	returns Boolean from Standard
	---C++: inline
	
	raises NotDone     from StdFail,
               DomainError from Standard
	
	is static;


    NbPnts(me)
    
    	---Purpose: Returns the number of "single" points.

    	returns Integer from Standard
	---C++: inline

    	raises NotDone from StdFail
	
    	is static;


    Point(me; Index: Integer from Standard)
    
    	---Purpose: Returns the point of range Index.
    	--          An exception is raised if Index<=0 or Index>NbPnt.

    	returns Point from IntPatch
	---C++: return const&
	---C++: inline

    	raises NotDone    from StdFail,
               OutOfRange from Standard

    	is static;


    NbLines(me)
    
    	---Purpose: Returns the number of intersection lines.

    	returns Integer from Standard
	---C++: inline

    	raises NotDone from StdFail

    	is static;


    Line(me; Index: Integer from Standard)
    
    	---Purpose: Returns the line of range Index.
    	--          An exception is raised if Index<=0 or Index>NbLine.

    	returns Line from IntPatch
	---C++: inline
	---C++: return const&

    	raises NotDone    from StdFail,
               OutOfRange from Standard
	
    	is static;


fields

    done   : Boolean         from Standard;
    empt   : Boolean         from Standard;
    tgte   : Boolean         from Standard;
    oppo   : Boolean         from Standard;
    reverse: Boolean         from Standard;
    spnt   : SequenceOfPoint from IntPatch;
    slin   : SequenceOfLine  from IntPatch;
    solrst : TheSOnBounds    from IntPatch;

end ImpImpIntersection;