-- File:	PathPointTool.cdl
-- Created:	Fri Sep 25 16:41:41 1992
-- Author:	Jacques GOUSSARD
--		<jag@sdsun2>
---Copyright:	 Matra Datavision 1992


class PathPointTool from IntSurf

uses Pnt       from gp,
     Vec       from gp,
     Dir2d     from gp,
     PathPoint from IntSurf

raises OutOfRange          from Standard,
       UndefinedDerivative from StdFail



is


    Value3d(myclass; PStart: PathPoint from IntSurf)
    
      	---Purpose: Returns the 3d coordinates of the starting point.

    	returns Pnt from gp;
	
	---C++: inline


    Value2d(myclass; PStart: PathPoint from IntSurf;
                     U, V: out Real from Standard);
    
	---Purpose: Returns the <U, V> parameters which are associated 
	--          with <P>
	--          it's the parameters which start the marching algorithm

	---C++: inline


    IsPassingPnt(myclass; PStart: PathPoint from IntSurf)
    
    	---Purpose: Returns True if the point is a point on a non-oriented
    	--          arc, which means that the intersection line does not
    	--          stop at such a point but just go through such a point.
    	--          IsPassingPnt is True when IsOnArc is True 

    	returns Boolean from Standard;

	---C++: inline


    IsTangent(myclass; PStart: PathPoint from IntSurf )
    
	---Purpose: Returns True if the surfaces are tangent at this point.
	--          IsTangent can be True when IsOnArc is True
	--          if IsPassingPnt is True and IsTangent is True,this point
	--          is a stopped point.

    	returns Boolean from Standard;

	---C++: inline


    Direction3d(myclass; PStart: PathPoint from IntSurf)
    
        ---Purpose: returns the tangent at the intersection in 3d space
        --          associated to <P>
        --         an exception is raised if IsTangent is true.

    	returns Vec from gp

	---C++: inline

    	raises UndefinedDerivative from StdFail;


    Direction2d(myclass; PStart: PathPoint from IntSurf)
    
        ---Purpose: returns the tangent at the intersection in the
        --          parametric space of the parametrized surface.This tangent
        --          is associated to the value2d
        --          la tangente a un sens signifiant (indique le sens de chemin
        --          ement)
        --          an exception is raised if IsTangent is true.

    	returns Dir2d from gp

	---C++: inline

	raises UndefinedDerivative from StdFail;


    Multiplicity(myclass; PStart: PathPoint from IntSurf)
    
    	---Purpose: Returns the multiplicity of the point i-e 
    	--          the number of auxillar parameters associated to the
    	--          point which the principal parameters are given by Value2d 

    	returns Integer from Standard;

	---C++: inline


    Parameters(myclass; PStart: PathPoint from IntSurf;
                        Mult: Integer from Standard;
                        U, V: out Real from Standard) 
	       
    	---Purpose: Parametric coordinates associated to the multiplicity.
    	--          An exception is raised if Mult<=0 or Mult>multiplicity.

	---C++: inline

    	raises OutOfRange from Standard;


end PathPointTool;