[occt.git] / src / IntCurve / IntCurve_ProjectOnPConicTool.cdl

-- File:	ProjectOnPConicTool.cdl
-- Created:	Tue Oct 13 18:36:43 1992
-- Author:	Laurent BUCHARD
--		<lbr@sdsun2>
---Copyright:	 Matra Datavision 1992


private class ProjectOnPConicTool from IntCurve
    
    ---Purpose: This class provides a tool which computes the parameter
    --          of a point near a parametric conic.

uses Pnt2d     from gp,
     PConic    from IntCurve 
is
		 
    FindParameter(myclass; C:   PConic from IntCurve;
    	    	           Pnt: Pnt2d  from gp;
			   Tol: Real   from Standard)
			   
	--- Purpose:  Returns  the parameter V  of the  point   on the
	--  parametric  curve corresponding to  the  Point  Pnt.   The
	--  Correspondance between  Pnt  and the  point   P(V) on  the
	--  parametric    curve  must  be  coherent with    the way of
	--  determination  of the signed  distance between a point and
	--  the implicit curve.  Tol is the tolerance on  the distance
	--  between a point and the parametrised curve.  In that case,
	--  no bounds are given.  The research  of the rigth parameter
	--  has to  be  made  on the natural  parametric domain of the
	--  curve.
			   
    	returns Real from Standard;

	
    FindParameter(myclass; C:   PConic from IntCurve;
    	    	           Pnt: Pnt2d  from gp;
			   LowParameter,HighParameter,Tol: Real from Standard)
			   
	--- Purpose:  Returns the  parameter  V of the   point  on the
	--  parametric  curve corresponding  to  the   Point Pnt.  The
	--  Correspondance  between Pnt and  the   point  P(V) on  the
	--  parametric  curve  must  be  coherent   with the  way   of
	--  determination of the  signed distance between  a point and
	--  the implicit curve.  Tol  is the tolerance on the distance
	--  between a point and the  parametrised curve.  LowParameter
	--  and HighParameter give the  boundaries of the interval  in
	--  wich the parameter  certainly  lies.  These parameters are
	--  given to implement a  more efficient  algoritm. So,  it is
	--  not necessary to check   that the returned value  verifies
	--  LowParameter <= Value <= HighParameter.
			   
    	returns Real from Standard;
	
end ProjectOnPConicTool;
Commit	Line	Data
7fd59977	1	-- File: ProjectOnPConicTool.cdl
	2	-- Created: Tue Oct 13 18:36:43 1992
	3	-- Author: Laurent BUCHARD
	4	-- <lbr@sdsun2>
	5	---Copyright: Matra Datavision 1992
	6
	7
	8
	9
	10	private class ProjectOnPConicTool from IntCurve
	11
	12	---Purpose: This class provides a tool which computes the parameter
	13	-- of a point near a parametric conic.
	14
	15	uses Pnt2d from gp,
	16	PConic from IntCurve
	17	is
	18
	19	FindParameter(myclass; C: PConic from IntCurve;
	20	Pnt: Pnt2d from gp;
	21	Tol: Real from Standard)
	22
	23	--- Purpose: Returns the parameter V of the point on the
	24	-- parametric curve corresponding to the Point Pnt. The
	25	-- Correspondance between Pnt and the point P(V) on the
	26	-- parametric curve must be coherent with the way of
	27	-- determination of the signed distance between a point and
	28	-- the implicit curve. Tol is the tolerance on the distance
	29	-- between a point and the parametrised curve. In that case,
	30	-- no bounds are given. The research of the rigth parameter
	31	-- has to be made on the natural parametric domain of the
	32	-- curve.
	33
	34	returns Real from Standard;
	35
	36
	37	FindParameter(myclass; C: PConic from IntCurve;
	38	Pnt: Pnt2d from gp;
	39	LowParameter,HighParameter,Tol: Real from Standard)
	40
	41	--- Purpose: Returns the parameter V of the point on the
	42	-- parametric curve corresponding to the Point Pnt. The
	43	-- Correspondance between Pnt and the point P(V) on the
	44	-- parametric curve must be coherent with the way of
	45	-- determination of the signed distance between a point and
	46	-- the implicit curve. Tol is the tolerance on the distance
	47	-- between a point and the parametrised curve. LowParameter
	48	-- and HighParameter give the boundaries of the interval in
	49	-- wich the parameter certainly lies. These parameters are
	50	-- given to implement a more efficient algoritm. So, it is
	51	-- not necessary to check that the returned value verifies
	52	-- LowParameter <= Value <= HighParameter.
	53
	54	returns Real from Standard;
	55
	56	end ProjectOnPConicTool;