-- Created on: 1992-03-03 -- Created by: Herve LEGRAND -- Copyright (c) 1992-1999 Matra Datavision -- Copyright (c) 1999-2012 OPEN CASCADE SAS -- -- The content of this file is subject to the Open CASCADE Technology Public -- License Version 6.5 (the "License"). You may not use the content of this file -- except in compliance with the License. Please obtain a copy of the License -- at http://www.opencascade.org and read it completely before using this file. -- -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. -- -- The Original Code and all software distributed under the License is -- distributed on an "AS IS" basis, without warranty of any kind, and the -- Initial Developer hereby disclaims all such warranties, including without -- limitation, any warranties of merchantability, fitness for a particular -- purpose or non-infringement. Please see the License for the specific terms -- and conditions governing the rights and limitations under the License. deferred generic class CurveTool from LProp (Curve as any; Pnt as any; Vec as any) is Value(myclass; C : Curve; U : Real; P : out Pnt); ---Purpose: Computes the point

of parameter on the curve . D1 (myclass; C : Curve; U : Real; P : out Pnt; V1 : out Vec); ---Purpose: Computes the point

and first derivative of -- parameter on the curve . D2 (myclass; C : Curve; U : Real; P : out Pnt; V1, V2 : out Vec); ---Purpose: Computes the point

, the first derivative and second -- derivative of parameter on the curve . D3 (myclass; C : Curve; U : Real; P : out Pnt; V1, V2, V3 : out Vec); ---Purpose: Computes the point

, the first derivative , the -- second derivative and third derivative of -- parameter on the curve . Continuity(myclass; C : Curve) returns Integer; ---Purpose: returns the order of continuity of the curve . -- returns 1 : first derivative only is computable -- returns 2 : first and second derivative only are computable. -- returns 3 : first, second and third are computable. FirstParameter(myclass; C : Curve) returns Real; ---Purpose: returns the first parameter bound of the curve. -- LastParameter(myclass; C : Curve) returns Real; ---Purpose: returns the last parameter bound of the curve. -- FirstParameter must be less than LastParamenter. end CurveTool;