| b311480e |
1 | // Created on: 1992-01-20 |
| 2 | // Created by: Remi GILET |
| 3 | // Copyright (c) 1992-1999 Matra Datavision |
| 4 | // Copyright (c) 1999-2012 OPEN CASCADE SAS |
| 5 | // |
| 6 | // The content of this file is subject to the Open CASCADE Technology Public |
| 7 | // License Version 6.5 (the "License"). You may not use the content of this file |
| 8 | // except in compliance with the License. Please obtain a copy of the License |
| 9 | // at http://www.opencascade.org and read it completely before using this file. |
| 10 | // |
| 11 | // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
| 12 | // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
| 13 | // |
| 14 | // The Original Code and all software distributed under the License is |
| 15 | // distributed on an "AS IS" basis, without warranty of any kind, and the |
| 16 | // Initial Developer hereby disclaims all such warranties, including without |
| 17 | // limitation, any warranties of merchantability, fitness for a particular |
| 18 | // purpose or non-infringement. Please see the License for the specific terms |
| 19 | // and conditions governing the rights and limitations under the License. |
| 20 | |
| 7fd59977 |
21 | |
| 22 | #include <gp_Vec2d.hxx> |
| 23 | #include <gp_Pnt2d.hxx> |
| 24 | #include <gp_Vec.hxx> |
| 25 | #include <gp_Pnt.hxx> |
| 26 | |
| 27 | //========================================================================= |
| 28 | // soit P1 le point sur la courbe TheCurve d abscisse u. + |
| 29 | // soit C le point ThePoint. + |
| 30 | // Nous cherchons donc les zeros de la fonction suivante: + |
| 31 | // + |
| 32 | // --> --> + |
| 33 | // CP1 /\ T + |
| 34 | // --------------- = F(u) + |
| 35 | // ||CP1|| * ||T|| + |
| 36 | // + |
| 37 | // La derivee de cette fonction est : + |
| 38 | // CP1 /\ N (T.N)*((CP1/\T).((CP1/\T)) + |
| 39 | // f(u) = -------- - -------------------------------- + |
| 40 | // N.N N*N*N*CP1*CP1*CP1 + |
| 41 | //========================================================================= |
| 42 | |
| 43 | GccIter_FunctionTanCuPnt:: |
| 44 | GccIter_FunctionTanCuPnt(const TheCurve& C , |
| 45 | const gp_Pnt2d& Point ) { |
| 46 | TheCurv = C; |
| 47 | ThePoint = Point; |
| 48 | } |
| 49 | |
| 50 | |
| 51 | Standard_Boolean GccIter_FunctionTanCuPnt:: |
| 52 | Value (const Standard_Real X , |
| 53 | Standard_Real& Fval ) { |
| 54 | gp_Pnt2d Point; |
| 55 | gp_Vec2d Vect; |
| 56 | TheCurveTool::D1(TheCurv,X,Point,Vect); |
| 57 | Standard_Real NormeD1 = Vect.Magnitude(); |
| 58 | gp_Vec2d TheDirection(ThePoint,Point); |
| 59 | Standard_Real NormeDir = TheDirection.Magnitude(); |
| 60 | Fval = TheDirection.Crossed(Vect)/(NormeD1*NormeDir); |
| 61 | return Standard_True; |
| 62 | } |
| 63 | |
| 64 | Standard_Boolean GccIter_FunctionTanCuPnt:: |
| 65 | Derivative (const Standard_Real X , |
| 66 | Standard_Real& Deriv ) { |
| 67 | gp_Pnt2d Point; |
| 68 | gp_Vec2d Vec1; |
| 69 | gp_Vec2d Vec2; |
| 70 | TheCurveTool::D2(TheCurv,X,Point,Vec1,Vec2); |
| 71 | gp_Vec2d TheDirection(ThePoint.XY(),gp_XY(Point.XY())); |
| 72 | Standard_Real NormeD1 = Vec1.Magnitude(); |
| 73 | Standard_Real NormeDir = TheDirection.Magnitude(); |
| 74 | Deriv = TheDirection.Crossed(Vec2)/(NormeD1*NormeDir)- |
| 75 | (TheDirection.Crossed(Vec1)/(NormeD1*NormeDir))* |
| 76 | (Vec1.Dot(Vec2)/(NormeD1*NormeD1)+ |
| 77 | Vec1.Dot(TheDirection)/(NormeDir*NormeDir)); |
| 78 | return Standard_True; |
| 79 | } |
| 80 | |
| 81 | Standard_Boolean GccIter_FunctionTanCuPnt:: |
| 82 | Values (const Standard_Real X , |
| 83 | Standard_Real& Fval , |
| 84 | Standard_Real& Deriv ) { |
| 85 | gp_Pnt2d Point; |
| 86 | gp_Vec2d Vec1; |
| 87 | gp_Vec2d Vec2; |
| 88 | TheCurveTool::D2(TheCurv,X,Point,Vec1,Vec2); |
| 89 | gp_Vec2d TheDirection(ThePoint.XY(),gp_XY(Point.XY())); |
| 90 | Standard_Real NormeD1 = Vec1.Magnitude(); |
| 91 | Standard_Real NormeDir = TheDirection.Magnitude(); |
| 92 | Fval = TheDirection.Crossed(Vec1)/(NormeD1*NormeDir); |
| 93 | Deriv = TheDirection.Crossed(Vec2)/(NormeD1*NormeDir)- |
| 94 | (TheDirection.Crossed(Vec1)/(NormeD1*NormeDir))* |
| 95 | (Vec1.Dot(Vec2)/(NormeD1*NormeD1)+ |
| 96 | Vec1.Dot(TheDirection)/(NormeDir*NormeDir)); |
| 97 | |
| 98 | // cout << "U = "<< X << " F ="<< Fval <<" DF ="<< Deriv<<endl; |
| 99 | |
| 100 | return Standard_True; |
| 101 | } |
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