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1 | // Created on: 1997-03-28 |
| 2 | // Created by: Philippe MANGIN |
| 3 | // Copyright (c) 1997-1999 Matra Datavision |
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4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | // |
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6 | // This file is part of Open CASCADE Technology software library. |
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7 | // |
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8 | // This library is free software; you can redistribute it and/or modify it under |
| 9 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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10 | // by the Free Software Foundation, with special exception defined in the file |
| 11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 12 | // distribution for complete text of the license and disclaimer of any warranty. |
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13 | // |
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14 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 15 | // commercial license or contractual agreement. |
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16 | |
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17 | |
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18 | #include <ChFi3d_SearchSing.hxx> |
| 19 | #include <Geom_Curve.hxx> |
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20 | #include <gp_Pnt.hxx> |
| 21 | #include <gp_Vec.hxx> |
| 22 | |
| 23 | ChFi3d_SearchSing::ChFi3d_SearchSing(const Handle(Geom_Curve)& C1, |
| 24 | const Handle(Geom_Curve)& C2) |
| 25 | { |
| 26 | myC1 = C1; |
| 27 | myC2 = C2; |
| 28 | } |
| 29 | |
| 30 | |
| 31 | |
| 32 | Standard_Boolean ChFi3d_SearchSing::Value(const Standard_Real X, |
| 33 | Standard_Real& F) |
| 34 | { |
| 35 | gp_Pnt P1, P2; |
| 36 | gp_Vec V1, V2; |
| 37 | myC1->D1(X, P1, V1); |
| 38 | myC2->D1(X, P2, V2); |
| 39 | gp_Vec V(P1,P2); |
| 40 | F = V * (V2-V1); |
| 41 | return Standard_True; |
| 42 | } |
| 43 | |
| 44 | Standard_Boolean ChFi3d_SearchSing::Derivative(const Standard_Real X, |
| 45 | Standard_Real& D ) |
| 46 | { |
| 47 | gp_Pnt P1, P2; |
| 48 | gp_Vec V1, V2, W1, W2; |
| 49 | myC1->D2(X, P1, V1, W1); |
| 50 | myC2->D2(X, P2, V2, W2); |
| 51 | gp_Vec V(P1,P2), VPrim; |
| 52 | VPrim = V2 -V1; |
| 53 | D = VPrim.SquareMagnitude() + (V * (W2-W1)); |
| 54 | return Standard_True; |
| 55 | } |
| 56 | |
| 57 | Standard_Boolean ChFi3d_SearchSing::Values(const Standard_Real X, |
| 58 | Standard_Real& F, |
| 59 | Standard_Real& D ) |
| 60 | { |
| 61 | gp_Pnt P1, P2; |
| 62 | gp_Vec V1, V2, W1, W2; |
| 63 | myC1->D2(X, P1, V1, W1); |
| 64 | myC2->D2(X, P2, V2, W2); |
| 65 | gp_Vec V(P1,P2), VPrim; |
| 66 | VPrim = V2 -V1; |
| 67 | F = V * VPrim; |
| 68 | D = VPrim.SquareMagnitude() + (V * (W2-W1)); |
| 69 | return Standard_True; |
| 70 | } |
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