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1 | // Created on: 1994-03-03 |
2 | // Created by: Yves FRICAUD |
3 | // Copyright (c) 1994-1999 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 | |
23 | #include <Bisector.ixx> |
24 | #include <gp_Pnt2d.hxx> |
25 | #include <gp_Vec2d.hxx> |
26 | |
27 | //====================================================================== |
28 | // function : IsConvex |
29 | // Purpose : |
30 | //====================================================================== |
31 | Standard_Boolean Bisector::IsConvex(const Handle(Geom2d_Curve)& Cu, |
32 | const Standard_Real Sign) |
33 | { |
34 | |
35 | Standard_Real U1 = (Cu->LastParameter() + Cu->FirstParameter())/2.; |
36 | gp_Pnt2d P1; |
37 | gp_Vec2d V1,V2; |
38 | Cu->D2(U1,P1,V1,V2); |
39 | Standard_Real Tol = 1.e-5; |
40 | if (Sign*(V1^V2) < Tol) return Standard_True; // <= 0. |
41 | else return Standard_False; |
42 | } |
43 | |