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1 | // Created on: 1993-12-06 |
2 | // Created by: Jacques GOUSSARD |
3 | // Copyright (c) 1993-1999 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 <BRepBlend_BlendTool.ixx> |
23 | |
24 | #include <BRepClass_FaceClassifier.hxx> |
25 | #include <Extrema_EPCOfExtPC2d.hxx> |
26 | #include <Extrema_POnCurv2d.hxx> |
27 | #include <TopoDS_Vertex.hxx> |
28 | #include <TopoDS_Edge.hxx> |
29 | #include <BRep_Tool.hxx> |
30 | #include <Geom2d_Line.hxx> |
31 | #include <Geom2dAdaptor_Curve.hxx> |
32 | #include <gp_Dir2d.hxx> |
33 | #include <gp_Vec2d.hxx> |
34 | #include <Geom2dInt_GInter.hxx> |
35 | #include <IntRes2d_IntersectionPoint.hxx> |
36 | #include <BRepBlend_HCurve2dTool.hxx> |
37 | |
38 | |
39 | //======================================================================= |
40 | //function : Project |
41 | //purpose : Projection orthogonal d'un point sur une courbe |
42 | // pmn 8/10/98 : On retourne toujours une distance. (BUC60360) |
43 | //======================================================================= |
44 | Standard_Boolean BRepBlend_BlendTool::Project(const gp_Pnt2d& P, |
45 | const Handle(Adaptor3d_HSurface)&, |
46 | const Handle(Adaptor2d_HCurve2d)& C, |
47 | Standard_Real& Paramproj, |
48 | Standard_Real& Dist) |
49 | { |
50 | Paramproj = BRepBlend_HCurve2dTool::FirstParameter(C); |
51 | gp_Pnt2d P2d; |
52 | BRepBlend_HCurve2dTool::D0(C, Paramproj, P2d); |
53 | Dist = P2d.Distance(P); |
54 | |
55 | const Standard_Real t = BRepBlend_HCurve2dTool::LastParameter(C); |
56 | BRepBlend_HCurve2dTool::D0(C, t, P2d); |
57 | if (P2d.Distance(P) < Dist) { |
58 | Paramproj = t; |
59 | Dist = P2d.Distance(P); |
60 | } |
61 | |
62 | const Standard_Real epsX = 1.e-8; |
63 | const Standard_Integer Nbu = 20; |
64 | const Standard_Real Tol = 1.e-5; |
65 | Extrema_EPCOfExtPC2d extrema(P, C->Curve2d(), Nbu, epsX, Tol); |
66 | if (!extrema.IsDone()) |
67 | return Standard_True; |
68 | |
69 | const Standard_Integer Nbext = extrema.NbExt(); |
70 | Standard_Real aDist2 = Dist * Dist; |
71 | for (Standard_Integer i=1; i<=Nbext; i++) { |
72 | if (extrema.SquareDistance(i) < aDist2) { |
73 | aDist2 = extrema.SquareDistance(i); |
74 | Paramproj = extrema.Point(i).Parameter(); |
75 | } |
76 | } |
77 | Dist = sqrt (aDist2); |
78 | |
79 | return Standard_True; |
80 | } |
81 | |
82 | //======================================================================= |
83 | //function : Inters |
84 | //purpose : Intersection d'un segment avec une courbe |
85 | //======================================================================= |
86 | Standard_Boolean BRepBlend_BlendTool::Inters(const gp_Pnt2d& P1, |
87 | const gp_Pnt2d& P2, |
88 | const Handle(Adaptor3d_HSurface)&, |
89 | const Handle(Adaptor2d_HCurve2d)& C, |
90 | Standard_Real& Param, |
91 | Standard_Real& Dist) |
92 | { |
93 | const Standard_Real Tol = 1.e-8; |
94 | const gp_Vec2d v(P1,P2); |
95 | const Standard_Real mag = v.Magnitude(); |
96 | if(mag < Tol) return Standard_False; |
97 | |
98 | gp_Dir2d d(v); |
99 | Handle(Geom2d_Line) bid = new Geom2d_Line(P1,d); |
100 | Geom2dAdaptor_Curve seg(bid,-0.01*mag,1.01*mag); |
101 | |
102 | Geom2dInt_GInter inter(seg,C->Curve2d(),Tol,Tol); |
103 | if (!inter.IsDone()) |
104 | return Standard_False; |
105 | |
106 | const Standard_Integer Nbint = inter.NbPoints(); |
107 | if (Nbint == 0) |
108 | return Standard_False; |
109 | |
110 | IntRes2d_IntersectionPoint ip = inter.Point(1); |
111 | Param = ip.ParamOnSecond(); |
112 | Dist = P1.Distance(ip.Value()); |
113 | return Standard_True; |
114 | } |
115 | |
116 | Standard_Integer BRepBlend_BlendTool::NbSamplesV |
117 | (const Handle(Adaptor3d_HSurface)& S, |
118 | const Standard_Real u1, |
119 | const Standard_Real u2) |
120 | { |
121 | return 10; |
122 | } |
123 | |
124 | Standard_Integer BRepBlend_BlendTool::NbSamplesU |
125 | (const Handle(Adaptor3d_HSurface)& S, |
126 | const Standard_Real u1, |
127 | const Standard_Real u2) |
128 | { |
129 | return 10; |
130 | } |
131 | |
132 | void BRepBlend_BlendTool::Bounds(const Handle(Adaptor2d_HCurve2d)& A, |
133 | Standard_Real& Ufirst, |
134 | Standard_Real& Ulast) |
135 | { |
136 | Ufirst = BRepBlend_HCurve2dTool::FirstParameter(A); |
137 | Ulast = BRepBlend_HCurve2dTool::LastParameter(A); |
138 | } |