0024023: Revamp the OCCT Handle -- ambiguity
[occt.git] / src / BRepClass3d / BRepClass3d_Intersector3d.cxx
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b311480e 1// Created on: 1994-04-01
2// Created by: Laurent BUCHARD
3// Copyright (c) 1994-1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 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
973c2be1 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.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
b311480e 16
7fd59977 17#include <BRepClass3d_Intersector3d.ixx>
18
19#include <IntCurveSurface_IntersectionPoint.hxx>
20#include <gp_Lin.hxx>
21#include <TopoDS_Face.hxx>
22#include <TopAbs.hxx>
23
7fd59977 24#include <IntCurveSurface_HInter.hxx>
25#include <BRepAdaptor_HSurface.hxx>
26#include <Geom_Line.hxx>
27#include <gp_Pnt2d.hxx>
28#include <BRepClass_FaceClassifier.hxx>
29
30#include <GeomAdaptor_Curve.hxx>
31
32#include <GeomAdaptor_HCurve.hxx>
33#include <BRepAdaptor_HSurface.hxx>
34
35//============================================================================
36BRepClass3d_Intersector3d::BRepClass3d_Intersector3d()
37 : done(Standard_False),hasapoint(Standard_False)
38{
39}
40//============================================================================
41void BRepClass3d_Intersector3d::Perform(const gp_Lin& L,
42 const Standard_Real /*Prm*/,
43 const Standard_Real Tol,
44 const TopoDS_Face& Face) {
45
41194117
K
46 IntCurveSurface_HInter HICS;
47 BRepAdaptor_Surface surface;
48 BRepClass_FaceClassifier classifier2d;
7fd59977 49
50 Handle(Geom_Line) geomline = new Geom_Line(L);
51 GeomAdaptor_Curve LL(geomline);
52
53 surface.Initialize(Face,Standard_True);
54
773f53f1 55 const Standard_Boolean IsUPer = surface.IsUPeriodic();
56 const Standard_Boolean IsVPer = surface.IsVPeriodic();
57 const Standard_Real uperiod = IsUPer ? surface.UPeriod() : 0.0;
58 const Standard_Real vperiod = IsVPer ? surface.VPeriod() : 0.0;
59
60 Standard_Real U1 = surface.FirstUParameter();
61 Standard_Real U2 = surface.LastUParameter();
62 Standard_Real V1 = surface.FirstVParameter();
63 Standard_Real V2 = surface.LastVParameter();
7fd59977 64
65 //--
66 Handle(GeomAdaptor_HCurve) HLL = new GeomAdaptor_HCurve(LL);
67 Handle(BRepAdaptor_HSurface) Hsurface = new BRepAdaptor_HSurface(surface);
68 //--
69 HICS.Perform(HLL,Hsurface);
70
71 W=RealLast();
72 if(HICS.IsDone()) {
73 for(Standard_Integer index=HICS.NbPoints(); index>=1; index--) {
74 gp_Pnt2d Puv(HICS.Point(index).U(),HICS.Point(index).V());
75
76 Standard_Integer N1 = 0;
77 Standard_Integer N2 = 0;
78
79 Standard_Real X = Puv.X();
80 Standard_Real Y = Puv.Y();
81
82 if(IsUPer) {
83 if(X > U2) {
84 N1 = RealToInt( (X - U1) / uperiod );
85 }
86 if(X < U1) {
87 N1 = RealToInt( (X - U2) / uperiod );
88 }
89 Puv.SetX(X - uperiod * N1);
90 }
91
92 if(IsVPer) {
93 if(Y > V2) {
94 N2 = RealToInt ( (Y - V1) / vperiod );
95 }
96 if(Y < V1) {
97 N2 = RealToInt ( (Y - V2) / vperiod );
98 }
99 Puv.SetY(Y - vperiod * N2);
100 }
101
102 classifier2d.Perform(Face,Puv,Tol);
103 TopAbs_State currentstate = classifier2d.State();
104 if(currentstate==TopAbs_IN || currentstate==TopAbs_ON) {
105 const IntCurveSurface_IntersectionPoint& HICSPoint = HICS.Point(index);
106 Standard_Real HICSW = HICSPoint.W();
107// Modified by skv - Fri Mar 4 12:07:34 2005 OCC7966 Begin
108 if((W > HICSW) && (HICSW>-Tol)) {
109// if(W > HICSW) {
110// Modified by skv - Fri Mar 4 12:07:34 2005 OCC7966 End
111 hasapoint = Standard_True;
112 U = HICSPoint.U();
113 V = HICSPoint.V();
114 W = HICSW;
115 transition = HICSPoint.Transition();
116 pnt = HICSPoint.Pnt();
117 state = currentstate;
118 face = Face;
119 if(Face.Orientation()==TopAbs_REVERSED) {
120 if(transition == IntCurveSurface_In)
121 transition = IntCurveSurface_Out;
122 else
123 transition = IntCurveSurface_In;
124 }
125 }
126 } //-- classifier state is IN or ON
127 done = Standard_True;
128 } //-- Loop on Intersection points.
129 } //-- HICS.IsDone()
130}