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[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
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#include <BRepClass3d_Intersector3d.ixx>
22
23#include <IntCurveSurface_IntersectionPoint.hxx>
24#include <gp_Lin.hxx>
25#include <TopoDS_Face.hxx>
26#include <TopAbs.hxx>
27
7fd59977 28#include <IntCurveSurface_HInter.hxx>
29#include <BRepAdaptor_HSurface.hxx>
30#include <Geom_Line.hxx>
31#include <gp_Pnt2d.hxx>
32#include <BRepClass_FaceClassifier.hxx>
33
34#include <GeomAdaptor_Curve.hxx>
35
36#include <GeomAdaptor_HCurve.hxx>
37#include <BRepAdaptor_HSurface.hxx>
38
39//============================================================================
40BRepClass3d_Intersector3d::BRepClass3d_Intersector3d()
41 : done(Standard_False),hasapoint(Standard_False)
42{
43}
44//============================================================================
45void BRepClass3d_Intersector3d::Perform(const gp_Lin& L,
46 const Standard_Real /*Prm*/,
47 const Standard_Real Tol,
48 const TopoDS_Face& Face) {
49
41194117
K
50 IntCurveSurface_HInter HICS;
51 BRepAdaptor_Surface surface;
52 BRepClass_FaceClassifier classifier2d;
7fd59977 53
54 Handle(Geom_Line) geomline = new Geom_Line(L);
55 GeomAdaptor_Curve LL(geomline);
56
57 surface.Initialize(Face,Standard_True);
58
773f53f1 59 const Standard_Boolean IsUPer = surface.IsUPeriodic();
60 const Standard_Boolean IsVPer = surface.IsVPeriodic();
61 const Standard_Real uperiod = IsUPer ? surface.UPeriod() : 0.0;
62 const Standard_Real vperiod = IsVPer ? surface.VPeriod() : 0.0;
63
64 Standard_Real U1 = surface.FirstUParameter();
65 Standard_Real U2 = surface.LastUParameter();
66 Standard_Real V1 = surface.FirstVParameter();
67 Standard_Real V2 = surface.LastVParameter();
7fd59977 68
69 //--
70 Handle(GeomAdaptor_HCurve) HLL = new GeomAdaptor_HCurve(LL);
71 Handle(BRepAdaptor_HSurface) Hsurface = new BRepAdaptor_HSurface(surface);
72 //--
73 HICS.Perform(HLL,Hsurface);
74
75 W=RealLast();
76 if(HICS.IsDone()) {
77 for(Standard_Integer index=HICS.NbPoints(); index>=1; index--) {
78 gp_Pnt2d Puv(HICS.Point(index).U(),HICS.Point(index).V());
79
80 Standard_Integer N1 = 0;
81 Standard_Integer N2 = 0;
82
83 Standard_Real X = Puv.X();
84 Standard_Real Y = Puv.Y();
85
86 if(IsUPer) {
87 if(X > U2) {
88 N1 = RealToInt( (X - U1) / uperiod );
89 }
90 if(X < U1) {
91 N1 = RealToInt( (X - U2) / uperiod );
92 }
93 Puv.SetX(X - uperiod * N1);
94 }
95
96 if(IsVPer) {
97 if(Y > V2) {
98 N2 = RealToInt ( (Y - V1) / vperiod );
99 }
100 if(Y < V1) {
101 N2 = RealToInt ( (Y - V2) / vperiod );
102 }
103 Puv.SetY(Y - vperiod * N2);
104 }
105
106 classifier2d.Perform(Face,Puv,Tol);
107 TopAbs_State currentstate = classifier2d.State();
108 if(currentstate==TopAbs_IN || currentstate==TopAbs_ON) {
109 const IntCurveSurface_IntersectionPoint& HICSPoint = HICS.Point(index);
110 Standard_Real HICSW = HICSPoint.W();
111// Modified by skv - Fri Mar 4 12:07:34 2005 OCC7966 Begin
112 if((W > HICSW) && (HICSW>-Tol)) {
113// if(W > HICSW) {
114// Modified by skv - Fri Mar 4 12:07:34 2005 OCC7966 End
115 hasapoint = Standard_True;
116 U = HICSPoint.U();
117 V = HICSPoint.V();
118 W = HICSW;
119 transition = HICSPoint.Transition();
120 pnt = HICSPoint.Pnt();
121 state = currentstate;
122 face = Face;
123 if(Face.Orientation()==TopAbs_REVERSED) {
124 if(transition == IntCurveSurface_In)
125 transition = IntCurveSurface_Out;
126 else
127 transition = IntCurveSurface_In;
128 }
129 }
130 } //-- classifier state is IN or ON
131 done = Standard_True;
132 } //-- Loop on Intersection points.
133 } //-- HICS.IsDone()
134}