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131 lines
4.1 KiB
C++
131 lines
4.1 KiB
C++
// Created on: 1994-04-01
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// Created by: Laurent BUCHARD
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// Copyright (c) 1994-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <BRepAdaptor_Surface.hxx>
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#include <BRepClass3d_Intersector3d.hxx>
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#include <BRepClass_FaceClassifier.hxx>
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#include <Geom_Line.hxx>
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#include <GeomAdaptor_Curve.hxx>
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#include <gp_Lin.hxx>
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#include <gp_Pnt.hxx>
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#include <gp_Pnt2d.hxx>
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#include <IntCurveSurface_HInter.hxx>
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#include <IntCurveSurface_IntersectionPoint.hxx>
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#include <TopoDS_Face.hxx>
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//============================================================================
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BRepClass3d_Intersector3d::BRepClass3d_Intersector3d()
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: U(0.0),
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V(0.0),
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W(0.0),
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done(Standard_False),
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hasapoint(Standard_False),
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state(TopAbs_UNKNOWN)
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{
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}
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//============================================================================
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void BRepClass3d_Intersector3d::Perform(const gp_Lin& L,
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const Standard_Real /*Prm*/,
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const Standard_Real Tol,
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const TopoDS_Face& Face) {
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IntCurveSurface_HInter HICS;
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BRepAdaptor_Surface surface;
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BRepClass_FaceClassifier classifier2d;
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Handle(Geom_Line) geomline = new Geom_Line(L);
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GeomAdaptor_Curve LL(geomline);
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surface.Initialize(Face,Standard_True);
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const Standard_Boolean IsUPer = surface.IsUPeriodic();
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const Standard_Boolean IsVPer = surface.IsVPeriodic();
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const Standard_Real uperiod = IsUPer ? surface.UPeriod() : 0.0;
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const Standard_Real vperiod = IsVPer ? surface.VPeriod() : 0.0;
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Standard_Real U1 = surface.FirstUParameter();
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Standard_Real U2 = surface.LastUParameter();
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Standard_Real V1 = surface.FirstVParameter();
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Standard_Real V2 = surface.LastVParameter();
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//--
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Handle(GeomAdaptor_Curve) HLL = new GeomAdaptor_Curve(LL);
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Handle(BRepAdaptor_Surface) Hsurface = new BRepAdaptor_Surface(surface);
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//--
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HICS.Perform(HLL,Hsurface);
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W=RealLast();
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if(HICS.IsDone()) {
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for(Standard_Integer index=HICS.NbPoints(); index>=1; index--) {
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gp_Pnt2d Puv(HICS.Point(index).U(),HICS.Point(index).V());
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Standard_Integer N1 = 0;
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Standard_Integer N2 = 0;
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Standard_Real X = Puv.X();
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Standard_Real Y = Puv.Y();
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if(IsUPer) {
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if(X > U2) {
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N1 = RealToInt( (X - U1) / uperiod );
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}
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if(X < U1) {
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N1 = RealToInt( (X - U2) / uperiod );
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}
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Puv.SetX(X - uperiod * N1);
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}
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if(IsVPer) {
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if(Y > V2) {
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N2 = RealToInt ( (Y - V1) / vperiod );
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}
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if(Y < V1) {
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N2 = RealToInt ( (Y - V2) / vperiod );
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}
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Puv.SetY(Y - vperiod * N2);
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}
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classifier2d.Perform(Face,Puv,Tol);
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TopAbs_State currentstate = classifier2d.State();
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if(currentstate==TopAbs_IN || currentstate==TopAbs_ON) {
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const IntCurveSurface_IntersectionPoint& HICSPoint = HICS.Point(index);
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Standard_Real HICSW = HICSPoint.W();
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// Modified by skv - Fri Mar 4 12:07:34 2005 OCC7966 Begin
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if((W > HICSW) && (HICSW>-Tol)) {
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// if(W > HICSW) {
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// Modified by skv - Fri Mar 4 12:07:34 2005 OCC7966 End
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hasapoint = Standard_True;
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U = HICSPoint.U();
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V = HICSPoint.V();
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W = HICSW;
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transition = HICSPoint.Transition();
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pnt = HICSPoint.Pnt();
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state = currentstate;
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face = Face;
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if(Face.Orientation()==TopAbs_REVERSED) {
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if(transition == IntCurveSurface_In)
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transition = IntCurveSurface_Out;
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else
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transition = IntCurveSurface_In;
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}
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}
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} //-- classifier state is IN or ON
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done = Standard_True;
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} //-- Loop on Intersection points.
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} //-- HICS.IsDone()
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}
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