include/opencascade/TopClass_Classifier3d.gxx

0001 // Created on: 1994-03-30
0002 // Created by: Laurent BUCHARD
0003 // Copyright (c) 1994-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 //======================================================================
0018 TopClass_Classifier3d::TopClass_Classifier3d()
0019 : isSet(Standard_False),
0020   myParam(0.0),
0021   myTolerance(0.0),
0022   myState(TopAbs_UNKNOWN),
0023   hasIntersect(Standard_False)
0024 {
0025 }
0026
0027 //======================================================================
0028 void TopClass_Classifier3d::Reset(const gp_Lin&       L,
0029                                  const Standard_Real,
0030                                  const Standard_Real Tol) {
0031   myLin       = L;
0032   myParam     = RealLast();
0033   myTolerance = Tol;
0034   myState     = TopAbs_UNKNOWN;
0035   isSet       = Standard_True;
0036 }
0037 //======================================================================
0038 #include <IntCurveSurface_IntersectionPoint.hxx>
0039 #include <IntCurveSurface_TransitionOnCurve.hxx>
0040
0041 void TopClass_Classifier3d::Compare(const TopoDS_Face&        Face,
0042                                     const TopAbs_Orientation) {
0043   if(!isSet) {
0044 #ifdef OCCT_DEBUG
0045     std::cout<<" Call to TopClass_Classifier3d::Compare  without a Reset ! ";
0046 #endif
0047     return;
0048   }
0049
0050   hasIntersect = Standard_False;
0051   myIntersector.Perform(myLin,myParam,myTolerance,Face);
0052   if(myIntersector.IsDone()) {
0053     if(myIntersector.HasAPoint()) {
0054       hasIntersect = Standard_True;
0055       if(myIntersector.WParameter() < myParam) {
0056         myParam = myIntersector.WParameter();
0057         myFace  = myIntersector.Face();
0058         if(Abs(myParam)<=myTolerance) {
0059           //-- #########################################
0060 #ifdef OCCT_DEBUG
0061           std::cout<<" myParam = "<<myParam<<" ds TopClass_Classifier3d.gxx  "<<std::endl;
0062 #endif
0063           //-- #########################################
0064           myState = TopAbs_ON;
0065         }
0066         else {
0067           //-- The intersection point between the line and a face F of the solid
0068           //-- is in the face F or On a boundary of the face
0069           if(myIntersector.Transition() == IntCurveSurface_Out) {
0070             //-- The line is going from inside the solid to outside the solid.
0071             myState = TopAbs_IN;
0072           }
0073           else if(myIntersector.Transition() == IntCurveSurface_In) {
0074             myState = TopAbs_OUT;
0075           }
0076 #ifdef OCCT_DEBUG
0077     else {
0078             std::cout<<" -------- Probleme ds TopClass_Classifier3d.gxx "<<std::endl;
0079     }
0080 #endif
0081         }
0082       }
0083       else {
0084         //-- No point has been found by the myIntersector.
0085         //-- Or a Point has been found with a greater parameter.
0086       }
0087     } //-- myIntersector Has a point
0088     else {
0089       //-- The myIntersector failed.
0090     }
0091   } //-- Face has not been rejected
0092 }