00001 /* @HEADER@ */ 00002 // ************************************************************************ 00003 // 00004 // Sundance 00005 // Copyright (2005) Sandia Corporation 00006 // 00007 // Copyright (year first published) Sandia Corporation. Under the terms 00008 // of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government 00009 // retains certain rights in this software. 00010 // 00011 // This library is free software; you can redistribute it and/or modify 00012 // it under the terms of the GNU Lesser General Public License as 00013 // published by the Free Software Foundation; either version 2.1 of the 00014 // License, or (at your option) any later version. 00015 // 00016 // This library is distributed in the hope that it will be useful, but 00017 // WITHOUT ANY WARRANTY; without even the implied warranty of 00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00019 // Lesser General Public License for more details. 00020 // 00021 // You should have received a copy of the GNU Lesser General Public 00022 // License along with this library; if not, write to the Free Software 00023 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00024 // USA 00025 // Questions? Contact Kevin Long (krlong@sandia.gov), 00026 // Sandia National Laboratories, Livermore, California, USA 00027 // 00028 // ************************************************************************ 00029 /* @HEADER@ */ 00030 00031 #include "SundanceEventDetector.hpp" 00032 #include "SundanceDiscreteFunction.hpp" 00033 #include "PlayaOut.hpp" 00034 #include "PlayaTabs.hpp" 00035 00036 namespace Sundance 00037 { 00038 00039 bool ThresholdEventDetector::checkForEvent( 00040 const double& t1, const Expr& u1, 00041 const double& t2, const Expr& u2) 00042 { 00043 if (foundEvent()) return false; 00044 00045 Vector<double> x1 = getDiscreteFunctionVector(u1); 00046 Vector<double> x2 = getDiscreteFunctionVector(u2); 00047 00048 if (eventType_==AllAbove || eventType_==AnyBelow) 00049 { 00050 double a1 = x1.min()-threshold_; 00051 double a2 = x2.min()-threshold_; 00052 if (a1*a2 <= 0) 00053 { 00054 double t = t1 - a1*(t2-t1)/(a2-a1); 00055 eventTime_ = t; 00056 gotIt_ = true; 00057 return true; 00058 } 00059 } 00060 else 00061 { 00062 double a1 = x1.max()-threshold_; 00063 double a2 = x2.max()-threshold_; 00064 if (a1*a2 <= 0) 00065 { 00066 double t = t1 - a1*(t2-t1)/(a2-a1); 00067 eventTime_ = t; 00068 gotIt_ = true; 00069 return true; 00070 } 00071 } 00072 return false; 00073 } 00074 00075 }