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step_function.h
1 /* Copyright (C) 2004-2014 MBSim Development Team
2  *
3  * This library is free software; you can redistribute it and/or
4  * modify it under the terms of the GNU Lesser General Public
5  * License as published by the Free Software Foundation; either
6  * version 2.1 of the License, or (at your option) any later version.
7  *
8  * This library is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11  * Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public
14  * License along with this library; if not, write to the Free Software
15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16  *
17  * Contact: martin.o.foerg@gmail.com
18  */
19 
20 #ifndef _STEP_FUNCTION_H_
21 #define _STEP_FUNCTION_H_
22 
23 #include "mbsim/functions/function.h"
24 
25 namespace MBSim {
26 
27  template<typename Sig> class StepFunction;
28 
29  template<typename Ret, typename Arg>
30  class StepFunction<Ret(Arg)> : public Function<Ret(Arg)> {
31  private:
32  double stepTime, stepSize, stepInit;
33  public:
34  StepFunction() {}
35  StepFunction(double stepTime_, double stepSize_, double stepInit_=0.) : stepTime(stepTime_), stepSize(stepSize_), stepInit(stepInit_) { }
36  Ret operator()(const Arg &x) {
37  return FromDouble<Ret>::cast((ToDouble<Arg>::cast(x)>=stepTime)?stepSize:stepInit);
38  }
39  void initializeUsingXML(xercesc::DOMElement *element) {
40  xercesc::DOMElement *e=MBXMLUtils::E(element)->getFirstElementChildNamed(MBSIM%"time");
41  stepTime=Element::getDouble(e);
42  e=MBXMLUtils::E(element)->getFirstElementChildNamed(MBSIM%"size");
43  stepSize=Element::getDouble(e);
44  e=MBXMLUtils::E(element)->getFirstElementChildNamed(MBSIM%"init");
45  stepSize=Element::getDouble(e);
46  }
47  };
48 
49 }
50 
51 #endif
Definition: utils.h:153
Definition: step_function.h:27
Definition: utils.h:197
Definition: planar_contour.h:31

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