src/lsystemparameters.cpp

   1 // Copyright (C) 2006 Erik Dahlberg
   2 //
   3 // This file is part of LSystem3d.
   4 //
   5 // LSystem3D is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9 //
  10 // LSystem3D is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with LSystem3D; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19
  20
  21
  22 #include <iostream>
  23 #include <string>
  24
  25 #include "lsystemparameters.h"
  26
  27 using namespace std;
  28
  29
  30
  31 /**
  32  * Constructor
  33  */
  34 LSystemParameters::LSystemParameters()
  35 {
  36 }
  37
  38
  39
  40 /**
  41  * Destructor
  42  */
  43 LSystemParameters::~LSystemParameters()
  44 {
  45 }
  46
  47
  48
  49 /**
  50  * Load parameters from xml file
  51  * @param lsystem put parameters into this L-system
  52  * @param path path to xml file
  53  */
  54 void LSystemParameters::load(LindenmayerSystem *lsystem, string path)
  55 {
  56     if (lsystem)
  57     {
  58         try
  59         {
  60             // load
  61             loadFromDisk(path);
  62
  63             // axiom
  64             findChild("axiom");
  65             lsystem->setAxiom(getString());
  66
  67             // rules
  68             if (findChild("rule"))
  69             {
  70                 do
  71                 {
  72                     lsystem->setRule(getAttribute("name"), getString());
  73                 } while (findNextChild());
  74             }
  75
  76             // angle
  77             findChild("angle");
  78             lsystem->setAngle(getNumber());
  79
  80             // iterations
  81             findChild("iterations");
  82             lsystem->setNumIterations((int)getNumber());
  83         }
  84         catch (xmlpp::exception e)
  85         {
  86             cerr << "LSystemParameters::load(): " << e.what() << endl;
  87         }
  88     }
  89     else
  90     {
  91         cerr << "invalid L-system" << endl;
  92     }
  93 }
  94
  95
  96
  97 /**
  98  * Save parameters to xml file
  99  * @param lsystem get parameters from this L-system
 100  * @param path path to xml file
 101  */
 102 void LSystemParameters::save(LindenmayerSystem *lsystem, string path)
 103 {
 104     if (lsystem && !lsystem->getAxiom().empty() && !lsystem->getRules().empty())
 105     {
 106         // new document with root node
 107         createDocumentWithRoot("lsystem");
 108
 109         // axiom
 110         addChildToRoot("axiom");
 111         addString(lsystem->getAxiom());
 112
 113         // rules
 114         map<string,string> rules = lsystem->getRules();
 115         map<string,string>::iterator currentRule;
 116         for (currentRule = rules.begin(); currentRule != rules.end(); currentRule++)
 117         {
 118             addChildToRoot("rule");
 119             addString(currentRule->second);
 120             addAttribute("name", currentRule->first);
 121         }
 122
 123         // angle
 124         addChildToRoot("angle");
 125         addNumber(lsystem->getAngle());
 126
 127         // iterations
 128         addChildToRoot("iterations");
 129         addNumber(lsystem->getNumIterations());
 130
 131         // save
 132         saveToDisk(path);
 133     }
 134     else
 135     {
 136         cerr << "invalid L-system" << endl;
 137     }
 138 }