gtsam/gtsam/discrete/DiscreteKey.cpp

52 lines
1.3 KiB
C++

/* ----------------------------------------------------------------------------
* GTSAM Copyright 2010, Georgia Tech Research Corporation,
* Atlanta, Georgia 30332-0415
* All Rights Reserved
* Authors: Frank Dellaert, et al. (see THANKS for the full author list)
* See LICENSE for the license information
* -------------------------------------------------------------------------- */
/**
* @file DiscreteKey.h
* @brief specialized key for discrete variables
* @author Frank Dellaert
* @date Feb 28, 2011
*/
#include <iostream>
#include <boost/format.hpp> // for key names
#include "DiscreteKey.h"
namespace gtsam {
using namespace std;
DiscreteKeys::DiscreteKeys(const vector<int>& cs) {
for (size_t i = 0; i < cs.size(); i++) {
string name = boost::str(boost::format("v%1%") % i);
push_back(DiscreteKey(i, cs[i]));
}
}
KeyVector DiscreteKeys::indices() const {
KeyVector js;
for (const DiscreteKey& key : *this) js.push_back(key.first);
return js;
}
map<Key, size_t> DiscreteKeys::cardinalities() const {
map<Key, size_t> cs;
cs.insert(begin(), end());
return cs;
}
DiscreteKeys operator&(const DiscreteKey& key1, const DiscreteKey& key2) {
DiscreteKeys keys(key1);
return keys & key2;
}
}