LabelMap.icc

#if !defined(ISCE_UNWRAP_ICU_LABELMAP_ICC)
#error "LabelMap.icc is an implementation detail of class LabelMap"
#endif
 
#include <cstdint> // UINT8_MAX
#include <exception> // std::overflow_error
 
namespace isce3::unwrap::icu
{
 
inline
LabelMap::LabelMap()
{
    // Init with a single unused element so the first label used is 1 (0 is not 
    // a valid label).
    _labels.resize(1);
}
 
inline
uint8_t LabelMap::nextlabel()
{
    if (_labels.size() > UINT8_MAX)
    {
        throw std::overflow_error("exceeded max connected components\n");
    }
 
    uint8_t newlabel = _labels.size();
    _labels.push_back(newlabel);
    return newlabel;
}
 
inline uint8_t LabelMap::getlabel(const uint8_t l) const { return _labels[l]; }
 
inline
void LabelMap::setlabel(const uint8_t oldlabel, const uint8_t newlabel)
{
    for (size_t l = 1; l < _labels.size(); ++l)
    {
        if (_labels[l] == oldlabel) { _labels[l] = newlabel; }
    }
}
 
inline size_t LabelMap::size() const { return _labels.size(); }
 
}