void operator()(linestring_type& _a, const linestring_type& _b, JUNCTION _j)
{
if (_b.empty())
{
return;
}
if (_a.empty())
{
_a = _b;
return;
}
_j(_a,_b,_a);
_a.insert(_a.end(),_b.begin()+1,_b.end());
}
void operator()(const linestring_type& _a, const linestring_type& _b, output_type& _output, JUNCTION _j)
{
if (_a.empty())
{
_output = _b;
return;
}
if (_b.empty())
{
_output = _a;
return;
}
_output.insert(_output.end(),_a.begin(),_a.end()-1);
_j(_a,_b,_output);
_output.insert(_output.end(),_b.begin()+1,_b.end());
}
void operator()(const segment_type& _a, const linestring_type& _b, output_type& _out, JUNCTION _j)
{
if (_b.empty())
{
_out.push_back(_a.front());
_out.push_back(_a.back());
return;
}
_out.push_back(_a.front());
_j(_a,_b,_out);
_out.insert(_out.end(),_a.begin()+1,_a.end());
}