void read_coords(Ring & ring, std::size_t num_points)
{
double x,y;
if (!needSwap_)
{
for (std::size_t i = 0; i < num_points; ++i)
{
read_double_ndr(wkb_ + pos_, x);
read_double_ndr(wkb_ + pos_ + 8, y);
ring.emplace_back(x,y);
pos_ += 16; // skip XY
if (Z) pos_ += 8;
if (M) pos_ += 8;
}
}
else
{
for (std::size_t i = 0; i < num_points; ++i)
{
read_double_xdr(wkb_ + pos_, x);
read_double_xdr(wkb_ + pos_ + 8, y);
ring.emplace_back(x,y);
pos_ += 16; // skip XY
if (Z) pos_ += 8;
if (M) pos_ += 8;
}
}
}
void read_coords_xyz(CoordinateArray& ar)
{
if (! needSwap_)
{
for (unsigned i = 0; i < ar.size(); ++i)
{
read_double_ndr(wkb_ + pos_, ar[i].x);
read_double_ndr(wkb_ + pos_ + 8, ar[i].y);
pos_ += 24; // skip XYZ
}
}
else
{
for (unsigned i = 0; i < ar.size(); ++i)
{
read_double_xdr(wkb_ + pos_, ar[i].x);
read_double_xdr(wkb_ + pos_ + 8, ar[i].y);
pos_ += 24; // skip XYZ
}
}
}
double read_double()
{
double d;
if (needSwap_)
{
read_double_xdr(wkb_ + pos_, d);
}
else
{
read_double_ndr(wkb_ + pos_, d);
}
pos_ += 8;
return d;
}
