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Exploit the maximum float32/float64 precision in exported txt formats #34

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Merged
jlblancoc merged 1 commit into from
Jan 29, 2026
Merged

Exploit the maximum float32/float64 precision in exported txt formats #34

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12 changes: 6 additions & 6 deletions apps/mm2ply/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -271,15 +271,15 @@ void saveToPly(
}

// 4. Data Loop
auto write_val = [&](auto val)
auto write_val = [&](auto val, const char* fmt)
{
if (binary)
{
f.write(reinterpret_cast<const char*>(&val), sizeof(val));
}
else
{
f << +val << " ";
f << mrpt::format(fmt, val) << " ";
}
};

Expand All @@ -296,29 +296,29 @@ void saveToPly(
{
const auto& buf =
*static_cast<const mrpt::aligned_std_vector<float>*>(acc.bufPtr);
write_val(buf[i]);
write_val(buf[i], "%.8e");
break;
}
#if MRPT_VERSION >= 0x020f03 // 2.15.3
case FieldAccessor::DOUBLE:
{
const auto& buf =
*static_cast<const mrpt::aligned_std_vector<double>*>(acc.bufPtr);
write_val(buf[i]);
write_val(buf[i], "%.16le");
break;
}
case FieldAccessor::UINT16:
{
const auto& buf =
*static_cast<const mrpt::aligned_std_vector<uint16_t>*>(acc.bufPtr);
write_val(buf[i]);
write_val(buf[i], "%u");
break;
}
case FieldAccessor::UINT8:
{
const auto& buf =
*static_cast<const mrpt::aligned_std_vector<uint8_t>*>(acc.bufPtr);
write_val(buf[i]);
write_val(buf[i], "%i");
break;
}
#endif
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10 changes: 5 additions & 5 deletions apps/mm2txt/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -141,20 +141,20 @@ bool saveToTxt(
// Check coordinate fields
if (fieldName == "x")
{
mrpt::system::os::fprintf(f, "%f", xs.at(i));
mrpt::system::os::fprintf(f, "%.8f", xs.at(i));
}
else if (fieldName == "y")
{
mrpt::system::os::fprintf(f, "%f", ys.at(i));
mrpt::system::os::fprintf(f, "%.8f", ys.at(i));
}
else if (fieldName == "z")
{
mrpt::system::os::fprintf(f, "%f", zs.at(i));
mrpt::system::os::fprintf(f, "%.8f", zs.at(i));
}
// Check float fields
else if (floatFields.count(fieldName))
{
mrpt::system::os::fprintf(f, "%f", floatFields.at(fieldName).at(i));
mrpt::system::os::fprintf(f, "%.8e", floatFields.at(fieldName).at(i));
}
// Check uint16 fields
else if (uint16Fields.count(fieldName))
Expand All @@ -165,7 +165,7 @@ bool saveToTxt(
// Check double fields
else if (doubleFields.count(fieldName))
{
mrpt::system::os::fprintf(f, "%lf", doubleFields.at(fieldName).at(i));
mrpt::system::os::fprintf(f, "%.16le", doubleFields.at(fieldName).at(i));
}
// Check uint8 fields
else if (uint8Fields.count(fieldName))
Expand Down