Keeping corners straight.

Is there a setting for keeping straight lines , straight?

Hi Jonas Carlson

Is there a setting for keeping straight lines , straight?

This exist nowhere you get just so good results as you have captured the data, this is example of not good data ( missing overlap, bad angles, featureless subject and etc )
try use SIMPLIFY and play with the settings to get sharp corners ( try some low tris counts say 50-100k per model and again you need play with this settings as there is no direct rule as every model topology is different )