Isotropic Remesh mesh operation restructures the topology of the input mesh so that all edges have the same size. In doing so, some small details and features of the mesh might be distorted or removed. To mitigate thiss, there are two parameters in the Isotropic Remesh Settings to prioritize geometric consistency over isotropy. They are
Collapse Threshold and
Geometric Feature Angle In Degrees.
Collapse Threshold parameter collapses edges based on the
Target Edge Size in favor of preserving geometric features over isotropy. By lowering the threshold, smaller details will be preserved.
Notice how these tendrils are losing their cohesiveness when the Collapse Threshold is at the default of
By lowering the percentage to
20%, the volume of the tendrils is preserved.
Geometric Feature Angle In Degrees parameter preserves the geometric features of the input mesh based on the chosen dihedral angle. Feature angles above the threshold will be preserved. This is useful when the mesh has many sharp angles such as a hard surface object.
With 'Geometric Feature Angle In Degrees' turned off, the edges appear distorted.
By setting the angle to "5" degrees. The angles are preserved.