The 'Mesh Cleanup' function wraps a bunch of useful functionality into a single command aiding users in repairing problem geometry. Inevitably, even the most conscientious modelers will eventually create some geometry that contains collocated polygons, random floating vertices or other errors that can build up and may eventually cause rendering errors among other problems. The 'Mesh Cleanup' command is a one-stop-shop if you will of error eliminating power. Users can simply invoke the command found in the menu bar under "Geometry > Mesh Cleanup" to open the above dialogue panel. Users can then toggle the different options on or off if applicable and press 'OK' to apply the command to the currently selected geometry. The different options include--
Remove Floating Vertices: Removes single vertices that aren't connected to any polygons.
Remove One Point Polygons: Removes vertices that may be left behind when deleting polygon faces.
Remove Two Point Polygons: Removes edges of polygons where there is a visible line connecting vertices, but no faces.
Fix Duplicate Points in Polygons: Eliminates invalid duplicated vertices within a polygon, merging them into a single vertex.
Remove Colinear Vertices: Removes unnecessary extra vertices along an edge.
Fix Face Normal Vectors: Shifts the vertex order of face polygon in order to compute the correct normal vector. Resolves issues when first, second and last vertex are arranged in a straight line.
Merge Vertices: Combines vertices that have identical coordinates (collocated).
Merge Disco UVs: Each vertex can store multiple UV values, one set for each connected face. In cases where identical values are stored as multiple discontinuous values to a single vertex, this option eliminates them, merging the duplicates, optimizing the UV map.
Unify Polygons: Removes duplicated (collocated) polygons which share identical vertex map values and tags.
Force Unify: Works in conjunction with 'Unify Polygons' but removes all duplicated (collocated) polygons, ignoring vertex map values and tags.
