NAME

SYNOPSIS

DESCRIPTION

-v vertex_thresh

Merge vertices when they're closer than vertex_thresh apart; the default is .00001.

-V

Don't attempt to merge vertices.

-e edge_thresh

Merge edges where |sin(vertex_angle)| < edge_thresh; the default is When edges are merged, the corresponding vertex is removed.

-E

Don't attempt to merge edges. (4OFF edges are never merged.)

-f face_thresh

Merge faces sharing an edge where the faces are nearly coplanar: when |sin(angle_between_face_normal_vectors)| < face_thresh. The default is .03, or about two degrees. Note that merging can create faces which are concave polygons.

-F

Don't attempt to merge faces. (4OFF faces are never merged.)

-b

Produce an output file in .fe format for Brakke's Surface Evolver, instead of a new OFF file.

-d

Include debugging information as comments in the new OFF object. The comments indicate which vertices and faces in the original object correspond to which in the new one. Messages include:

# Vtx nnn->mmm

Merged vertices nnn and mmm (both indices in the original object).

# Merged face nnn into mmm (vertices vvv www) n1.n2 s

Faces nnn and mmm in the original object were merged; their common edge joined original vertices vvv and www. The cosine of the angle between the face normals was s.

vertex coordinates # newvertno [order] # oldvertno

Each vertex written appears with its new index, its order (number of edges touching that vertex), and its old index (index of a corresponding vertex in the original object).

face description # oldvertno ...

For each new face, with N vertices after reduction, the comment indicates N corresponding vertices in the original object.

AUTHOR

SEE ALSO

BUGS