The STL format is a mesh format that is often used for 3D printing, it stores geometry information. It is known as stereolithography format. A binary and an ASCII version exist. This function reads the ASCII version.
read.fs.surface.stl.ascii(filepath, digits = 6L)
an `fs.surface` instance. The normals are available in the 'metadata' property.
full path to surface mesh file in STL format.
the precision (number of digits after decimal separator) to use when determining whether two x,y,z coords define the same vertex. This is used when the polygon soup is turned into an indexed mesh.
See https://en.wikipedia.org/wiki/STL_(file_format) for a format description.