Object of class "mesh3d"
with:
vb 4 x n matrix containing n vertices as homolougous coordinates
it 3 x m matrix containing vertex indices forming triangular faces
normals 4 x n matrix containing vertex normals (homologous coordinates)
in case the imported files contains face or vertex quality, these will be stored as vectors named $quality (for vertex quality) and $facequality
if the imported file contains vertex colors and readcolor = TRUE, these will be saved in $material$color according to "mesh3d" specifications.