`m[$modelId]_info.txt`

within
the model directory. Each line of the file has a field and a value.**mid**The model id for this model.**url**The url where this model was downloaded.**ref_url**The url for the referring web page. This may be blank if we found the url for the model directly.**format**The original format for the model before conversion to ply. wrl, 3ds, etc.**pid**An identifier included for historical purposes.**polygons**The number of polygons in the model, not necessarily triangulated.**connected_components**The number of connected components in the model.**average_dihedral_angle**The average dihedral angle weighted by the edge length.**bounding_box**The axis aligned bounding box of the model, specifying min and max values for the x, y, and z axes.**avg_depth**The average pixel depth complexity when the model is rendered with parallel projection from viewpoints at the vertices of an icosahedron.**center**The center of mass.**scale**The average distance from all points on the surfaces of all polygons to the center of mass.**principle_axes**The eigenvectors of the covariance matrix obtained by integrating the quadratic polynomials x_{i}*x_{j}with all x_{i}in {x, y, z}, over all points on the surfaces of all polynomials.**principle_values**The eigenvalues associated with the principle axes.

Below is an example:

mid: 789

url: http://www.amazing3d.com/free/stool3ds.zip

ref_url:

format: xthreexds

pid: 47610

polygons: 4808

connected_components: 9

average_dihedral_angle: 0.337324

bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.511587, ymax =
0.975, zmax = 0.513989

avg_depth: 1.259353

center: (0.267756,0.637098,0.269959)

scale: 0.639414

principle_axes: (0.001593,0.999999,-0.000106), (0.002350,0.000102,0.999997), (-0.999996,0.001593,0.002350)

principle_values: (0.084827,0.015384,0.015294)