An object of class 'mesh3d' and 'shape3d' with calculated normals

plyFile

A function that calculates Dirichlet normal energy following the method of Bunn et
al. (2011) Comparing Dirichlet normal surface energy of tooth corwns, a new
technique of molar shape quantification for dietary inference, with previous methods
in isolation and in combination. Am J Phys Anthropol 145:247-261 doi: 10.1002
ajpa.21489

Surface topography calculations of Dirichlet's normal energy, relief index, and orientation patch count for teeth using scans of enamel caps. Importantly, for the relief index and orientation patch count calculations to work, the scanned tooth files must be oriented with the occlusal plane parallel to the x and y axes, and perpendicular to the z axis. The files should also be simplified, and smoothed in some other software prior to uploading into R. 

DNE: Calculate Dirichlet normal energy of a surface

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