project3d: Stereographic projection
Description
Math from http://dogfeathers.com/java/3dproj.html
Usage
project3d(d3, length = par("din")[1] * 25.4, z0 = 300, d = 30)
Arguments
d3
3d numeric matrix giving position of points
z0
distance from eye to screen, mm
d
half interpupilary distance, mm