# Rpolyhedra

A 142 polyhedra Database scraped from PHD as R6 objects and ‘rgl’ visualizing capabilities. The PHD format was created to describe the geometric polyhedron definitions derived mathematically by Andrew Hume and by the Kaleido program of Zvi Har’El.

PHD files were generated using [http://www.netlib.org/poly2/readme] library which is no longer mantained. Althought the code is available, “archeological” programming skills are required for building it with current progamming languages standards.

Exploring PDH files

For navigating extdata/www.netlib.org/polyhedra/index.html

How to get started (Development version)

Install the R package using the following commands on the R console:

install.packages(c("futile.logger", "rgl", "stringr", "R6", "testthat", "devtools"))
devtools::install_github("qbotics/Rpolyhedra")
library(Rpolyhedra)

A simple example of 5 regular polyhedra

To get started execute the following commands:

polyhedra.2.draw <- getAvailablePolyhedra()[1:5]
n <- length(polyhedra.2.draw)
polyhedron.colors <- rainbow(n)
polyhedron.scale <- 5

open3d()
par3d(FOV = 1)
rgl.bg( sphere =FALSE, fogtype = "none", color=c("black"))
rgl.viewpoint(theta = 0,phi=0,zoom=0.8,fov=1)
i <- 1
for (polyhedron.name in polyhedra.2.draw) {
  polyhedron <- getPolyhedron(polyhedron.name)
  current.angle <- i/n * 2 * pi
  shape.rgl <- polyhedron$getRGLModel(1, c(polyhedron.scale * sin(current.angle),
                                           polyhedron.scale * cos(current.angle),
                                           0))
  shade3d(shape.rgl, color = polyhedron.colors[i])
  i <- i + 1
}

Troubleshooting

devtools

Ubuntu

apt-get install libcurl4-openssl-dev

Windows

Wait for CRAN version

OSX brew

brew install openssl

After, in R:

install.packages("devtools")

rgl

Ubuntu

sudo apt-get install r-cran-rgl