#par3d(windowRect = c(100,100,600,600))
rgl.bg(col = c('white', "#99bb99"), front = "lines", box=FALSE, sphere = TRUE)
rgl.lines(c(rx), c(0, 0), c(0, 0), col = "#000000")
#par3d(windowRect = c(100,100,600,600))
rgl.bg(col = c('white', "#99bb99"), front = "lines", box=FALSE, sphere = TRUE)
rgl.lines(c(rx), c(0, 0), c(0, 0), col = "#000000")