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## ====================================================================
## A local environment for non user-visible data,
## ====================================================================
.plot3D <- new.env()
.plot3D$plist <- list()
.plot3D$refresh <- TRUE
refresh <- function(set = TRUE) # internal function...
.plot3D$refresh <- set
getplist <- function()
.plot3D$plist
setplist <- function(plist)
.plot3D$plist <- plist
initplist <- function(add) {
if (add)
plist <- getplist()
else
plist <- NULL
# test for setting the correct plt parameters:
if (!add & .plot3D$refresh) {
plot.new()
par(new = TRUE)
}
plist
}
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