This function is mainly for internal use, to work around a bug in macOS Catalina: if base plotting happens too quickly after opening RGL and the first call to quartz, R crashes.
This inserts a delay after the first call to open the
graphics device. The default is
no delay, unless on Catalina with no graphics device
currently open but the
quartz device set
as the default, when a 1 second delay will be added.
Use environment variable "RGL_SLOW_DEV = value" to set
a different default delay.
It works by changing the value of
so explicit calls to the device will not be affected.
It is called automatically when the rgl package is loaded.
setGraphicsDelay(delay = Sys.getenv("RGL_SLOW_DEV", 0), unixos = "none")
Number of seconds for the delay.
The name of the Unix OS. If set to
and the version is 19.0.0 or greater, the default delay is
changed to 1 second.
Called for the side effect of adding the delay to the first opening of the graphics device.