rgl.select:
Switch to select mode, and return the mouse position selected.
Description
Mostly for internal use, this function temporarily
installs a handler on a button of the mouse that will
return the mouse coordinates of one click and drag rectangle.
Usage
rgl.select(button = c("left", "middle", "right"))
Arguments
button
Which button to use?
Value
A vector of four coordinates: the X and Y coordinates of the start and end of the
dragged rectangle.
See Also
rgl.select3d, a version that allows the selection region to be used to
select points in the scene.