These options will be used on objects of class 'Layer'.
opts_Layer(constructor = c("default", "layer", "next", "environment"), ...)An object of class <constructive_options/constructive_options_Layer>
String. Name of the function used to construct the object, see Details section.
Additional options used by user defined constructors through the opts object
Depending on constructor, we construct the object as follows:
"default" : We attempt to use the function originally used to create the
plot.
"layer" : We use the ggplot2::layer() function
"environment" : Reconstruct the object using the general environment method
(which can be itself tweaked using opts_environment())
The latter constructor is the only one that reproduces the object exactly
since Layers are environments and environments can't be exactly copied (see ?opts_environment)