Feature request: include rgl output automatically.

[dmurdoch]

It would be nice if rgl output was automatically included in reprex() output. This should be easy to do because knitr has supported rgl output for a while now. All that is needed is to run rgl::setupKnitr(autoprint = TRUE) and snapshots of output will be produced.

To set this automatically, reprex() could run the following code:

setHook(packageEvent("rgl", "onLoad"),
        function(...) rgl::setupKnitr(autoprint = TRUE))

I would be happy to submit a PR to do this if you give me a hint where it should happen. Here's what output would look like with this addition (though of course thesetHook() call won't be displayed if reprex() runs it internally):

setHook(packageEvent("rgl", "onLoad"),
        function(...) rgl::setupKnitr(autoprint = TRUE))
library(rgl)
plot3d(1:10, 1:10, 1:10)

^{Created on 2022-01-23 by the reprex package (v2.0.1)}

For anyone reading this and running reprex without this facility, you don't really need to do it as a hook, it's enough to run the line in the code you're reproducing, e.g.

rgl::setupKnitr(autoprint = TRUE))
library(rgl)
plot3d(1:10, 1:10, 1:10)

[jennybc]

The current plan is to probably handle this inside rgl itself. See the PR for discussion.

[dmurdoch]

Done now, included in rgl 0.108.21 (which is only available on Github at the moment).