Here’s the Evaluate-tool:
http://pinktwins.com/disk/p5/Evaluate.zip

And I’m sorry to say that it calls a function that only exists in my version of processing, editor.clearConsole();. Remove this line from run() and recompile before trying to use it.

Processing sketch for the Java host, modified from sketch on this page:

http://pinktwins.com/disk/p5/PSJavascript.zip

Processing sketch with javascript to try it out:

http://pinktwins.com/disk/p5/js_code.zip

So, install Evaluate-tool, open the sketches, run java host, select all text on js_code, and do “Tools -> Evaluate Selection”.
(and fix the image path from js_code first).

Apologies for lack of polish, this is what I could manage with the time I have now. And js_code makes no sense visually, it just shows that Processing calls can be made, and drawing can be built up dynamically.

(Evaluate goes to Processing.app/Contents/Resources/Java/tools on a mac)

to get rid of ‘p5’ you can just use the Javascript ‘with’ keyword:

with(p5) {
background(255);
stroke(getColor(0, 0, 0, 64));
line(0, 0, 100, 100);
}

——- clip ——-

Server serv;
Client cl;

void draw() {
callIfNotNull(jsDraw);

cl = serv.available();
if(cl != null) {
jsinput = cl.readString();
try {
cx.evaluateString(scope, jsinput, “”, 1, null);
}
catch(Exception e) {
System.out.println(“Eval exception.”);
}
}
}

——- clip ——-

Then just send new js code to Server with Client. I made a Tool for this to select js code in a sketch, and hit cmd-. to evaluate it, SuperCollider style.

best,
j