Hi there, I just tried running a Processing program written in the Kotlin language , and I thought I would share here the steps in case anyone wants to try. This may not be very interesting if you are happy using the Processing IDE and your projects don’t grow very large. I wonder how many users in …

Sure but that wasn’t the question :slight_smile: Apparently in Kotlin you can add methods to any class directly from your code.

[image] hamoid: Apparently in Kotlin you can add methods to any class directly from your code. Even Java itself can add new methods (even new fields and constructors too) to a class via subclassing w/ extends. There’s also anonymous instantiation. Which customizes an individual object creati…

Kotlin, similar to C# and Gosu, provides the ability to extend a class with new functionality without having to inherit from the class or use any type of design pattern such as Decorator. This is done via special declarations called extensions . Kotlin supports extension functions and extension pro…

Now I’ve got it! You want to edit classes in such a way that all past & future instances of them have new members, right? :thinking: Indeed Java can’t do that! Creating a custom subclass doesn’t replace the original. :disappointed: Nor does it force other places instantiating the original class to…

Hi @hamoid Yes I am using Kotlin as main language for my processing projects. I really love the syntactic sugar it offers (extension methods, optional parameters, type inference …) and the null-safety, coroutines, a simpler functional interface for lists (more like LINQ from C#) and much more. But…

Thank you @cansik for posting your code! Very useful to learn this new approach :slight_smile: Question: I’m trying to inherit from PGraphics3D but apparently when I call LCircle.draw() the PGraphics has not been initialized (NPE at clear()). Any ideas? package com.hamoid import processing.core.P…

There is also Sam Pottingers fork works great for me:- [lambda]

Thanks! Yes, been keeping an eye on it. Although Processing core generally works fine with OpenJDK 11 as is. Was about to ship PraxisLIVE v4.3 with Java 11 but having some testing issues with crashes when closing windows on macOS. This is a bug in JOGL unfortunately so will still be there in Sam’s f…

Is it even possible to initialise a valid PGraphics without using the createGraphics(width, height) method? I have never inherited from PGraphics3D, I always decorate it.

Ah yes, I found the solution. I added it to my question :slight_smile: It works :slight_smile: ps. I found it thanks to the source code linked by @neilcsmith at Is it possible to extend the classes PGraphics/ PGraphics3D?

Writing Processing in Kotlin

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Writing Processing in Kotlin

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