[orx-g-code] Add g-code tools for pen plotting by adriandieter · Pull Request #285 · openrndr/orx

adriandieter · 2022-12-30T17:02:20Z

An extension to generate g-code from compositions, best used in a live coding environment. The intended use is for a pen plotter, but code to drive a laser cutter or other CNC machines could be generated as well.
I have used the foundation of this for a while now and tried to wrap everything in an more general and easy to use interface.
See the README and demo files on how to use.

Feedback is appreciated ✨

hamoid · 2022-12-30T18:06:23Z

Oh nice!! :-) I will take a look in the next days. I do have an Axidraw. Do you know if it's compatible? With what kind of devices have you tried your orx?

adriandieter · 2022-12-30T20:25:11Z

From a quick search it looks like the Axidraw does not speak g-code at all natively 🤷‍♂️
I am using a GkDraw only tested with that. It uses grbl firmware. So I guess any similar Axidraw knockoff plotter would be compatible.

However the implementation should allow for customization to any g-code dialect or device. So a 3d printer fitted with a pen holder would work as well 🤔

adriandieter · 2023-01-27T14:30:26Z

Thanks @Vechro for the suggestions on the build files! That's where I was a bit lost and didn't know what to follow/what is best practice. Also updated the test files.

I'd like to keep this as a draft for a bit and continue using it with that interface before merging. Just to prevent any bigger changes once merged.
Do you think the design of the Plot extension matches other extensions or see anything that could be improved? I am not too happy with how the configuration/setup works.

Vechro · 2023-01-27T15:43:47Z

Maybe @edwinRNDR can answer that. I can mostly offer advice on the build scripts.

adriandieter · 2023-11-12T21:22:27Z

I did continue using it a bit since I opened the PR and didn't see any issues with the API so far. Think this is ready to be merged 🤔

hamoid · 2024-01-23T17:35:30Z

+        extend(plot) {
+            generator = basicGrblSetup()
+
+            // Set output files to be exported to tmp


tmp -> /tmp ?

hamoid · 2024-01-23T17:35:52Z

+            generator = basicGrblSetup()
+
+            // Set output files to be exported to tmp
+            // "g" to export g-code.


"g" -> Press "g" ?

hamoid · 2024-01-23T17:36:15Z

+            // Export each layer to separate file
+            layerMode = LayerMode.MULTI_FILE
+
+            // Set output files to be exported to tmp


tmp -> /tmp

hamoid · 2024-01-23T17:36:30Z

+            layerMode = LayerMode.MULTI_FILE
+
+            // Set output files to be exported to tmp
+            // "g" to export g-code.


"g" -> Press "g"

hamoid · 2024-01-23T17:38:25Z

Sorry for the long latency! I'm writing a post in the guide about pen plotters and it motivated me to look into this. It would be good to offer both SVG and g-code.

hamoid · 2024-01-23T17:40:06Z

Do you think the design of the Plot extension matches other extensions or see anything that could be improved? I am not too happy with how the configuration/setup works.

Maybe @edwinRNDR has now more time to say something about this?

linde9821 · 2025-11-30T13:12:45Z

Any news? Would be a cool feature

hamoid · 2025-11-30T13:26:29Z

Are you familiar enough with OPENRNDR @linde9821 to give it a try and report back your impressions? You would need to build a local snapshot of OPENRNDR and ORX, including this PR. You wouldn't need the openrndr-template, as you could use the demos under this ORX.

linde9821 · 2025-12-02T17:06:11Z

@hamoid Sorry but Iam not familiar enough with OPENRNDR

hamoid · 2025-12-02T21:28:52Z

No problem. Do you have a device or software that reads g-code to test?

…egment

adriandieter · 2025-12-15T13:59:50Z

Thanks for the review and sorry for the late response. Lost the focus on this. I'll look into your suggestions and might change the interfaces a bit.

- add kotlin-multiplatform conventions plugin with id - Composition & CompositionDrawer moved to orx - Segment renamed to Segment2D - use oshai instead of mu KotlinLogging - remove runtimeOnly(libs.slf4j.simple) dependencies

hamoid · 2025-12-15T19:01:38Z

Nice to hear @adriandieter :) Let me know if you need any feedback.

I've been adding a /** comment */ to all demos in orx (I'm almost done) between the imports block and fun main() describing what features the demo tries to demonstrate. It would be great to add such comments to the orx-g-code :-) You can find some examples at 25a01ad

Adds GeneratorContext class to make composition traversal more flexible. Improves options for custom Gcode generators.

It is replaced by the BasicGrblGenerator.

adriandieter · 2025-12-16T19:18:34Z

@hamoid implemented my changes and added some demos and documentation.

This makes it much easier to customize how the g-code is generated. Also got it working with my existing projects, so should be good to go 🙌

hamoid

Looking good. Only left some minor comments.

adriandieter · 2026-01-03T18:49:05Z

Thanks for the review and approval!

Can we merge this soon? It's been open for so long and it would be nice, to have it closed done 🙏

edwinRNDR · 2026-01-28T10:59:42Z

Hey this looks super neat! apologies for taking so long for merging it in. @adriandieter would you like me to add you to the openrndr organization and allow you to create branches for orx-g-code?

hamoid · 2026-01-28T11:53:59Z

@adriandieter Finally merged :-)

Some small issues in the readme:

first image is empty. But this looks OK: https://github.com/openrndr/orx/blob/master/orx-g-code/images/DemoInteractivePlotKt.png?raw=true ...
two links in the Generator section return 404

adriandieter · 2026-01-28T12:01:47Z

@edwinRNDR sure, sounds good!
Especially since @hamoid found some issues already ☝️

Vechro reviewed Jan 13, 2023

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Comment thread orx-g-code/build.gradle.kts Outdated

Comment thread orx-g-code/build.gradle.kts Outdated

Comment thread orx-g-code/src/jvmTest/kotlin/TestGenerator.kt Outdated

Comment thread orx-g-code/build.gradle.kts Outdated

adriandieter force-pushed the orx-g-code branch from 450d39f to f49bbc9 Compare January 27, 2023 11:26

edwinRNDR added question Further information is requested enhancement labels Apr 20, 2023

adriandieter marked this pull request as ready for review November 12, 2023 20:48

adriandieter marked this pull request as draft November 12, 2023 20:57

adriandieter force-pushed the orx-g-code branch from a1d93ac to 0dce010 Compare November 12, 2023 20:59

adriandieter marked this pull request as ready for review November 12, 2023 21:01

hamoid reviewed Jan 23, 2024

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adriandieter added 5 commits December 15, 2025 14:55

Add g-code conversion using Generator for Composition/ShapeCountour/S…

89caeb6

…egment

Add plot extension

6302cb2

Add toCommands extension for list of compositions

87aa0f2

Include program name in file name

c65b80e

Add build file

cc25d98

Add orx-g-code to gradle files

e24ef00

adriandieter and others added 9 commits December 15, 2025 15:01

add method to translate mouse position to document position

8a4293f

Move demos to /jvmDemo

14fcd54

Move demos to /jvmDemo

3294a35

Refactor tests to use kotlin.test

07fb6da

Fix build script

34658a7

update readme demo paths

5a52451

remove commonTest from build.gradle.kts

ee5555d

Add vector2 scaling method

c5796b5

Fix build with current openrndr version

75c8595

- add kotlin-multiplatform conventions plugin with id - Composition & CompositionDrawer moved to orx - Segment renamed to Segment2D - use oshai instead of mu KotlinLogging - remove runtimeOnly(libs.slf4j.simple) dependencies

adriandieter added 8 commits December 16, 2025 00:32

Refactor Generator configuration

837a107

Adds GeneratorContext class to make composition traversal more flexible. Improves options for custom Gcode generators.

Refactor package structure

3da9002

Add g-code orx to the version catalog

336d0c4

Remove basicGrblSetup utility function

96f3e80

It is replaced by the BasicGrblGenerator.

document demos

30b84b0

Add DemoCustomGcodeGenerator to show customization options

0157f2a

Add missing docstring to writeGcode

672d05c

Update Readme with features, generators and examples

86c5770

adriandieter force-pushed the orx-g-code branch from 0dce010 to 86c5770 Compare December 16, 2025 19:11

hamoid reviewed Dec 18, 2025

View reviewed changes

adriandieter added 3 commits December 20, 2025 19:59

remove unused imports

1c26c29

move logger to a top level property

678fe37

use clamp to restrict drawing area

b7aa34c

hamoid approved these changes Dec 20, 2025

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edwinRNDR merged commit 1d00979 into openrndr:master Jan 28, 2026
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