Final Version, Perhaps!

Spent the day reworking the interface (adding SCARA hardware support).

Added the option for right or left handed (default) elbows.

Here is the test input file:

An here is the SCARA output:

Notice how the image is trimmed to the maximum SCARA  reach.

Hardware

Bought a 500mw laser head, power supply and a new controller.

So I can start thinking about a prototype SCARA machine.

Termux

Termux is an Android app that run Linux. It runs without access to the root directory of the device (this make things a bit tricky). Initially it is just a terminal but X11 can be installed. With a vnc server and viewer, graphical programs can be run. Add CLANG which pretends to be GCC), programs and library can be compiled and run. Yes, you guessed it, I compiled xForms to run under Termux on my tablet. It works but without a real mouse or real keyboard it is rather clumsy.

IUP

IUP (supports X11) is another small C GUI library that is better suited to Android. Like a web-page, it moves around the buttons etc, to suit the device.

libui

Another small X11 C GUI, I looked at.

Nuklear

Initially I looked at this one before finding xForms. But without documentation it looked too hard to start with. Looking back it looks like a nice one to use with CLANG. It has no dependencies and is contained in a single header file.

As an added bonus it works in "immediate mode", that is there is no event loop, just post your form as required.    

AlanX