That looks like a render pic icon. Do you know who rendered it and if it could be rerendered as an SVG? If so, it could be imported directly in Icon-o-Matic. Otherwise there’s a bitmap to vector tracer in Inkscape that isn’t as optimal but would still work.
This would not be hard to replicate in Icon-O-Matic from scratch. The current logo is even already isometric, though in a different direction than the standard Haiku style. Though given the name Furnace I’d be tempted to do something with a chip in a fire or furnace.
If no one else gets to it before I do, I can make one. I want to dust off my icon skills, the last time I made some for Haiku was probably 15 or more years ago, haha. I was even showing off some of them to my son the other day. Made long before he existed (he is now 8)
This is my approach.
I took ZuMi’s chip icon as a base, it’s modified for perspective and some other things, but still unmistakable (love ZuMi’s icons )
At first I tried to cram as many feet as possible (8 feet) so that it ressembled the original Furnace icon (12 feet!).
At small sizes it was a small disaster.
So I settled on 6 feet, that are still recognizable at 32px and smooth enough at smaller sizes.
It has many compromises like that, so that it works well as a Haiku icon at different sizes, but I think it’s still quite faithful to the original.
What do you think?