You need to rotate the view after importing an image to see what’s going to be cut in 3d, the overhead view is not sufficient to get a clear understanding. The images are converted to a heightmap based on the brightness of each pixel in the image, so the output is about what I’d expect and I suspect that if you rotated the 3D view, it would match pretty closely.
As @macklebee mentioned, you effectively created a lithophane.
Maybe. At this point we’re trying to keep the UI very simple so we’re passing on any optional settings for now. We’re thinking about adding an “Advanced Mode” to the UI that would only show these kinds of options to those who need/want them.
We’re not sure yet on this one but it’s possible we’d do it further down the road.
Got it- that’s in the 2D toolpath code then, not the 3D finishing being discussed above.
The 3D finishing started with a better toolpath linker so it was good from the start.
VCarve had the same linker but it linked globally, rather than region by region . Region by region is less optimal but it seemed to be what people wanted because it looks “more logical” so we changed to it in the 400-series of releases.
2D Pocket/Engraving/Contour toolpaths just got the new toolpath linker in the past couple of releases. They should be pretty good now.
This is mostly what CC does, with a few other criteria in there to make it look “more optimal” to the viewer.
FYI- We’re planning on 415 adding 3D Roughing in the near future.