LitFX VS FXyz

That is an overlay extended from LitFX, with the original design contributed by Carl Dea (who is just phenomenal btw) and then I tweaked its colorations, have minimize/close buttons, iconified actions and gave it a useless but awesome fly in animation effect. https://github.com/Birdasaur/LitFX/tree/master/litfx-controls/src/main/java/lit/litfx/controls/covalent

I see you used my AnimatedText implementation https://github.com/Birdasaur/LitFX/blob/master/litfx-controls/src/main/java/lit/litfx/controls/output/AnimatedText.java

"and then a 3D line from there to the 3D sphere. " No, this line segment is also a 2D line. Actually its two lines of different colors, thickness and transparency which gives the illusion of 3D shading. I have a manager which reacts to any camera position/rotation changes by computing a transform of the 3D position of the sphere to a 2D point. The line segment's start x and y are bound to that 2D point. An example of how to do that same dynamic transform but with labels is in FXyz3d: https://github.com/FXyz/FXyz/blob/master/FXyz-Samples/src/main/java/org/fxyz3d/samples/utilities/FloatingLabels.java

The CAD models are slightly simplified versions of our machining models and exported as OBJ. They are more complex and produce more artifacts than hand-crafted models, but with instance sharing it's no issue to display hundreds of actuators simultaneously. Most of the models are 1-10MB, but the Hexapod chassis at the end is an unmodified export with ~150MB. The models are loaded using the OBJ loader bundled with FXyz.