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caveats: in order to cleanly handle the entry panel, valve, and sensor I had to rotate the valve and sensor models 90 degrees so that their in-/outlet pipes point the same direction as the entry panel. This also enables proper handling of a valve or sensor turned vertically. Some objects have rotation disabled entirely (as flipping them over/around makes no sense) When a valve is rotated, it is turned off automatically, to work around a glitch in the rotation code.
This mod uses nodeboxes to supply a complete set of 3D pipes and tubes, along devices that work with them. See https://github.com/VanessaE/pipeworks/wiki/ for detailed information about usage of this mod. Unlike the previous version of this mod, these pipes are rounded, and when placed, they'll automatically join together as needed. Pipes can go vertically or horizontally, and there are enough nodes defined to allow for all possible connections. Valves and pumps can only be placed horizontally, and will automatically rotate and join with neighboring pipes as objects are added, as well as joining with each other under certain circumstances. Pipes come in two variants: one type bears one or more dark windows on each pipe, suggesting they're empty, while the other type bears green-tinted windows, as if full (the two colors should also be easy to select if you want to change them in a paint program). These windows only appear on straight lengths and on certain junctions. This mod is a work in progress. Please note that owing to the nature of this mod, I have opted to use 64px textures. Anything less just looks terrible.