Does anyone know of a library allowing the creation of graphical nodes and connections much like that software, then generating linked structures as output? For example, if I create some objects and define internal parameters, then connect inputs and outputs, it should produce structures with those parameters as elements, plus other fields representing pointers (or equivalents to) that link together the structures. Native low level languages would be better, both for speed and for easier integration in other software with an eye for very small systems or even microcontrollers.