(by Mathias_Fuchs)
This package lets you tween between two or more curves without any overlaps.
Has a powerful command line interface for 2d and 3d, an interactive curve editor, and a GH interface
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Short description: Both the in-built Rhino and Grasshopper tweeners as well as other components take a very control-point-centric approach. In contrast, this package provides a tweening functionality whose emphasis on the mere curves' shapes is entirely independent on how the curve is controlled or parametrized. Also, the tween curves do not cut the interior curve avoiding undercuts, thus the package lends itself specifically to applications such as general illustration, typography, 3d printing layer design, CNC, landscape architecture etc - typically in landscapes, you don't want overhanging cliffs; likewise, a concrete printer usually has difficulties with excessive overhangs.

  - Furthermore, this package provides the unique functionality tween from one outer input curve to two or more inner input curves, instead of just one. Thus, it can generate curves similar to the Cassini curves, for example. Further functionality that is available on request includes a grasshopper component, output of the textured animation mesh, a high quality option, and the option to tween open curves also, and an API access, output to NURBS curve, ability to be called from within scripts.
  - This plugin accompanies the development of a web publishing pipeline for geometrical finite element applications, aiming at enabling both tech-savy and novice users to quickly prototype, and web-deploy parametric finite element applications to general geometric problems, as opposed to just physics applications. Further examples of such applications include image registration, medial axis extraction, Poisson interpolation, and optimal transfer type problems, see for more info and examples.


If you experience problems, please try to install .NET Framework 4.8 Runtime installed from


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