Semi-regular Duck - Shell-lattice construction based on regular and semi-regular tiling via functional composition.

This duck has been created using tools and algorithms developed at the Technion, and are part of the IRIT geometric modeling kernel (https://www.cs.technion.ac.il/~irit/). This specific duck model has been created using function composition of dual semi-regular tiles over the shell geometry of a B-spline bivariate duck. This model is provided in STL and OBJ file format.