My project was to create a couture line using the concept of structure and skin. Using examples from existing lines by various designers, the final pieces were a bodice, drape, arm cuff, neck cuff and helmet.
True to the concept of the project (structure and skin), two Grasshopper definitions were developed to produce an underlying structure and surface for each couture piece. Using a base model of a human form (in iges format), iso curves were extracted and other curves were drawn on the human model surface to create lofted breps for each piece which were deconstructed to extract the surfaces for the Grasshopper definitions. Something I found to be particularly helpful was that these initial breps did not always translate well, had joints, etc. In some cases, I took the surfaces after they were built, exploded them in Rhino and used the MergeSrf tool to merge the exploded surfaces. This seemed to solve the problem to get a smooth mapping of the definition as opposed to a disjointed one due to the surface geometry.
The structure definition is based on a voronoi with a number of points defining and being added to the voronoi as a variable. The voronoi curves were extruded and thickened using Weaverbird.
The surface definition is based on a spinning definition using points in the Rhino model to set up charges and fields for the spin as both visible and invisible forces. The variables in this definition are the strength of the charges as well as the radius of the fields. Both the structure and the surface definitions were confined to areas (defined by the rectangle) that were subsequently mapped onto the lofted brep surfaces generated from the body model as previously noted.
In the end, the couture pieces have a netted, voronoi structure which is to be concealed by the skin but exposed when the surface breaks-much like how the body can be artfully exposed through the strategic design of clothing. The skin/surface is a spiraling, wavy flow on top of the structure-a metaphor to the decorative concealer of clothing that can deviate from but is still extracted from the surface of the body. What is interesting to me about the definition is the way it reacts to the brep surface twisting as it spirals around the form as evident in some detail images.
video of the definitions used before mapping:
video of the structure definition applied to the brep surface base (hidden):