## curve

Parametric variations of the folding chair, inspired from the “Rising Chair”, designed by Robert van Embricqs, was a good exercise for me to study Grasshopper again. After several different solutions, I’ve found the shortest one I think. This definition could work alone without any Rhino data, the overall size (width, length) of the plate, number of longitudinal cuts are all calculated within the definition. Without using any physical engines for complex rigid folding simulations, this is solved quickly just by applying simple right triangle equations. There are three other parameters that control the shape […]

This is a Cycloid-like family of curves, generated by its classical description: a rolling circle. In Grasshopper, we don’t need to roll the circle, but divide its path, utilizing data lists to simply rotate and evaluate it. It becomes more interesting when you play with the definition, chosing multiple evaluation points from the list of rotated circles. Here is an example: Here is the Grasshopper definition: [GHX: 0.9.0072]

While testing Anemone loop components for Grasshopper, these curves have emerged. In fact, I was trying to develop the definition that mimics the well known branching script with “Arch SED” method (using tangent vectors for each arc and iterating the process in a random fashion so that the branches (arcs) join nicely). Anyway, this definition develops one branch from every previous one, while the position, rotation and the length are defined by three seperate graphs. If you play with these graphs, you’ll see the Anemone updates itself automatically, finally collecting the […]

Here is a test of the optical flow component of Firefly. You can check the Firefly add-on to Grasshopper here. As an ongoing research project, I’ve been searching for a suitable platform to study responsive geometric patterns. This initial study focuses on one particular effect of Firefly, the optical flow that outputs the direction vectors on a given webcam input. I developed traces of it by joining endpoints of these vectors together, creating strings. Then, recorded them to give better motion effects, adding color afterwards. Here is the Grasshopper definition […]

Rhinoceros cannot align text onto a curve (as far as I know). Grasshopper should help in such tasks as it is well equipped with text components in the latest version. Nowadays I’m studying at an installation project which includes such typographic effects. However, the fonts are still missing in Grasshopper’s native text components. Below is a simple definition that align any given text onto any given curve set. Be careful about “curve frame” component as it would create upside down planes (I have no idea why), just use “horizontal frames” […]

This is a simple trick that shows the utilization of “surface split” component in Grasshopper. It is used to detect inner regions of any given two-dimensional linework, resembling the hatch boundary detection of AutoCAD. There is no hatch component in Grasshopper but maybe this could be used as a starting point. Here is the simple definition if you want to try: [GHX: 0.9.0056]. I used “project” component to quickly understand which of the trimmed surfaces is inside. “Point in curves” component also gives the same solution.

Today’s tip is about the two dimensional curve-point calculations. It is very handy to use “closest point” components in Grasshopper. You can calculate distances and directions between curves, surfaces and points and place point objects in relation with the proximity of another object. However there is no “farthest point” implemented yet. I tried to calculate a farthest point from a curve. First, tried to translate curve in a fashion that it would result the opposite of closest point calculation, giving the farthest point. However this idea has collapsed quickly because […]

This is another brave group of students. They studied one of the most interesting materials in this year’s Basic Design studio. They tested the structural capacities and nearly all possibilities of thin Bamboo sticks. Unfortunately they lost most of the prototypes, and one of them was a beautiful structural tripod. In the final assembly, they managed to span the required distance by attaching bamboo sticks using plastic fasteners. Below are some of the photos from final day. The sequence of joining the stripes is making it much more structural than […]

Today, there are pedagogical and practical challenges on the use of algorithms in architectural design, as computer puts not only a physical but also a cognitive layer between designer and the subject. Formulation of this cognitive layer is becoming important, regarding which model of computing is used to connect designer with the subject. Is it a “designerly” search, or design exploration in a visual programming environment? As most of the researchers admit that visual programming environments are very effective in generating variations, but on the other hand, it dramatically changes the way […]

Today, we’ve studied fundamentals of component-based design methods. Using curves and surfaces as starting points, we’ve experienced ways of translating those entities via design criteria based on our purposes. First, a curve is used to construct a leaf structure. We’ve experienced dispatching data lists and combining them back together. Subdividing curves into points created further entities such as vectors and planes. We used those entities as inputs of regular drawing and modeling commands such as rectangles, or planar surfaces. This in-class exercise can be studied here. Second exercise was the […]

Today, we’ve discussed ways of subdividing entities to create parametric definitions. Curves can be divided into segments, creating snake-like object definitions. This exercise is important regarding the management of data. Vectors and planes are used as reference entities here. Nowadays, it became clear to me that, reference planes are very important because they both include reference points and related vectors as well. The definition studied in this post includes a curve subdivision and a combination of vector / plane management to create what we’ve deserved for: A Taenia-like freak object.. My […]