This app allows you to simulate how any origami crease pattern will fold. It may look a little different from what you typically think of as "origami" - rather than folding paper in a set of sequential steps, this simulation attempts to fold every crease simultaneously. It does this by iteratively solving for small displacements in the geometry of an initially flat sheet due to forces exerted by creases. You can read more about it in our paper:
Fast, Interactive Origami Simulation using GPU Computation by Amanda Ghassaei, Erik Demaine, and Neil Gershenfeld (7OSME)
All simulation methods were written from scratch and are executed in parallel in several GPU fragment shaders for fast performance. The solver extends work from the following sources:
Origami Folding: A Structural Engineering Approach by Mark Schenk and Simon D. Guest
Freeform Variations of Origami by Tomohiro Tachi
This app also uses the methods described in Simple Simulation of Curved Folds Based on Ruling-aware Triangulation to import curved crease patterns and pre-process them in a way that realistically simulates the bending between the creases.
Originally built by Amanda Ghassaei as a final project for Geometric Folding Algorithms. Other contributors include Sasaki Kosuke, Erik Demaine, and others. Code available on Github. If you have interesting crease patterns that would make good demo files, please send them to me (Amanda) so I can add them to the Examples menu.
https://cuttle.xyz/@forresto/Origami-simulator-tips-W4lDXuB5m0xh
https://nitter.42l.fr/kellianderson/status/1454871569981902848
Sundial is a solar analysis project by prescription. in collaboration with Arup. The geometry is strictly pragmatic, based on natural solar trajectory and without additional beautification.
Sundial is the result of a study of the solar path cycle. The gathered data is transformed into geometry for each hour of daylight. The direction of the sun’s rays dictates and shapes the outline of the sundial to provide the minimum necessary surface area. The optimized geometry also resembles that of a flower petal, and likewise the structure can be self-bearing without the need for supporting elements. This finding raises the question – are flower petals such a shape due to the trajectory of the sun?
Features: shows time in digits; works 365 days a year;· entirely scalable;· unique to geographic location;· provides basis for future implementation.
A 3D printed prototype was made out of strong and flexible plastic for a “field test” in Amsterdam, which proved that the calculations are correct.
Sundial can be installed for light festivals and expos and, because it is scalable, in spaces from parks to front yards.
Sundial is a contemporary intervention revealing the interplay of daylight and a mathematically composed static geometry that will fascinate people and celebrates light
The geometry highlights that nature and mathematical laws are beautiful in and of themselves. At prescription. our task is to find and to translate these into architectural objects and processes.