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Reaction Diffusion

This parametric design video is about reaction-diffusion. Reaction-diffusion (RD) is a canonical example of complex behavior that emerges from a simple set of rules. RD models a set of substances that are diffusing, or spreading; these substances also react with one another to create new substances. This simple idea has been suggested as a model for a diverse set of biological phenomena.

One of the intriguing aspects of reaction-diffusion is how a simple chemical system can produce a variety of patterns through small changes. Nervous System’s reaction diffusion experiments use the Gray-Scott model. This describes a system of two chemicals, often referred to as U and V, where U and V combine in a reaction to form more of V. Additionally, chemical U is produced at a certain rate, while chemical V naturally decays at a fixed rate. Changing just these rates of production and decay results in patterns of dots, lines, holes, or spirals. By working with multiple scales, varying parameters, and using anisotropic diffusion (in which chemicals flow more easily in one direction than another), it is possible to sculpt reaction-diffusion patterns.

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Parametric Louver

In this Grasshopper example file you can design a parametric Louver facade using the Pufferfish Plugin.

Parametric Building

In this Grasshopper example file you can design a parametric building using the native grasshopper components.

Field Dendro

In this Grasshopper Dendro tutorial, you can learn how to create a growing mesh by defining a series of spin fields on a NURBS surface using the Heteroptera plugin.

Sphere Collide

In this Grasshopper Tutorial for beginners you will learn how to use the Sphere collide component to generate evenly distributed holes on a NURBS surface.

Circle Pack Mesh

In this Grasshopper Kangaroo example file, you can circle pack a mesh using the "TangentIncircles" component.

Twisted Torus

In this Grasshopper example file, you can utilize the Nautilus plugin to design a parametric Twisted Torus.

Torus Strips

In this Grasshopper example file, you can model twisted torus strips and convert them into a spaceframe and panels using the Lunchbox Plugin.

Mesh groove

In this Grasshopper example file, you can convert a series of curves into a mesh with a 3d groove pattern using the Nautilus and Weaverbird plugins.

Box Joints

In this Grasshopper tutorial, you will learn how to model a parametric joint on the corners of a box with controllable parameters.

Spatial Network

In this Grasshopper example file, you can simulate an optimized path from an origin point/points toward a set of targets. The strategy involves branching at diverging points.

Staircase Drawing

In this Grasshopper example file, you can model a staircase detail drawing from the plan view and easily change the parameters.

Facade Scripts

In this Grasshopper example file, you can design a parametric facade using four different techniques.

Contour Techniques

In this Grasshopper contour tutorial, we will learn how to extract a series of solids from a part of a mesh by defining the direction and length with a single line.

Millipede Pavilion

In this Grasshopper Millipede tutorial, you can learn how to model a series of smooth connecting columns to a roof and then analyze it using Millipede's Finite Element Analysis.

Kangaroo Flow

In this Grasshopper Kangaroo tutorial, you can discover how to simulate the flow of a series of particles on a solid and then convert it into a mesh.

Perlin Noise

In this Grasshopper tutorial, you can learn how to generate Perlin noise on a surface and convert it into a solid.

Structural Grid

In this Grasshopper tutorial, we will learn how to generate a structural grid from a series of grid points.

Gear & Mechanism

In this Grasshopper tutorial, we will explore how to create a simple parametric gear and a radial mechanism, and also include an example file for the Iris mechanism.

Tower Floors

Tangent Arcs

In this Grasshopper tutorial, we will learn how to create a series of parametric solids using the "Tangent Arcs" component.

Brick Wall

In this Grasshopper tutorial, we will model a parametric brick wall on a NURBS surface with a rectangular projection. We can also adjust the thickness of the bricks based on point attractors.

Kangaroo Pavilion

In this Grasshopper Kangaroo tutorial, we will model a parametric mesh pavilion by simply defining the top curve and the location and profile of the columns.

Multipipe Kangaroo

In this Grasshopper Kangaroo tutorial, we will learn how to create a mesh with controllable anchor points and n-gon polygons.

Facade Techniques

In this Grasshopper Architecture tutorial, we will model a parametric building facade and create a checkerboard pattern on the panels.