Since we released RABBIT yesterday, there are more than 250 downloads! Thanks everybody for your interest – this is what keeps us motivated to create tools that rock!

We also received 4-5 requests to release RABBIT without a need to log in on Facebook. Although we understand these requests, please consider the following:

RABBIT 0.3 is a major upgrade.

The new version provides numerous new features and improvements:

• Compatibility with Grasshopper 0.8.XXXX [NEW]
• New Icon Set [NEW]
• 1D/2D Elementary Cellular Automata Support [NEW]
• 2D/3D Excitable Media Cellular Automata Support [NEW]
• 2D/3D Life-Like Cellular Automata: Conway’s Game of Life, Generations, 2×2, etc.
• 2D/3D L-Systems: Branching structure, Space-filling curves, etc.
• L-Systems Tubes/Thickness Support [NEW]
• L-Systems Angle/Thickness Scale Support [NEW]

It took us months of hard work to release this new version.

We are sacrificing a lot of our free time to develop the plug-in. Code, Graphics, Site, Tutorials - every single thing consumes a lot of time.

It is free!

RABBIT is free for non-commercial work. We are not charging our users and we are not affiliates with McNeel in any way.

Our reward? We love our community!

We love our community. We enjoy your comments and likes. Your interest is the single driving force behind the RABBIT development.

We do not share personal information, neither we are interested in your personal information! The only thing, we are interested in is to expand our community and to stay in touch with it. The easiest way to do that is via social media.

Everyone can take the decision whether the efforts behind RABBIT deserve a single click of a ‘Like’ button or not.

Thank you!

In conclusion, we would like to thank you for your support and ask for your understanding. We have put a lot of hard work in RABBIT. Have fun and enjoy it!

Sincerely,
MORPHOCODE

RABBIT 0.3 is compatible with the latest version of Grasshopper at the moment(0.8.0066).This new version is equipped with a new set of icons and is simplified allowing even easier modeling of cellular automata and l-systems into Grasshopper.

RABBIT allows you to create 2D/3D L-Systems, 1D Elementary Cellular Automata, 2D/3D Life-Like Cellular Automata, Excitable Media Cellular Automata.

Make sure to Get this new release and tell us what you think: DOWNLOAD RABBIT.
Also, check out our UPDATED TUTORIALS SECTION!

The definition demonstrates how to create a 3D structure using the memory of a 2D Game of Life Cellular Automata.

This is the most famous cellular automata ever invented. People have been discovering patterns for this rule since around 1970. Large collections are available on the Internet.
The rule definition is very simple: a living cell remains alive only when surrounded by 2 or 3 living neighbors, otherwise it dies of loneliness or overcrowding. A dead cell comes to life when it has exactly 3 living neighbors.
A rule by John Conway.
More about Game of Life

The definition demonstrates how to create the famous Game of Life Cellular Automata using RABBIT.

This is the most famous cellular automata ever invented. People have been discovering patterns for this rule since around 1970. Large collections are available on the Internet.
The rule definition is very simple: a living cell remains alive only when surrounded by 2 or 3 living neighbors, otherwise it dies of loneliness or overcrowding. A dead cell comes to life when it has exactly 3 living neighbors.
A rule by John Conway.
More about Game of Life

The definitions demonstrate how to create Excitable Media Cellular Automata using RABBIT.

An excitable medium is a nonlinear dynamical system which has the capacity to propagate a wave of some description, and which cannot support the passing of another wave until a certain amount of time has passed (known as the refractory time).

A forest is an example of an excitable medium: if a wildfire burns through the forest, no fire can return to a burnt spot until the vegetation has gone through its refractory period and regrown. In Chemistry, oscillating reactions are excitable media, for example the Belousov-Zhabotinsky reaction and the Briggs-Rauscher reaction. Pathological activities in the heart and brain can be modelled as excitable media. A group of spectators at a sporting event are an excitable medium, as can be observed in a Mexican wave.

http://en.wikipedia.org/wiki/Excitable_medium

The definition demonstrates how to create 1D Elementary Cellular Automata using RABBIT.

The simplest class of one-dimensional cellular automata. Elementary cellular automata have two possible values for each cell (0 or 1), and rules that depend only on nearest neighbor values. As a result, the evolution of an elementary cellular automaton can completely be described by a table specifying the state a given cell will have in the next generation based on the value of the cell to its left, the value the cell itself, and the value of the cell to its right.
http://mathworld.wolfram.com/ElementaryCellularAutomaton.html

The definitions demonstrate how to create 3D Branching Structures using RABBIT. How to control parameters: angle, thickness, length.
More about Branching Structures: http://algorithmicbotany.org/papers/abop/abop-ch1.pdf

The meanings of the symbols:

F move forward at distance L(Step Length) and draw a line
f move forward at distance L(Step Length) without drawing a line
+ turn left A(Default Angle) degrees
- turn right A(Default Angle) degrees
\ roll left A(Default Angle) degrees
/ roll right A(Default Angle) degrees
^ pitch up A(Default Angle) degrees
& pitch down A(Default Angle) degrees
| turn around 180 degrees
J insert point at this position
“ multiply current length by dL(Length Scale)
! multiply current thickness by dT(Thickness Scale)
[ start a branch(push turtle state)
] end a branch(pop turtle state)
A/B/C/D.. placeholders, used to nest other symbols

The definitions show how to create 2D Branching Structures using RABBIT.
More about Branching Structures: http://algorithmicbotany.org/papers/abop/abop-ch1.pdf

The meanings of the symbols:

F move forward at distance L(Step Length) and draw a line
f move forward at distance L(Step Length) without drawing a line
+ turn left A(Default Angle) degrees
- turn right A(Default Angle) degrees
\ roll left A(Default Angle) degrees
/ roll right A(Default Angle) degrees
^ pitch up A(Default Angle) degrees
& pitch down A(Default Angle) degrees
| turn around 180 degrees
J insert point at this position
“ multiply current length by dL(Length Scale)
! multiply current thickness by dT(Thickness Scale)
[ start a branch(push turtle state)
] end a branch(pop turtle state)
A/B/C/D.. placeholders, used to nest other symbols

This definition explains how to create the famous Dragon Curve using RABBIT.

The Heighway dragon (also known as the Harter–Heighway dragon or the Jurassic Park dragon) was first investigated by NASA physicists John Heighway, Bruce Banks, and William Harter. It was described by Martin Gardner in his Scientific American column Mathematical Games in 1967. Many of its properties were first published by Chandler Davis and Donald Knuth. It appeared on the section title pages of the Michael Crichton novel Jurassic Park.

Recursive construction of the curve
It can be written as a Lindenmayer system with
angle 90°
initial string FX
string rewriting rules
X ↦ X+YF+
Y ↦ −FX−Y.

Source: Wikipedia

Hilber Curve Definition using RABBIT.

A Hilbert curve (also known as a Hilbert space-filling curve) is a continuous fractal space-filling curve first described by the German mathematician David Hilbert in 1891,[1] as a variant of the space-filling curves discovered by Giuseppe Peano in 1890