User:Mh001/GroIMP

GroIMP

File:Groimp.png
File:Groimp-ui.png User interface
Paradigm	multi-paradigm: educational, procedural, rule-based, simulation
Designed by	Ole Kniemeyer
First appeared	2003 (2003)
Stable release	1.4.2 / June 6, 2013 (2013-06-06)
Typing discipline	static
OS	Cross-platform (JVM)
License	GPL
Filename extensions	gsz, rgg, xl
Website	www.grogra.de
Influenced by
GROGRA

GroIMP (Growth Grammar-related Interactive Modelling Platform) is an integrated modeling environment specialised in 3-d plant modelling. The integrated programming language XL (eXtended L-System language) is an on Java programming language based implementation of relational growth grammars.

About

GroIMP was designed and authored by Ole Kniemeyer at the Brandenburg University of Technology. Today, work is continued at the University of Göttingen at the Department Ecoinformatics, Biometrics and Forest Growth.

Many scientific articles have been published using GroIMP.

Versions

• 1.5 (beta version, planed release Oct. 2016)
• 1.4.2 (2013-06-06)
• 1.4.1 (?)
• 1.4 (?)
• 1.3 (2012-02-23)
• 1.2.1 (not official)
• 1.2.0 (2011-03-04)
• 1.1.0 (2010-04-30)
• 1.0.0 (2009-09-24)
• 0.9.8 (2008-04-19)
• 0.9.7 (2007-10-30)
• 0.9.6 (?)
• 0.9.5 (?)
• 0.9.4 (?)
• 0.9.3.2 (?)

User interface

The graphical user interface of the GroIMP software provides

• Editor panel (using on JEdit)
• 3-d View with four view mode: OpenGL Proteeus, OpenGL, Wireframe
• 2-d Graph View
• Attribute Editor
• Message Window
• XL Console
• Preference Window
• Explorers for, e.g., datasets, files, textures, shaders, objects, light distributions

Example

"Hello, world!" program

The traditional "Hello, world!" program can be written in XL as:

// definition of a module as an extension of a sphere object
module A(float len) extends Sphere(0.1) {
	{setShader(GREEN);}
}

// model initialisation; set axiom to a single 'A'
protected void init () [
	Axiom ==> A(1);
]

// rule definitions
public void run () [
	// search for all A's and replace them by the right-hand side of the rule 
	A(x) ==> F(x) [RU(30) RH(90) A(x*0.8)] [RU(-30) RH(90) A(x*0.8)];
]

Running the model will generate a three-dimensional binary tree. In this model A can be interpreted as bud while F could be an internode. In this scene, the rule could be translated as: Search for all buds and replace them by an internode and create two branches with an new bud on the top of each.

External links

• GroIMP Homepage
• GroIMP on SourceForge
• GroIMP Modell Gallery

References

• Kniemeyer, O.; Barczik, G.; Hemmerling, R.; Kurth, W. Relational Growth Grammars - a parallel graph transformation approach with applications in biology and architecture In: Applications of Graph Transformations with Industrial Relevance AGTIVE ’07 (eds.: A. Schürr, M. Nagl, A. Zündorf), International Workshop Kassel Oct. 10-12, 2007, Lecture Notes in Computer Science 5088, Springer, Berlin etc. 152-167.
• Hemmerling, R.; Kniemeyer, O.; Lanwert, D.; Kurth, W.; Buck-Sorlin, G.H. The rule-based language XL and the modelling environment GroIMP illustrated with simulated tree competition Functional Plant Biology, 2008, 35(9/10):739–750.