https://github.com/tethik/n-body-problem

A java physics simulator for simulating the force of gravity.
https://github.com/tethik/n-body-problem

Last synced: 4 days ago
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A java physics simulator for simulating the force of gravity.

• Host: GitHub
• URL: https://github.com/tethik/n-body-problem
• Owner: Tethik
• Created: 2013-04-02T01:20:33.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2013-04-02T01:41:46.000Z (over 11 years ago)
• Last Synced: 2024-10-11T08:26:50.542Z (27 days ago)
• Size: 5.05 MB
• Stars: 2
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
n-body-problem

==============

A java physics simulator for simulating the force of gravity.

Authors: Frederick Ceder and Joakim Uddholm

== Requirements ==

1. Java 1.7 (JRE)

2. Ant

== Building ==

The project was built in the eclipse IDE but can be compiled by ant if 

you wish. Either run the `make` command or the `ant` command and it will

compile the project with the correct.

== Running ==

The main programs that might be interesting to you as a tester are: 

 - 2D visualiser

 - the ResultGenerator. 

Available runnable scripts:

 - 2dvisualiser

 - grav_single

 - grav_multi

 - barneshut_single

 - barneshut_multi

== Input parameters ==

./2dvisualiser numBodies numSteps far numThreads collision width height barnes

./grav_single numBodies numSteps far numThreads collision

./grav_multi numBodies numSteps far numThreads collision

./barneshut_single numBodies numSteps far numThreads collision

./barneshut_multi numBodies numSteps far numThreads collision

numBodies and numSteps are mandatory, the rest is optional and will fallback to default values

if no others are entered.

Defaults:

	far			= 0.5

	numThreads 	= 1 or 2 	(Depending on if sequential run or multithreaded)

	collision	= true

	width 		= 640

	height 		= 480

	barnes 		= false

Definitions:

	

	far 		:= Granularity value in barnes-hut algorithm. Does nothing for other implementations. 

	

	numThreads 	:= The number of worker threads used. Does nothing for a sequential run.

	collision 	:= Set if collision physics should be activated or not.

	

	width		:= Width of the window for the GUI.

	

	height		:= Width of the window for the GUI.

	

	barnes		:= Set gravitational force to run with a Barnes-Hut implementation.