spring effect in Python

[pochis40]

I'm trying to write in Python something similar to this:
(Java)
http://java.sun.com/applets/jdk/1.4/demo/applets/GraphLayout/example1.html
or these:
(Proce55ing)
http://www.cricketschirping.com/processing/ExportAtlas/
or
http://www.cricketschirping.com/weblog/2005/12/11/force-directed-graph-layout-with-proce55ing/
or
http://www.cricketschirping.com/web...directed-graph-layout-with-processing-take-2/

I've problem to find something that give that physical effect (like a
spring).

Any idea?

 

[Lie Ryan]

I'm trying to write in Python something similar to this:
(Java)
http://java.sun.com/applets/jdk/1.4/demo/applets/GraphLayout/example1.html
or these:
(Proce55ing)
http://www.cricketschirping.com/processing/ExportAtlas/
or
http://www.cricketschirping.com/weblog/2005/12/11/force-directed-graph-layout-with-proce55ing/
or
http://www.cricketschirping.com/web...directed-graph-layout-with-processing-take-2/

I've problem to find something that give that physical effect (like a
spring).

Any idea?

Use pygame (http://www.pygame.org) for drawing the graphs, lines, and
circles.

Roll your own physics engine. The site you give described how it made
the physics and you can also look at their java source code (below some
of the applet there is a download source code link).

 

[Cousin Stanley]

....
I've problem to find something that give that physical effect
( like a spring).

Any idea?

You may find VPython useful for simulating physical effects ....

http://www.vpython.org/

Examples including a couple that are spring-related ....

http://matterandinteractions.org/Content/Materials/programs1.html

 

[Riccardo Lemmi]

I'm trying to write in Python something similar to this:
(Java)
http://java.sun.com/applets/jdk/1.4/demo/applets/GraphLayout/example1.html
or these:
(Proce55ing)
http://www.cricketschirping.com/processing/ExportAtlas/
or
http://www.cricketschirping.com/weblog/2005/12/11/force-directed-graph-layout-with-proce55ing/
http://www.cricketschirping.com/web...directed-graph-layout-with-processing-take-2/

I've problem to find something that give that physical effect (like a
spring).

Any idea?

For the physics engine you can try these libraries:
http://code.google.com/p/pybox2d
http://code.google.com/p/pymunk/