Rectangular shapes in simulation 

I am wondering if there is a way to create creatures similar to those of Carl Sims or Lee Grahams creatures “Purple Jumper” and “Stand up Centipede” . Those creatures consists of rectangular shapes of different size and proportion. So I was trying to use solid shapes with ODE, but when simulating them, it looks like the pivots of the shapes getting offset. Also tried to export the rectangular shapes but in the exported file, they changed back to cylinders.

However, it is only possible to use sticks for now, it would be great if you could give a hint how to evolve creatures similar the Lee’s mentioned above. Maybe they exist already in a gene pool?

Many thanks!

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Maciej Komosinski's picture

Hello! Here are some answers and comments:

  1. “Purple Jumper” and “Stand up Centipede” – can you provide some links to them? They seem to be insufficiently famous to be easily found based on their names only :)
  2. “...solid shapes with ODE, but when simulating them, it looks like the pivots of the shapes getting offset.” – what makes you think so? Can you provide a specific example?
  3. “...tried to export the rectangular shapes but in the exported file, they changed back to cylinders.” – it is possible because the exporter may not support solid shapes (yet). What exporter did you use?
  4. “Maybe they exist already in a gene pool?” – download version 50rc19 and play with the creatures from solid-shapes.gen: http://www.framsticks.com/apps-devel