PaperVision3D and JigLib

I experiemented with PaperVision3D and JigLib last week. Since JigLib had a plugin specifically designed for PaperVision3D, making the two work together was a breeze. The only thing that really bothered me is the fact that when I applied a force on a body, it rolled instead of gliding smoothly along the surface. I’m used to 2D physics engines, so that was unexpected for me.

I found that the documentation for JigLib was pretty limited. There is only an API without any explanation as to what the methods do and a few tutorials. Oh yes, and my physics knowledge is limited, so many terms don’t mean much to me.

I spent sleepless nights in the source code, trying to figure out what everything does by myself (since nobody answered my e-mails). I stumbled upon a very nice class named “JConfig”. This was the jackpot. It had a nice property “limitAngVelocities”, which was set to 10. I set it to 0 and voilà! My objects glided nicely along the surface, colliding with each other, maintaining their initial rotation.

I hope that this will save some sleepless nights to others.

One thought on “PaperVision3D and JigLib

  1. I don’t really know about JigLibFlash, but (as the author of the original JigLib 🙂 a better way of getting the effect you’re after might be to set the friction of your objects to 0. Limiting the angular velocities like that could lead to some strange collision behaviour (objects penetrating each other), as it’s a non-physical limit to the amount objects spin.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes:

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code class="" title="" data-url=""> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> <pre class="" title="" data-url=""> <span class="" title="" data-url="">