Can Newton do 2D physics ?

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Can Newton do 2D physics ?

Postby rocketmagnet » Thu Oct 16, 2008 2:53 pm

Hi all,

I am looking for a physics engine for a CAD package I'm writing. Most of the physics will be happening in 2D, and I was wondering if Newton can take advantage of this to allow me to have a very large number of objects?

BTW, all the objects are the same kinda shape, rectangles with hemispherical endcaps. Look a bit like those drug capsules.

Many thanks

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Re: Can Newton do 2D physics ?

Postby JernejL » Thu Oct 16, 2008 3:53 pm

Ofcourse, just apply a upvector joint to your object and reset the specific plane coordinate during transform callback so that they will only rotate along one axis and move along 2, and will be therefore your body will be limited to a 2D space.

But julio should tell you weither this is a good idea? to change transformation during transform callback.
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Re: Can Newton do 2D physics ?

Postby sea » Thu Oct 30, 2008 3:56 pm

I made it exactly like Delfi said, so I'm wondering about the solution. Maybe 2.0 could support some 2D "hacks" :)? Anyway, I use this method and, of course, I use some fixed depth of object I simulate. It's important to find some optimal value of constant depth, because too large is less precise and slower and too small is, erm, just similar (moreover, objects can fly through the others more easily). I use constant depth equals to 0.1 and it's enough for my needs.
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