3D Collision Detection

[davef21370]

Has anyone got a collision detection function for 3D spheres?
I'm not being googlazy (just invented that word), all I can find are references to Panda3D, PyODE, VRPlumber, etc. and I don't need a full package, just a function to which I can pass xyz co-ordinates, velocities and radii and get the relevant info back.

Any help appreciated.
Dave.

[PeterO]

If they are spheres it's easy maths !

sphere 1 center at (x1,y1,z1) sphere 2 center at (x2,y2,z2)
sphere 1 radius r1 sphere 2 radius r2

d = sqrt( ((x1-x2)^2) + ((y1-y2)^2) + ((z1-z2)^2))

if (d < (r1+r2) ) then collided

PeterO

[davef21370]

Thanks Peter but I need the bounce as well, probably should have mentioned that..

Dave.

[PeterO]

You probably DO need the "full package" then ! I've used ODE (from C) in the past so I would expect PyODE to be fairly straight forward.

PeterO