Behaviours get jerky when far from origin

Engines, Libraries and Tools Java 3D
#1

When I create an object and transform it so that it is not to far from the origin, and then attach keyboard behaviour, the object moves around smoothly. However, if I transform the object along way from origin it and moves in jerks.

I am transforming the object on a vector of rougly (10000000,10000000,10000000). The bigger the vector the more the object moves in jumps. Can anyone help and tell me what i’m doing wrong.

Thanks,

Ben

#2

Sounds like you’re hitting precision errors - try switching from floats to doubles. If you’re already using doubles, then try using javax.media.j3d.HiResCoord instead.

#3

That sounds like a good idea, but how do i represent a HiResCoord transformation as a vector or whatever.

I found that if i have a Vector3d(15000000,15000000,15000000) if you then place a camera so that you can see this object, like a colorCube. If you then move the object o Vector3d(15000000.4,15000000.4,15000000.4) the object does not move. if you move it to (15000000.5,15000000.5,15000000.5) the object actually moves to (15000001,15000001,15000001).

So how do i go about using HiResCoords?

Thanks