manuQuetelard

03-03-2008, 09:03 AM

Hello all,

I need to display objects with very big coordinates in my application.

When I try to display these objects, some visualization problems appear. When I move the camera, the geometry coordinates seems to change at each frame like each point is moving randomly.

It seems like precision problems.

I use only double precision values so it is a bit strange.

I use a lot of matrix transformations so maybe the problem comes from matrix operations. Matrix values are also defined with double precision.

Has someone already had this problem?

Thanks a lot for your answers.

Emmanuel Quételard

Igeoss.

I need to display objects with very big coordinates in my application.

When I try to display these objects, some visualization problems appear. When I move the camera, the geometry coordinates seems to change at each frame like each point is moving randomly.

It seems like precision problems.

I use only double precision values so it is a bit strange.

I use a lot of matrix transformations so maybe the problem comes from matrix operations. Matrix values are also defined with double precision.

Has someone already had this problem?

Thanks a lot for your answers.

Emmanuel Quételard

Igeoss.