Jumped Glued Box

[Zanozza]

I have some boxes glued to one "handle".

After falling this "handle" have strange "dancing" movement.

I need to have this structure because the number of boxes should be procedural.

What is wrong in my test scene?

Thank you!

cubes.hipnc

[Rafal123]

Zanozza, I tried to change your network in maaaany ways but still it gives me the same strange behaviour, don't know why

Edited November 11, 2007 by Rafal123

[mtucker]

To figure out how to fix this hip file, you have to look at the RBD Glue Object DOP. Inside there is an RBD State DOP which tells the object to which all other objects are glued that it should calculate its mass, center of mass, and inertial tensor on every timestep. The reason this is necessary is that having glued objects break off will change these values for the combined objects. In the attached hip file, the handle object is the object to which the others are glued, so it has to be set up to recalculate its mass, center of mass, and inertial tensor at each timestep. Failing to do this results in this object having a mass of 4000, and a center of mass way above its actual center of mass once the threee cubes have broken off, which explains the erratic motion in the original file.

Mark

cubes2.hipnc

[Zanozza]

Thank you, mtucher, for your explanation!

I found another "trick" - my structure work fine when cube Density <= 1% of handle Density...

But I think your structure will better and more pretty anyway.