Rigid meshes disappear. What is rigid (in Granny Viewer)?

[Skajaquada]

I've had this problem for weeks now that seemly at random meshes disappear on import even though they always show up fine in the Granny Viewer. Then I noticed in the mesh-list it said "rigid" after a mesh that failed and "skinned" after a mesh that succeeded, I went through some units which I remember failed and they all followed this pattern.

Now what the heck is rigid? In 3DS there's a rigid-checkbox that's not checked in any of my models' meshes (one the skin-modifier tab), a quick look at Wikipedia says it's a body that doesn't deform.

Solution: Add an additional bone that is just linked to the other one bone, not counting the root, in the failing mesh making it a total of two bones. Then weighting them each 50%. I did this because before with a failing mesh I did it and it seemed to make the mesh succeed, though at other times I want to remember the mesh didn't.

It's strange, I really want to know what the Granny Viewer means with "skinned" vs "rigid".

 

[CaptainBinky]

Rigid can mean as in what Wikipedia says - just an object that can move and rotate, but not deform - and also Rigid Body Deformation, which is what that check-box refers to.

This second just means that every vertex is weighted to only one bone - so all the skin values are 1.0. If there's only one bone in your hierarchy, then all your vertices are rigid body regardless of the state of that check-box.

If the object you're bringing into Granny Viewer has been skinned, then if it says "rigid" it means "rigid body".

So your solution was turning a rigid body skin into a soft-skin.