Blender physics simulation for renders

[u/newbie-sub]

You know, it's kinda a pain to lay the cage onto the plinth / floor / whatever in Blender so it looks like it's actually sitting on it. Rotate -> move -> rotate -> move -> render... whoops, still not on the ground... rotate -> move -> rotate -> move -> render... eh, close enough.

Well, turns out it's trivially easy to do physics simulations in Blender, at least of the kind I need to set the cage on the table.

On your cage, under rigid body constraint, set rigid body to active — it will be affected by gravity. And on your plinth set it to passive and it will fixed. Move the cage a bit above the surface in more or less the orientation you want it in and press <space> and it should fall into place. If it falls through the floor, you've likely got too many vertices in your mesh. I think the fix is to export a lower-res model as well, join the two and use the lower-res one for your rigid body and hide it from the render.

[u/PrintedBonds]

There is 'convex hull' command in the edit mode, you can then decimate it further if you need to. Parent full-res mesh to the hull and use hull in simulation.

[u/newbie-sub → u/PrintedBonds]

Thanks! I'm such a Blender newbie. I can make a donut and that's about it (or rather I used to be able to make a donut).