help with rigid object that becomes fluid?

Support Animation and Rigging
1

Hi guys,

I was wondering whether there was some way I could get an object to behave as a rigid object first and THEN as a fluid.

I’m making a cartoon animation, and I’m trying to animate an object that falls onto a hot pan and turns into liquid because of the heat (like a boiled egg).

So basically, I need it to free fall as a rigid object (using the physics engine or something) until it hits the pan, and then “turn into” a fluid…

Any ideas?

Thanks a lot!
Jessica

2

A couple ideas, one with a fluid sim, the other without.

  1. The old switcheroo. Take your egg shape and duplicate it, hide the other one. On say frame 50 make a fluid sim until frame 250. Increase the viscosity, so it’s closer to oil or honey. On frame 1 key frame the visibility of the fluid. Hide it in the outliner (eyeball) right click and choose insert keyframe. on frame 49 keyframe again hidden. on frame 50 click the eyeball to make it visible and keyframe it a third time. It should now appear out of nowhere on frame 50 and melt. Go to your duplicate without the fluid sim, and keyframe it visible and falling from frames 1-49, and then keyframe it’s visibility to hidden on frame 50.

  2. Just use shapekeys on a single object. Create a basis shape of the egg oval, and make a shapekey (or two) of the egg melting. Keyframe it falling and keyframe the shapekeys.

Good luck!