I'm quite new in the blender world. I'm animating a balloon that has three fix points when it inflates/deflates and I want it to fly away at a certain point of the animation following the physics I already added, like the wind. I've seen that i can move the points and insert keyframes in edit mode but I want it to be realistic and just fly away. Is there a way to remove or deselect a vertex group at some point?
I've found an other solution, a rather simple one, with the Vertex Weight Mix modifier, but there must be others:
- Create your object, give it 2 vertex groups, one for the pinning, the second one must be empty. Give it the Cloth physics.
- Create a Force Field > Force next to your object. Animate it: give it Strength of 0 until frame 49 for example, keyframe it at frame 49, at frame 50 give it a Strength of 30.
- Give your object a Vertex Weight Mix modifier, put it above the Cloth in the modifiers stack. Choose Vertex Group A > the pinning group, Vertex Group B > the empty group, Mix Set > VGroup A or B. Keyframe the Default Weight A and Default Weight B values: A will be 0 from frame 1 to 49, then 1 at frame 50, B will be 1 from frame 1 to 49, then 0 at frame 50.
- It seems to work as planned, from frame 1 to 49, the object collapse with the pinning hanging it, at frame 50 it is blown away by the force field.