Swirling Softbody around Container

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https://www.youtube.com/watch?v=mL8SgdS0kXI&ab_channel=CGShortcuts⁠

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Create a Sphere → Radius: 20cm; Type: Icosahedron

Add Cloner parent on Sphere → Mode: Object

Duplicate Sphere on layer, name as Outside Sphere (both sphere under Clone layer), Radius of new Sphere:: 50cm

Back to Cloner, Drag Outside Sphere in Object box → Distribution: Volume; Count: 10 (adjust Seed value for the sphere alignment we like)

Hide Outside Sphere (coz it’s just a for referencing for Clone Object)

Select Cloner layer → Effector → Random

→ Parameter: Untick Position; Tick Scale, Uniform, 0.5

Spheres movement/animation:

Add Simulation Tag in Cloner layer → Soft Body → Collision → Individual Elements: Top Level; Shape: Static Mesh

In Sphere layer → Segment: 12 (make PC faster) → Project Setting (Ctrl+D) → Dynamics,

Gravity: 0cm (prevent spheres fall down but the spheres explore coz Soft Body effect intersecting to each other, to solve this:)

→ In Sphere layer, set keyframe on 0F, Radius 5cm → 10F, Radius 20cm

Fix the Spheres move within wanted volume:

Duplicate Outside Sphere, name new one as Container → make it visible, boost Radius to 55cm (make sure all small spheres inside the container) → Simulation Tag → Collider Body → Shape: Static Mesh → hide Container

Make the Spheres rotate along centre:

Select Container layer → Simulate → Forces → Rotation

→ In menu, Object → Angle Speed: 400

In Cloner Soft Body Tag → Force → Force Mode: Include → drag Rotation layer in Force List

(remark: may increase container radius if rotation is limited)

Add Subdivision Surface parent over Cloner layer (to make the spheres less chunky)

Dress up and finalize:

Select Subdivision layer → Simulate → Turbulence → Object, Strength: 100cm → Drag it in Force list of Soft Body Effector too

In Soft Body Tag → Soft Body → Springs. Structural: 10 →

Dynamics → Set Initial State by choosing the starting animation looks on timeline (delete Radius animation track from Sphere layer first) → Cache , Bake All → Render

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