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Rain with water ripples effect

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https://www.youtube.com/watch?v=eBk2AibYOeE&list=PLvN6g-od8Ng-PSK6DXdaOUiKy2Oab3IqX&index=1⁠

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Create Single rain droplet:

Create sphere → T → Subdivision Axis, Height: 8 (rename the layer as Rain)

Vertex mode → B (Soft selection) → Select upper vertex on sphere → move up the shape (extend the body), then scale the top head vertex (sharpen the head) like follow:

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Poly modelling mode → Object mode → Freeze transformation → Delete by Type → CentrePpivot

→ Scale the raindrop down to all XYZ to 0.04

→ Freeze.... repeat the steps above except scaling

→ Translate Y: 8 (repositioning)

Create continuous animation:

Key Select (Shift+W) @ 0F, Translate Y: -8@ 80F

Window → Animation Editors → Graph Editor

Select all points and make as Linear

→

Curves (top bar in Graph Editor) → Post Infinity → Cycle with Offset (let the rain back to start position when timeline runs back to 1F)

Group the Rain layer (Ctrl+G), rename as Rain_GRP → Rotate X: 15

Select rain grop → MASH → Create Network → Grid Distribution Type → Distance XZ 15, GRID XZ 25

→ Add Random Node: Positon X: 0, Y:10

Make Rain fall randomly (non unified):

In MASH, Add Transform Node → R click on Control Null → Create (a layer called MASH1_Transform_Ioc created in Outliner)

→ Select the transform layer in Outliner → Translate Y: 10

→ In MASH, Add Time Node: Animation Start and End: 1, 120; Random Seed: 10, Time scale: 1.4, Random Time Scale 10

Go to FX (F5) → Fluid → Pond

Select both MASH1_ReproMesh and Pond layer in Outliner → Fluids → Make Collide

Select Pond layer → Attribute editor set as follows:

Boundary X and Y: None

Dynamic Simulation → Damp: 0.1

Contents Details → Density → Density Scale: 0.04

Select Pond → Modify (top bar) → Convert → Fluids to Polygons (pond layer auto rename as PolySurface)

Select both MASH ReproMesh and PolySruface layer, Cache → Alembic Cache → Export Selection to Alembic (start to end frame) → Export

Open New scene, import the Alembic → Group the ReproMesh and PolySurface, rename as Rain

→ Apply Standard surface material → Change Type to AI standard surface → Presets → Deep Water → Replace

Select the Rain Group → Edit → Duplicate special box → Geometry type: Copy, tick Duplicate input graph → Duplicate Special

Move the duplicated Rain1 layer align next to original layer, scale Rain1 layer to -1

→ Go to Alembic node in Rain1 → Offset: 4 (to make rain comes later than original surface)

Group original Rain and Rain1 layer, duplicate (Shift+D) and align next to each other, scale X to -1 of new layer

(animation in duplicated layer may not work, if so, use duplciate special as above instead)

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