hellencharless54

Yeah, I know exactly what you mean. The `device transform` node is convenient for quick setup, but it definitely feels too “black box” once you want custom mappings or proper rotational control. The warning about avoiding rotations is mostly because Euler rotations can get messy fast with realtime controller input, but that doesn’t mean you *can’t* do it.

If you want full flexibility, you’ll probably have a much better time bypassing `device transform` entirely and reading raw controller values yourself using the Gamepad CHOP / Device In CHOP, then exporting or processing those channels manually.

A common approach is:

* Use Gamepad CHOP to grab raw stick/button axes
* Remap ranges with Math CHOP
* Filter/smooth with Lag CHOP
* Convert to transforms manually
* Feed into a Transform SOP/Object via CHOP exports or VOP/VEX

For rotations specifically, quaternions are your friend if you want smooth barrel rolls without gimbal weirdness. Even a simple setup where:

* left stick = translate X/Z
* right stick X = yaw
* right stick Y = pitch
* shoulder buttons = roll

can feel really nice once smoothed properly.

You could absolutely build this in VOPs too, especially if you want procedural blending or custom inertia. TimeSlice should still behave fine as long as you stay mostly in CHOPs and avoid heavy cooking downstream.

Honestly, this kind of controller tweaking reminds me of solving a Letter Boxed puzzle — the built-in solution works, but the fun starts when you break apart the system yourself and find a more elegant custom path through it.

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Hey everyone,

Lately I’ve been experimenting with procedural UI/UX concepts inside Houdini, specifically trying to recreate the kind of clean interaction flow you see in minimalist puzzle games like Letterboxed.

What interests me isn’t the puzzle itself, but the way the interface guides the user with almost no visual clutter. Everything feels constraint-driven, yet intuitive. That made me wonder how far Houdini’s procedural workflow could be pushed for interactive interface prototyping and motion design.

A few ideas I’ve been testing:

Procedural generation of responsive UI layouts using SOP networks
Using attribute-driven systems to animate interaction states
Creating node-based transitions where typography and panels react dynamically to user input
Exploring “constraint as design” rather than overwhelming the screen with controls

One thing I really appreciate about Houdini is how procedural thinking changes the way you approach design problems. Instead of manually tweaking every state, you start building systems that can adapt automatically.

I know Houdini is mostly associated with VFX/simulations, but I honestly think procedural UI and motion systems are an underrated area for experimentation—especially with realtime workflows becoming more important. Discussions around procedural workflows and learning paths seem pretty active in the community lately as well.

Curious if anyone else here has explored procedural UI/UX work in Houdini, or combined it with Unreal/interactive pipelines.

Would love to see examples or hear workflow ideas.

This usually happens because Partition by Index is only effectively receiving/processing one stream of work items, even though you’ve visually connected two File Pattern nodes.

In most node-based PDG/TOP-style setups, each upstream branch is treated separately unless you explicitly merge them into a single stream.

What’s going wrong
Each File Pattern node generates its own set of work items
Partition by Index expects a single combined stream
Without combining, one input often ends up overriding or being prioritized in the display
How to fix it
1. Add a Merge node (most common fix)

Place a Merge node between your File Pattern nodes and Partition by Index:

File Pattern (Low-poly) ─┐
├── Merge ── Partition by Index
File Pattern (High-poly) ─┘

This forces both datasets into a single unified stream so Partition can actually see everything.

2. Verify display vs actual data

Sometimes only one branch shows in the viewer even though both exist:

Click the Merge node and inspect work items
Then check Partition output separately
3. Alternative (if you need strict separation)

If you actually want to keep them distinct:

Use two separate Partition nodes (one per File Pattern)
Or tag each stream first (attribute like source=low/high) and partition later
Key idea

Partition nodes don’t “visually combine inputs” — they operate on whatever single stream they receive, so you always need an explicit merge when working with multiple generators.