How to use Sample Index node in Oraphim

Type ID: geometry.sample_index
Category: Utility

What this node does

Samples index data for downstream field or geometry operations.

The current Oraphim runtime registers 4 sockets and 5 properties for this node. Its main registered inputs are Geometry, Value, Index; its main outputs are Value. The tables below are generated from the runtime registry rather than a handwritten approximation.

Inputs

Socket	Key	Type
Geometry	geometry	Geometry3D
Value	value	Float
Index	index	Int

Outputs

Socket	Key	Type
Value	outValue	Float

Controls

Control	Key	Type	Group	Registry default
Value	value	Float	Inputs	0.0
Index	index	Int	Inputs	0.0
Data Type	data_type	String	Node	0.0
Domain	domain	String	Node	0.0
Clamp	clamp	Bool	Node	0.0

How to use it

1. Add Sample Index from node search. Use geometry.sample_index when you need the exact registry entry.
2. Connect a compatible Geometry3D source to Geometry. Add the other inputs only when the operation needs them.
3. Start with the registry defaults and adjust Value, Index, Data Type first so you can see the node's effect in isolation.
4. Route Value (Float) into a compatible downstream node, viewer, or output path.
5. Preview a representative frame, change one input/control at a time, and save/reopen reusable graphs to verify persistence.

Practical example

Create a small test graph with Sample Index. Feed a compatible source into Geometry. Change Value away from its registry default and compare the result. Connect Value to a compatible downstream stage so the result is visible. Keeping this test graph small makes socket-type, context, and parameter mistakes easier to diagnose before the node is used in a production graph.

Troubleshooting

• If a connection is rejected, compare the exact socket data types in the tables above; Oraphim graph connections are typed.
• If the result looks unchanged, confirm this node is on the active path to the viewer/output and that the expected graph/resource is selected.
• If a control is unavailable, check required inputs and whether the property belongs to an internal or mode-dependent group.
• If a saved graph behaves differently later, reopen it and verify node identity, connections, and edited property values before rendering.

Related nodes

• Geometry Proximity — geometry.proximity
• Image Info — geometry.image_info
• Sample Curve — geometry.curve_sample
• Sample Nearest Surface — geometry.sample_nearest_surface
• Select Elements — geometry.select_elements

Return to the complete Oraphim node reference.