How to use Arc node in Oraphim

Type ID: geometry.curve_primitive_arc
Category: Generator

What this node does

The Arc node is registered in Oraphim's Generator category and performs the graph operation represented by its sockets and controls below.

The current Oraphim runtime registers 14 sockets and 17 properties for this node. Its main registered inputs are Resolution, Start, Middle; its main outputs are Curve, Center, Normal. The tables below are generated from the runtime registry rather than a handwritten approximation.

Inputs

Socket	Key	Type
Resolution	resolution	Int
Start	start	Vector3
Middle	middle	Vector3
End	end	Vector3
Radius	radius	Float
Start Angle	startAngle	Float
Sweep Angle	sweepAngle	Float
Offset Angle	offsetAngle	Float
Connect Center	connectCenter	Bool
Invert Arc	invertArc	Bool

Outputs

Socket	Key	Type
Curve	out_geometry	Geometry3D
Center	center	Vector3
Normal	normal	Vector3
Radius	radiusOut	Float

Controls

Control	Key	Type	Group	Registry default
Mode	mode	String	Node	0.0
Resolution	resolution	Int	Inputs	16.0
Start X	startX	Float	Inputs	-1.0
Start Y	startY	Float	Inputs	0.0
Start Z	startZ	Float	Inputs	0.0
Middle X	middleX	Float	Inputs	0.0
Middle Y	middleY	Float	Inputs	2.0
Middle Z	middleZ	Float	Inputs	0.0
End X	endX	Float	Inputs	1.0
End Y	endY	Float	Inputs	0.0
End Z	endZ	Float	Inputs	0.0
Radius	radius	Float	Inputs	1.0
Start Angle	startAngle	Float	Inputs	0.0
Sweep Angle	sweepAngle	Float	Inputs	5.4977898597717285
Offset Angle	offsetAngle	Float	Inputs	0.0
Connect Center	connectCenter	Bool	Inputs	0.0
Invert Arc	invertArc	Bool	Inputs	0.0

How to use it

1. Add Arc from node search. Use geometry.curve_primitive_arc when you need the exact registry entry.
2. Connect a compatible Int source to Resolution. Add the other inputs only when the operation needs them.
3. Start with the registry defaults and adjust Mode, Resolution, Start X first so you can see the node's effect in isolation.
4. Route Curve (Geometry3D) 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 Arc. Feed a compatible source into Resolution. Change Mode away from its registry default and compare the result. Connect Curve 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

• Cone — geometry.mesh_primitive_cone
• Cylinder — geometry.mesh_primitive_cylinder
• Distribute Points on Faces — geometry.distribute_points_on_faces
• Curve Circle — geometry.curve_primitive_circle
• Distribute Points in Grid — geometry.distribute_points_in_grid

Return to the complete Oraphim node reference.