Spline Extend
Updated: 3 Feb 2025
Cut and extend a parent mesh along a spline
Spline Extend
Method #
This node cuts the parent mesh along the chosen axis, extends the cut faces with subdivisions, and fits the result on to a spline. The spline time values can be modified to determine which part of the spline should be used. This node requires a node that provides a spline be connected to the Spline input. Nodes that provide a spline include Spline and Editable Spline nodes, and geometry nodes which have been converted to splines. If the source provides multiple splines, the extended geometry will be duplicated to each spline.
Parameters
These properties control the core behaviours of the node.
Parameter Details Cut Axis
The axis to perform the cut.
Cut Offset
The offset along the cut axis at which to perform the cut.
Subdivisions
The number of subdivisions of each extended cut face.
Match Spline Subdivision
Controls how the subdivisions generated on the surface react to changes in the spline time min/max.
- When disabled, the number of subdivisions (and thus the number of resultant polygons) remains constant, and move along with Spline Min/Max.
- When enabled, the subdivisions are static along the spline, and dynamically generate along the spline when needed.
Spline Time Min
The minimum of the used spline range, between 0 and 1.
Spline Time Max
The maximum of the used spline range, between 0 and 1.
The properties control the time at which the node is active. See Timeline for editing time segments.
Parameter Details Duration
Control the duration of the node’s time segment.
- Composition Duration : Use the length of the composition for the node’s time segment duration.
- Custom : Set a custom duration for the node’s time segment.
Node Time
The custom start and end time for the node.
Duration (Timecode)
The length of the node’s time segment (in time).
Duration (Frames)
The length of the node’s time segment (in frames).
Time Segment Enabled
Set whether the node’s time segment is enabled or not in the Timeline.
Inputs
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Cut Axis | The axis to perform the cut. |
| Cut Offset | The offset along the cut axis at which to perform the cut. |
| Subdivisions | The number of subdivisions of each extended cut face. |
| Match Spline Subdivision |
Controls how the subdivisions generated on the surface react to changes in the spline time min/max.
|
| Spline Time Min | The minimum of the used spline range, between 0 and 1. |
| Spline Time Max | The maximum of the used spline range, between 0 and 1. |
The properties control the time at which the node is active. See Timeline for editing time segments.
| Parameter | Details |
|---|---|
| Duration |
Control the duration of the node’s time segment.
|
| Node Time | The custom start and end time for the node. |
| Duration (Timecode) | The length of the node’s time segment (in time). |
| Duration (Frames) | The length of the node’s time segment (in frames). |
| Time Segment Enabled | Set whether the node’s time segment is enabled or not in the Timeline. |
| Name | Description | Typical Input |
|---|---|---|
| Spline | The source spline. | Spline |
| Extend Material | The material to use for the extended mesh. | Material |
| Generated Weightmap | Add a weightmap to vary the strength of the deformer across the surface. | Generate Weightmap |
| Transform Modifiers | Apply the transforms of another node to this node. | Null |
| Target Node | Modifiy the rotations of the node to always direct the z axis towards the input. | Null |
| Local Transform Override | Apply the transforms of another node to this node, relative to its parent. | Null |