# Shortest Edge Paths Node

The *Shortest Edge Paths* node finds paths along mesh edges to a selection of end vertices.
The cost used to define “shortest” can be set to anything. By default there is a constant cost
for every edge, but a typical input would be the length of each edge.

The output is encoded with vertex indices, and is meant to be used on the vertex domain.
For each vertex, the *Next Vertex Input* output stores the index of the following vertex
in the path to the “closest” endpoint.

The node is implemented with Dijkstra’s algorithm.

Tip

The edge length is a natural input to the *Edge Cost*. It can be implemented with the
Edge Vertices Node and the
Vector Math Node set to the *Distance* operation.

See also

This node can be used with the Edge Paths to Selection Node or the Edge Paths to Curves Node to generate new geometry based on the paths.

## Inputs

- End Vertex
A selection of the goal vertices that terminate the edge paths.

- Edge Cost
The weight for each edge, used to determine the meaning of “shortest.”

## Properties

This node has no properties.

## Outputs

- Next Vertex Index
The following vertex on the shortest path from every vertex to the closest endpoint (as defined by the cost input).

- Total Cost
The remaining cost before an end vertex is reached by following the next vertex indices