Use the Release from Edge node to release rays from positions along a set of edges in a 3D geometry.

The Initial Position section is described below. For all other sections, see Release.

Select an Initial position: Mesh based (the default), Uniform distribution, or Density. Mesh based and Density have the same settings as described for the Release node. If Uniform distribution is selected, enter the Number of rays per release N (dimensionless). The union of the selected edges is divided into N segments of approximately equal length, and a ray is released from the middle of each segment.