# Vector Lerp¶

## Functionality¶

This node’s primary function is to perform the linear interpolation between two Vectors, or streams of Vectors. If we have two Vectors A and B, and a factor 0.5, then the output of the node will be a Vector exactly half way on the imaginary finite-line between A and B. Values beyond 1.0 or lower than 0.0 will be extrapolated to beyond the line A-B.

## Inputs¶

Vector Evaluate needs two Vertex stream inputs (each containing 1 or more vertices). If one list is shorter than the other then the shortest stream is extended to match the length of the longer stream by repeating the last valid vector found in the shorter stream.

## Parameters¶

Param Type Default Description
mode Enum Lerp
• Lerp will linear interpolate once between each corresponding Vector
• Evaluate will repeatedly interpolate between each member of vectors A and B for all items in Factor input (see example)
Vertex A Vector None first group of vertices (Stream)
Vertex B Vector None second group of vertices (Stream)
Factor Float 0.50 distance ratio between vertices A and B. values outside of the 0.0...1.0 range are extrapolated on the infinite line A, B

## Outputs¶

The content of EvPoint depends on the current mode of the node, but it will always be a list (or multiple lists) of Vectors.

## Example of usage¶

0.5

-0.5

1.5

range float 0.0 ... 1.0 n=10 Evaluate

range float 0.0 ... 1.0 n=10 Lerp

Lerp interpolation with noise

The development thread also has examples: https://github.com/nortikin/sverchok/issues/1098