Function length

Returns length of line, polyline or between two points

Param: aOrLine

Point A, line or polyline (array of lines)

Param: pointB

Point B, if first parameter is a point

Returns

Length (total accumulated length for arrays)

length(a: Geometry.Point, b: Geometry.Point): number
Returns the length between two points
```
import { Lines } from 'https://unpkg.com/ixfx/dist/geometry.js'
Lines.length(ptA, ptB);
```
Parameters
- a: Geometry.Point
  First point
- b: Geometry.Point
  Second point
Returns number
length(line: Geometry.Line | Geometry.PolyLine): number
Returns length of line. If a polyline (array of lines) is provided, it is the sum total that is returned.
```
import { Lines } from 'https://unpkg.com/ixfx/dist/geometry.js'
Lines.length(a: {x:0, y:0}, b: {x: 100, y:100});
Lines.length(lines);
```
Parameters
- line: Geometry.Line | Geometry.PolyLine
  Line
Returns number