Function fromPivot

fromPivot(
    origin?: Geometry.Point,
    length?: number,
    angleRadian?: number,
    balance?: number,
): Readonly<{ a: Geometry.Point; b: Geometry.Point }>
Creates a line from an origin point.
```
// Line of length 0.2 with middle at 0.5,0.5
fromPivot({ x:0.5, y:0.5 }, 0.2);
// Same line, but on an angle
fromPivot({ x:0.5, y:0.5 }, 0.2, degreesToRadian(45));

// ...now with pivot point at 20%, rather than center
fromPivot({ x:0.5, y:0.5 }, 0.2, degreesToRadian(45), 0.2);
```
Examples:
- Angle of 0 (deg/rad) results in a horizontal line,
- Angle of 90deg in a vertical line.
- Angle of 45deg will be angled downwards.
Parameters
- origin: Geometry.Point = ...
  Origin to pivot around
- length: number = 1
  Total length of line
- angleRadian: number = 0
  Angle of line, in radians
- balance: number = 0.5
  Percentage of where origin ought to be on line. Default: 0.5, meaning the middle of line
Returns Readonly<{ a: Geometry.Point; b: Geometry.Point }>