plus
Direction + Direction => Direction
Returns the vector sum of the two free vectors: both displacements applied together.
Component-wise addition, raw at full Double precision. Both operands carry the exact zero weight, so the sum is at infinity by construction — no finite position can leak in. Opposite operands cancel to the zero direction, which is legal.
Receiver
The left direction.
Return
The component-wise sum, as a Direction.
Parameters
other
The direction added to this one.