project method

V3 project(
  1. V3 o
)

Implementation

V3 project(V3 o) {
  final v1dv2 = (x*o.x + y*o.y + z*o.z);
  final v2dv2 = (o.x*o.x + o.y*o.y + o.z*o.z);
  final mag = v1dv2/v2dv2;
  return _v3(
    o.x*mag,
    o.y*mag,
    o.z*mag,
  );
}