reject method

Vector3D reject(
  1. Vector3D o
)

Implementation

Vector3D reject(Vector3D 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 .vec3(
    x - (o.x*mag),
    y - (o.y*mag),
    z - (o.z*mag),
  );
}