qMul method

QuaternionD qMul(
  1. QuaternionD o
)

Implementation

QuaternionD qMul(QuaternionD o) => .vec4(
  x*o.w + w*o.x + y*o.z - z*o.y,
  y*o.w + w*o.y + z*o.x - x*o.z,
  z*o.w + w*o.z + x*o.y - y*o.x,
  w*o.w - x*o.x - y*o.y - z*o.z,
);