public static Quaternion operator *(Quaternion quaternion1, Quaternion quaternion2)
{
Quaternion quaternion;
float x = quaternion1.X;
float y = quaternion1.Y;
float z = quaternion1.Z;
float w = quaternion1.W;
float num4 = quaternion2.X;
float num3 = quaternion2.Y;
float num2 = quaternion2.Z;
float num = quaternion2.W;
float num12 = (y * num2) - (z * num3);
float num11 = (z * num4) - (x * num2);
float num10 = (x * num3) - (y * num4);
float num9 = ((x * num4) + (y * num3)) + (z * num2);
quaternion.X = ((x * num) + (num4 * w)) + num12;
quaternion.Y = ((y * num) + (num3 * w)) + num11;
quaternion.Z = ((z * num) + (num2 * w)) + num10;
quaternion.W = (w * num) - num9;
return quaternion;
}