public static Matrix4 operator *( Matrix4 left, Matrix4 right )
{
Matrix4 result = new Matrix4();
result.m00 = left.m00 * right.m00 + left.m01 * right.m10 + left.m02 * right.m20 + left.m03 * right.m30;
result.m01 = left.m00 * right.m01 + left.m01 * right.m11 + left.m02 * right.m21 + left.m03 * right.m31;
result.m02 = left.m00 * right.m02 + left.m01 * right.m12 + left.m02 * right.m22 + left.m03 * right.m32;
result.m03 = left.m00 * right.m03 + left.m01 * right.m13 + left.m02 * right.m23 + left.m03 * right.m33;
result.m10 = left.m10 * right.m00 + left.m11 * right.m10 + left.m12 * right.m20 + left.m13 * right.m30;
result.m11 = left.m10 * right.m01 + left.m11 * right.m11 + left.m12 * right.m21 + left.m13 * right.m31;
result.m12 = left.m10 * right.m02 + left.m11 * right.m12 + left.m12 * right.m22 + left.m13 * right.m32;
result.m13 = left.m10 * right.m03 + left.m11 * right.m13 + left.m12 * right.m23 + left.m13 * right.m33;
result.m20 = left.m20 * right.m00 + left.m21 * right.m10 + left.m22 * right.m20 + left.m23 * right.m30;
result.m21 = left.m20 * right.m01 + left.m21 * right.m11 + left.m22 * right.m21 + left.m23 * right.m31;
result.m22 = left.m20 * right.m02 + left.m21 * right.m12 + left.m22 * right.m22 + left.m23 * right.m32;
result.m23 = left.m20 * right.m03 + left.m21 * right.m13 + left.m22 * right.m23 + left.m23 * right.m33;
result.m30 = left.m30 * right.m00 + left.m31 * right.m10 + left.m32 * right.m20 + left.m33 * right.m30;
result.m31 = left.m30 * right.m01 + left.m31 * right.m11 + left.m32 * right.m21 + left.m33 * right.m31;
result.m32 = left.m30 * right.m02 + left.m31 * right.m12 + left.m32 * right.m22 + left.m33 * right.m32;
result.m33 = left.m30 * right.m03 + left.m31 * right.m13 + left.m32 * right.m23 + left.m33 * right.m33;
return result;
}