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[[Category:Scripting Reference]]
The Cross Product is a property of [[Vectors|vectors]]. The cross product takes two vectors and returns a third, which is perpendicular, or orthogonal, to the passed vectors. This vector is referred to as the normal vector, which normally is corrected to have a total magnitude of one in mathematics.


GGGG RRRR  A  A  L
== Definition ==
G    R R A A A A L
If vectors u and v are crossed ("u cross v"), the magnitude of the normal vector is equal to |u||v|sin(θ). Thus,
G GG RRRR AAA AAA L
  |u × v| = |u||v||sin(θ)||'''n'''|
G G RR  A A A A L
  |u × v| = |u||v||sin(θ)|
GGGG R RR A A A A LLLLLL
In other applications, this magnitude has been found to be equal to the area of the parallelogram whose vertecies are at '''0''', '''u''', '''u'''+'''v''', and '''v'''.


Viper's Graal Issues.
In addition,
u × '''0''' = '''0'''
u × v = -(v × u)
(ru) × (sv) = (rs) u × v (where r and s are scalars)


Hello everyone, as of late, many people have been attacking me on the issues and matters,
== General Application of the Cross Product ==
trying to lie about things, bend the truth, and downright spin to make me and others of my cause
It is common practice in mathematics to write vectors as sums of the unit vectors, '''i''', '''j''', and '''k'''. These each have a magnitude of one and, from the origin, move precisely 1 unit on the x, y, and z axes respectively.
look bad, in this text document i will discuss and lay to rest the issues that matter.


I have been involved graal for over three years now, and i used to really like Graal and its
Say, then, that we have two vectors, u and v.
admins alot, then slowly after about a year Graal and its admins went in a bad downward spiral,
u = &lt;u<sub>1</sub>,u<sub>2</sub>,u<sub>3</sub>&gt;
i still stuck with graal in hopes graal would pull itself out of this hole and unixmad would go
v = &lt;v<sub>1</sub>,v<sub>2</sub>,v<sub>3</sub>&gt;
back to the right path, this however did not happen, instead unixmad and even stefan went fouler
We can rewrite these vectors in terms of '''i''', '''j''', and '''k'''.
and lower than i could have imageined, First with fireing Pachuka and Fuitad, two of the BEST
u = u<sub>1</sub>'''i''' + u<sub>2</sub>'''j''' + u<sub>3</sub>'''k'''
graal admins ever in my view for no other reason than disagreeing with his future plans, then if
v = v<sub>1</sub>'''i''' + v<sub>2</sub>'''j''' + v<sub>3</sub>'''k'''
just fireing them was not bad enough, he threatend to sue them and kill they're families, this
We can then "multiply" them in an algebraic manner.
was so wrong and bad Fuitad even said he would punch unixmad in the face for saying that if he
u &times; v = (u<sub>1</sub>v<sub>1</sub>)'''i''' &times; '''i''' + (u<sub>1</sub>v<sub>2</sub>)'''i''' &times; '''j''' + (u<sub>1</sub>v<sub>3</sub>)'''i''' &times; '''k''' + (u<sub>2</sub>v<sub>1</sub>)'''j''' &times; '''i''' + (u<sub>2</sub>v<sub>2</sub>)'''j''' &times; '''j''' +
met him in real life, but that was just the beginning of the downward spiral unixmad foolishly
        (u<sub>2</sub>v<sub>3</sub>)'''j''' &times; '''k''' + (u<sub>3</sub>v<sub>1</sub>)'''k''' &times; '''i''' + (u<sub>3</sub>v<sub>2</sub>)'''k''' &times; '''j''' + (u<sub>3</sub>v<sub>3</sub>)'''k''' &times; '''k'''
invoked onto graal, he then blatantly STOLE a domain name graal.net from Owl Shimy which costed
We can remove immediately any terms where the vector is crossing itself. The angle between two parallel vectors, a and b, is 0, thus a &times; b = |a||b|sin(0)|n| = 0 . So, the above statement simplifies to
over 30$ US Dollars, and never gave it back to him and never paid him for the cost of the domain,
 
he also threatend to sue Owl Shimy and kill his family although it was Unixmad which stole the
u &times; v = (u<sub>1</sub>v<sub>2</sub>)'''i''' &times; '''j''' + (u<sub>1</sub>v<sub>3</sub>)'''i''' &times; '''k''' + (u<sub>2</sub>v<sub>1</sub>)'''j''' &times; '''i''' + (u<sub>2</sub>v<sub>3</sub>)'''j''' &times; '''k''' + (u<sub>3</sub>v<sub>1</sub>)'''k''' &times; '''i''' + (u<sub>3</sub>v<sub>2</sub>)'''k''' &times; '''j'''
domain from Owl Shimy, then around Graal1.3.1 he blocked off Gservers officially and threatend
Because the cross product reflects the normal vector, the following hold:
to sue anyone that ran the former Gservers, although they were released as "Freeware" and
i &times; j = -(j &times; i) = k
actually used to encourage people to use the Gservers, this was a blatant attempt to monopolise
j &times; k = -(k &times; j) = i
, threaten, and intemidate that players that actually helped graal and supported him, he then
k &times; i = -(i &times; k) = j
made claims he copyrighted "Graal" and would contact so called "Lawres" about anyone that used
Then, we can simplify our equation further:
the name "Graal" or had "Graal Files" on there websites, although graal was distributed as
u &times; v = (u<sub>1</sub>v<sub>2</sub>)'''k''' + (u<sub>1</sub>v<sub>3</sub>)(-'''j''') + (u<sub>2</sub>v<sub>1</sub>)(-'''k''') + (u<sub>2</sub>v<sub>3</sub>)'''i''' + (u<sub>3</sub>v<sub>1</sub>)'''j''' + (u<sub>3</sub>v<sub>2</sub>)(-'''i''')
"Freeware" or "Shareware" and had no official software copyrights related to it, and that the
      = (u<sub>2</sub>v<sub>3</sub>-u<sub>3</sub>v<sub>2</sub>)'''i''' + (u<sub>3</sub>v<sub>1</sub>-u<sub>1</sub>v<sub>3</sub>)'''j''' + (u<sub>1</sub>v<sub>2</sub>-u<sub>2</sub>v<sub>1</sub>)'''k'''
name "Graal" was actually the name of a holy sacred golden cup used in some religion, and in that
      = (u<sub>2</sub>v<sub>3</sub>-u<sub>3</sub>v<sub>2</sub>)'''i''' - (u<sub>1</sub>v<sub>3</sub>-u<sub>3</sub>v<sub>1</sub>)'''j''' + (u<sub>1</sub>v<sub>2</sub>-u<sub>2</sub>v<sub>1</sub>)'''k''' (u-components are  in order)
he has commited blasphemy against whatever religion has the so called "Holy Graal", then later on
This describes the direction of the normal vector to the vectors u and v. This sum can be expressed in [[Matrix|matrices]]
Unixmad fired SuperNick, because of his country and his origion and called him an American Asian
<table>
slut, this was the first sign of racism on the part of Unixmad, towards Graal1.4.1 Unixmad was
  <tr>
secretly unwrapping his sadistic plans, he then started claiming credit and claiming to own
    <td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=</td>
the copyrights to graal, although unixmad has done nothing but host some stupid weak as servers,
    <td>
and yet Stefan Knorr has done all the real work for Graal, and was the one to make ZeldaOnline
      <table frame="vsides" style="border: 1px solid black;">
, GraalOnline in the first place and has written every bit of codeing for the Graal Client ,
        <tr>
Gserver, RC, ect, yet unixmad the worthless pile of trash that he is steals all credit for Graal,
          <td>u<sub>2</sub></td>
then in February 2001, Unixmad and Antago release Graal2001 and the start of the "Pay to Play"
          <td>u<sub>3</sub></td>
system, now i have no problem with the fact that it is pay to play, the issue is when you PAY
        </tr>
for something you actually expect to get the worth while of your money in this product, but
        <tr>
instead they got a shittily made level generated land that was 99% empty, the NPCs were and are
          <td>v<sub>2</sub></td>
laggy as hell, and there were no quests, and there is only two shitty things today for hearts
          <td>v<sub>3</sub></td>
that suck so much i refuse to even call them quests, and to add to that about 40% of everyone
        </tr>
that paid and gave unixmad there credit card number NEVER got the accounts they paid 27$ or more
      </table>
for, and those that did clearly got chumped out by a cheap peice of crap that aint worth paying
    </td>
for, it sucked so badly that most people played on Graal Classic still, even those that foolishly
    <td>'''i''' - </td>
paid for pay to play accounts, and in an attempt to "FORCE" people to pay for a shitty product
    <td>
they do not want against they're will Unixmad hired "Tyhm" to deface and ruin GraalClassic in
      <table frame="vsides" style="border: 1px solid black;">
an attempt to make it buggier and less fun than even Graal2001, about this time i was disgusted
        <tr>
with unixmad and most of the other admins and decided to downright turn against Graal and for the
          <td>u<sub>1</sub></td>
most part stop playing the peice of crap in general. People starting getting angry, complaining,
          <td>u<sub>3</sub></td>
asking for help, and asking for refunds, of coarse unixmad gave noone a cash refund, and simply
        </tr>
deleted and banned "PAID ACCOUNTS" of those who complained, asked for help, or asked for a refund
        <tr>
these are PAYING CUSTOMERS, they have the rights of basic service that they PAID for, unixmad
          <td>v<sub>1</sub></td>
promises pay to play players a quality product and customer service, but instead gives them a
          <td>v<sub>3</sub></td>
grade F product and ripps off his customers and delete they're accounts that they PAID HIM money
        </tr>
for, his excuse? Credit card fraud, when infact at least 90% of the people he bans for credit
      </table>
card fraud pay legitamately with there OWN credit cards or pay via paypal by check, and yet
    </td>
Unixmad has stolen and used others credit card numbers to buy things for himself on several
    <td>'''j''' + </td>
occassions, he also claims he needs pay to play money to keep graal alive and running, yet there
    <td>
has been evidence that he makes at least 90% profit out of the monies he gets, and that he uses
      <table frame="vsides" style="border: 1px solid black;">
illegal porn ad banners and illegal cookie style web tracking and giveing email adresses of the
        <tr>
players and even phone numbers of every player to spam and telemarketting companies without
          <td>u<sub>1</sub></td>
there permission, he even keeps personal player info, includeing email, adress, and phone number
          <td>u<sub>2</sub></td>
on unsecure servers which have already been leaked out, such info about people should not be on
        </tr>
a public webserver accessable to the internet in anyway, then after all that Unixmad starts
        <tr>
banning african american people, asians, koreans, and or people with images of people of that
          <td>v<sub>1</sub></td>
race from the Graal2001 forums and graal itself, yet again they are paying customers and this
          <td>v<sub>2</sub></td>
is another sickening act of racism on the part of Unixmad and GraalOnline, and then even more
        </tr>
disgusting is what Stefan posts on the Graal2001 forums, he makes several anti american, racist,
      </table>
pro terrorist, pro nazi, and pro taliban comments on that post and goes on and on several pages
    </td>
bashing americans, this post was offense, obcene, and disgusting to many people includeing myself
    <td>'''k'''</td>
. If all that does not make you sick to your stomache or dislike unixmad yet, i am far from done,
  </tr>
then Unixmad proceeds to illegally DDOS webservers of mafukie and make threats to him over the
</table>
phone, and has phone assaulted me over 40 times a day between midnight and 5am, and has made
<table><tr><td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=</td><td><table frame="vsides" style="border: 1px solid black;"><tr> <td>'''i'''</td><td>'''j'''</td><td>'''k'''</td> </tr><tr> <td>u<sub>1</sub></td><td>u<sub>2</sub></td><td>u<sub>3</sub></td> </tr><tr> <td>v<sub>1</sub></td><td>v<sub>2</sub></td><td>v<sub>3</sub></td> </tr></table></td></tr></table>
threats to sue dozens of people, kill there families, and shut down innocent websites and
 
servers, while hosting illegal stuff and doing illegal things himself with the use of his own
== The Cross Product in GraalScript ==
wanadoo.fr servers, stuff which includes child porn, bestiality porn, DVD Piracy, DDOS Attacks,
The cross product of two vector arrays in Graal can be obtained through the vectorcross({{graycourier|u}},{{graycourier|v}}) function. It's return value is a vector, w<sub>1</sub>'''i''' + w<sub>2</sub>'''j''' + w<sub>3</sub>'''k''', where the vector w is calculated from the determinant of the above [[Matrix|matrix]].
theft of copyrighted materials from gameing companies such as nintendo, Credit Card fraud, theft,
spamming, phone harrassment, useage of illegal pirated corperate softwares, all this just to
start the list of what Unixmad, Stefan, and they're servers are doing 24/7 for nearly 4 years now
, anyone that likes unixmad or thinks he is a good person even after all this is clearly a fool,
everything in this document is the truth and why i hate unixmad so much, if you like unixmad
after all these sickening things he does, then you are no better than a KKK or Neo Nazi member
and should go kill yourselfs, i do not tolerate facists, racists, or nazis, they are all bad
people, and unixmad is one of the worst of the worst, and no person with any morales could
tolerate or support such a person like Stephane Portha or Stefan Knorr. The people that spin, lie
and bend the truth in support of unixmad will always exist, but i will always reveal the truth
about unixmad, and EVERYTHING said in this document is true, despite what any assclowns try and
say about this, and this supriseingly enough is only 1% of the bad things Unixmad has done, how
some people even tolerate, none the less support such a bad person is beyond me...
I fight against bad people like unixmad, why? Because unlike many others in this world i actually
care about other people, and i will do everything in my power to stop unixmad from hurting graal
or its innocent players, many say i want to destroy and kill graal, this is NOT true, i used to
love graal, i only wish to stop unixmad's evil sadistic illegal actions and restore graal to the
great game it used to be when it was "for the players, by the players" , but if i have to destroy
GraalOnline in exchange to stop unixmad's tyranny, it will be regreteable, but sometimes some
sacrifices have to be made for the greater good, lets just hope that unixmad drops dead and that
sacrifice never has to be made... I love graal and lots of its players, and i wish to someday
restore it to the grandness it once had, but bad people like unixmad must be gotten rid of if
that is to be achieved...

Latest revision as of 20:40, 5 April 2010

The Cross Product is a property of vectors. The cross product takes two vectors and returns a third, which is perpendicular, or orthogonal, to the passed vectors. This vector is referred to as the normal vector, which normally is corrected to have a total magnitude of one in mathematics.

Definition

If vectors u and v are crossed ("u cross v"), the magnitude of the normal vector is equal to |u||v|sin(θ). Thus,

|u × v| = |u||v||sin(θ)||n| 
|u × v| = |u||v||sin(θ)|

In other applications, this magnitude has been found to be equal to the area of the parallelogram whose vertecies are at 0, u, u+v, and v.

In addition,

u × 0 = 0
u × v = -(v × u)
(ru) × (sv) = (rs) u × v (where r and s are scalars)

General Application of the Cross Product

It is common practice in mathematics to write vectors as sums of the unit vectors, i, j, and k. These each have a magnitude of one and, from the origin, move precisely 1 unit on the x, y, and z axes respectively.

Say, then, that we have two vectors, u and v.

u = <u1,u2,u3>
v = <v1,v2,v3>

We can rewrite these vectors in terms of i, j, and k.

u = u1i + u2j + u3k
v = v1i + v2j + v3k

We can then "multiply" them in an algebraic manner.

u × v = (u1v1)i × i + (u1v2)i × j + (u1v3)i × k + (u2v1)j × i + (u2v2)j × j + 
        (u2v3)j × k + (u3v1)k × i + (u3v2)k × j + (u3v3)k × k

We can remove immediately any terms where the vector is crossing itself. The angle between two parallel vectors, a and b, is 0, thus a × b = |a||b|sin(0)|n| = 0 . So, the above statement simplifies to

u × v = (u1v2)i × j + (u1v3)i × k + (u2v1)j × i + (u2v3)j × k + (u3v1)k × i + (u3v2)k × j

Because the cross product reflects the normal vector, the following hold:

i × j = -(j × i) = k
j × k = -(k × j) = i
k × i = -(i × k) = j

Then, we can simplify our equation further:

u × v = (u1v2)k + (u1v3)(-j) + (u2v1)(-k) + (u2v3)i + (u3v1)j + (u3v2)(-i)
      = (u2v3-u3v2)i + (u3v1-u1v3)j + (u1v2-u2v1)k
      = (u2v3-u3v2)i - (u1v3-u3v1)j + (u1v2-u2v1)k (u-components are  in order)

This describes the direction of the normal vector to the vectors u and v. This sum can be expressed in matrices

        =
u2 u3
v2 v3
i -
u1 u3
v1 v3
j +
u1 u2
v1 v2
k
        =
ijk
u1u2u3
v1v2v3

The Cross Product in GraalScript

The cross product of two vector arrays in Graal can be obtained through the vectorcross(u,v) function. It's return value is a vector, w1i + w2j + w3k, where the vector w is calculated from the determinant of the above matrix.