How do i relate the use of matrices to computer graphcs?

Hardware

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This PDF may be useful to you

by OH Smeg · 8 years ago In reply to How do i relate the use o ...

http://www.gamedev.net/reference/articles/download/course1.pdf

Otherwise I'm not really sure what you are asking here.

Col

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Reponse To Answer

by victor.indrajit · 8 years ago In reply to This PDF may be useful to ...

Can I get the PDF
please send it to my email : victor.indrajit@gmail.com

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Reponse To Answer

by seanferd · 8 years ago In reply to This PDF may be useful to ...

victor: Don't post your email on the internet unless you like spam. Besides, most people here are smart enough not to send <i>their</i> email addresses to anyone they don't know. :0

Anyway, using the search function, or <i>following the explicit instructions</i> on the 404 page not good enough?
http://archive.gamedev.net/reference/articles/download/course1.pdf

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Simple one is wire graphics

by Tony Hopkinson · 8 years ago In reply to How do i relate the use o ...

Asteroids, Star wars.
Any of the 3D charts you can do in office..
CAD software, font manipulation,
like drawing Easter round an egg, even aero in Vista.

I think you are missing the boat though, the reasoning for using matrices is matrix algebra.

We measure computing speed in floating point operations for a reason.

Just get them to work out how many flops using a matix saves, you never know they might come up with some of the cunning shortcuts the big boys use as well.

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Wire Graphics etc

by Jotrac · 8 years ago In reply to Simple one is wire graphi ...

Many thanks, the PDF was very useful. Suggestions where matrices can be applied were brilliant! I did not get the meaning of the last sentence though. Can you help me understand what you really meant. Otherwise thank you very much for your help! Much appreciated!

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Ok take a 3d

by Tony Hopkinson · 8 years ago In reply to Wire Graphics etc

cube say a 16 x 16 x 16

Lets say you wanted to move it n points on each axis
That's 12,288 calculations without matrix algebra

With matrix algebra after you've set up the matrix which in is a one off.
it's the same.

Now lets say we wanted to move it n points in each axis rotate it n degrees in each axis no matrix algebra , it's a lot of number crunching,
with it's still 12,288...

That's the beauty of it...

Another little trick.

You need a 3x3 matrix to do 2D transformations.
So to keep with rules you have to describe each point as a 1 X 3
e.g
P(100,50,1)
X
T
(1,0,0)
(0,1,0)
(10,10,1)

gives you
P'(110,60,1)
Always 1 on the end so don't bother calculating it, reduced you work by a third..

Use the math, don't let it use you

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