I just wanted to ask what does multiplying matrices have to do with computer 3D graphics. I had someone come up to me who said that they are important, but I still don't know why. This is pretty much my question, but I really want it answered. Thanks for any answers given.
Multiplying Matrices and 3D graphics
Page 1 of 16 Replies  665 Views  Last Post: 06 July 2012  08:55 AM
Replies To: Multiplying Matrices and 3D graphics
#2
Re: Multiplying Matrices and 3D graphics
Posted 06 July 2012  08:33 AM
Oh come on.. that's about a two second search in bing. "3d graphics matrices"
#3
Re: Multiplying Matrices and 3D graphics
Posted 06 July 2012  08:34 AM
multiplying 1 matrix by another, transforms one matrix by another.
In 3d graphics you can have a matrix which defines translation(position), scale, and rotation. The scale and rotation are stored as the forward,right,up vectors with the magnitude of them being the scale in that axis.
Now if matrix A says translated to (4,10,3), and matrix B says rotated 90 degrees around the forward axis... then the two combined (multiplied) would result in a matrix that does BOTH
In 3d graphics you can have a matrix which defines translation(position), scale, and rotation. The scale and rotation are stored as the forward,right,up vectors with the magnitude of them being the scale in that axis.
Now if matrix A says translated to (4,10,3), and matrix B says rotated 90 degrees around the forward axis... then the two combined (multiplied) would result in a matrix that does BOTH
#4
Re: Multiplying Matrices and 3D graphics
Posted 06 July 2012  08:40 AM
lordofduct, on 06 July 2012  09:34 AM, said:
multiplying 1 matrix by another, transforms one matrix by another.
In 3d graphics you can have a matrix which defines translation(position), scale, and rotation. The scale and rotation are stored as the forward,right,up vectors with the magnitude of them being the scale in that axis.
Now if matrix A says translated to (4,10,3), and matrix B says rotated 90 degrees around the forward axis... then the two combined (multiplied) would result in a matrix that does BOTH
In 3d graphics you can have a matrix which defines translation(position), scale, and rotation. The scale and rotation are stored as the forward,right,up vectors with the magnitude of them being the scale in that axis.
Now if matrix A says translated to (4,10,3), and matrix B says rotated 90 degrees around the forward axis... then the two combined (multiplied) would result in a matrix that does BOTH
Thank you for the help. Just the answer I was looking for.
Quote
Oh come on.. that's about a two second search in bing. "3d graphics matrices"
When I spent about two hours on Google trying to find a correct answer, nothing appeared on this subject.
#5
Re: Multiplying Matrices and 3D graphics
Posted 06 July 2012  08:47 AM
http://lmgtfy.com/?q...+multiplication
first link, explained it all, you should work on your googlefu
first link, explained it all, you should work on your googlefu
#6
Re: Multiplying Matrices and 3D graphics
Posted 06 July 2012  08:51 AM
I Google'd Modi's search terms: http://www.google.co...lient=firefoxa
These links came up on the first page:
http://www.gamedev.n...emystifiedr695
http://programmedles...sons/index.html
http://www.fastgraph...mes/3drotation/
These links came up on the first page:
http://www.gamedev.n...emystifiedr695
http://programmedles...sons/index.html
http://www.fastgraph...mes/3drotation/
#7
Re: Multiplying Matrices and 3D graphics
Posted 06 July 2012  08:55 AM
Uh thanks for the help. I shall use these as future references.
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