David's posts

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"This will be more clear soon, but for now, just remember this :

If w == 1, then the vector (x,y,z,1) is a position in space.

If w == 0, then the vector (x,y,z,0) is a direction.

(In fact, remember this forever.)"

Thanks, OpenGL tutorial. Shamefully (?), I did not know 0 meant a vector.

http://www.opengl-tutorial.org/beginners-tutorials/tutorial-3-matrices/

If w == 1, then the vector (x,y,z,1) is a position in space.

If w == 0, then the vector (x,y,z,0) is a direction.

(In fact, remember this forever.)"

Thanks, OpenGL tutorial. Shamefully (?), I did not know 0 meant a vector.

http://www.opengl-tutorial.org/beginners-tutorials/tutorial-3-matrices/

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Let x = x + 1

The first time I saw it, my brain revolted. The math in me screamed: NNNNOOOOOO!!!!

...

http://dlrdave.blogspot.com/2015/09/let-x-x-1.html

The first time I saw it, my brain revolted. The math in me screamed: NNNNOOOOOO!!!!

...

http://dlrdave.blogspot.com/2015/09/let-x-x-1.html

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A story about how music can make people smile. And about how a single act of sharing can lead to THOUSANDS of smiles. MILLIONS even. :-D

Read it and (don't) weep:

http://dlrdave.blogspot.com/2015/08/the-infinite-amplification-potential-of.html

Read it and (don't) weep:

http://dlrdave.blogspot.com/2015/08/the-infinite-amplification-potential-of.html

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San Francisco Has a Vibe: http://dlrdave.blogspot.com/2015/03/san-francisco-has-vibe_20.html

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Extra battery power for your portable device, $12.99 including shipping. Buy it here if you need it:

https://www.livingsocial.com/deals/1315098-portable-smartphone-and-tablet-charger?ref=share-undefined-copy_box-web-deals&rui=197709207&rpi=179035188

https://www.livingsocial.com/deals/1315098-portable-smartphone-and-tablet-charger?ref=share-undefined-copy_box-web-deals&rui=197709207&rpi=179035188

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Love him. Or hate him. Choose you must.

http://thebln.com/2014/09/1980-talk-by-steve-jobs-on-the-future-of-computing/

http://thebln.com/2014/09/1980-talk-by-steve-jobs-on-the-future-of-computing/

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There are still 4 days left to claim your "NSA proof" email account from the folks at ProtonMail... What?..., privacy on the internet? Do tell.

https://www.indiegogo.com/projects/protonmail

https://www.indiegogo.com/projects/protonmail

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We did it! $1,000 raised in 114 hours. Anything more is now gravy. Dad's heading out Sunday. http://igg.me/at/DadToNebraska/x/1802459 Thanks to all!!

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