I find it fairly easy to switch direction back and forthOriginally Posted by Sebastiani
also,
http://www.moillusions.com/wp-conten...calculator.jpg
I find it fairly easy to switch direction back and forth
also,
http://www.moillusions.com/wp-conten...calculator.jpg
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>> I find it fairly easy to switch direction back and forth
So I guess that would make you ambi-neural?
>> also, http://www.moillusions.com/wp-conten...calculator.jpg
Um, is that really considered an illusion?
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
It's not photoshopped
YouTube - Can you believe what you see
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>> It's not photoshopped
So, then how does it work?
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
Mostly by a wide-angle lens, I'd say. Makes things closer look bigger.
And the curved shape fitting inside the other is in itself a known optical illusion.
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Mats
Compilers can produce warnings - make the compiler programmers happy: Use them!
Please don't PM me for help - and no, I don't do help over instant messengers.
>> Mostly by a wide-angle lens, I'd say. Makes things closer look bigger.
You're referring to the calculator illusion?
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
1: take a photo of your hand in front of your desktop
2: set that as your desktop
3: move calculator into your hand
4: take a photo of your hand in front of your desktop
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OK, got it.
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
No, I was referring to the YouTube video that ಠ_ಠ posted.
--
Mats
Compilers can produce warnings - make the compiler programmers happy: Use them!
Please don't PM me for help - and no, I don't do help over instant messengers.
>> No, I was referring to the YouTube video that ಠ_ಠ posted.
Right. That's just a shot from an inclined plane, correct?
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
Speaking of illusions, ever since I was a kid I've been fascinated with magic tricks. David Copperfield was one of my favorites. These days, though, Chris Angel seems to be the best showman in that genre. I know a lot of his stuff is staged with actors and such, but others are done with real spectators, some with pretty convincing effects. The "crushed by a steam-roller on a bed of glass" is a good example. Still, he does get on my nerves sometimes, I admit, and some of his tricks just seem unnecessarily morbid. Anyone else have favorite magician/magic tricks?
EDIT:
Here is a full length version of the steam-roller trick, in case anyone is interested...
Last edited by Sebastiani; 06-21-2009 at 02:01 AM.
Code:#include <cmath> #include <complex> bool euler_flip(bool value) { return std::pow ( std::complex<float>(std::exp(1.0)), std::complex<float>(0, 1) * std::complex<float>(std::atan(1.0) *(1 << (value + 2))) ).real() < 0; }
I like how he was in a ditch
as far as magicians go I like Darren Brown
Last edited by ಠ_ಠ; 06-21-2009 at 02:14 AM.
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That one's pretty amazing. I was so convinced it was fake I downloaded the image twice, once while it was clockwise and once counter-clockwise.
diff says they are the same file and going thru frame by frame in gimp they look the same to me too. I even looked at just one image at a time locally. The progression of frames in the gif is both clockwise and counterclockwise -- it wags back and forth.
I find this one frightening in that it just seems to alternate intermittently for me, and then I cannot do anything to make it change back the other way! Then it just happens...
Last edited by MK27; 06-21-2009 at 09:08 AM.
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
Yeah I have been looking at the dancer for awhile and can't get it it to go counter-clockwise. Only clockwise.
The motion of the animation supports the fact she is going clockwise anyways...when she faces you she is going from right to left...when is facing away from you, left to right...
Dancer turns clockwise for me but I can get it to turn counter-clockwise.
