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Syntax issue (Read 1074 times)
despo
Syntax issue
Apr 28th, 2010, 7:34am  
Hi all, I'm new to the community and it's been my first year to experiment with Processing.

Im in the middle of a Media Art course, one of the subjects that Im currently investigating is Glitches be it purpously done or random.
I've tried to write a script but it seems to have a problem and I can't figure it out.

Could you help me out here ?



for(int i=0; i<10; 1++)(
 byte b() = LoadBytes("");
 for (int z=1000; z<b,lenght=1000; z=z+int(random(1500)))(
   b[z]=byte(int(random(254)));
   )
   saveBytes("___out_"+i+".jpeg", b);
)
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martin_p
Re: Syntax issue
Reply #1 - Apr 28th, 2010, 8:29am  
Could it be LoadBytes should loadBytes, case is important Angry
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despo
Re: Syntax issue
Reply #2 - Apr 28th, 2010, 9:13am  
martin_p wrote on Apr 28th, 2010, 8:29am:
Could it be LoadBytes should loadBytes, case is important Angry



Well this is where the file should be inputted, yet nothing happends.
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PhiLho 
Re: Syntax issue
Reply #3 - Apr 28th, 2010, 9:15am  
for(int i=0; i<10; 1++)( -> i++

byte b() = LoadBytes("");
Syntax is incorrect. If LoadBytes is supposed to return an array of bytes, it should be:
byte[] b = LoadBytes("");

The ,lenght=1000 part in the for loop is suspicious too: remove it, it isn't used anyway.
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PhiLho 
Re: Syntax issue
Reply #4 - Apr 28th, 2010, 9:19am  
Beside, if you randomly change bytes in a .jpg file, you will only get a corrupted file (which cannot be opened by any image viewer), not a file with altered pixels (don't forget data is compressed, and you must not touch metadata).

You have to load the image, randomize pixels in it, and save as image.
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despo
Re: Syntax issue
Reply #5 - Apr 28th, 2010, 9:22am  
PhiLho  wrote on Apr 28th, 2010, 9:15am:
for(int i=0; i<10; 1++)( -> i++

byte b() = LoadBytes("");
Syntax is incorrect. If LoadBytes is supposed to return an array of bytes, it should be:
byte[] b = LoadBytes("");

The ,lenght=1000 part in the for loop is suspicious too: remove it, it isn't used anyway.


Thanks, the lenght was indeed not really used.
Thanks for the correction, yet it still gives me "expecting RPAREN, found 'b'"
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TfGuy44
Re: Syntax issue
Reply #6 - Apr 28th, 2010, 7:11pm  
for(int i=0; i<10; i++)(

should be

for(int i=0; i<10; i++){

Actually you're using () instead of {} in quite a few places...
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PhiLho 
Re: Syntax issue
Reply #7 - Apr 29th, 2010, 2:34am  
This Topic was moved here from Programs by PhiLho.
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