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Index › Programming Questions & Help › Syntax Questions › probably a preety noob question! for()
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probably a preety noob question! for() (Read 677 times)
brt
probably a preety noob question! for()
May 25th, 2009, 11:47am  
hey! im reading the Processing, a programming book for Visual Designer and artists....

and i got to the for(); Repetition section and  since i had already done some coding i tried to modify the simple code in the book...

and my for() would work with no setup done.... but once i put some void setup() the code would fall apart! can someone tell me what is going on? Code:
void setup(){
  size(400,400);
}

for ( int i = 10; i < 30; i += 5){
  ellipseMode(CORNER);
  ellipse(20,i,80,i+15);
}
this is the code o got.... as simple as this... and it doesn't work with the void setup stuff
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Quark
Re: probably a preety noob question! for()
Reply #1 - May 25th, 2009, 12:55pm  
All code has to be inside a function - this works Smiley

Code:
void setup(){
  size(400,400);
  ellipseMode(CORNER);
  for ( int i = 10; i < 30; i += 5){
    ellipse(20,i,80,i+15);
    } 
}

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brt
Re: probably a preety noob question! for()
Reply #2 - May 25th, 2009, 12:59pm  
thanks a lot! but i tried to put it inside a draw function and it didn't work.... i must have been doing something wrong :s
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Quark
Re: probably a preety noob question! for()
Reply #3 - May 25th, 2009, 1:04pm  
This also works Smiley
Code:

void setup(){
  size(400,400);
  ellipseMode(CORNER);
}

void draw(){
  for ( int i = 10; i < 30; i += 5){
    ellipse(20,i,80,i+15);
  } 
}  
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PhiLho 
Re: probably a preety noob question! for()
Reply #4 - May 25th, 2009, 1:08pm  
Quark wrote on May 25th, 2009, 12:55pm:
All code has to be inside a function

It is right. For those wondering: if you just throw some lines without any function and wonder why it runs: Processing detects the absence of setup() and just create one, putting your code there.

Quote:
i tried to put it inside a draw function and it didn't work

Just show us your code! Smiley

PS.: I see the latest answer of Quark in my preview. You might want to add a call to background() at the start of draw().
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Quark
Re: probably a preety noob question! for()
Reply #5 - May 25th, 2009, 1:09pm  
Quote:
You might want to add a call to background() at the start of draw().


Good point Smiley
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brt
Re: probably a preety noob question! for()
Reply #6 - May 25th, 2009, 1:12pm  
no need to show my code! it works already!i was probably doing something wrong, and the repetitions were giving me a hard time to understand! i understand it now! thank you guys!
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