what's that symbol in the expression? it appears here as an unknown character, a rectangle.

if it's % then that's the problem. modulo 0 is undefined, like division by 0.

If it is the modulo then it will cause a division by zero and stop running!

There is absolutely no reason why it is running at 100% CPU I suggest you use the Task Manager to actually identify the process that is using most of the CPU - it maybe something different. I once had the same type of problem but it was caused an HP Network Device Support application running in the background.

The other thing to mention is that just because you specify a frame rate of 60 it doesn't mean you get that, it is an aim. When using the following program

1. void setup(){
     size(640,480);
     frameRate(60);
   }
   
   void draw(){
     if(frameCount % 5 == 1){
       println(frameCount + "\t" + frameRate);
     }
   }
   
   

I got the following results
1     11.486502
6     29.866547
11    40.272724
16    48.455822
21    53.28487
26    55.83973
31    57.64161
36    58.73941
41    59.529625
46    59.61145
51    59.93257
56    59.80937
61    60.074356
66    59.85731

Notice it takes some time before it reaches it's peek. I also tried frameRate(1000) but I peaked at ~78fps - shame really .

> If it is the modulo then it will cause a division by zero and stop running!

maybe (it does on linux, yes), wikipedia says some places define (a % 0) to be a. if it's not % then i'm at a loss for what it could be.

y'know, it might be the println(). think about all the string mangling and io that's involved (especially as it writes output to a logfile as well as the console)

my laptop peaks at about 105.

actually, make the size 320x240 and it's 380 ish. so it's something within draw() itself, probably instantiation or copying of data given that it varies with size.

Thanks for the responses, everyone!

I have a solution!