Ciao!

I'm running Processing 0125 on Win xp SP2.

Does anyone know how to get a better clock resolution than the one millis() returns?

on my system I just get milliseconds updates with a 15-16ms precision, run the code for an example:

//

int t0,t1,dt;

void setup(){
 

}

void draw(){
 
 dt=t1-t0;
 
 t0=t1;
 t1=millis();
 
 
 println(dt);

}

//output

0

16

0

16

15

16

16

15

16

31

0

16

15

32

...


as you can see the difference between the first time measurement t0 and the time measurement in the following frame t1 is in 15-16 ms steps.

it should depend on the system clock used by processing to read the millis() time. Is there a way to get a better precision like 1ms?

Thanks!

thanks John, so the only way to get a better precision is to run at higher fps?

for example, I need something to happen PRECISELY 48 times every second.

so every 1000/48 = 20.83333333... ms something happens.

how to achieve this?

with the current millis() solution I can check if something has happened with a resolution of 16ms which is too low for what I need.

claudiomidolo wrote on Nov 12^th, 2007, 2:57am:


You can try setting frameRate(48); which will do it's best to make the draw function run 48 times a second. However it is impossible to guarantee to get anything to run every 20.83 milliseconds, due to how your computer's task scheduling and multi-tasking works, the best you can get is approximately 48 times a second, ish.