cpu limited with bigger windows

neptunier

cpu limited with bigger windows

in Integration and Hardware • 11 months ago

hello all,
today i did my first processing programming. my project is visualizing data from a biofeedback software. i was writing easy code, a bouncing ball code with speed regulated through serial communication. that works, but if i make the window size 1000 x 1000, the cpu is at 100% and the serial communication is very slow. it is an older amd 2,5 ghz with a simple graphic card. somehow i was expecting much more speed and fluidity.
also when i run simple bouncing ball code without serial communication on my 2,33 ghz dual core laptop, the cpu is at 95%.

is that normal or is there a way to make it faster. my goal is to control 2 bouncing balls in speed and size through serial communication in fullscreen. i dont need high resolution, but a big window. is that possible with processing or is anybody aware of better (faster) alternatives?
thanks,
michael

Replies(2)

calsign

Re: cpu limited with bigger windows

11 months ago

What you need is optimization for your code. The problem with such programs is that, as the size of the screen goes up, the number of pixels goes up, and the processor speed required to maintain the program goes up. You can always improve the speed, but it will always be faster with a smaller display. To start, show us your code.

neptunier

Re: cpu limited with bigger windows

11 months ago

here is the code i used but i also used one from the example section. for me it is crucial to have a fairly big screen, like a 17" monitor. if i can only use small screens with processing it does not make sense to me. it is also important that the data gets visualized without interruption, like at the latest 1/10 th of a second after the serial comes in.

thanks
michael

so here is the code:

import processing.serial.*;

Serial myPort;      // Serial-Objekt erzeugen
int portIndex = 0; // Arduino-Port
int val;            // Vom seriellen Port empfangene Daten
int x = 0;
int speed = 1;
int sum = 0;

void setup()
{
size(1000, 1000);
println(Serial.list()); // Liste aller Ports ausgeben
println(" Verbinde mit -> " + Serial.list()[portIndex]);
myPort = new Serial(this, Serial.list()[portIndex], 9600);
}

void draw()
{
if ( myPort.available() > 0) // Wenn Daten verfügbar sind,
{
    val = myPort.read();         // einlesen und in val speichern
    println(val);
    if(sum > width)
    {
      val = val * - 1;
    }
     if(sum > 2 * width)
    {
      sum = 0;
    }

    background(255);

    }
move();
display();
}

void move() {
// Change the x location by speed
x = x + val;
sum = sum + val;
}

// A function to display the ball
void display() {
stroke(0);
fill(175);
ellipse(x,100,32,32);
}

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