int pixelSize=2;
  PGraphics pg;
  
  void setup(){
    size(640, 360);
    // Create buffered image for plasma effect
    pg = createGraphics(160, 90, P2D);
    colorMode(HSB);
    noSmooth();
  }
  
  void draw()
  {
    float  xc = 25;
  
    // Enable this to control the speed of animation regardless of CPU power
    // int timeDisplacement = millis()/30;
  
    // This runs plasma as fast as your computer can handle
    int timeDisplacement = frameCount;
  
    // No need to do this math for every pixel
    float calculation1 = sin( radians(timeDisplacement * 0.61655617));
    float calculation2 = sin( radians(timeDisplacement * -3.6352262));
    
    // Output into a buffered image for reuse
    pg.beginDraw();
    pg.loadPixels();
  
    // Plasma algorithm
    for (int x = 0; x < pg.width; x++, xc += pixelSize)
    {
      float  yc    = 25;
      float s1 = 128 + 128 * sin(radians(xc) * calculation1 );
  
      for (int y = 0; y < pg.height; y++, yc += pixelSize)
      {
        float s2 = 128 + 128 * sin(radians(yc) * calculation2 );
        float s3 = 128 + 128 * sin(radians((xc + yc + timeDisplacement * 5) / 2));  
        float s  = (s1+ s2 + s3) / 3;
        pg.pixels[x+y*pg.width] = color(s, 255 - s / 2.0, 255);
      }
    }   
    pg.updatePixels();
    pg.endDraw();
  
    // display the results
    image(pg,0,0,width,height); 
  
  }