Amazing spiral! Help?

Processing Coding Questions
1

float m = 0;
void setup(){

fullScreen(P3D);
}

void draw(){
background(250);
rotateX(frameCount * 0.01);
translate(400,500);

for(float m = 0; m < 5; m++){

pushMatrix();
for(float i = 0; i < 80; i++){
  translate(sin(frameCount * 0.005 + m) * 10, sin(frameCount * 0.005 + m) * 10, i * 1);

  rotateY(frameCount * 0.005);
  pushMatrix();
  fill(40);
  rect(100, 6, 20,5); 
  
  popMatrix();
}

popMatrix();
}
}

I would like this design to be centered on my screen and not floating above. Can you help?

2

https://processing.org/reference/translate_.html
i think it is centered if you move the translate up

void draw() {
  background(200, 200, 0);
  translate(width/2, height/2);
  rotateX(frameCount * 0.01);
//...