Squares Circles and Lines - OpenProcessing

mySketch
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int frameRateValue;
int gridSize = 20;
int margin = 0;
float gutter = 0;
float cellsize;
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void setup() {
  size(500, 500);
  colorMode(RGB);
  frameRateValue = 24;
  frameRate(frameRateValue);
  rectMode(CENTER);
  background(0);
  cellsize = ( width - (2 * margin) - gutter * (gridSize - 1) ) / (gridSize - 1);
}
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void draw() {
  
  int circleNumber = 0;
  for (int i=0; i<gridSize; i++) {
    for (int j=0; j<gridSize; j++) {
      circleNumber = (i * gridSize) + j;
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      float centerpointX = margin + cellsize * i + gutter * i;
      float centerpointY = margin + cellsize * j + gutter * j;
      movingCircle(centerpointX, centerpointY, cellsize, circleNumber);
    }
  }
}
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void movingCircle(float centerpointX, float centerpointY, float size, int circleNum) {
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  float finalAngle;
  finalAngle = frameCount + circleNum;
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  //the angle of rotation for each hand is affected by the frameRate and angle;  
  float endpointX = centerpointX + (size / 2) * sin(PI / frameRateValue * finalAngle);
  float endpointY = centerpointY + (size / 2) * cos(PI / frameRateValue * finalAngle);
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  noStroke();
  fill(map(endpointX,0,500,0,255), 122, 121, 20);
  if (sin(PI / frameRateValue * finalAngle) == 1) {
    rect(endpointX, endpointY, frameRateValue, 100);
  }
  if (cos(PI / frameRateValue * finalAngle) == 1) {
    rect(endpointY, endpointX, 100, frameRateValue); 
  }
​
  
  ellipse(endpointX, endpointY, size/5, size/5);
  noFill();
  stroke(map(endpointX,0,500,0,255), 122, 121, 20);
  strokeWeight(3);
  line(endpointX, endpointY, centerpointY, endpointX-100); //sewing machine
}
​
/*
 * keyReleased function
 *
 * called automatically by Processing when a keyboard key is released
 */
void keyReleased() {
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  // right arrow -- increase frameRateValue
  if (keyCode == RIGHT && frameRateValue < 60) {
    frameRateValue++;
  }
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  // left arrow -- decrease frameRateValue
  if ( keyCode == LEFT && frameRateValue > 1) {
    frameRateValue--;
  }
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  // set the frameRate and print current value on the screen
  frameRate(frameRateValue);
  println("Current frame Rate is: " + frameRateValue);
}