import2

String[] cities;
Table table;
TableRow row;
int frms = 60, rows;
float start[][], end[][];
float l;

void setup() {
  size(540, 270);
  background(0);
  fill(255, 100);
  noStroke();
  table = loadTable("cities.csv", "header");
  rows = table.getRowCount();
  start = new float[rows][2];
  end = new float[rows][2];
  for (int i=0; i<rows; i++) {
    row = table.getRow(i);
    float lat = row.getFloat("lat");
    float lng = row.getFloat("lng");
    float x = map(lng, -180, 180, 0, width);
    float y = map(lat, 90, -90, 0, height);
    end[i][0] = x;
    end[i][1] = y;
    start[i][0] = int(random(width/2));
    start[i][1] = int(random(height/2));
  }
}

void draw() {
  background(0);
  translate(-270, -200);
  scale(4.5);
  for (int i=0; i<rows; i++) {
    float x = lerp(start[i][0], end[i][0], l);
    float y = lerp(start[i][1], end[i][1], l);
    float sz = .25;
    ellipse(x, y, sz, sz);
  }
  if (l<1) l = map(frameCount,1,frms,0,1);
  //if (frameCount<=frms+30) saveFrame("image-###.gif");
}