This array contains the list of current touch pointers. Each pointer is characterized by its x,y coordinate, area, pressure, and a unique ID.
void setup() {
fullScreen();
textFont(createFont("SansSerif", 24 * displayDensity));
textAlign(CENTER, CENTER);
}
void draw() {
background(255);
for (int i = 0; i < touches.length; i++) {
float d = (100 + 100 * touches[i].area) * displayDensity;
fill(0, 255 * touches[i].pressure);
ellipse(touches[i].x, touches[i].y, d, d);
fill(255, 0, 0);
text(touches[i].id, touches[i].x + d/2, touches[i].y - d/2);
}
}