/**
 * Pulses
 *
 * <p>Elie Zananiri<br>
 * CART 253, Winter 2008</p>
 */

// ----------------------------------------------------------------------
// GLOBAL CONSTANTS
// ----------------------------------------------------------------------
int MAX_PULSES = 500;

// ----------------------------------------------------------------------
// GLOBAL VARIABLES
// ----------------------------------------------------------------------
int numPulses = 0;
Pulse pulses[] = new Pulse[MAX_PULSES];

// ----------------------------------------------------------------------
// BUILT-IN FUNCTIONS
// ----------------------------------------------------------------------
void setup() {
  size(400, 400);
  smooth();
  noStroke();
}

void draw() {
  background(0);

  // draw all the pulses
  for (int i=0; i < numPulses; i++) {
    pulses[i].draw(); 
  }
}

void mousePressed() {
  addPulse(mouseX, mouseY); 
}

void mouseDragged() {
  addPulse(mouseX, mouseY); 
}

void keyPressed() {
  if (key == 32) {  // space bar
    // clear all
    numPulses = 0;
  } 
}

// ----------------------------------------------------------------------
// USER FUNCTIONS
// ----------------------------------------------------------------------
/* adds a new pulse to the list */
void addPulse(int newX, int newY) {
  if (numPulses < MAX_PULSES) {
    pulses[numPulses] = new Pulse(newX, newY);
    numPulses++;
  }
}