final int maxVertices = 2<<8;
float x[] = new float[maxVertices];
float y[] = new float[maxVertices];
int numVertices = 0;

boolean pmousePressed = false;

void setup(){
  size(640,480);

}

void draw(){
  background(0);
  stroke(255);

  
  if (mousePressed && !pmousePressed && numVertices < maxVertices){
    x[numVertices] = mouseX; y[numVertices] = mouseY;
    numVertices++;
  }
  
  if (keyPressed && key == 'r'){
    x = new float[maxVertices];
    y = new float[maxVertices];
    numVertices = 0;
  }
  
  Triangle[] triangulated = triangulatePolygon(x,y,numVertices);

  Polygon[] polys = polygonizeTriangles(triangulated);
  if (triangulated != null){
    for (int i=0; i<polys.length; i++){
      if (polys[i] != null) polys[i].draw();
    }
  }
  stroke(255);
  for (int i=0; i<numVertices; i++){
    if (i<numVertices-1) line(x[i],y[i],x[i+1],y[i+1]);
    else line(x[i],y[i],x[0],y[0]);
//    if (isEar(i,x,y)) ellipse(x[i],y[i],4,4);
  }
  
  
  pmousePressed = mousePressed;
}