add flipdot simulator

mqtt_flipdot_simulator/mqtt_flipdot_simulator.pde

@@ -0,0 +1,65 @@
+import mqtt.*;
+
+MQTTClient client;
+
+static int pixeldistance=16;
+static int pixelsize=14;
+static int displaywidth=75;
+static int displayheight=16;
+static float pixelcornerradius=3;
+static float pixelborderweight=1;
+
+color colorWhite=color(240,255,150);
+color colorBlack=color(50,50,50);
+
+String lastDataReceived=""; 
+
+PGraphics pg;
+
+void setup() {
+  size(1300,300);
+  pg = createGraphics(int(displaywidth*pixeldistance+pixelborderweight/2),int(displayheight*pixeldistance+pixelborderweight/2));
+  background(127);
+  client = new MQTTClient(this);
+  client.connect("mqtt://192.168.1.6", "processing-flipdot");
+}
+
+void draw() {
+  pg.beginDraw();
+  pg.clear();
+  for (int y=0;y<displayheight;y++){
+    for (int x=0;x<displaywidth;x++){
+      pg.strokeWeight(pixelborderweight);
+      if (int(random(3))==0) {
+        pg.stroke(0,0,0);
+        pg.fill(colorWhite);
+      }else{
+        pg.stroke(0,0,0);
+        pg.fill(colorBlack);
+      }
+      pg.rect(x*pixeldistance+(pixeldistance-pixelsize)/2,y*pixeldistance+(pixeldistance-pixelsize)/2, pixelsize,pixelsize, pixelcornerradius) ;
+    }
+  }
+  pg.endDraw();
+  image(pg,5,5);
+}
+
+boolean getPixelFromString(int x,int y){
+  return lastDataReceived.charAt(x*displayheight+y)=='1';
+}
+
+void clientConnected() {
+  println("client connected");
+
+  client.subscribe("testflipdot/display/data/set");
+}
+
+void messageReceived(String topic, byte[] payload) {
+  //println("new message: " + topic + " - " + new String(payload));
+  println("new message: " + topic + " len= " + (new String(payload)).length());
+  lastDataReceived=new String(payload);
+}
+
+void connectionLost() {
+  println("connection lost");
+}