more example moving

java/examples/Books/Processing Handbook/Extensions/Electronics/Ex_03B/Ex_03B.pde

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+// Check if the mouse is over a rectangle and writes the status to the serial port
+import processing.serial.*;
+
+Serial port; // Create object from Serial class
+
+void setup() {
+  size(200, 200);
+  noStroke();
+  frameRate(10);
+// Open the port that the board is connected to and use the same speed (9600 bps)
+  port = new Serial(this, 9600);
+}
+
+void draw() {
+  background(255);
+  if (mouseOverRect() == true) { // If mouse is over square,
+    fill(204); // change color and
+    port.write('H'); // send an H to indicate mouse is over square
+  } else { // If mouse is not over square,
+    fill(0); // change color and
+    port.write('L'); // send an L otherwise
+  }
+  rect(50, 50, 100, 100); // Draw a square
+}
+
+boolean mouseOverRect() { // Test if mouse is over square
+  return ((mouseX >= 50) && (mouseX <= 150) && (mouseY >= 50) && (mouseY <= 150));
+}