blue book examples

java/examples/Books/Processing Handbook/Illustrations/page_412/page_412.pde

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+
+// Based on code 44-01 (p. 414)
+
+
+void setup() {
+  size(400, 666);
+  smooth();
+}
+
+void draw() {
+  if(mouseX != 0 && mouseY != 0 && pmouseX !=0 && pmouseY != 0) {
+    float s = dist(mouseX, mouseY, pmouseX, pmouseY) + 1;
+    noStroke();
+    fill(0, 102);
+    ellipse(mouseX, mouseY, s, s);
+    stroke(255);
+    point(mouseX, mouseY);
+  }
+}
+
+void mousePressed() {
+  beginRecord(PDF, "page_412.pdf");
+  background(255); 
+}
+
+void mouseReleased() {
+  endRecord(); 
+  exit();
+}