java/examples/Basics/Structure/Functions/applet/Functions.java

@@ -0,0 +1,53 @@
+import processing.core.*; 
+
+import java.applet.*; 
+import java.awt.*; 
+import java.awt.image.*; 
+import java.awt.event.*; 
+import java.io.*; 
+import java.net.*; 
+import java.text.*; 
+import java.util.*; 
+import java.util.zip.*; 
+import java.util.regex.*; 
+
+public class Functions extends PApplet {
+
+/**
+ * Functions. 
+ * 
+ * The drawTarget() function makes it easy to draw many distinct targets. 
+ * Each call to drawTarget() specifies the position, size, and number of 
+ * rings for each target. 
+ */
+
+public void setup() 
+{
+  size(200, 200);
+  background(51);
+  noStroke();
+  smooth();
+  noLoop();
+}
+
+public void draw() 
+{
+  drawTarget(68, 34, 200, 10);
+  drawTarget(152, 16, 100, 3);
+  drawTarget(100, 144, 80, 5);
+}
+
+public void drawTarget(int xloc, int yloc, int size, int num) 
+{
+  float grayvalues = 255/num;
+  float steps = size/num;
+  for(int i=0; i<num; i++) {
+    fill(i*grayvalues);
+    ellipse(xloc, yloc, size-i*steps, size-i*steps);
+  }
+}
+
+  static public void main(String args[]) {
+    PApplet.main(new String[] { "Functions" });
+  }
+}