java/examples/Basics/Math/Modulo/applet/Modulo.java

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+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 Modulo extends PApplet {
+
+/**
+ * Modulo. 
+ * 
+ * The modulo operator (%) returns the remainder of a number 
+ * divided by another. As in this example, it is often used 
+ * to keep numerical values within a set range. 
+ */
+ 
+int num = 20;
+float c;
+
+public void setup()
+{
+  size(200,200);
+  fill(255);
+  frameRate(30);
+}
+
+public void draw() 
+{ 
+  background(0);
+  c+=0.1f;
+  for(int i=1; i<height/num; i++) { 
+    float x = (c%i)*i*i;
+    stroke(102);
+    line(0, i*num, x, i*num);
+    noStroke();
+    rect(x, i*num-num/2, 8, num);
+  } 
+} 
+
+
+  static public void main(String args[]) {
+    PApplet.main(new String[] { "Modulo" });
+  }
+}