Version with four swingworkers

1 files changed, 4 insertions, 4 deletions

diff --git a/Week15 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotFractal.java b/Week15 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotFractal.java
index 1c608fd..43909fe 100644
--- a/Week15 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotFractal.java
+++ b/Week15 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotFractal.java
@@ -39,12 +39,12 @@ public class MandelbrotFractal {
      */
     private static final Map<Point,Result> mandelNumbers = new HashMap<>();
     
-    public static int mandelNumber(double x, double y, int repetitions) {
+    public synchronized static int mandelNumber(double x, double y, int repetitions) {
         Point p = new Point(x, y);
         return mandelNumber(p, repetitions);
     }
     
-    public static int mandelNumber(Point p, int repetitions) {
+    public synchronized static int mandelNumber(Point p, int repetitions) {
         if (mandelNumbers.containsKey(p)) {
             Result result = mandelNumbers.get(p);
             if (repetitions < result.repetitions ||
@@ -61,7 +61,7 @@ public class MandelbrotFractal {
         }
     }
     
-    protected static Result calculateMandelNumber(Point p, int repetitions) {
+    protected synchronized static Result calculateMandelNumber(Point p, int repetitions) {
         Result start = new Result();
         start.x = p.x;
         start.y = p.y;
@@ -69,7 +69,7 @@ public class MandelbrotFractal {
         return start;
     }
     
-    protected static void calculateMandelNumber(Point p, int repetitions, Result start) {
+    protected synchronized static void calculateMandelNumber(Point p, int repetitions, Result start) {
         int n = start.repetitions;
         
         while (start.x * start.x + start.y * start.y <= 4 && n < repetitions) {