Created package

src/com/albertoventurini/juliaset/JuliaSetPanel.java

@@ -0,0 +1,51 @@
+package com.albertoventurini.juliaset;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+
+public class JuliaSetPanel extends JPanel {
+    private static int maxIter = 1000;
+    private static double zoom = 1;
+    private double cY, cX;
+
+    private JuliaSetCalculator juliaSetCalculator;
+
+    public JuliaSetPanel(final JuliaSetCalculator juliaSetCalculator, final int width, final int height) {
+        this.juliaSetCalculator = juliaSetCalculator;
+        setPreferredSize(new Dimension(width, height));
+        setBackground(Color.white);
+    }
+
+    void drawJuliaSet(Graphics2D g) {
+        int width = getWidth();
+        int height = getHeight();
+        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+
+        cX = -0.7;
+        cY = 0.27015;
+        double moveX = 0, moveY = 0;
+
+        int[][] iterations = juliaSetCalculator.calculate(maxIter, zoom, cX, cY, moveX, moveY);
+
+        for(int x = 0; x < width; x++) {
+            for(int y = 0; y < height; y++) {
+                float i = iterations[x][y];
+                int color = Color.HSBtoRGB(((maxIter / i) + 0.5f) % 1, 1, i > 0 ? 1 : 0);
+                image.setRGB(x, y, color);
+            }
+        }
+
+        g.drawImage(image, 0, 0, null);
+    }
+
+    @Override
+    public void paintComponent(Graphics gg) {
+        super.paintComponent(gg);
+        Graphics2D g = (Graphics2D) gg;
+        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                RenderingHints.VALUE_ANTIALIAS_ON);
+        drawJuliaSet(g);
+    }
+
+}