From cb071c4f2020b7733f5dd87fa75a7f2e447c5444 Mon Sep 17 00:00:00 2001
From: Camil Staps
Date: Wed, 29 Apr 2015 10:29:04 +0200
Subject: This seems to work

---
 .../mandelbrot/MandelbrotController.java           | 41 ++++++++++++++--------
 1 file changed, 26 insertions(+), 15 deletions(-)

(limited to 'Week11 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotController.java')

diff --git a/Week11 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotController.java b/Week11 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotController.java
index 930d589..f072805 100644
--- a/Week11 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotController.java	
+++ b/Week11 Mandelbrot/src/com/camilstaps/mandelbrot/MandelbrotController.java	
@@ -20,28 +20,39 @@ public class MandelbrotController {
         this.grid = grid;
     }
     
-    public void redraw() {
+    public double getX(int x_on_screen) {
         double centerX = mandelbrotProvider.getCenterX();
+        double scale = mandelbrotProvider.getScale();
+        int grid_w = grid.getWidth();
+        double  min_x = centerX - grid_w / scale / 2,
+                max_x = centerX + grid_w / scale / 2;
+        
+        return min_x + (((float) x_on_screen) / grid_w) * (max_x - min_x);
+    }
+    
+    public double getY(int y_on_screen) {
         double centerY = mandelbrotProvider.getCenterY();
         double scale = mandelbrotProvider.getScale();
+        int grid_h = grid.getHeight();
+        double  min_y = centerY - grid_h / scale / 2,
+                max_y = centerY + grid_h / scale / 2;
+        
+        return min_y + (((float) y_on_screen) / grid_h) * (max_y - min_y);
+    }
+    
+    public void redraw() {
         int repetitions = mandelbrotProvider.getRepetitions();
         
         int grid_w = grid.getWidth(), grid_h = grid.getHeight();
         
-        double min_x = centerX - grid_w / scale / 2,
-                max_x = centerX + grid_w / scale / 2,
-                min_y = centerY - grid_h / scale / 2,
-                max_y = centerX + grid_h / scale / 2;
-        
-        for (float i = 0; i < grid_w; i++) {
-            for (float j = 0; j < grid_h; j++) {
-                int grayscale = Mandelbrot.mandelNumber(
-                        min_x + (i / grid_w) * (max_x - min_x), 
-                        min_y + (j / grid_h) * (max_y - min_y),
-                        repetitions
-                ) * 255 / repetitions;
-                int[] color = {grayscale, grayscale, grayscale};
-                grid.setPixel((int) i, (int) j, color);
+        for (int i = 0; i < grid_w; i++) {
+            for (int j = 0; j < grid_h; j++) {
+                double mandel = ((double) Mandelbrot.mandelNumber(getX(i), getY(j), repetitions) * Math.PI) / repetitions;
+                int[] color = {
+                    (int) (255 * Math.sin(mandel)), 
+                    (int) (255 * Math.sin(mandel + Math.PI / 3)), 
+                    (int) (255 * Math.sin(mandel + 2 * Math.PI / 3))};
+                grid.setPixel(i, j, color);
             }               
         }
     }
-- 
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