From 264fa55dcf2d72d8ddf0bb6fd96be29e4e57d666 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Sat, 25 Oct 2014 09:53:41 -0400
Subject: start refactoring this into a class

---
 examples/mandelbrot.jl |  7 +++----
 src/mandelbrot.jl      | 15 +++++++++++++--
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/examples/mandelbrot.jl b/examples/mandelbrot.jl
index 417291d..ab618d4 100644
--- a/examples/mandelbrot.jl
+++ b/examples/mandelbrot.jl
@@ -8,14 +8,13 @@ iterations = 45
 imgsize = 500
 
 img = [ Color.HSV(0, 0, 0) for x=1:imgsize, y=1:imgsize ]
-c = Fractal.complexplane(4.0, imgsize)
-z = c
+m = Fractal.Mandelbrot(imgsize)
 
 imgc, imgslice = view(img)
 
 for i = 1:iterations
-  z = Fractal.mandelbrot(z, c)
-  img[abs(z) .> 2] = Color.HSV(i * 360/iterations, 1, 1)
+  Fractal.step(m)
+  img[abs(m.z) .> 2] = Color.HSV(i * 360/iterations, 1, 1)
   view(imgc, img)
 end
 
diff --git a/src/mandelbrot.jl b/src/mandelbrot.jl
index 614d490..bde0a74 100644
--- a/src/mandelbrot.jl
+++ b/src/mandelbrot.jl
@@ -1,3 +1,14 @@
-function mandelbrot(z, c)
-    z.^2 + c
+type Mandelbrot
+    c::Array{Complex{Float64}, 2}
+    z::Array{Complex{Float64}, 2}
+
+    Mandelbrot(imgsize) = (
+        line = linspace(-2.0, 2.0, imgsize);
+        plane = [ x + y*im for x=line, y=line ];
+        new(plane, plane)
+    )
+end
+
+function step(m::Mandelbrot)
+    m.z = m.z.^2 + m.c
 end
-- 
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