Data commit

Task/Julia-set/Crystal/julia-set.crystal

@@ -0,0 +1,20 @@
+require "complex"
+
+def julia(c_real, c_imag)
+  puts Complex.new(c_real, c_imag)
+  -1.0.step(to: 1.0, by: 0.04) do |v|
+    puts -1.4.step(to: 1.4, by: 0.02).map{|h| judge(c_real, c_imag, h, v)}.join
+  end
+end
+
+def judge(c_real, c_imag, x, y)
+  50.times do
+    z_real = (x * x - y * y) + c_real
+    z_imag = x * y * 2 + c_imag
+    return " "  if z_real**2 > 10000
+    x, y = z_real, z_imag
+  end
+  "#"
+end
+
+julia(-0.8, 0.156)