lsca.uni.py

@@ -12,7 +12,7 @@ def colorize(x):
     return x * 17 % 256
 
 
-def render(row):
+def render(row, scale):
     grays = colorize(row)
     if scale > 1:
         grays = np.repeat(grays, scale)
@@ -27,14 +27,13 @@ def limit(row):  # in-place
     return row
 
 
-def initialize():
+def initialize(width):
     row = np.zeros(width, int)
-    prev, here = 0, 0
+    value = 0
     for i in range(width):
-        if np.random.randint(0, 8) == 0:
+        if np.random.randint(8) == 0:  # only change values occasionally
-            here = np.random.randint(16)
+            value = np.random.randint(16)
-        row[i] = here
+        row[i] = value
-        prev = here
     limit(row)
     return row
 
@@ -63,7 +62,7 @@ print("P2")  # magic code for an ascii Portable GrayMap (PGM) file
 print(width * scale, height * scale)
 print(255)  # maximum color value
 
-row = initialize()
+row = initialize(width)
 
 for i in range(height):
     # left, center, right:
@@ -81,4 +80,4 @@ for i in range(height):
     row = diffusion + delta
 
     limit(row)
-    render(row)
+    render(row, scale)