From 3847a0b6d46b33a50573f17eea95e6f1d9dc6ab7 Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Thu, 5 Mar 2020 08:45:39 +0800
Subject: [PATCH] refactor

---
 examples/maze/random_scala.scad | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/examples/maze/random_scala.scad b/examples/maze/random_scala.scad
index 4a347d3f..fef7fb9a 100644
--- a/examples/maze/random_scala.scad
+++ b/examples/maze/random_scala.scad
@@ -2,14 +2,15 @@ use <experimental/mz_hamiltonian.scad>;
 
 module random_scala(start, rows, columns, width, height) {
     line = mz_hamiltonian(start, rows, columns);
+    leng = len(line);
     
-    for(i = [0:len(line) - 1]) {
+    for(i = [0:leng - 1]) {
         p1 = line[i];
         translate(p1)
         linear_extrude(height * i * 2 + height)
             square(width + 0.01, center = true);
             
-        p2 = line[(i + 1) % len(line)];
+        p2 = line[(i + 1) % leng];
         
         translate(p1 + (p2 - p1) / 2)        
         linear_extrude(height * (2 * i + 1) + height)