From aca9d5b76269c4829e2390d1d6fb2c84268f869c Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Wed, 3 May 2017 08:33:04 +0800
Subject: [PATCH] path_pts accepts [[x, y], ..] format

---
 src/path_extrude.scad | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/path_extrude.scad b/src/path_extrude.scad
index 57eff770..846b1f6f 100644
--- a/src/path_extrude.scad
+++ b/src/path_extrude.scad
@@ -15,9 +15,10 @@
 
 module path_extrude(shape_pts, path_pts, triangles = "RADIAL", twist = 0, scale = 1.0) {
     
-    s_pts = len(shape_pts[0]) == 3 ? shape_pts : [for(p = shape_pts) [p[0], p[1], 0]];
+    s_pts = to3d(shape_pts);
+    pth_pts = to3d(path_pts);
 
-    len_path_pts = len(path_pts);    
+    len_path_pts = len(pth_pts);    
     len_path_pts_minus_one = len_path_pts - 1;     
 
     scale_step_vt = len(scale) == 2 ? 
@@ -33,8 +34,8 @@ module path_extrude(shape_pts, path_pts, triangles = "RADIAL", twist = 0, scale
 
     function first_section() = 
         let(
-            p1 = path_pts[0],
-            p2 = path_pts[1],
+            p1 = pth_pts[0],
+            p2 = pth_pts[1],
             dx = p2[0] - p1[0],
             dy = p2[1] - p1[1],
             dz = p2[2] - p1[2],
@@ -67,11 +68,11 @@ module path_extrude(shape_pts, path_pts, triangles = "RADIAL", twist = 0, scale
     function path_extrude_inner(index) =
        index == len_path_pts ? [] :
            concat(
-               [section(path_pts[index - 1], path_pts[index],  index)],
+               [section(pth_pts[index - 1], pth_pts[index],  index)],
                path_extrude_inner(index + 1)
            );
 
-    if(path_pts[0] == path_pts[len_path_pts_minus_one]) {
+    if(pth_pts[0] == pth_pts[len_path_pts_minus_one]) {
    
     } else {
         polysections(