From 02211c20348ef4f134c0d3c734a5d922fe9a9a3c Mon Sep 17 00:00:00 2001
From: Chris Palmer <nop.head@gmail.com>
Date: Thu, 13 Aug 2020 11:56:53 +0100
Subject: [PATCH] Added tubing_or() and center option.

---
 readme.md            | 7 ++++++-
 vitamins/tubing.scad | 6 ++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/readme.md b/readme.md
index 0a97c83..395f798 100644
--- a/readme.md
+++ b/readme.md
@@ -3586,10 +3586,15 @@ Tubing and sleeving. The internal diameter can be forced to stretch it over some
 | ```tubing_material(type)``` | Material description |
 | ```tubing_od(type)``` | Outside diameter |
 
+### Functions
+| Function | Description |
+|:--- |:--- |
+| ```tubing_or(type)``` | Outside radius |
+
 ### Modules
 | Module | Description |
 |:--- |:--- |
-| ```tubing(type, length = 15, forced_id = 0)``` | Draw specified tubing with optional forced internal diameter |
+| ```tubing(type, length = 15, forced_id = 0, center = true)``` | Draw specified tubing with optional forced internal diameter |
 
 ![tubings](tests/png/tubings.png)
 
diff --git a/vitamins/tubing.scad b/vitamins/tubing.scad
index 864a876..8088946 100644
--- a/vitamins/tubing.scad
+++ b/vitamins/tubing.scad
@@ -27,7 +27,9 @@ function tubing_od(type)       = type[2]; //! Outside diameter
 function tubing_id(type)       = type[3]; //! Inside diameter
 function tubing_colour(type)   = type[4]; //! Colour
 
-module tubing(type, length = 15, forced_id = 0) { //! Draw specified tubing with optional forced internal diameter
+function tubing_or(type)        = tubing_od(type) / 2; //! Outside radius
+
+module tubing(type, length = 15, forced_id = 0, center = true) { //! Draw specified tubing with optional forced internal diameter
     original_od = tubing_od(type);
     original_id = tubing_id(type);
     id = forced_id ? forced_id : original_id;
@@ -37,7 +39,7 @@ module tubing(type, length = 15, forced_id = 0) { //! Draw specified tubing with
     else
         vitamin(str("tubing(", type[0], arg(length, 15), "): ", tubing_material(type), " OD ", original_od, "mm ID ", original_id,"mm x ",length, "mm"));
     color(tubing_colour(type))
-        linear_extrude(length, center = true, convexity = 4)
+        linear_extrude(length, center = center, convexity = 4)
             difference() {
                 circle(d = od);
                 circle(d = id);