From 6013a909e18b3ac3a90d9000be603bd1641fa5df Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 9 Sep 2017 17:38:18 +0100
Subject: [PATCH] shelf-label-holder: working on Elevation

---
 shelf-label-holder.scad | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/shelf-label-holder.scad b/shelf-label-holder.scad
index cdc91a2..2912db7 100644
--- a/shelf-label-holder.scad
+++ b/shelf-label-holder.scad
@@ -5,6 +5,14 @@ prong_curverad = 30;
 prong_thick = 1.0;
 prong_maxdepth = 18;
 
+nom_shelf = 14.54;
+
+interference = 0.5;
+
+// calculated
+
+interference_angle = atan2(interference, prong_nomdepth);
+
 module ProngElevationUnrotated(){
   intersection(){
     union(){
@@ -18,4 +26,14 @@ module ProngElevationUnrotated(){
   }
 }
 
-ProngElevationUnrotated();
+module Elevation(){
+  rotate(-interference_angle)
+    ProngElevationUnrotated();
+  translate([0, -nom_shelf])
+    mirror([0,1])
+    rotate(-interference_angle)
+    ProngElevationUnrotated();
+}
+
+//ProngElevationUnrotated();
+Elevation();
-- 
2.30.2