From e24b1be95d843e5f8f730cf02eeac37145d0a288 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Thu, 25 May 2017 00:09:10 +0100
Subject: [PATCH] sewing-table: Machine_RearProfile

---
 sewing-table.scad.m4 | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index 43a0b3b..03adc7f 100644
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -388,15 +388,32 @@ module Machine_Arm(){
 module Machine_Profile(){
   first_rear = machine_rear_profile[0];
   first_front = machine_front_profile[len(machine_front_profile)-1];
-  below_point = 0.5 * ( first_rear + first_front ) + [ 0, -40 ];
+  below_point = 0.5 * ( first_rear + first_front ) + [ 0, -10 ];
   pol = concat( machine_rear_profile,
 		[ below_point ],
 		machine_front_profile);
   skew_angle = atan2( first_front[1] - first_rear[1],
 		      first_front[0] - first_rear[0] );
   echo(below_point, pol, skew_angle);
-  rotate([0,0, -skew_angle ]){
-    polygon(pol);
+  hull(){
+    for (z=[0,-40]) {
+      translate([0,z]) {
+	//scale([1,5])
+	rotate([0,0, -skew_angle ]){
+	  //translate( - first_front )
+	  polygon(pol);
+	}
+      }
+    }
+  }
+}
+
+module Machine_RearProfile(){
+  intersection(){
+    Machine_Profile();
+    translate([ -200 + machine_rear_to_front/2, -100 ]) {
+      square([200,200]);
+    }
   }
 }
 
@@ -614,4 +631,5 @@ module Demo(){ ////toplevel
 //TestPiece2();
 //Demo();
 
-Machine_Profile();
+//Machine_Profile();
+Machine_RearProfile();
-- 
2.30.2