From 2a052a0eb5322500276a4efdaef85d3c5ab95e9d Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Tue, 30 Oct 2018 17:26:58 +0000
Subject: [PATCH] ksafe-base: wip, $xpp

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 ksafe-base.scad | 54 ++++++++++++++++++++++++++-----------------------
 1 file changed, 29 insertions(+), 25 deletions(-)

diff --git a/ksafe-base.scad b/ksafe-base.scad
index b21b693..24805a7 100644
--- a/ksafe-base.scad
+++ b/ksafe-base.scad
@@ -26,46 +26,50 @@ appM = gppL + anchor_b * [1,1];
 
 a_bevel = 2 * anchor_b * (1 + sqrt(0.5));
 
-module upp_app_Profile(t_bevel){
-  xppE = gppL + t_bevel * [0,1];
-  xppF = gppL + t_bevel * [1,0];
+module upp_app_Vars(t_bevel){
+  $xppE = gppL + t_bevel * [0,1];
+  $xppF = gppL + t_bevel * [1,0];
 
-  xppJ = xppE + wall_thick * [ 1, tan(22.5) ];
-  xppI = xppF + base_thick + [ tan(22.5), 1 ];
+  $xppJ = $xppE + wall_thick * [ 1, tan(22.5) ];
+  $xppI = $xppF + base_thick + [ tan(22.5), 1 ];
 
+  children();
+}
+
+module upp_app_Profile(){
   polygon([ gppA,
 	    gppB,
-	    xppE,
-	    xppF,
-	    xppF + [1,0],
-	    xppI + [1,0],
-	    xppJ ]);
+	    $xppE,
+	    $xppF,
+	    $xppF + [1,0],
+	    $xppI + [1,0],
+	    $xppJ ]);
 }
 
 
 module UsualProfile(){
-  upp_app_Profile(bevel);
+  upp_app_Vars(bevel) upp_app_Profile();
 }
 
 module NearAnchorProfile(){
-  upp_app_Profile(a_bevel);
+  upp_app_Vars(a_bevel) upp_app_Profile();
 }
 
 module AnchorProfile(){
-  xppE = gppL + t_bevel * [0,1];
-  xppF = gppL + t_bevel * [1,0];
-
-  upp_app_Profile(a_bevel);
-
-  difference(){
-    hull(){
-      polygon([ xppE,
-		xppF,
-		xppF + [0,1],
-		xppE + [1,0] ]);
-      translate(appM) circle(r= anchor_b);
+  upp_app_Vars(a_bevel) {
+
+    upp_app_Profile();
+
+    difference(){
+      hull(){
+	polygon([ $xppE,
+		  $xppF,
+		  $xppF + [0,1],
+		  $xppE + [1,0] ]);
+	translate(appM) circle(r= anchor_b);
+      }
+      translate(appM) circle(r= anchor_rad);
     }
-    translate(appM) circle(r= anchor_rad);
   }
 }
 
-- 
2.30.2