From 05fb449f931e1e3573b356463cbe7b46ae2ed193 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 8 Feb 2020 21:27:20 +0000
Subject: [PATCH] fairphone-battery-case: wip

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 fairphone-battery-case.scad | 62 +++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 fairphone-battery-case.scad

diff --git a/fairphone-battery-case.scad b/fairphone-battery-case.scad
new file mode 100644
index 0000000..fcc9eb0
--- /dev/null
+++ b/fairphone-battery-case.scad
@@ -0,0 +1,62 @@
+// -*- C -*-
+
+mainwall_th = 2.5;
+smallwall_th = 1.5;
+
+seal_th = 0.3 + 0.6; // total gap for seal etc.
+behind_recess = 1.0;
+
+recess_gap_end = 0.2;
+
+lid_edge_th = 0.5;
+
+battery_len = 66.55 + 0.75;
+battery_th = 6.55 + 0.75;
+battery_wdth = 44.38 + 0.75;
+
+// calculated
+
+bpp0 = [0,0];
+bpp1 = bpp0 + [ 0, mainwall_th - behind_recess ];
+lppA = bpp1 + [ seal_th, -recess_gap_end ];
+lppB = lppA + [ lid_edge_th, 0 ];
+bpp2 = [ lppB[0], bpp1[0] ];
+bpp3 = [ bpp2 + [ bpp1[1] - bpp0[1] ], bpp[0] ];
+lppC = bpp3 + [ 0, -recess_gap_end ];
+
+bpp8 = bpp0 + [ -battery_len,0 ];
+bpp5 = [ bpp8[0] - smallwall_th, bpp4[0] ];
+bpp9 = [ bpp0[0], bpp[1] - battery_wdth/2 - 1.0 ];
+bpp7 = [ bpp8[0], bpp9[1] ];
+bpp6 = [ bpp5[0], bpp9[1] ];
+lppE = [ lppA[0], bpp9[1] ];
+lppD = [ lppC[0], bpp9[1] ];
+
+module BaseHalfPlan(){
+  polygon([ bpp0,
+	    bpp1,
+	    bpp2,
+	    bpp3,
+	    bpp4,
+	    bpp5,
+	    bpp6,
+	    bpp7,
+	    bpp8
+	    ]);
+}
+
+module LidHalfPlan(){
+  polygon([ lppA,
+	    lppE,
+	    lppD,
+	    lppC,
+	    lppB
+	    ]);
+}
+
+module PlanDemo(){
+  color("blue") BaseHalfPlan();
+  color("red") LidHalfPlan();
+}
+
+PlanDemo();
-- 
2.30.2