From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Fri, 5 Jun 2020 22:42:43 +0000 (+0100)
Subject: bike-phone-mount: wip
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=454469a952974d29e30e74f901db71923d819e71;p=reprap-play.git

bike-phone-mount: wip

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/bike-phone-mount.scad b/bike-phone-mount.scad
index 573cba3..296fd51 100644
--- a/bike-phone-mount.scad
+++ b/bike-phone-mount.scad
@@ -12,6 +12,8 @@ neck_length = 1.5 + 0.50;
 
 slope = 0.35;
 
+// calculated
+
 nep0 = [0,0];
 nep1 = nep0 + [0,1] * neck_length;
 nep7 = nep0 + [1,0] * lip_depth;
@@ -25,8 +27,7 @@ nepm = [ nep0[0], nep3[1] ];
 total_height = nep2[1] - nep6[1];
 nep_z_offset = -nep2[1];
 nep_side_offset = [ neck_width/2, nep_z_offset ];
-nep_rear_offset = [ neck_depth/2, nep_z_offset ];
-inner_pos = [-0.1, -total_height];
+nep_rear_offset = [ neck_depth, nep_z_offset ];
 
 module NeckEdgePlan() {
   polygon([ nep0,
@@ -40,11 +41,20 @@ module NeckEdgePlan() {
 }
 
 module Neck() {
-  for (m=[0,1]) {
-    mirror([m,0]) {
-      translate(nep_side_offset) NeckEdgePlan();
-      rectfromto(inner_pos,
-		 nep_side_offset + nepm);
+  intersection(){
+    linextr_y_xz(-100,100,convexity=10){
+      for (m=[0,1]) {
+	mirror([m,0]) {
+	  translate(nep_side_offset) NeckEdgePlan();
+	  rectfromto([-0.1, -total_height],
+		     nep_side_offset + nepm);
+	}
+      }
+    }
+    linextr_x_yz(-100,100,convexity=10){
+      translate(nep_rear_offset) NeckEdgePlan();
+      rectfromto([0, -total_height],
+		 nep_rear_offset + nepm);
     }
   }
 }