From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 8 Oct 2017 01:34:50 +0000 (+0100)
Subject: poster-tube-lid: BayonetCutout rework to RotateProjectSlice
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=commitdiff_plain;h=40c4ef435ac5dce7ebade670a2aa676588e5bd6d

poster-tube-lid: BayonetCutout rework to RotateProjectSlice

slight functional change only (minor overlap adjustment)
---

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index c4847c9..47e6a84 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -112,31 +112,38 @@ module MainProfile(){
 	   ]);
 }
 
-module BayonetCutoutSlice(offset){
-  rotate([0,0, atan2(offset, main_dia/2 + side_thick) ]){
+module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
+  // nom_rad > real_rad
+  rotate([0,0, atan2(offset, nom_rad) ]){
     intersection(){
       translate([-offset, -10, 0])
 	rotate([90,0,0])
-	linear_extrude(height= main_dia*2)
+	linear_extrude(height= nom_rad*2)
 	polygon(bayo_polygon);
       translate([0,0, -25])
-	cylinder(h=50, r= main_dia/2 + rivet_tall);
+	cylinder(h=50, r= real_rad);
       translate([0,0, -25])
 	linear_extrude(height= 50)
 	polygon([ [ 0,0 ],
-		  [ -bayo_slice_size, -main_dia ],
-		  [ +bayo_slice_size, -main_dia ] ]);
+		  [ -slice_size, -real_rad*2 ],
+		  [ +slice_size, -real_rad*2 ] ]);
     }
   }
 }
 
-module BayonetCutout(){
-  offs = [ for (i=[ bayo_c[0] :
-		    bayo_slice_size :
-		    bayo_i[0] + bayo_slice_size ]) i ];
+module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){
+  offs = [ for (i=[ x_min :
+		    slice_size :
+		    x_max + slice_size ]) i ];
   echo (offs);
   for (off=offs)
-    BayonetCutoutSlice(off);
+    RotateProjectSlice(off, slice_size, nom_rad, real_rad);
+}
+
+module BayonetCutout(){
+  RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
+		main_dia/2 + side_thick, 
+		main_dia/2 + rivet_tall);
 }
 
 module ProfilesDemo(){