Revert "sewing-table: FOR REVERT: shorten tongue/groove for round edge"

[reprap-play.git] / sewing-table.scad.m4

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index 856035894f66a8a4878ad097b2880f87026fb19e..5a6aec036ea8e4c6841387de5f815e4e600e37e6 100644 (file)
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -19,8 +19,9 @@ screw_big_len = 4.0;
 round_edge_rad = 2.0;
 
 interlock_dia = 10;
-interlock_fine = 1.0;
+interlock_fine = 0.66;
 
+interlock_fine_slope = 1.0;
 interlock_fine_lenslop = 1.0;
 
 demo_slop = 0.1;
@@ -49,6 +50,8 @@ thehd_br = -thehd_tl;
 interlock_rad = interlock_dia/2;
 interlock_negative_rad = interlock_rad + 0.125;
 
+interlock_sq_adj = 0.2; // arbitrary
+
 module Post(){
   mirror([0,0,1]) {
     difference(){
@@ -147,9 +150,7 @@ module InterlockLobePlan(negative) {
   }
 }
 
-module InterlockEdgePlan(negative, nlobes, length) {
-  iadj = 0.1;
-
+module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
   for (lobei = [ 0 : nlobes-1 ]) {
     lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
     translate([lobex, 0, 0]) {
@@ -157,22 +158,46 @@ module InterlockEdgePlan(negative, nlobes, length) {
     }
   }
 
-  slotshorter = negative ? 0 : interlock_fine_lenslop;
-  mirror([0, negative])
-    translate([slotshorter, iadj])
-    square([length - slotshorter*2, interlock_fine + iadj*2]);
+  if (dosquare) {
+    iadj = 0;
+    slotshorter = negative ? 0 : interlock_fine_lenslop;
+    mirror([0, negative])
+      translate([slotshorter, iadj])
+      square([length - slotshorter*2, interlock_fine + iadj*2]);
+  }
 }
 
 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
   plusth = negative * 1.0;
+  protr = interlock_fine + interlock_sq_adj;
+
+  z2 = -tile_th/2;
+  z1 = -tile_th/2 - protr / interlock_fine_slope;
+  z3 = -tile_th/2 + protr / interlock_fine_slope;
+
+  negsign = negative ? -1 : +1;
+  yprotr = negsign * protr;
 
   INREFFRAME(left_cnr, right_cnr) {
-    translate([0, 0, plusth]){
-      mirror([0,0,1]){
-       linear_extrude(height=tile_th+plusth*2, convexity=10){
-         InterlockEdgePlan(negative, nlobes, length);
-       }
-      }
+    for (vsect = [ // zs0            zs1      ys0,            ys1
+                 [ -tile_th-plusth, plusth,  0,              0],
+                 [ z1,              z2,      0, yprotr],
+                 [ z2,              z3,      yprotr, 0],
+                 ]) {
+      zs0 = vsect[0];
+      zs1 = vsect[1];
+      zsd = zs1-zs0;
+      ys0 = vsect[2];
+      ys1 = vsect[3];
+      ysd = ys1-ys0;
+      sl = ysd/zsd;
+      m = [ [ 1,0,   0,    0 ],
+           [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
+           [ 0,0,   1,  zs0 ],
+           [ 0,0,   0,    1 ] ];
+      multmatrix(m)
+       linear_extrude(height=zsd, convexity=10)
+       InterlockEdgePlan(negative, nlobes, length, !!ysd);
     }
   }
 }
@@ -236,6 +261,7 @@ module Tile02(){ ////toplevel
   posts = Rectangle_corners2posts(c);
   difference(){
     TileBase(c[0], c[2]);
+    InterlockEdge(c[1], c[2], 1);
   }
   Posts(posts);
   RoundEdge(c[0], c[1]);