sewing-table: Introduce InterlockEdge

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

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index 9b114137eced6173d0cf394df8dfb298f6f24eee..38638ac0f5f15bd0b2786a9f6d9601e396c19abb 100644 (file)
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -66,8 +66,7 @@ module Posts(posts) {
 module TileBase(botleft, topright){
   size = topright - botleft;
   botleft_post = botleft + thehd_tr;
-  topright_post = topright - thehd_bl;
-  echo(botleft_post, topright_post);
+  topright_post = topright + thehd_bl;
   difference(){
     mirror([0,0,1])
       translate(concat(botleft, [0]))
@@ -75,8 +74,8 @@ module TileBase(botleft, topright){
     translate( concat(botleft_post, [-tile_th])
               + 0.5 * [ post_dia, post_dia, 0 ] )
       Commitid_BestCount_M( topright_post-botleft_post
-                           + [0, thehd[1] ]
-                           + [-post_dia,-post_dia] );
+                           + [-post_dia,-post_dia]
+                           + [0, thehd[1]]);
   }
 }
 
@@ -122,7 +121,7 @@ module RoundLeftCorner(this_cnr, right_cnr) {
   }
 }
 
-module InterlockPlan(r, ymir) {
+module InterlockLobePlan(r, ymir) {
   dx = sqrt(3) * r;
   $fn= 80;
   translate([thehd[0], 0]){
@@ -140,31 +139,39 @@ module InterlockPlan(r, ymir) {
   }
 }
 
-module InterlockCore(r, plusth, ymir) {
+module InterlockLobeCore(negative=0) {
+  r = negative ? interlock_negative_rad : interlock_rad;
+  plusth = negative * 1.0;
+  ymir = negative ? 0 : 1;
   translate([0, 0, plusth]){
     mirror([0,0,1]){
       linear_extrude(height=tile_th+plusth*2, convexity=10){
-       InterlockPlan(r, ymir);
+       InterlockLobePlan(r, ymir);
       }
     }
   }
 }
 
-module InterlockNegative(this_cnr, right_cnr) {
+module InterlockLobe(this_cnr, right_cnr, negative=0) {
   INREFFRAME(this_cnr, right_cnr)
-    InterlockCore(interlock_negative_rad, 1, 0);
+    InterlockLobeCore(negative);
 }
 
-module Interlock(this_cnr, right_cnr) {
-  INREFFRAME(this_cnr, right_cnr)
-    InterlockCore(interlock_rad, 0, 1);
+module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
+  INREFFRAME(left_cnr, right_cnr) {
+    for (lobei = [ 0 : nlobes-1 ]) {
+      lobex = (length - thehd[0]*2) * lobei / (nlobes-1);
+      translate([lobex, 0, 0])
+       InterlockLobeCore(negative);
+    }
+  }
 }
 
 function TestPiece_holes2corners(holes) =
   [ holes[0] + thehd_bl,
     holes[1] + thehd_br,
-    holes[0] + thehd_tl,
-    holes[1] + thehd_tr ];
+    holes[1] + thehd_tr,
+    holes[0] + thehd_tl ];
 
 module TestPiece1(){ ////toplevel
   holes = [ [-100, 0],
@@ -172,12 +179,12 @@ module TestPiece1(){ ////toplevel
            ];
   corners = TestPiece_holes2corners(holes);
   difference(){
-    TileBase(corners[0], corners[3]);
-    InterlockNegative(corners[1], corners[3]);
+    TileBase(corners[0], corners[2]);
+    InterlockLobe(corners[1], corners[2], 1);
   }
   Posts(holes);
   RoundEdge(corners[0], corners[1]);
-  RoundEdge(corners[2], corners[0]);
+  RoundEdge(corners[3], corners[0]);
   RoundLeftCorner(corners[0], corners[1]);
 }
 
@@ -186,13 +193,13 @@ module TestPiece2(){ ////toplevel
            [  50, 0]
            ];
   corners = TestPiece_holes2corners(holes);
-  TileBase(corners[0], corners[3]);
+  TileBase(corners[0], corners[2]);
   Posts(holes);
   RoundEdge(corners[0], corners[1]);
-  Interlock(corners[2], corners[0]);
+  InterlockLobe(corners[3], corners[0]);
 }
 
-module Demo(){ ////toplevel
+module TestDemo(){ ////toplevel
   translate([ -thehd[0], 0 ])
     color("blue")
     TestPiece1();
@@ -200,6 +207,52 @@ module Demo(){ ////toplevel
     TestPiece2();
 }
   
+function Rectangle_corners(c0, sz) =
+  [ c0 + [ 0,     0     ],
+    c0 + [ sz[0], 0     ],
+    c0 + [ sz[0], sz[1] ],
+    c0 + [ 0,     sz[1] ] ];
+
+function Rectangle_corners2posts(c) =
+  [ c[0] + thehd_tr,
+    c[1] + thehd_tl,
+    c[2] + thehd_bl,
+    c[3] + thehd_br ];
+
+module Tile02(){ ////toplevel
+  sz = [100,170];
+  c0 = -sz;
+  c = Rectangle_corners(c0, sz);
+  posts = Rectangle_corners2posts(c);
+  difference(){
+    TileBase(c[0], c[2]);
+  }
+  Posts(posts);
+  RoundEdge(c[0], c[1]);
+  RoundEdge(c[3], c[0]);
+  RoundLeftCorner(c[0], c[1]);
+  InterlockEdge(c[2], c[3], 0, 2);
+}
+
+module Tile12(){ ////toplevel
+  sz = [100,250];
+  c0 = [-sz[0], 0];
+  c = Rectangle_corners(c0, sz);
+  posts = Rectangle_corners2posts(c);
+  difference(){
+    TileBase(c[0], c[2]);
+  }
+  Posts(posts);
+  RoundEdge(c[2], c[3]);
+  RoundEdge(c[3], c[0]);
+  RoundLeftCorner(c[2], c[3]);
+}
+
+module Demo(){ ////toplevel
+  color("blue") Tile12();
+  color("red")  Tile02();
+}
+  
 //TestPiece1();
 //TestPiece2();
 //Demo();