sewing-table: InterlockEdgePlan: add dosquare parameter (nfc)

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

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index b09d59a53d0a615d63453e7c245081fb62c294a5..0603a0a0c335d6c2081d7ee8197b4a893bf03926 100644 (file)
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -150,7 +150,7 @@ module InterlockLobePlan(negative) {
   }
 }
 
-module InterlockEdgePlan(negative, nlobes, length) {
+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]) {
@@ -158,11 +158,13 @@ module InterlockEdgePlan(negative, nlobes, length) {
     }
   }
 
-  iadj = interlock_sq_adj;
-  slotshorter = negative ? 0 : interlock_fine_lenslop;
-  mirror([0, negative])
-    translate([slotshorter, iadj])
-    square([length - slotshorter*2, interlock_fine + iadj*2]);
+  if (dosquare) {
+    iadj = interlock_sq_adj;
+    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) {
@@ -173,22 +175,26 @@ module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
   z1 = -tile_th/2 - protr / interlock_fine_slope;
   z3 = -tile_th/2 + protr / interlock_fine_slope;
 
+  yprotr = negative ? -protr : protr;
+
   INREFFRAME(left_cnr, right_cnr) {
     for (vsect = [ // zs0            zs1      ys0,            ys1
                  [ -tile_th-plusth, plusth,  0,              0],
-                 [ z1,              z2,      0, protr],
-                 [ z2,              z3,      protr, 0],
+                 [ z1,              z2,      0, yprotr],
+                 [ z2,              z3,      yprotr, 0],
                  ]) {
       zs0 = vsect[0];
       zs1 = vsect[1];
       zsd = zs1-zs0;
       ys0 = vsect[2];
-      ys1 = vsect[2];
+      ys1 = vsect[3];
       ysd = ys1-ys0;
-      multmatrix([ [ 1,0,0,0 ],
-                  [ 0,1,0,0 ],
-                  [ 0,0,1,zs0 ],
-                  [ 0,0,0,1 ] ])
+      sl = ysd/zsd;
+      m = [ [ 1,0,   0,    0 ],
+           [ 0,1, -sl, -ys0 ],
+           [ 0,0,   1,  zs0 ],
+           [ 0,0,   0,    1 ] ];
+      multmatrix(m)
        linear_extrude(height=zsd, convexity=10)
        InterlockEdgePlan(negative, nlobes, length);
     }