sewing-table: Interlock: tongue/groove wip, seems to mostly work, need to make match...

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

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index 630d48911b8a2f393c6bf5d848fdbc40d85ec53e..c2ae19d6712084357c91af1b4b87850e16102fcc 100644 (file)
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -173,14 +173,27 @@ 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 = [ // zstart         zend     ystart,      yend
+    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],
                  ]) {
-      translate([0, 0, vsect[0]])
-       linear_extrude(height=vsect[1]-vsect[0], convexity=10)
+      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 ],
+           [ 0,0,   1,  zs0 ],
+           [ 0,0,   0,    1 ] ];
+      multmatrix(m)
+       linear_extrude(height=zsd, convexity=10)
        InterlockEdgePlan(negative, nlobes, length);
     }
   }