nook-case: tooth rounded

[reprap-play.git] / nook-case.scad

diff --git a/nook-case.scad b/nook-case.scad
index 6217e6e73b174e3b231d5a818f7c3ae523e20157..f3382dade1eff072b89a43ead094bb918546c41f 100644 (file)
--- a/nook-case.scad
+++ b/nook-case.scad
@@ -19,12 +19,22 @@ tape_w = 15;
 
 test_pillar = 4;
 
+engage_l0 = 10;
+engage_l1 = 10;
+engage_l2 = 3;
+
+tooth_inward = gap[0] * 1.0;
+tooth_x = nook_w * 1/6;
+tooth_w = 15;
+
 $test = false;
 
 // calculated
 
+tooth_height = nook_th;
 ledge_h = case_th;
 lid_th = case_th;
+tooth_th = case_th;
 
 spp0 = [0,0];
 spp1 = spp0 + case_th * [-1,0];
@@ -57,6 +67,16 @@ spp30 = [ spp8[0], spp31[1] ];
 
 nom_cnr = 0.5 * [nook_w, nook_h, 0] - nook_cnr_rad * [1,1,0];
 
+etxa = nom_cnr[0] - engage_l2;
+etxb = etxa - engage_l1;
+etxc = -(nom_cnr[0] - engage_l2);
+
+tppS = tppB + [-gap[0], 0];
+tppP = [ tppS[0] - tooth_th, tppC[1] ];
+tppQ = tppP + tooth_height * [0,-1] + tooth_inward * [1,0];
+tppR = [ tppS[0] + tooth_inward, tppQ[1] ];
+tppM = (tppQ + tppR) * 0.5 + tooth_th * 0.5 * [0,1];
+
 module RightSideMainProfile() {
   rectfromto(spp7, spp0);
   rectfromto(spp7, spp20);
@@ -78,13 +98,11 @@ module TopTapeCutout() {
 
 module RightTopMainProfile() {
   l = [ tppA, tppB, tppC, tppD, tppE, tppF, tppG, tppH ];
-  echo(l);
   polygon(l);
 }
 
 module LeftTopMainProfile() {
   l = [ tppC, tppD, tppE, tppF, tppG, tppK ];
-  echo(l);
   polygon(l);
 }
 
@@ -100,6 +118,21 @@ module SideTapeCutout() {
   SideTapeCutout1(spp11y, spp1[1] + 1);
 }
 
+module ToothProfile(){
+  polygon([tppA,
+          tppB,
+          tppS + [-0.1,0],
+          tppP,
+          tppC]);
+  hull(){
+    polygon([tppP,
+            tppM,
+            tppS]);
+    translate(tppM)
+      circle(r= tooth_th/2, $fa=3, $fs=0.1);
+  }
+}
+
 module Demo(){ ////toplevel
   translate([0,0,-2]) LeftSideMainProfile(); 
   translate([0,0,-2]) color("yellow") LeftTopMainProfile();
@@ -114,11 +147,12 @@ module Demo(){ ////toplevel
   translate([nook_cnr_rad*2 + 5, 0,0]) mirror([1,0,0]) {
     color("red") RightSideMainProfile();
     color("purple") RightTopMainProfile();
+    color("grey") translate([0,0,-2]) ToothProfile();
   }
   //%SideTapeCutout();
 }
 
-module FaceCore(z0,z1){
+module FaceCore(z0,z1, extra_left, extra_right){
   for (mx=[0,1]) mirror([mx,0,0]) {
       for (my=[0,1]) mirror([0,my,0]) {
          translate(-nom_cnr) {
@@ -132,9 +166,12 @@ module FaceCore(z0,z1){
        children(1-mx);
     }
   for (my=[0,1]) mirror([0,my,0]) {
-      translate([0, -nook_h/2, 0])
-       linextr_x_yz(-nom_cnr[0]-0.1, nom_cnr[0]+0.1)
-       children(0);
+      translate([0, -nook_h/2, 0]) {
+       linextr_x_yz(-nom_cnr[0]-0.1,    etxc + extra_left)  children(0);
+       linextr_x_yz(etxc - extra_right, etxb + extra_right) children(1);
+       linextr_x_yz(etxb - extra_left,  etxa + extra_left)  children(0);
+       linextr_x_yz(etxa - extra_right, nom_cnr[0]+0.1)     children(1);
+      }
     }
   if (!$test) {
     linextr(z0,z1)
@@ -143,17 +180,21 @@ module FaceCore(z0,z1){
 }
 
 module Base(){ ////toplevel
-  FaceCore(0,0) {
+  FaceCore(spp7[1],spp8[1], 0.3, 0) {
     LeftSideMainProfile();
     RightSideMainProfile();
   }
 }
 
 module Top(){ ////toplevel
-  FaceCore(0,0) {
+  FaceCore(tppE[1],tppD[1], -gap[0], gap[0] + 0.3) {
     LeftTopMainProfile();
     RightTopMainProfile();
   }
+  translate([tooth_x, nook_h/2, 0])
+    linextr_x_yz(-tooth_w/2, +tooth_w/2)
+    mirror([1,0])
+    ToothProfile();
 }
 
 module TestExtrude(){