Add bottom component as a single sliding Print-in-Place model

main.scad

@@ -7,15 +7,18 @@ use <BOSL/sliders.scad>
 
 // DEBUG:
 //validation = 1;
-//xray = 1;
+XRAY_POSITIVE=1;
+XRAY_BACKPLANE=2;
+//xray = 2;
 
 // EXPORT:
 MODEL_HARNESS_LEFT=1;
 MODEL_HARNESS_RIGHT=2;
-MODEL_HARNESS_TOP=3;
-MODEL_HARNESS_SLIDER_FRONT=4;
-MODEL_HARNESS_SLIDER_BACK=5;
-export=1; // [0:5]
+MODEL_HARNESS_BOTTOM_PIP=3;
+MODEL_HARNESS_TOP=4;
+MODEL_HARNESS_SLIDER_FRONT=5;
+MODEL_HARNESS_SLIDER_BACK=6;
+export=3; // [0:6]
 function is_not_export() = is_undef(export) || export == 0;
 function is_export() = !is_not_export();
 function is_model_strict(m) = is_export() && export == m;
@@ -23,6 +26,8 @@ function is_model(m) = is_not_export() || export == m;
 
 function get_phone_size() = [160, 76.7, 10];
 
+backplane_pip_slideout=10;
+
 module cubi(s, fillet=0, edges=EDGES_ALL) {
     if ($preview) {
         cube(s, center=true);
@@ -123,7 +128,21 @@ module phone_harness() {
         }
     }
     module shell_backplane(groove) {
-        down(hs.z/2 - shell_wall/6) up(backplane_rim_size.z/2) right(harness_divider.x) scale(groove ? 1.01 : 1) cubi(backplane_rim_size, fillet=5, edges=EDGES_Z_LF);
+        down(hs.z/2 - shell_wall/6) up(backplane_rim_size.z/2) right(harness_divider.x) {
+            back(backplane_rim_size.y/2) {
+                teeth=4;
+                segment=backplane_rim_size.y/teeth;
+                tooth_size=[backplane_rim_size.x, segment/2, backplane_rim_size.z];
+                for (i = [0:teeth-1]) {
+                    fwd(i*segment) fwd(tooth_size.y) scale(groove ? 1.02 : 1) cubi(tooth_size, fillet=2, edges=EDGES_Z_LF);
+                }
+            }
+            left(backplane_pip_slideout + 11) if (is_model_strict(MODEL_HARNESS_BOTTOM_PIP)) {
+                joiner_size=[7 + (groove?backplane_pip_slideout:0), backplane_rim_size.y, backplane_rim_size.z];
+                scale(groove ? 1.02 : 1) left(-joiner_size.x/2) cubi(joiner_size, fillet=2, edges=EDGES_Z_LF);
+            }
+        }
+        
     }
     
     // ==== SHELL SLIDER AND RAIL ====
@@ -290,7 +309,11 @@ module phone_harness() {
     }
     
     if (is_model(MODEL_HARNESS_LEFT)) model_harness_left();
-    if (is_model(MODEL_HARNESS_RIGHT)) model_harness_right();    
+    if (is_model(MODEL_HARNESS_RIGHT)) model_harness_right();
+    if (is_model_strict(MODEL_HARNESS_BOTTOM_PIP)) {
+        model_harness_left();
+        right(backplane_pip_slideout) model_harness_right();
+    }
     if (is_model(MODEL_HARNESS_TOP)) model_harness_top();
     if (is_model(MODEL_HARNESS_SLIDER_FRONT)) model_harness_slider_front();
     if (is_model(MODEL_HARNESS_SLIDER_BACK)) model_harness_slider_back();
@@ -308,7 +331,11 @@ if (!is_undef(validation)) {
 } else {
     intersection() {
         if (!is_undef(xray)) {
-            span_cube([0,1000*xray], [0,1000*xray], [-1000,1000]);
+            if (xray == XRAY_POSITIVE) {
+                span_cube([0,1000], [0,1000], [-1000,1000]);
+            } else if (xray == XRAY_BACKPLANE) {
+                span_cube([-1000,1000], [-1000,1000], [-1000,-7]);
+            }
         }
         union() {
             if (is_not_export()) {