enforce minimum cubby dimensions

1 files changed, 21 insertions, 0 deletions

diff --git a/cubbies.scad b/cubbies.scad
index ea1884d..7a78b71 100644
--- a/cubbies.scad
+++ b/cubbies.scad
@@ -49,6 +49,21 @@ if ( part == "both" ) {
      female_tabs(cubby_depth, cubby_height);
 }
 
+function assert_cubby_width() =
+  let (min_width = (thickness * 2) + (strut_thickness * 2))
+      assert(cubby_width >= min_width,
+             str("Cubby width must be atleast ", min_width, "mm"));
+
+function assert_cubby_depth() =
+  let (min_depth = tab_width * 2)
+     assert(cubby_depth >= min_depth,
+            str("Cubby width must be atleast ", min_depth, "mm"));
+
+function assert_cubby_height() =
+  let (min_height = cubby_side_bracket_height())
+      assert(cubby_height >= min_height,
+             str("Cubby width must be atleast ", min_height, "mm"));
+
 function double (x) = x * 2;
 function half (x) = x / 2;
 
@@ -60,6 +75,9 @@ module both () {
 }
 
 module cubby_bottom (width, depth) {
+    let (_=assert_cubby_width());
+    let (_=assert_cubby_depth());
+
     rot(90) yrot(90) color("blue") bottom_wall() yrot(90) down(tab_height / 2) {
           move_dist=width / 2 + (tab_depth / 2);
           fwd(move_dist)
@@ -78,6 +96,9 @@ module cubby_bottom (width, depth) {
 /* this calculation needs to be referenced by the view_tab_fit function */
 function cubby_side_bracket_height() = double(tab_height) + tab_tolerance;
 module cubby_side (depth, height, screw_tabs=true) {
+    let (_=assert_cubby_depth());
+    let (_=assert_cubby_height());
+
     screw_tab_width=15;
     screw_tab_height=20;
     screw_tab_thickness=thickness;