Add ClickGroove support

gridfinity_basic_cup.scad

@@ -117,6 +117,8 @@ flat_base_rounded_easyPrint = -1;
 align_grid_x = "near";//[near, far]
 // grid position y
 align_grid_y = "near";//[near, far]
+// Enable click groove that compatible base plates can use to lock the cup in place
+enable_click_groove = false;
 
 /* [Label] */
 label_style = "disabled"; //[disabled: no label, normal:normal, gflabel:gflabel basic label, pred:pred - labels by pred, cullenect:Cullenect click labels V2,  cullenect_legacy:Cullenect click labels v1]
@@ -356,7 +358,8 @@ gridfinity_cup(
     minimumPrintablePadSize=minimum_printable_pad_size,
     flatBaseRoundedRadius = flat_base_rounded_radius,
     flatBaseRoundedEasyPrint = flat_base_rounded_easyPrint,
-    alignGrid = [align_grid_x, align_grid_y]
+    alignGrid = [align_grid_x, align_grid_y],
+    clickGroove = enable_click_groove
     ),
   wall_thickness=wall_thickness,
   vertical_chambers = ChamberSettings(

modules/module_gridfinity_block.scad

@@ -39,6 +39,14 @@ if(show_gridfinity_demo){
   }  
 }
 
+// add a click groove running along the x axis, centered on the y axis.
+module click_groove(length) {
+  height = 1.5;
+  depth = height/2;
+  gap = 0.1;
+  translate([0, 2.15+env_clearance().x/2, 2.6]) rotate([0, 90, 0]) linear_extrude(length, center=true) polygon([[(1.8-height)/2-gap, -gap], [0.9, depth], [1.8-(1.8-height)/2+gap, -gap]]);
+}
+
 // basic block with cutout in top to be stackable, optional holes in bottom
 // start with this and begin 'carving'
 //grid_block();
@@ -203,6 +211,19 @@ module grid_block(
           magnetChamfer = cupBase_settings[iCupBase_MagnetChamfer]
         );
     }
+
+    if (cupBase_settings[iCupBase_ClickGroove]) {
+      // For full pitch, we can use a normal groove that ends just before the corners. But with sub pitch, we need to handle the case where 
+      // the bin is offset one subcell, and the center of the baseplate cell is actually at the edge of the bin. To avoid interference here,
+      // cut the groove along the entire length of the block.
+      length = env_pitch() * (sub_pitch == 1 ? 0.7 : 1);
+      for (ix = [0:(num_x * sub_pitch)-1], iy = [0:(num_y * sub_pitch)-1]) translate([env_pitch().x/sub_pitch*ix, env_pitch().x/sub_pitch*iy]) {
+        translate([env_pitch().x/2, 0]) click_groove(length.x);
+        translate([env_pitch().x/2, env_pitch().y/sub_pitch]) rotate([0, 0, 180]) click_groove(length.x);
+        translate([0, env_pitch().y/2]) rotate([0, 0, -90]) click_groove(length.y);
+        translate([env_pitch().x/sub_pitch, env_pitch().y/2]) rotate([0, 0, 90]) click_groove(length.y);
+      }
+    }
   }
 
   HelpTxt("grid_block",[

modules/module_gridfinity_cup_base.scad

@@ -48,6 +48,7 @@ iCupBase_AlignGrid=17;
 iCupBase_MagnetSideAccess=18;
 iCupBase_MagnetCrushDepth=19;
 iCupBase_MagnetChamfer=20;
+iCupBase_ClickGroove=21;
 
 iCylinderDimension_Diameter=0;
 iCylinderDimension_Height=1;
@@ -108,8 +109,9 @@ function CupBaseSettings(
     magnetCrushDepth = 0,
     magnetChamfer = 0,
     alignGrid = ["near", "near"],
-    magnetSideAccess = false
-    ) =
+    magnetSideAccess = false,
+    clickGroove = false
+    ) = 
   let(
     magnetSize =
       is_num(magnetSize)
@@ -150,13 +152,14 @@ function CupBaseSettings(
       alignGrid,
       validateMagnetSideAccess(magnetSideAccess),
       magnetCrushDepth,
-      magnetChamfer
+      magnetChamfer,
+      clickGroove
       ],
     validatedResult = ValidateCupBaseSettings(result)
   ) validatedResult;
 
 function ValidateCupBaseSettings(settings, num_x, num_y) =
-  assert(is_list(settings) && len(settings) == 21, typeerror_list("CupBase Settings", settings, 19))
+  assert(is_list(settings) && len(settings) == 22, typeerror_list("CupBase Settings", settings, 22))
   assert(is_list(settings[iCupBase_MagnetSize]) && len(settings[iCupBase_MagnetSize])==2, "CupBase Magnet Setting must be a list of length 2")
   assert(is_list(settings[iCupBase_CenterMagnetSize]) && len(settings[iCupBase_CenterMagnetSize])==2, "CenterMagnet Magnet Setting must be a list of length 2")
   assert(is_list(settings[iCupBase_ScrewSize]) && len(settings[iCupBase_ScrewSize])==2, "ScrewSize Magnet Setting must be a list of length 2")
@@ -171,6 +174,7 @@ function ValidateCupBaseSettings(settings, num_x, num_y) =
   assert(is_num(settings[iCupBase_MagnetCaptiveHeight]), "CupBase Magnet Captive height setting must a number")
   assert(is_list(settings[iCupBase_AlignGrid]) && len(settings[iCupBase_AlignGrid])==2, "CupBase AlignGrid Setting must be a list of length 2")
   assert(is_string(settings[iCupBase_MagnetSideAccess]), "CupBase MagnetSideAccess Settings must be a string")
+  assert(is_bool(settings[iCupBase_ClickGroove]), "CupBase ClickGroove Setting must be a boolean")
   [
       settings[iCupBase_MagnetSize],
       validateMagnetEasyRelease(settings[iCupBase_MagnetEasyRelease]),
@@ -192,5 +196,6 @@ function ValidateCupBaseSettings(settings, num_x, num_y) =
       settings[iCupBase_AlignGrid],
       settings[iCupBase_MagnetSideAccess],
       settings[iCupBase_MagnetCrushDepth],
-      settings[iCupBase_MagnetChamfer]
+      settings[iCupBase_MagnetChamfer],
+      settings[iCupBase_ClickGroove]
       ];