add empty closed puzzle

Author: benjaminwand

items/puzzles/puzzle_empty_closed.scad

@@ -0,0 +1,32 @@
+p_x = 19;   // side length of puzzle piece
+p_y = 19;   // side length of puzzle piece
+p_z = 2;    // height of puzzle piece
+d = 0.3;    // distance between puzzle pieces
+h_s = 0.35;  // knob size
+h_d = 0.13;  // knob distance
+amount = [10, 10]; // how many pieces one wants
+$fn = 50;
+
+module smalldot() 
+resize([p_x * h_s -d, p_y * h_s - d]) cylinder(p_z, 10, 10);
+
+module bigdot()
+resize([p_x * h_s +d, p_y * h_s +d]) cylinder(p_z*3, 10, 10, true);
+
+module puzzle() 
+for (x= [0 : amount[0]-1], y = [0 : amount[1]-1]) translate([x * p_x, y * p_y]) {
+    difference(){
+        union(){
+            cube([p_x -d, p_y -d, p_z]); 
+            // The following enumeration can be used 
+            // when the pieces shall get shuffeled later
+            //color("blue") linear_extrude(p_z * 3) text(str(x*10 + y));
+        };
+        if(x>-1 && y>0) translate([p_x * 0.5, p_y * h_d]) bigdot();
+        if(x>0 && y>-1) translate([p_x * h_d, p_y * 0.5]) bigdot();
+    };
+    if(x<amount[0]-1) translate([p_x * (h_d + 1), p_y * 0.5]) smalldot();
+    if(y<amount[1]-1) translate([p_x * 0.5, p_y * (h_d + 1)]) smalldot();  
+}
+        
+puzzle();