Adding simple dove tail joint

scad/Mechanical.scad

+
+
+// This file is just an inclusion proxy
+// It is designed to be included by the `use`-statement without
+// needing to mention every single of it's sub-components
+
+
+include <mechanical/DoveTail.scad>

scad/mechanical/DoveTail.scad

+
+// TODO: Documentation!
+// w    = width   (X)
+// h    = height  (Y)
+// a    = angle   (degrees)
+// body = ???     (-Y)
+module DoveTailProfile(w, h, a=27, body=0) {
+
+  w2 = w / 2;
+
+  // "Ankathete" = "Gegenkathete" / tan(alpha)
+  AK = h / tan(90-a);
+
+  polygon([
+    [-w2, h],
+    [w2, h],
+    [w2 - AK, 0],
+    [w2 - AK, -body],
+    [-w2 + AK, -body],
+    [-w2 + AK, 0],
+    [-w2, h]
+  ]);
+}
+
+
+
+
+DoveTailProfile(50, 10, body=5);
+
+