add polyline_hull

src/polyline_hull.scad

@@ -0,0 +1,25 @@
+module polyline_hull(points) {
+    leng = len(points);
+    
+    module hull_line(index) {
+        hull() {
+            translate(points[index - 1]) 
+                children();
+            translate(points[index]) 
+                children();
+        }
+    }
+
+    if($children == 1) {
+        for(i = [1:leng - 1]) {
+            hull_line(i)
+                children();
+        }
+    }
+    else {
+        for(i = [1:leng - 1]) {
+            hull_line(i)
+                children(i);
+        }
+    }
+}