diff --git a/src/_impl/_bezier_curve_impl.scad b/src/_impl/_bezier_curve_impl.scad
index 6a08f369..e062b3c5 100644
--- a/src/_impl/_bezier_curve_impl.scad
+++ b/src/_impl/_bezier_curve_impl.scad
@@ -1,5 +1,3 @@
-use <../__comm__/__to2d.scad>;
-
 function _combi(n, k) =
     let(  
         bi_coef = [      
diff --git a/src/collection/__comm__/_str_hash.scad b/src/collection/__comm__/_str_hash.scad
deleted file mode 100644
index ab9fc52b..00000000
--- a/src/collection/__comm__/_str_hash.scad
+++ /dev/null
@@ -1,11 +0,0 @@
-use <../../util/sum.scad>;
-
-function _str_hash(value) = 
-    let(
-	    s = str(value),
-		leng = len(s)
-	)
-	sum([
-	    for(i = [0:leng - 1])
-		ord(s[i]) * pow(31, leng - 1 - i)
-	]);
\ No newline at end of file
diff --git a/src/maze/mz_hamiltonian.scad b/src/maze/mz_hamiltonian.scad
index 23453b92..393ab45a 100644
--- a/src/maze/mz_hamiltonian.scad
+++ b/src/maze/mz_hamiltonian.scad
@@ -36,6 +36,6 @@ function mz_hamiltonian(rows, columns, start = [0, 0], seed) =
             [for(x = [0:columns * 2 - 1]) [x, 0]],
             [for(y = [0:rows * 2 - 1]) [0, y]]
         ),
-        dot_pts = dedup(sort(all, by = "vt"), sorted = true)
+        dot_pts = dedup(sort(all, by = "vt"))
     )
     _mz_hamiltonian_travel(dot_pts, start, rows * columns * 4);
\ No newline at end of file
diff --git a/src/voxel/vx_bezier.scad b/src/voxel/vx_bezier.scad
index 9262cf28..22d86252 100644
--- a/src/voxel/vx_bezier.scad
+++ b/src/voxel/vx_bezier.scad
@@ -8,17 +8,16 @@
 *
 **/ 
 
-use <__comm__/__to2d.scad>;
-use <__comm__/__to3d.scad>;
+use <../__comm__/__to2d.scad>;
+use <../__comm__/__to3d.scad>;
 use <_impl/_vx_bezier_impl.scad>;
-use <collection/hashset.scad>;
-use <collection/hashset_list.scad>;
+use <../util/dedup.scad>;
 
 function vx_bezier(p1, p2, p3, p4) = 
     let(
         is2d = len(p1) == 2,
         pts = is2d ? _vx_bezier2(__to3d(p1), __to3d(p2), __to3d(p3), __to3d(p4), []) :
                      _vx_bezier3(p1, p2, p3, p4, []),
-        deduped = hashset_list(hashset(pts))
+        deduped = dedup(pts)
     )
     is2d ? [for(p = deduped) __to2d(p)] : deduped;
\ No newline at end of file
diff --git a/src/voxel/vx_circle.scad b/src/voxel/vx_circle.scad
index 00e73311..ce6092bc 100644
--- a/src/voxel/vx_circle.scad
+++ b/src/voxel/vx_circle.scad
@@ -9,11 +9,8 @@
 **/ 
 
 use <_impl/_vx_circle_impl.scad>;
-use <collection/hashset.scad>;
-use <collection/hashset_list.scad>;
+use <../util/dedup.scad>;
 
 function vx_circle(radius, filled = false) = 
     let(all = _vx_circle_impl(radius, filled))
-    hashset_list(
-        hashset(all)
-    );
\ No newline at end of file
+    dedup(all);
\ No newline at end of file
diff --git a/src/voxel/vx_curve.scad b/src/voxel/vx_curve.scad
index 66d5c843..f315b763 100644
--- a/src/voxel/vx_curve.scad
+++ b/src/voxel/vx_curve.scad
@@ -9,7 +9,6 @@
 **/ 
 
 use <_impl/_vx_curve_impl.scad>;
-use <../util/sort.scad>;
 use <../util/dedup.scad>;
 
 function vx_curve(points, tightness = 0) = 
@@ -26,4 +25,4 @@ function vx_curve(points, tightness = 0) =
             [points[leng - 2]]
         )
     )
-    dedup(sort(pts, by = "vt"), sorted = true);
\ No newline at end of file
+    dedup(pts);
\ No newline at end of file
diff --git a/src/voxel/vx_polygon.scad b/src/voxel/vx_polygon.scad
index 3ff58869..361985bc 100644
--- a/src/voxel/vx_polygon.scad
+++ b/src/voxel/vx_polygon.scad
@@ -1,8 +1,7 @@
 use <../in_shape.scad>;
 use <../util/sort.scad>;
+use <../util/dedup.scad>;
 use <vx_polyline.scad>;
-use <collection/hashset.scad>;
-use <collection/hashset_list.scad>;
 
 function vx_polygon(points, filled = false) =
     let(contour = vx_polyline(concat(points, [points[0]])))
@@ -29,4 +28,4 @@ function vx_polygon(points, filled = false) =
             ]
         )
     )
-    hashset_list(hashset(all));
\ No newline at end of file
+    dedup(all);
\ No newline at end of file
diff --git a/src/voxel/vx_polyline.scad b/src/voxel/vx_polyline.scad
index a13bd8b3..68ce6b10 100644
--- a/src/voxel/vx_polyline.scad
+++ b/src/voxel/vx_polyline.scad
@@ -11,7 +11,6 @@
 use <../__comm__/__to3d.scad>;
 use <../__comm__/__to2d.scad>;
 use <../__comm__/__lines_from.scad>;
-use <../util/sort.scad>;
 use <../util/dedup.scad>;
 use <vx_line.scad>;
 
@@ -22,7 +21,6 @@ function vx_polyline(points) =
         polyline = [for(line =  __lines_from(pts)) each vx_line(line[0], line[1])]
     )
     dedup(is_2d ? 
-        sort([for(pt = polyline) __to2d(pt)], by = "vt")
-         : 
-        sort(polyline, by = "vt")
-    , sorted = true);
\ No newline at end of file
+        [for(pt = polyline) __to2d(pt)] : 
+        polyline
+    );
\ No newline at end of file
diff --git a/src/voxel/vx_union.scad b/src/voxel/vx_union.scad
index d5f2ca46..34363212 100644
--- a/src/voxel/vx_union.scad
+++ b/src/voxel/vx_union.scad
@@ -8,10 +8,6 @@
 *
 **/ 
 
-use <collection/hashset.scad>;
-use <collection/hashset_list.scad>;
+use <../util/dedup.scad>;
 
-function vx_union(points1, points2) =
-    hashset_list(
-        hashset(concat(points1, points2))
-    );
\ No newline at end of file
+function vx_union(points1, points2) = dedup(concat(points1, points2));
\ No newline at end of file
diff --git a/test/util/test_dedup.scad b/test/util/test_dedup.scad
index 798c6811..1fd62f19 100644
--- a/test/util/test_dedup.scad
+++ b/test/util/test_dedup.scad
@@ -1,5 +1,4 @@
 use <util/dedup.scad>;
-use <util/sort.scad>;
 
 module test_dedup() {
     echo("==== test_dedup ====");
@@ -16,16 +15,6 @@ module test_dedup() {
         dedup([[1, 1, 2], [3, 4, 2], [7, 2, 2], [3, 4, 2], [1, 2, 3]], eq = eq) 
             == [[1, 1, 2], [3, 4, 2], [7, 2, 2], [1, 2, 3]]
     );
-
-    sorted = sort([[1, 1, 2], [3, 4, 2], [7, 2, 2], [3, 4, 2], [1, 2, 3]]);
-
-    assert(
-        dedup(sorted, sorted = true) == [[1, 1, 2], [1, 2, 3], [3, 4, 2], [7, 2, 2]]
-    );
-
-    assert(
-        dedup(sorted, sorted = true, eq = eq) == [[1, 1, 2], [1, 2, 3], [3, 4, 2], [7, 2, 2]]
-    );
 }
 
 test_dedup();
\ No newline at end of file
diff --git a/test/voxel/test_vx_circle.scad b/test/voxel/test_vx_circle.scad
index 06f1ba27..78ddc340 100644
--- a/test/voxel/test_vx_circle.scad
+++ b/test/voxel/test_vx_circle.scad
@@ -4,8 +4,9 @@ use <voxel/vx_circle.scad>;
 module test_vx_circle() {
     echo("==== test_vx_circle ====");
 
-    expected = [[0, -10], [0, -1], [6, 1], [5, -2], [-5, 2], [-1, -3], [1, 3], [-6, -4], [9, 4], [-8, 5], [-5, -8], [4, -6], [4, 6], [-3, 7], [-5, 0], [1, -10], [-1, -1], [1, 1], [-6, -2], [9, 2], [-8, 3], [4, -4], [4, 4], [2, 9], [9, -5], [-3, 5], [3, -8], [-5, -6], [-6, 8], [7, 7], [9, 0], [-8, 1], [2, -10], [4, -2], [4, 2], [9, -3], [-3, 3], [-5, -4], [7, 5], [-4, -8], [3, -6], [-6, 6], [-1, 8], [2, 7], [4, 0], [9, -1], [-3, 1], [-5, -2], [3, -10], [7, 3], [10, 3], [3, -4], [-6, 4], [-4, 9], [8, -5], [2, 5], [2, -8], [-4, -6], [-1, 6], [5, 8], [7, 1], [10, 1], [3, -2], [-6, 2], [8, -3], [2, 3], [-4, -4], [-1, 4], [-9, -5], [-9, 5], [-3, -8], [2, -6], [5, 6], [0, 8], [7, -7], [-4, 7], [-6, 0], [8, -1], [2, 1], [-10, -2], [-4, -2], [-1, 2], [-9, -3], [-9, 3], [2, -4], [5, 4], [3, 9], [7, -5], [-4, 5], [1, -8], [-3, -6], [0, 6], [-1, 0], [-9, -1], [-9, 1], [2, -2], [5, 2], [7, -3], [10, -3], [-10, 3], [-4, 3], [3, 10], [-3, -4], [0, 4], [-8, -5], [8, 5], [-2, -8], [1, -6], [-7, 6], [-2, 8], [6, -7], [3, 7], [5, 0], [7, -1], [10, -1], [-10, 1], [-4, 1], [-3, -2], [0, 2], [-8, -3], [8, 3], [1, -4], [-7, 4], [5, -9], [6, -5], [3, 5], [-5, 9], [0, -8], [-2, -6], [-2, 6], [6, 8], [-7, -7], [0, 0], [-8, -1], [8, 1], [1, -2], [-7, 2], [2, 10], [6, -3], [3, 3], [-2, -4], [-2, 4], [-7, -5], [-1, -8], [0, -6], [6, 6], [1, 8], [5, -7], [-5, 7], [-7, 0], [6, -1], [3, 1], [-2, -2], [-2, 2], [-7, -3], [-3, 10], [4, -9], [0, -4], [6, 4], [4, 9], [5, -5], [-5, 5], [-1, -6], [1, 6], [-6, -7], [-2, 0], [-1, -10], [-7, -1], [1, 10], [0, -2], [6, 2], [5, -3], [-5, 3], [-1, -4], [1, 4], [-5, -9], [-6, -5], [9, 5], [-8, 6], [-3, 8], [4, -7], [4, 7], [6, 0], [5, -1], [-5, 1], [-2, -10], [-1, -2], [1, 2], [-2, 10], [-6, -3], [9, 3], [3, -9], [-8, 4], [4, -5], [4, 5], [-3, 6], [-5, -7], [0, 10], [1, 0], [-6, -1], [9, 1], [-8, 2], [-3, -10], [4, -3], [4, 3], [-4, -9], [9, -4], [-3, 4], [-1, 9], [-5, -5], [7, 6], [2, 8], [3, -7], [-6, 7], [-8, 0], [4, -1], [4, 1], [-1, 10], [9, -2], [-3, 2], [-5, -3], [2, -9], [7, 4], [3, -5], [-6, 5], [5, 9], [8, -6], [2, 6], [-4, -7], [-1, 7], [-3, 0], [-5, -1], [7, 2], [10, 2], [3, -3], [-6, 3], [-3, -9], [8, -4], [2, 4], [0, 9], [-4, -5], [-1, 5], [-4, 8], [2, -7], [5, 7], [7, 0], [10, 0], [3, -1], [-6, 1], [8, -2], [2, 2], [-10, -3], [-4, -3], [-1, 3], [1, -9], [-9, -4], [-9, 4], [2, -5], [5, 5], [7, -6], [-4, 6], [-3, -7], [0, 7], [2, 0], [-10, -1], [-4, -1], [-1, 1], [-9, -2], [-9, 2], [2, -3], [5, 3], [-2, -9], [7, -4], [-4, 4], [-2, 9], [-3, -5], [0, 5], [6, -8], [-8, -6], [8, 6], [3, 8], [1, -7], [-7, 7], [-9, 0], [2, -1], [5, 1], [7, -2], [10, -2], [-10, 2], [-4, 2], [-3, -3], [0, 3], [0, -9], [-8, -4], [8, 4], [1, -5], [-7, 5], [6, -6], [3, 6], [-2, -7], [-2, 7], [-10, 0], [-4, 0], [-3, -1], [0, 1], [-8, -2], [8, 2], [1, -3], [-7, 3], [-1, -9], [6, -4], [3, 4], [1, 9], [-2, -5], [-2, 5], [5, -8], [-7, -6], [-5, 8], [0, -7], [6, 7], [8, 0], [1, -1], [-7, 1], [6, -2], [3, 2], [-2, -3], [-2, 3], [-7, -4], [0, -5], [6, 5], [-6, -8], [5, -6], [-5, 6], [-1, -7], [1, 7], [3, 0], [-2, -1], [-2, 1], [-7, -2], [0, -3], [6, 3], [5, -4], [-5, 4], [-3, 9], [-1, -5], [1, 5], [4, -8], [-6, -6], [4, 8]];
+    expected =  [[0, 10], [0, -10], [-10, 0], [-9, 0], [-8, 0], [-7, 0], [-6, 0], [-5, 0], [-4, 0], [-3, 0], [-2, 0], [-1, 0], [0, 0], [1, 0], [2, 0], [3, 0], [4, 0], [5, 0], [6, 0], [7, 0], [8, 0], [9, 0], [10, 0], [-1, -10], [1, -10], [-10, -1], [-9, -1], [-8, -1], [-7, -1], [-6, -1], [-5, -1], [-4, -1], [-3, -1], [-2, -1], [-1, -1], [0, -1], [1, -1], [2, -1], [3, -1], [4, -1], [5, -1], [6, -1], [7, -1], [8, -1], [9, -1], [10, -1], [-10, 1], [-9, 1], [-8, 1], [-7, 1], [-6, 1], [-5, 1], [-4, 1], [-3, 1], [-2, 1], [-1, 1], [0, 1], [1, 1], [2, 1], [3, 1], [4, 1], [5, 1], [6, 1], [7, 1], [8, 1], [9, 1], [10, 1], [-1, 10], [1, 10], [-2, -10], [2, -10], [-10, -2], [-9, -2], [-8, -2], [-7, -2], [-6, -2], [-5, -2], [-4, -2], [-3, -2], [-2, -2], [-1, -2], [0, -2], [1, -2], [2, -2], [3, -2], [4, -2], [5, -2], [6, -2], [7, -2], [8, -2], [9, -2], [10, -2], [-10, 2], [-9, 2], [-8, 2], [-7, 2], [-6, 2], [-5, 2], [-4, 2], [-3, 2], [-2, 2], [-1, 2], [0, 2], [1, 2], [2, 2], [3, 2], [4, 2], [5, 2], [6, 2], [7, 2], [8, 2], [9, 2], [10, 2], [-2, 10], [2, 10], [-3, -10], [3, -10], [-10, -3], [-9, -3], [-8, -3], [-7, -3], [-6, -3], [-5, -3], [-4, -3], [-3, -3], [-2, -3], [-1, -3], [0, -3], [1, -3], [2, -3], [3, -3], [4, -3], [5, -3], [6, -3], [7, -3], [8, -3], [9, -3], [10, -3], [-10, 3], [-9, 3], [-8, 3], [-7, 3], [-6, 3], [-5, 3], [-4, 3], [-3, 3], [-2, 3], [-1, 3], [0, 3], [1, 3], [2, 3], [3, 3], [4, 3], [5, 3], [6, 3], [7, 3], [8, 3], [9, 3], [10, 3], [-3, 10], [3, 10], [-4, -9], [-3, -9], [-2, -9], [-1, -9], [0, -9], [1, -9], [2, -9], [3, -9], [4, -9], [-9, -4], [-8, -4], [-7, -4], [-6, -4], [-5, -4], [-4, -4], [-3, -4], [-2, -4], [-1, -4], [0, -4], [1, -4], [2, -4], [3, -4], [4, -4], [5, -4], [6, -4], [7, -4], [8, -4], [9, -4], [-9, 4], [-8, 4], [-7, 4], [-6, 4], [-5, 4], [-4, 4], [-3, 4], [-2, 4], [-1, 4], [0, 4], [1, 4], [2, 4], [3, 4], [4, 4], [5, 4], [6, 4], [7, 4], [8, 4], [9, 4], [-4, 9], [-3, 9], [-2, 9], [-1, 9], [0, 9], [1, 9], [2, 9], [3, 9], [4, 9], [-5, -9], [5, -9], [-9, -5], [-8, -5], [-7, -5], [-6, -5], [-5, -5], [-4, -5], [-3, -5], [-2, -5], [-1, -5], [0, -5], [1, -5], [2, -5], [3, -5], [4, -5], [5, -5], [6, -5], [7, -5], [8, -5], [9, -5], [-9, 5], [-8, 5], [-7, 5], [-6, 5], [-5, 5], [-4, 5], [-3, 5], [-2, 5], [-1, 5], [0, 5], [1, 5], [2, 5], [3, 5], [4, 5], [5, 5], [6, 5], [7, 5], [8, 5], [9, 5], [-5, 9], [5, 9], [-6, -8], [-5, -8], [-4, -8], [-3, -8], [-2, -8], [-1, -8], [0, -8], [1, -8], [2, -8], [3, -8], [4, -8], [5, -8], [6, -8], [-8, -6], [-7, -6], [-6, -6], [-5, -6], [-4, -6], [-3, -6], [-2, -6], [-1, -6], [0, -6], [1, -6], [2, -6], [3, -6], [4, -6], [5, -6], [6, -6], [7, -6], [8, -6], [-8, 6], [-7, 6], [-6, 6], [-5, 6], [-4, 6], [-3, 6], [-2, 6], [-1, 6], [0, 6], [1, 6], [2, 6], [3, 6], [4, 6], [5, 6], [6, 6], [7, 6], [8, 6], [-6, 8], [-5, 8], [-4, 8], [-3, 8], [-2, 8], [-1, 8], [0, 8], [1, 8], [2, 8], [3, 8], [4, 8], [5, 8], [6, 8], [-7, -7], [-6, -7], [-5, -7], [-4, -7], [-3, -7], [-2, -7], [-1, -7], [0, -7], [1, -7], [2, -7], [3, -7], [4, -7], [5, -7], [6, -7], [7, -7], [-7, 7], [-6, 7], [-5, 7], [-4, 7], [-3, 7], [-2, 7], [-1, 7], [0, 7], [1, 7], [2, 7], [3, 7], [4, 7], [5, 7], [6, 7], [7, 7]];
     actual = vx_circle(10, true);
+
     assertEqualPoints(expected, actual);
 }
 
diff --git a/test/voxel/test_vx_polygon.scad b/test/voxel/test_vx_polygon.scad
index f3026809..c1ba2a86 100644
--- a/test/voxel/test_vx_polygon.scad
+++ b/test/voxel/test_vx_polygon.scad
@@ -4,11 +4,11 @@ use <voxel/vx_polygon.scad>;
 module test_vx_polygon() { 
     echo("==== test_vx_polygon ====");
 
-    expected = [[-5, -10], [-5, -9], [-4, -9], [-6, -8], [-4, -8], [-6, -7], [-3, -7], [-6, -6], [-3, -6], [-7, -5], [-2, -5], [-7, -4], [-2, -4], [-7, -3], [-1, -3], [-8, -2], [-1, -2], [-8, -1], [0, -1], [-8, 0], [0, 0], [-9, 1], [1, 1], [-9, 2], [1, 2], [-9, 3], [2, 3], [-10, 4], [2, 4], [-10, 5], [-9, 5], [3, 5], [-8, 6], [-7, 6], [-6, 6], [3, 6], [-5, 7], [-4, 7], [-3, 7], [4, 7], [-2, 8], [-1, 8], [0, 8], [4, 8], [1, 9], [2, 9], [3, 9], [5, 9], [4, 10], [5, 10]];
+    expected =  [[5, 10], [4, 10], [3, 9], [2, 9], [1, 9], [0, 8], [-1, 8], [-2, 8], [-3, 7], [-4, 7], [-5, 7], [-6, 6], [-7, 6], [-8, 6], [-9, 5], [-10, 5], [-10, 4], [-9, 3], [-9, 2], [-9, 1], [-8, 0], [-8, -1], [-8, -2], [-7, -3], [-7, -4], [-7, -5], [-6, -6], [-6, -7], [-6, -8], [-5, -9], [-5, -10], [-4, -9], [-4, -8], [-3, -7], [-3, -6], [-2, -5], [-2, -4], [-1, -3], [-1, -2], [0, -1], [0, 0], [1, 1], [1, 2], [2, 3], [2, 4], [3, 5], [3, 6], [4, 7], [4, 8], [5, 9]];
     actual = vx_polygon([[5, 10], [-10, 5], [-5, -10]], false); 
     assertEqualPoints(expected, actual);
 
-    expected2 =  [[-6, 6], [0, 8], [-1, -1], [-5, 1], [-8, 3], [-3, 4], [2, 5], [-1, 7], [-3, -7], [-7, -3], [-8, -2], [0, -1], [-9, 3], [3, 5], [-7, 6], [-4, -6], [-5, -5], [-6, -4], [-6, 1], [-1, 2], [0, 3], [-4, 4], [-2, 7], [1, 8], [-8, 6], [-3, 7], [-2, -3], [-3, -2], [-4, -1], [-7, 1], [-2, 2], [1, 3], [-5, 4], [2, 8], [-4, -9], [-6, -7], [2, 3], [-10, 5], [-4, 7], [-5, -8], [-8, 1], [-3, 2], [-6, 4], [-1, 5], [0, 6], [3, 8], [-9, 1], [-5, 7], [4, 8], [5, 10], [-3, -5], [-4, -4], [-5, -3], [-6, -2], [-7, -1], [-1, 0], [0, 1], [-4, 2], [-7, 4], [-2, 5], [1, 6], [-1, -2], [1, 1], [-1, 8], [-2, -1], [-2, 0], [-5, 2], [-8, 4], [-3, 5], [2, 6], [-7, -4], [3, 6], [-2, 8], [1, 9], [-4, -7], [-5, -6], [-6, -5], [-3, 0], [-6, 2], [-1, 3], [-9, 4], [0, 4], [-4, 5], [-5, -10], [-2, -4], [2, 9], [-3, -3], [-4, -2], [-5, -1], [-4, 0], [-7, 2], [-2, 3], [1, 4], [-5, 5], [-5, -9], [-6, -8], [2, 4], [3, 9], [-5, 0], [-8, 2], [-3, 3], [-6, 5], [-1, 6], [0, 7], [-3, -6], [-8, -1], [-9, 2], [-4, -5], [-5, -4], [-6, -3], [-7, -2], [-6, 0], [-1, 1], [0, 2], [-4, 3], [-7, 5], [-2, 6], [1, 7], [4, 9], [-1, -3], [1, 2], [5, 9], [-2, -2], [-3, -1], [-7, 0], [-2, 1], [-5, 3], [-8, 5], [-3, 6], [2, 7], [-4, -8], [-6, -6], [-7, -5], [-8, 0], [-10, 4], [-9, 5], [-5, -7], [-3, 1], [-6, 3], [-1, 4], [0, 5], [-4, 6], [3, 7], [-2, -5], [0, 0], [4, 7], [4, 10], [-3, -4], [-4, -3], [-5, -2], [-6, -1], [-4, 1], [-7, 3], [-2, 4], [1, 5], [-5, 6]];
+    expected2 = [[-5, -10], [-5, -9], [-4, -9], [-6, -8], [-4, -8], [-6, -7], [-3, -7], [-6, -6], [-3, -6], [-7, -5], [-2, -5], [-7, -4], [-2, -4], [-7, -3], [-1, -3], [-8, -2], [-1, -2], [-8, -1], [0, -1], [-8, 0], [0, 0], [-9, 1], [1, 1], [-9, 2], [1, 2], [-9, 3], [2, 3], [-10, 4], [2, 4], [-10, 5], [-9, 5], [3, 5], [-8, 6], [-7, 6], [-6, 6], [3, 6], [-5, 7], [-4, 7], [-3, 7], [4, 7], [-2, 8], [-1, 8], [0, 8], [4, 8], [1, 9], [2, 9], [3, 9], [5, 9], [4, 10], [5, 10], [-5, -8], [-5, -7], [-4, -7], [-5, -6], [-4, -6], [-6, -5], [-5, -5], [-4, -5], [-3, -5], [-6, -4], [-5, -4], [-4, -4], [-3, -4], [-6, -3], [-5, -3], [-4, -3], [-3, -3], [-2, -3], [-7, -2], [-6, -2], [-5, -2], [-4, -2], [-3, -2], [-2, -2], [-7, -1], [-6, -1], [-5, -1], [-4, -1], [-3, -1], [-2, -1], [-1, -1], [-7, 0], [-6, 0], [-5, 0], [-4, 0], [-3, 0], [-2, 0], [-1, 0], [-8, 1], [-7, 1], [-6, 1], [-5, 1], [-4, 1], [-3, 1], [-2, 1], [-1, 1], [0, 1], [-8, 2], [-7, 2], [-6, 2], [-5, 2], [-4, 2], [-3, 2], [-2, 2], [-1, 2], [0, 2], [-8, 3], [-7, 3], [-6, 3], [-5, 3], [-4, 3], [-3, 3], [-2, 3], [-1, 3], [0, 3], [1, 3], [-9, 4], [-8, 4], [-7, 4], [-6, 4], [-5, 4], [-4, 4], [-3, 4], [-2, 4], [-1, 4], [0, 4], [1, 4], [-8, 5], [-7, 5], [-6, 5], [-5, 5], [-4, 5], [-3, 5], [-2, 5], [-1, 5], [0, 5], [1, 5], [2, 5], [-5, 6], [-4, 6], [-3, 6], [-2, 6], [-1, 6], [0, 6], [1, 6], [2, 6], [-2, 7], [-1, 7], [0, 7], [1, 7], [2, 7], [3, 7], [1, 8], [2, 8], [3, 8], [4, 9]];
     actual2 = vx_polygon([[5, 10], [-10, 5], [-5, -10]], true); 
     assertEqualPoints(expected2, actual2);
 }
diff --git a/test/voxel/test_vx_polyline.scad b/test/voxel/test_vx_polyline.scad
index 387b49b4..11a4c288 100644
--- a/test/voxel/test_vx_polyline.scad
+++ b/test/voxel/test_vx_polyline.scad
@@ -4,7 +4,7 @@ use <voxel/vx_polyline.scad>;
 module test_vx_polyline() {
     echo("==== test_vx_polyline ====");
 
-    expected = [[3, 8, 5], [4, 9, 5], [5, 10, 5], [-3, 2, 6], [-2, 3, 6], [-1, 4, 6], [0, 5, 6], [1, 6, 6], [2, 7, 6], [-9, -4, 7], [-8, -3, 7], [-7, -2, 7], [-6, -1, 7], [-5, 0, 7], [-4, 1, 7], [-15, -10, 8], [-14, -9, 8], [-13, -8, 8], [-12, -7, 8], [-11, -6, 8], [-10, -5, 8], [-21, -16, 9], [-20, -15, 9], [-19, -14, 9], [-18, -13, 9], [-17, -12, 9], [-16, -11, 9], [-25, -20, 10], [-25, -19, 10], [-24, -19, 10], [-25, -18, 10], [-23, -18, 10], [-25, -17, 10], [-22, -17, 10], [-25, -16, 11], [-25, -15, 11], [-25, -14, 11], [-25, -13, 11], [-25, -12, 11], [-25, -11, 11], [-25, -10, 11], [-25, -9, 12], [-25, -8, 12], [-25, -7, 12], [-25, -6, 12], [-25, -5, 12], [-25, -4, 12], [-25, -3, 12], [-25, -2, 13], [-25, -1, 13], [-25, 0, 13], [-25, 1, 13], [-25, 2, 13], [-25, 3, 13], [-25, 4, 13], [-25, 5, 14], [-25, 6, 14], [-25, 7, 14], [-25, 8, 14], [-25, 9, 14], [-25, 10, 14], [-25, 11, 14], [-25, 12, 15], [-25, 13, 15], [-25, 14, 15], [-25, 15, 15], [-24, 15, 15], [-23, 15, 15], [-22, 16, 15], [-21, 16, 15], [-20, 16, 16], [-19, 16, 16], [-18, 16, 16], [-17, 17, 16], [-16, 17, 16], [-15, 17, 16], [-14, 17, 16], [-13, 17, 16], [-12, 18, 16], [-11, 18, 16], [-10, 18, 17], [-9, 18, 17], [-8, 18, 17], [-7, 19, 17], [-6, 19, 17], [-5, 19, 17], [-4, 19, 17], [-3, 19, 17], [-2, 20, 17], [-1, 20, 17], [0, 20, 18], [1, 20, 18], [2, 20, 18], [3, 21, 18], [4, 21, 18], [5, 21, 18], [6, 21, 18], [7, 21, 18], [8, 22, 18], [9, 22, 18], [10, 22, 19], [11, 22, 19], [12, 22, 19], [13, 23, 19], [14, 23, 19], [15, 23, 19], [16, 23, 19], [17, 23, 19], [18, 24, 19], [19, 24, 19], [20, 24, 20], [21, 24, 20], [22, 24, 20], [23, 25, 20], [24, 25, 20]];
+    expected = [[5, 10, 5], [4, 9, 5], [3, 8, 5], [2, 7, 6], [1, 6, 6], [0, 5, 6], [-1, 4, 6], [-2, 3, 6], [-3, 2, 6], [-4, 1, 7], [-5, 0, 7], [-6, -1, 7], [-7, -2, 7], [-8, -3, 7], [-9, -4, 7], [-10, -5, 8], [-11, -6, 8], [-12, -7, 8], [-13, -8, 8], [-14, -9, 8], [-15, -10, 8], [-16, -11, 9], [-17, -12, 9], [-18, -13, 9], [-19, -14, 9], [-20, -15, 9], [-21, -16, 9], [-22, -17, 10], [-23, -18, 10], [-24, -19, 10], [-25, -20, 10], [-25, -19, 10], [-25, -18, 10], [-25, -17, 10], [-25, -16, 11], [-25, -15, 11], [-25, -14, 11], [-25, -13, 11], [-25, -12, 11], [-25, -11, 11], [-25, -10, 11], [-25, -9, 12], [-25, -8, 12], [-25, -7, 12], [-25, -6, 12], [-25, -5, 12], [-25, -4, 12], [-25, -3, 12], [-25, -2, 13], [-25, -1, 13], [-25, 0, 13], [-25, 1, 13], [-25, 2, 13], [-25, 3, 13], [-25, 4, 13], [-25, 5, 14], [-25, 6, 14], [-25, 7, 14], [-25, 8, 14], [-25, 9, 14], [-25, 10, 14], [-25, 11, 14], [-25, 12, 15], [-25, 13, 15], [-25, 14, 15], [-25, 15, 15], [-24, 15, 15], [-23, 15, 15], [-22, 16, 15], [-21, 16, 15], [-20, 16, 16], [-19, 16, 16], [-18, 16, 16], [-17, 17, 16], [-16, 17, 16], [-15, 17, 16], [-14, 17, 16], [-13, 17, 16], [-12, 18, 16], [-11, 18, 16], [-10, 18, 17], [-9, 18, 17], [-8, 18, 17], [-7, 19, 17], [-6, 19, 17], [-5, 19, 17], [-4, 19, 17], [-3, 19, 17], [-2, 20, 17], [-1, 20, 17], [0, 20, 18], [1, 20, 18], [2, 20, 18], [3, 21, 18], [4, 21, 18], [5, 21, 18], [6, 21, 18], [7, 21, 18], [8, 22, 18], [9, 22, 18], [10, 22, 19], [11, 22, 19], [12, 22, 19], [13, 23, 19], [14, 23, 19], [15, 23, 19], [16, 23, 19], [17, 23, 19], [18, 24, 19], [19, 24, 19], [20, 24, 20], [21, 24, 20], [22, 24, 20], [23, 25, 20], [24, 25, 20]];
     actual = vx_polyline([[5, 10, 5], [-25, -20, 10], [-25, 15, 15], [25, 25, 20]]);
 
     assertEqualPoints(expected, actual);