change param name

examples/turtle/hilbert_curve_drawing.scad

@@ -3,7 +3,7 @@ use <hull_polyline3d.scad>;
 use <util/dedup.scad>;
 use <turtle/lsystem3.scad>;
 
-thickness = 0.3;
+diameter = 0.3;
 corner_r = 0.5;
 
 lines = hilbert_curve();
@@ -14,7 +14,7 @@ hilbert_path = dedup(
     );
 smoothed_hilbert_path = bezier_smooth(hilbert_path, corner_r);
 
-hull_polyline3d(smoothed_hilbert_path,  thickness = thickness);
+hull_polyline3d(smoothed_hilbert_path,  diameter = diameter);
 
 function hilbert_curve() = 
     let(

examples/turtle/hilbert_dragon.scad

@@ -1,6 +1,5 @@
 use <shear.scad>;
 use <along_with.scad>;
-use <hull_polyline3d.scad>;
 use <bezier_smooth.scad>;
 use <ellipse_extrude.scad>;
 use <shape_trapezium.scad>;

examples/turtle/lsystem3_collection.scad

@@ -4,7 +4,7 @@ use <hull_polyline3d.scad>;
 for(line = hilbert_curve()) {
     hull_polyline3d(
         [line[0], line[1]], 
-        thickness = 0.5, 
+        diameter = 0.5, 
         $fn = 4
     );
 }