From 7421fa97c4daab8fdb136033b51b98ae107e0772 Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Mon, 4 Apr 2022 16:37:37 +0800
Subject: [PATCH] update doc

---
 docs/lib3x-sf_thickenT.md | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/docs/lib3x-sf_thickenT.md b/docs/lib3x-sf_thickenT.md
index 09e1e512..97cf015a 100644
--- a/docs/lib3x-sf_thickenT.md
+++ b/docs/lib3x-sf_thickenT.md
@@ -11,12 +11,12 @@ It thickens a surface with triangular mesh.
 
 ## Examples
 
+	use <triangle/tri_delaunay.scad>;
 	use <surface/sf_thickenT.scad>;
 
-	radius = 100;
 	thickness = .2;
 
-	a_step = 10;
+	a_step = 15;
 	r_step = 0.2;
 
 	function f(x, y) = (y^2 - x^2) / 4;
@@ -24,8 +24,8 @@ It thickens a surface with triangular mesh.
 	points = [
 		for(a = [a_step:a_step:360], r = [r_step:r_step:2])
 		let(
-			x = round(r * cos(a) * 100) / 100, 
-			y = round(r * sin(a) * 100) / 100
+			x = r * cos(a), 
+			y = r * sin(a)
 		)
 		[x, y, f(x, y)] 
 	];