From da1d1229478f8886664a54a69d524897c7a77b7f Mon Sep 17 00:00:00 2001
From: djerun <djerun@hamburg.ccc.de>
Date: Sat, 28 Jun 2025 01:41:42 +0200
Subject: [PATCH] [WIP] align chamfer

---
 globals.scad    | 4 ++--
 headband.scad   | 2 +-
 primitives.scad | 3 ++-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/globals.scad b/globals.scad
index 2f53cd2..1d74fc4 100644
--- a/globals.scad
+++ b/globals.scad
@@ -12,8 +12,8 @@ RAKE_WIDTH=1;
 RAKE_STRETCH=1;
 RAKE_CHAMFER=0.5;
 CHAMFER=1;
-CHAMFER_SHAPE="curve";
+CHAMFER_SHAPE="cone";
 
 INSERTICLE_X = 4.6;
 INSERTICLE_Y = 7.4;
-INSERTICLE_Z = 5.4;
\ No newline at end of file
+INSERTICLE_Z = 5.4;
diff --git a/headband.scad b/headband.scad
index 768ea3a..53465e7 100644
--- a/headband.scad
+++ b/headband.scad
@@ -4,7 +4,7 @@ use <chamfer.scad>
 
 module headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART, stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND, rake_depth=RAKE_DEPTH, rake_width=RAKE_WIDTH, rake_stretch=RAKE_STRETCH, rake_chamfer=RAKE_CHAMFER, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, with_rake=true, details=true) {
   union() {
-    /*chamfer(size=(details)?chamfer:0, child_h=height, child_bot=-height/2, shape=chamfer_shape)*/ union() {
+    chamfer(size=(details)?chamfer:0, child_h=height, child_bot=-height/2, shape=chamfer_shape) union() {
       color("purple")
         partial_ring(part, radius=size, thickness=thickness, height=height);
       rotate( 90-180*part, [0, 0, 1])
diff --git a/primitives.scad b/primitives.scad
index 72d37ca..7b4959c 100644
--- a/primitives.scad
+++ b/primitives.scad
@@ -37,7 +37,8 @@ module bezier_curve_debug(control_points, $fn=$fn) {
 // c^2=2a^2 // /2
 // c^2/2=a^2 // sqrt
 // sqrt(c^2/2)=a
-chamfer_offset = function (c) sqrt((c*c)/2);
+//chamfer_offset = function (c) sqrt((c*c)/2);
+chamfer_offset = function (c) c/2;
 
 rendered_curve_segment_vertices = function (p, v, n, width, height, chamfer)
   let (d=normalize(n-p)) let (up=[0, 0, 1]) let (right=normalize(cross(d, up))) [