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smooth path

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Justin Lin
2020-01-23 10:31:37 +08:00
parent 5cfa5108d4
commit f18d5b69e1
1 changed files with 16 additions and 18 deletions
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34
examples/klein_bottle.scad
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@@ -3,8 +3,7 @@ include <arc_path.scad>;
include <circle_path.scad>; include <circle_path.scad>;
include <path_extrude.scad>; include <path_extrude.scad>;
include <bezier_curve.scad>; include <bezier_curve.scad>;
include <polyline2d.scad>; include <hull_polyline2d.scad>;
include <line2d.scad>;
include <rotate_p.scad>; include <rotate_p.scad>;
include <bspline_curve.scad>; include <bspline_curve.scad>;
@@ -20,23 +19,22 @@ module klein_bottle(radius1, radius2, bottom_height, thickness, t_step, fn) {
$fn = fn; $fn = fn;
half_thickness = thickness / 2; half_thickness = thickness / 2;
module bottom() { module bottom() {
rotate(180) rotate(180)
rotate_extrude() { rotate_extrude() {
translate([radius1 + radius2, 0, 0]) ph1 = arc_path(radius = radius2, angle = [180, 360]);
polyline2d( ph2 = bezier_curve(t_step, [
arc_path(radius = radius2, angle = [180, 360]) [radius1 + radius2 * 2, 0, 0],
,thickness [radius1 + radius2 * 2, bottom_height * 0.25, 0],
); [radius1 + radius2 * 0.5, bottom_height * 0.5, 0],
[radius1, bottom_height * 0.75, 0],
[radius1, bottom_height, 0]
]);
polyline2d( path = concat([for(p = ph1) p + [radius1 + radius2, 0, 0]], ph2);
bezier_curve(t_step, [
[radius1 + radius2 * 2, 0, 0], hull_polyline2d(
[radius1 + radius2 * 2, bottom_height * 0.25, 0], path,
[radius1 + radius2 * 0.5, bottom_height * 0.5, 0],
[radius1, bottom_height * 0.75, 0],
[radius1, bottom_height, 0]
]),
thickness thickness
); );
} }
@@ -80,13 +78,13 @@ module klein_bottle(radius1, radius2, bottom_height, thickness, t_step, fn) {
union() { union() {
bottom(); bottom();
path_extrude( rotate(-90) path_extrude(
circle_path(radius1 + half_thickness), circle_path(radius1 + half_thickness),
tube_path tube_path
); );
} }
path_extrude( rotate(-90) path_extrude(
circle_path(radius1 - half_thickness), circle_path(radius1 - half_thickness),
tube_path2 tube_path2
); );