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tube use bspline_curve

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This commit is contained in:
Justin Lin
2019-10-11 20:44:36 +08:00
parent 16637b098c
commit 426f2623f7
1 changed files with 29 additions and 18 deletions
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49
examples/klein_bottle.scad
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@@ -6,6 +6,7 @@ include <bezier_curve.scad>;
include <polyline2d.scad>; include <polyline2d.scad>;
include <line2d.scad>; include <line2d.scad>;
include <rotate_p.scad>; include <rotate_p.scad>;
include <bspline_curve.scad>;
radius1 = 10; radius1 = 10;
radius2 = 20; radius2 = 20;
@@ -46,34 +47,44 @@ module klein_bottle(radius1, radius2, bottom_height, thickness, t_step, fn) {
mid_pts = [ mid_pts = [
[0, 0, bottom_height + radius1], [0, 0, bottom_height + radius1],
[0, 0, bottom_height + radius1 * 2], [0, 0, bottom_height + radius1 * 2],
[0, radius1, bottom_height + radius1 * 3], [0, radius1, bottom_height + radius1 * 3.5],
[0, radius1 * 2, bottom_height + radius1 * 3], [0, radius1 * 2.5, bottom_height + radius1 * 3.75],
[0, radius1 * 3, bottom_height + radius1 * 3], [0, radius1 * 3.5, bottom_height + radius1 * 3.5],
[0, radius1 * 4, bottom_height + radius1 * 2], [0, radius1 * 4.5, bottom_height + radius1 * 2.5],
[0, radius1 * 4, bottom_height + radius1], [0, radius1 * 4.5, bottom_height + radius1],
[0, radius1 * 4, bottom_height], [0, radius1 * 4.5, bottom_height],
[0, radius1 * 3, bottom_height - radius1], [0, radius1 * 3.5, bottom_height - radius1],
[0, radius1 * 2, bottom_height - radius1 * 2], [0, radius1 * 1, bottom_height - radius1 * 2],
[0, radius1, bottom_height + half_thickness - radius1 * 3], [0, radius1 * 0.15, bottom_height + half_thickness - radius1 * 3],
[0, 0, bottom_height - radius1 * 4], [0, 0, bottom_height - radius1 * 4],
[0, 0, bottom_height - radius1 * 5] [0, 0, bottom_height - radius1 * 5]
]; ];
tube_path = bezier_curve( degree = 2;
t_step, pts_leng = 15;
concat( knot_leng = 18;
concat([[0, 0, bottom_height]], mid_pts),
[[0, 0, 0]] knots = concat(
) [0, 0, 0],
[for(i = [1:12]) i / 13],
[2, 2, 2]
); );
tube_path2 = bezier_curve( tube_path = bspline_curve(
t_step, t_step,
degree,
concat(
concat([[0, 0, bottom_height]], mid_pts),
[[0, 0, -thickness]]
), knots);
tube_path2 = bspline_curve(
t_step,
degree,
concat( concat(
concat([[0, 0, bottom_height - thickness]], mid_pts), concat([[0, 0, bottom_height - thickness]], mid_pts),
[[0, 0, -thickness] ] [[0, 0, -thickness * 1.5]]
) ), knots);
);
difference() { difference() {
union() { union() {