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refactor

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Justin Lin
2019-09-28 09:58:30 +08:00
parent 3d3ad1151a
commit ea401ce009
1 changed files with 20 additions and 21 deletions
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41
examples/sierpinski_pyramid.scad
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@@ -1,40 +1,39 @@
include <hull_polyline3d.scad>; include <hull_polyline3d.scad>;
width = 100; side_leng = 100;
min_width = 5; min_len = 5;
thickness = 2.5; thickness = 2.5;
$fn = 4;
sierpinski_pyramid(width, min_width, thickness); sierpinski_pyramid(side_leng, min_len, thickness, $fn = 4);
module sierpinski_pyramid(width, min_width, thickness) { module sierpinski_pyramid(side_leng, min_len, thickness) {
pyramid_frame(width, thickness); pyramid_frame(side_leng, thickness);
if(width > min_width){ if(side_leng > min_len){
half_w = width / 2; half_len = side_leng / 2;
h = half_w * 0.707107; h = half_len * 0.707107;
pt = [width / 4, width / 4, 0]; pt = [side_leng / 4, side_leng / 4, 0];
for(i=[0:3]) { for(i=[0:3]) {
rotate([0, 0, i * 90]) rotate([0, 0, i * 90])
translate(pt) translate(pt)
sierpinski_pyramid(half_w, min_width, thickness); sierpinski_pyramid(half_len, min_len, thickness);
} }
translate([0, 0, h]) translate([0, 0, h])
sierpinski_pyramid(half_w, min_width, thickness); sierpinski_pyramid(half_len, min_len, thickness);
} }
} }
module pyramid_frame(width, thickness) { module pyramid_frame(side_leng, thickness) {
half_w = width / 2; half_len = side_leng / 2;
h = half_w * 1.414214; h = half_len * 1.414214;
tri_pts = [[0, 0, h], [half_w, half_w, 0], [half_w, -half_w, 0], [0, 0, h]]; tri_pts = [[0, 0, h], [half_len, half_len, 0], [half_len, -half_len, 0], [0, 0, h]];
line_pts = [[half_w, half_w, 0], [-half_w, half_w, 0]]; line_pts = [[half_len, half_len, 0], [-half_len, half_len, 0]];
hull_polyline3d(tri_pts, thickness = thickness); hull_polyline3d(tri_pts, thickness);
mirror([1, 0, 0]) mirror([1, 0, 0])
hull_polyline3d(tri_pts, thickness = thickness); hull_polyline3d(tri_pts, thickness);
hull_polyline3d(line_pts, thickness = thickness); hull_polyline3d(line_pts, thickness);
mirror([0, 1, 0]) mirror([0, 1, 0])
hull_polyline3d(line_pts, thickness = thickness); hull_polyline3d(line_pts, thickness);
} }