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Code Issues Releases Wiki Activity

refactor

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This commit is contained in:
Justin Lin
2020-02-28 15:12:19 +08:00
parent 67c10c3fbb
commit 0ce3688981
2 changed files with 65 additions and 37 deletions
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48
examples/hollow_out/hollow_torus_knot.scad
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@@ -1,20 +1,25 @@
use <torus_knot.scad>;
use <cross_sections.scad>;
use <util/rand.scad>;
use <circle_path.scad>;
use <shape_pentagram.scad>;
use <hull_polyline3d.scad>;
use <experimental/tri_bisectors.scad>;
use <experimental/hollow_out_sweep.scad>;
p = 2;
q = 3;
phi_step = 0.075;
thickness = .1;
shape = shape_pentagram(.5); // circle_path(radius = .5, $fn = 12);
section_style = "STAR"; // [STAR, CIRCLE]
line_style = "HULL_LINES"; // [LINES, HULL_LINES]
hollow_out_torus_knot(shape, p, q, phi_step, thickness, $fn = 4);
if(section_style == "STAR") {
hollow_out_torus_knot(shape_pentagram(.5), p, q, phi_step, thickness, line_style);
}
else {
hollow_out_torus_knot(circle_path(radius = .5, $fn = 12), p, q, phi_step, thickness, line_style);
}
module hollow_out_torus_knot(shape, p, q, phi_step, thickness) {
module hollow_out_torus_knot(shape, p, q, phi_step, thickness, line_style) {
function angy_angz(p1, p2) =
let(
dx = p2[0] - p1[0],
@@ -38,39 +43,8 @@ module hollow_out_torus_knot(shape, p, q, phi_step, thickness) {
)
cross_sections(shape, path, concat([angles[0]], angles));
function rects(sects) =
let(
sects_leng = len(sects),
shape_pt_leng = len(sects[0])
)
[
for(i = [0:sects_leng - 1])
let(
sect1 = sects[i],
sect2 = sects[(i + 1) % sects_leng]
)
for(j = [0:shape_pt_leng - 1])
let(k = (j + 1) % shape_pt_leng)
[sect1[j], sect1[k], sect2[k], sect2[j]]
];
function rand_tris(rect) =
let(
i = ceil(rand() * 10) % 2
)
i == 0 ?
[[rect[0], rect[1], rect[2]], [rect[0], rect[2], rect[3]]] :
[[rect[1], rect[2], rect[3]], [rect[1], rect[3], rect[0]]];
pts = torus_knot(p, q, phi_step);
sects = sects_by_path(shape, pts);
for(rect = rects(sects)) {
for(tri = rand_tris(rect)) {
for(line = tri_bisectors(tri)) {
hull_polyline3d(line, thickness = thickness);
}
}
}
hollow_out_sweep(concat(sects, [sects[0]]), thickness, line_style);
}

54
src/experimental/hollow_out_sweep.scad Normal file
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@@ -0,0 +1,54 @@
use <util/rand.scad>;
use <line3d.scad>;
use <hull_polyline3d.scad>;
use <experimental/tri_bisectors.scad>;
// style: LINES or HULL_LINES
module hollow_out_sweep(sections, thickness, style = "LINES") {
function rects(sects) =
let(
sects_leng = len(sections),
shape_pt_leng = len(sections[0])
)
[
for(i = [0:sects_leng - 2])
let(
sect1 = sects[i],
sect2 = sects[i + 1]
)
for(j = [0:shape_pt_leng - 1])
let(k = (j + 1) % shape_pt_leng)
[sect1[j], sect1[k], sect2[k], sect2[j]]
];
function rand_tris(rect) =
let(
i = ceil(rand() * 10) % 2
)
i == 0 ?
[[rect[0], rect[1], rect[2]], [rect[0], rect[2], rect[3]]] :
[[rect[1], rect[2], rect[3]], [rect[1], rect[3], rect[0]]];
lines = [
for(rect = rects(sections))
for(tri = rand_tris(rect))
each tri_bisectors(tri)
];
if(style == "LINES") {
for(line = lines) {
line3d(
p1 = line[0],
p2 = line[1],
thickness = thickness,
p1Style = "CAP_SPHERE",
p2Style = "CAP_SPHERE"
);
}
}
else if(style == "HULL_LINES") {
for(line = lines) {
hull_polyline3d(line, thickness = thickness);
}
}
}