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refactor

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This commit is contained in:
Justin Lin
2021-08-11 08:28:57 +08:00
parent 26a0d7a62e
commit d350362c47
1 changed files with 50 additions and 48 deletions
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98
src/experimental/tile_penrose3.scad
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@@ -1,73 +1,75 @@
use <ptf/ptf_rotate.scad>;
use <hull_polyline2d.scad>;
module tile_penrose3(radius, fn, n) {
// triangle: [type, pa, pb pc], c: false(36) or true(108)
PHI = 1.618033988749895; // golden ratio
function _subdivide(triangles) =
[
for(tri = triangles)
let(
type = tri[0],
a = tri[1],
b = tri[2],
c = tri[3]
)
each (type ? _sub_a1(a, b, c) : _sub_a0(a, b, c))
];
function _sub_a0(a, b, c) =
let(p = a + (b - a) / PHI)
[[false, c, p, b], [true, p, c, a]];
function _sub_a1(a, b, c) =
function _subdivide(triangles) =
[
for(tri = triangles)
let(
q = b + (a - b) / PHI,
r = b + (c - b) / PHI
type = tri[0],
a = tri[1],
b = tri[2],
c = tri[3]
)
[[true, r, c, a], [true, q, r, b], [false, r, q, a]];
function _penrose3(triangles, n, i = 0) =
i == n ? triangles :
_penrose3(_subdivide(triangles), n, i+ 1);
a0 = 360 / fn;
a2 = 180 - a0 * 2;
shape_tri0 = [[0, 0], [radius, 0], ptf_rotate([radius, 0], a0)];
triangles = [
for(i = [0:fn - 1])
let(t = [for(p = shape_tri0) ptf_rotate(p, i * a0)])
i % 2 == 0 ? [false, t[0], t[1], t[2]] : [false, t[0], t[2], t[1]]
each (type ? _sub_a1(a, b, c) : _sub_a0(a, b, c))
];
tris = _penrose3(triangles, n);
function _sub_a0(a, b, c) =
let(
PHI = 1.618033988749895,
p = a + (b - a) / PHI
)
[[false, c, p, b], [true, p, c, a]];
function _sub_a1(a, b, c) =
let(
PHI = 1.618033988749895,
q = b + (a - b) / PHI,
r = b + (c - b) / PHI
)
[[true, r, c, a], [true, q, r, b], [false, r, q, a]];
function _penrose3(triangles, n, i = 0) =
i == n ? triangles :
_penrose3(_subdivide(triangles), n, i+ 1);
function tile_penrose3(n) =
let(
a0 = 360 / $fn,
a2 = 180 - a0 * 2,
shape_tri0 = [[0, 0], [1, 0], ptf_rotate([1, 0], a0)]
)
_penrose3([
for(i = [0:$fn - 1])
let(t = [for(p = shape_tri0) ptf_rotate(p, i * a0)])
i % 2 == 0 ? [false, t[0], t[1], t[2]] : [false, t[0], t[2], t[1]]
], n);
module draw(tris) {
for(t = tris) {
color(t[0] ? "white" : "black")
linear_extrude(.5))
polygon([t[2], t[1], t[3]]);
linear_extrude(1)
hull_polyline2d([t[2], t[1], t[3]], .2);
hull_polyline2d([t[2], t[1], t[3]], .1);
}
}
radius = 10;
fn = 12;
$fn = 12;
tile_penrose3(radius, fn, 0);
draw(tile_penrose3(0) * radius);
translate([30, 0])
tile_penrose3(radius, fn, 1);
draw(tile_penrose3(1) * radius);
translate([60, 0])
tile_penrose3(radius, fn, 2);
draw(tile_penrose3(2) * radius);
translate([0, -30])
tile_penrose3(radius, fn, 3);
draw(tile_penrose3(3) * radius);
translate([30, -30])
tile_penrose3(radius, fn, 4);
draw(tile_penrose3(4) * radius);
translate([60, -30])
tile_penrose3(radius, fn, 5);
draw(tile_penrose3(5) * radius);