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Code Issues Releases Wiki Activity

refactor out pack_one

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This commit is contained in:
Justin Lin
2022-06-03 19:51:37 +08:00
parent 95f69374e4
commit cdd5452618
1 changed files with 24 additions and 23 deletions
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47
src/experimental/tri_circle_packing.scad
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@@ -13,6 +13,26 @@ function c3_a(r1, r2, r3) =
)
acos((b ^ 2 + c ^ 2 - a ^ 2) / (2 * b * c));
function pack_one(min_r, center, sinv, leng_cv, unit_cv, pre_leng, pre_r) =
let(
r2 = r2(sinv, leng_cv, pre_leng),
leng = pre_leng + r2,
r2_ct = center - unit_cv * leng,
r3 = c3_r(pre_r, r2),
a = c3_a(pre_r, r2, r3),
vta = unit_cv * (r3 + r2),
r3_ct1 = r2_ct + ptf_rotate(vta, a),
r3_ct2 = r2_ct + ptf_rotate(vta, -a)
)
r2 > min_r ?
concat(
[[r2_ct, r2], if(r3 > min_r) each [[r3_ct1, r3], [r3_ct2, r3]]],
pack_one(min_r, center, sinv, leng_cv, unit_cv, r2 + leng, r2)
)
: [];
function tri_circle_packing(shape_pts, min_r) =
let(
center = tri_incenter(shape_pts),
@@ -34,31 +54,12 @@ function tri_circle_packing(shape_pts, min_r) =
cc = center - shape_pts[2],
leng_cc = norm(cc),
unit_cc = cc / leng_cc,
sinc = R / leng_cc,
pack_one = function(sinv, leng_cv, unit_cv, pre_leng = R, pre_r = R)
let(
r2 = r2(sinv, leng_cv, pre_leng),
leng = pre_leng + r2,
r2_ct = center - unit_cv * leng,
r3 = c3_r(pre_r, r2),
a = c3_a(pre_r, r2, r3),
vta = unit_cv * (r3 + r2),
r3_ct1 = r2_ct + ptf_rotate(vta, a),
r3_ct2 = r2_ct + ptf_rotate(vta, -a)
)
r2 > min_r ?
concat(
[[r2_ct, r2], if(r3 > min_r) each [[r3_ct1, r3], [r3_ct2, r3]]],
pack_one(sinv, leng_cv, unit_cv, r2 + leng, r2)
)
: []
sinc = R / leng_cc
)
[
[center, R],
each pack_one(sina, leng_ca, unit_ca),
each pack_one(sinb, leng_cb, unit_cb),
each pack_one(sinc, leng_cc, unit_cc),
each pack_one(min_r, center, sina, leng_ca, unit_ca, R, R),
each pack_one(min_r, center, sinb, leng_cb, unit_cb, R, R),
each pack_one(min_r, center, sinc, leng_cc, unit_cc, R, R),
];