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refactor

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This commit is contained in:
Justin Lin
2022-05-04 15:00:09 +08:00
parent 61fef89bfd
commit bc6288f5d2
1 changed files with 25 additions and 32 deletions
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57
src/__comm__/__half_trapezium.scad
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@@ -1,61 +1,54 @@
use <__frags.scad>;
use <__pie_for_rounding.scad>;
function __tr__corner_t_leng_lt_zero(frags, t_sector_angle, l1, l2, h, round_r) =
let(t_height = tan(t_sector_angle) * l1 - round_r / sin(90 - t_sector_angle) - h / 2)
function __tr__corner_t_leng_lt_zero(frags, t_sector_angle, L, h, round_r) =
let(off = [0, tan(t_sector_angle) * L - round_r / sin(90 - t_sector_angle) - h / 2])
[
for(pt = __pie_for_rounding(round_r, 90 - t_sector_angle, 90, frags * t_sector_angle / 180))
[pt.x, pt.y + t_height]
pt + off
];
function __tr_corner_t_leng_gt_or_eq_zero(frags, t_sector_angle, t_leng, h, round_r) =
let(offset_y = h / 2 - round_r)
let(off = [t_leng, h / 2 - round_r])
[
for(pt = __pie_for_rounding(round_r, 90 - t_sector_angle, 90, frags * t_sector_angle / 360))
[pt.x + t_leng, pt.y + offset_y]
pt + off
];
function __tr_corner(frags, b_ang, l1, l2, h, round_r) =
let(t_leng = l2 - round_r * tan(b_ang / 2))
function __tr_corner(frags, b_ang, L01, h, round_r) =
let(t_leng = L01[1] - round_r * tan(b_ang / 2))
t_leng >= 0 ?
__tr_corner_t_leng_gt_or_eq_zero(frags, b_ang, t_leng, h, round_r) :
__tr__corner_t_leng_lt_zero(frags, b_ang, l1, l2, h, round_r);
__tr__corner_t_leng_lt_zero(frags, b_ang, L01[0], h, round_r);
function __tr__corner_b_leng_lt_zero(frags, b_sector_angle, l1, l2, h, round_r) =
let(
reversed = __tr__corner_t_leng_lt_zero(frags, b_sector_angle, l2, l1, h, round_r),
leng = len(reversed)
)
function __tr__corner_b_leng_lt_zero(frags, b_sector_a, L, h, round_r) =
let(reversed = __tr__corner_t_leng_lt_zero(frags, b_sector_a, L, h, round_r))
[
for(i = [0:leng - 1])
let(pt = reversed[leng - 1 - i])
[pt.x, -pt.y]
for(i = len(reversed) - 1; i > -1; i = i - 1)
let(pt = reversed[i])
[pt.x, -pt.y]
];
function __br_corner_b_leng_gt_or_eq_zero(frags, b_sector_angle, l1, l2, b_leng, h, round_r) =
let(half_h = h / 2)
function __br_corner_b_leng_gt_or_eq_zero(frags, b_sector_a, b_leng, h, round_r) =
let(off = [b_leng, round_r - h / 2])
[
for(pt = __pie_for_rounding(round_r, -90, -90 + b_sector_angle, frags * b_sector_angle / 360))
[pt.x + b_leng, pt.y + round_r - half_h]
for(pt = __pie_for_rounding(round_r, -90, -90 + b_sector_a, frags * b_sector_a / 360))
pt + off
];
function __br_corner(frags, b_ang, l1, l2, h, round_r) =
let(b_leng = l1 - round_r / tan(b_ang / 2))
function __br_corner(frags, b_ang, L01, h, round_r) =
let(b_leng = L01[0] - round_r / tan(b_ang / 2), b_sector_a = 180 - b_ang)
b_leng >= 0 ?
__br_corner_b_leng_gt_or_eq_zero(frags, 180 - b_ang, l1, l2, b_leng, h, round_r) :
__tr__corner_b_leng_lt_zero(frags, 180 - b_ang, l1, l2, h, round_r);
__br_corner_b_leng_gt_or_eq_zero(frags, b_sector_a, b_leng, h, round_r) :
__tr__corner_b_leng_lt_zero(frags, b_sector_a, L01[1], h, round_r);
function __half_trapezium(length, h, round_r) =
let(
is_flt = is_num(length),
l1 = is_flt ? length : length[0],
l2 = is_flt ? length : length[1],
L01 = is_num(length) ? [length, length] : length,
frags = __frags(round_r),
b_ang = atan2(h, l1 - l2),
br_corner = __br_corner(frags, b_ang, l1, l2, h, round_r),
tr_corner = __tr_corner(frags, b_ang, l1, l2, h, round_r)
b_ang = atan2(h, L01[0] - L01[1])
)
concat(
br_corner,
tr_corner
__br_corner(frags, b_ang, L01, h, round_r),
__tr_corner(frags, b_ang, L01, h, round_r)
);