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refactored

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Justin Lin
2017-05-15 08:46:18 +08:00
parent 91817ff0bb
commit b4aef1195a
1 changed files with 28 additions and 18 deletions
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46
src/__private__/__half_trapezium.scad
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@@ -1,27 +1,37 @@
function __tr_corner(frags, l1, l2, h, round_r) =
let(
t_sector_angle = atan2(h, l1 - l2),
t_leng = l2 - round_r * tan(t_sector_angle / 2),
t_round_frags = frags * t_sector_angle / 360,
half_h = h / 2
)
[
for(pt = __pie_for_rounding(round_r, 90 - t_sector_angle, 90, t_round_frags))
[pt[0] + t_leng, pt[1] + h - round_r - half_h]
];
function __br_corner(frags, l1, l2, h, round_r) =
let(
b_ang = atan2(h, l1 - l2),
b_sector_angle = 180 - b_ang,
b_leng = l1 - round_r / tan(b_ang / 2),
b_round_frags = frags * b_sector_angle / 360,
b_end_angle = -90 + b_sector_angle,
half_h = h / 2
)
[
for(pt = __pie_for_rounding(round_r, -90, b_end_angle, b_round_frags))
[pt[0] + b_leng, pt[1] + round_r - half_h]
];
function __half_trapezium(length, h, round_r) = function __half_trapezium(length, h, round_r) =
let( let(
is_vt = __is_vector(length), is_vt = __is_vector(length),
l1 = is_vt ? length[0] : length, l1 = is_vt ? length[0] : length,
l2 = is_vt ? length[1] : length, l2 = is_vt ? length[1] : length,
frags = __frags(round_r), frags = __frags(round_r),
b_ang = atan2(h, l1 - l2), br_corner = __br_corner(frags, l1, l2, h, round_r),
b_sector_angle = 180 - b_ang, tr_corner = __tr_corner(frags, l1, l2, h, round_r)
b_leng = l1 - round_r / tan(b_ang / 2),
b_round_frags = frags * b_sector_angle / 360,
b_end_angle = -90 + b_sector_angle,
t_sector_angle = b_ang,
t_leng = l2 - round_r * tan(t_sector_angle / 2),
t_round_frags = frags * t_sector_angle / 360,
half_h = h / 2,
br_corner = [
for(pt = __pie_for_rounding(round_r, -90, b_end_angle, b_round_frags))
[pt[0] + b_leng, pt[1] + round_r - half_h]
],
tr_corner = [
for(pt = __pie_for_rounding(round_r, 90 - t_sector_angle, 90, t_round_frags))
[pt[0] + t_leng, pt[1] + h - round_r - half_h]
]
) )
concat( concat(
br_corner, br_corner,