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add mz_hex_walls

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This commit is contained in:
Justin Lin
2020-10-03 21:16:13 +08:00
parent 22208d54c6
commit 23c86b1ec2
2 changed files with 102 additions and 0 deletions
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49
src/maze/_impl/_mz_hex_walls.scad Normal file
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use <maze/mz_get.scad>;
function _get_x(block) = mz_get(block, "x");
function _get_y(block) = mz_get(block, "y");
function _get_wall_type(block) = mz_get(block, "w");
function _is_upper_wall(block) = _get_wall_type(block) == "UPPER_WALL";
function _is_right_wall(block) = _get_wall_type(block) == "RIGHT_WALL";
function _is_upper_right_wall(block) = _get_wall_type(block) == "UPPER_RIGHT_WALL";
function _cell_position(cell_radius, x_cell, y_cell) =
let(
grid_h = 2 * cell_radius * sin(60),
grid_w = cell_radius + cell_radius * cos(60)
)
[grid_w * x_cell, grid_h * y_cell + (x_cell % 2 == 0 ? 0 : grid_h / 2), 0];
function _hex_seg(cell_radius, begin, end) = [for(a = [begin:60:end])
[cell_radius * cos(a), cell_radius * sin(a)]];
function _upper_right(cell_radius) = _hex_seg(cell_radius, 0, 60);
function _upper(cell_radius) = _hex_seg(cell_radius, 60, 120);
function _upper_left(cell_radius) = _hex_seg(cell_radius, 120, 180);
function _down_left(cell_radius) = _hex_seg(cell_radius, 180, 240);
function _down(cell_radius) = _hex_seg(cell_radius, 240, 300);
function _down_right(cell_radius) = _hex_seg(cell_radius, 300, 360);
function _right_wall(cell_radius, x_cell) =
(x_cell % 2 != 0) ? _down_right(cell_radius) : _upper_right(cell_radius);
function _row_wall(cell_radius, x_cell, y_cell) =
x_cell % 2 != 0 ? [_upper_right(cell_radius), _upper_left(cell_radius)] : [_down_right(cell_radius)];
function _build_cell(cell_radius, block) =
let(
x = _get_x(block) - 1,
y = _get_y(block) - 1,
walls = concat(
_row_wall(cell_radius, x, y),
[_is_upper_wall(block) || _is_upper_right_wall(block) ? _upper(cell_radius) : []],
[_is_right_wall(block) || _is_upper_right_wall(block) ? _right_wall(cell_radius, x) : []]
)
)
[
for(wall = walls)
if(wall != [])
[for(p = wall)
_cell_position(cell_radius, x, y) + p]
];

53
src/maze/mz_hex_walls.scad Normal file
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use <_impl/_mz_hex_walls.scad>;
function mz_hex_walls(blocks, rows, columns, cell_radius, wall_thickness, left_border = true, bottom_border = true) =
let(
walls = [
for(block = blocks)
for(wall = _build_cell(cell_radius, block))
wall
],
left_pair_walls = left_border ? [
for(y = [0:rows - 1])
let(
cell_p = _cell_position(cell_radius, 0, y),
walls1 = _upper_left(cell_radius),
walls2 = _down_left(cell_radius)
)
[
[walls1[0] + cell_p, walls1[1] + cell_p],
[walls2[0] + cell_p, walls2[1] + cell_p]
]
] : [],
left_border_walls = [
for(pair = left_pair_walls)
for(wall = pair)
wall
],
bottom_pair_walls = bottom_border ? [
for(x = [0:columns - 1])
let(
cell_p = _cell_position(cell_radius, x, 0),
walls1 = _down(cell_radius),
walls2 = [
for(pair = (x % 2 == 0 ? [_down_left(cell_radius), _down_right(cell_radius)] : []))
for(wall = pair)
wall
]
)
walls2 == [] ?
[
[walls1[0] + cell_p, walls1[1] + cell_p]
] :
[
[walls1[0] + cell_p, walls1[1] + cell_p],
[walls2[0] + cell_p, walls2[1] + cell_p]
]
] : [],
bottom_border_walls = [
for(pair = bottom_pair_walls)
for(wall = pair)
wall
]
)
concat(walls, left_border_walls, bottom_border_walls);