mirror of
https://github.com/JustinSDK/dotSCAD.git
synced 2025-08-31 10:11:53 +02:00
move files
This commit is contained in:
Justin Lin
278
examples/maze/square_maze.scad
Normal file
278
examples/maze/square_maze.scad
Normal file
@@ -0,0 +1,278 @@
|
||||
NO_WALL = 0;
|
||||
UPPER_WALL = 1;
|
||||
RIGHT_WALL = 2;
|
||||
UPPER_RIGHT_WALL = 3;
|
||||
|
||||
function block_data(x, y, wall_type, visited) = [x, y, wall_type, visited];
|
||||
function get_x(block_data) = block_data[0];
|
||||
function get_y(block_data) = block_data[1];
|
||||
function get_wall_type(block_data) = block_data[2];
|
||||
|
||||
// create a starting maze for being visited later.
|
||||
function starting_maze(rows, columns) = [
|
||||
for(y = [1:rows])
|
||||
for(x = [1:columns])
|
||||
block_data(
|
||||
x, y,
|
||||
// all blocks have upper and right walls
|
||||
UPPER_RIGHT_WALL,
|
||||
// unvisited
|
||||
false
|
||||
)
|
||||
];
|
||||
|
||||
// find out the index of a block with the position (x, y)
|
||||
function indexOf(x, y, maze, i = 0) =
|
||||
i > len(maze) ? -1 : (
|
||||
[get_x(maze[i]), get_y(maze[i])] == [x, y] ? i :
|
||||
indexOf(x, y, maze, i + 1)
|
||||
);
|
||||
|
||||
// is (x, y) visited?
|
||||
function visited(x, y, maze) = maze[indexOf(x, y, maze)][3];
|
||||
|
||||
// is (x, y) visitable?
|
||||
function visitable(x, y, maze, rows, columns) =
|
||||
y > 0 && y <= rows && // y bound
|
||||
x > 0 && x <= columns && // x bound
|
||||
!visited(x, y, maze); // unvisited
|
||||
|
||||
// setting (x, y) as being visited
|
||||
function set_visited(x, y, maze) = [
|
||||
for(b = maze)
|
||||
[x, y] == [get_x(b), get_y(b)] ?
|
||||
[x, y, get_wall_type(b), true] : b
|
||||
];
|
||||
|
||||
// 0(right)、1(upper)、2(left)、3(down)
|
||||
function rand_dirs() =
|
||||
[
|
||||
[0, 1, 2, 3],
|
||||
[0, 1, 3, 2],
|
||||
[0, 2, 1, 3],
|
||||
[0, 2, 3, 1],
|
||||
[0, 3, 1, 2],
|
||||
[0, 3, 2, 1],
|
||||
[1, 0, 2, 3],
|
||||
[1, 0, 3, 2],
|
||||
[1, 2, 0, 3],
|
||||
[1, 2, 3, 0],
|
||||
[1, 3, 0, 2],
|
||||
[1, 3, 2, 0],
|
||||
[2, 0, 1, 3],
|
||||
[2, 0, 3, 1],
|
||||
[2, 1, 0, 3],
|
||||
[2, 1, 3, 0],
|
||||
[2, 3, 0, 1],
|
||||
[2, 3, 1, 0],
|
||||
[3, 0, 1, 2],
|
||||
[3, 0, 2, 1],
|
||||
[3, 1, 0, 2],
|
||||
[3, 1, 2, 0],
|
||||
[3, 2, 0, 1],
|
||||
[3, 2, 1, 0]
|
||||
][round(rands(0, 24, 1)[0])];
|
||||
|
||||
// get x value by dir
|
||||
function next_x(x, dir, columns, circular) =
|
||||
let(nx = x + [1, 0, -1, 0][dir])
|
||||
circular ?
|
||||
nx < 1 ? nx + columns : (
|
||||
nx > columns ? nx % columns : nx
|
||||
)
|
||||
:
|
||||
nx;
|
||||
|
||||
// get y value by dir
|
||||
function next_y(y, dir, rows, circular) =
|
||||
let(ny = y + [0, 1, 0, -1][dir])
|
||||
circular ?
|
||||
ny < 1 ? ny + rows : (
|
||||
ny > rows ? ny % rows : ny
|
||||
)
|
||||
:
|
||||
ny;
|
||||
|
||||
// go right and carve the right wall
|
||||
function go_right_from(x, y, maze) = [
|
||||
for(b = maze) [get_x(b), get_y(b)] == [x, y] ? (
|
||||
get_wall_type(b) == UPPER_RIGHT_WALL ?
|
||||
[x, y, UPPER_WALL, visited(x, y, maze)] :
|
||||
[x, y, NO_WALL, visited(x, y, maze)]
|
||||
|
||||
) : b
|
||||
];
|
||||
|
||||
// go up and carve the upper wall
|
||||
function go_up_from(x, y, maze) = [
|
||||
for(b = maze) [get_x(b), get_y(b)] == [x, y] ? (
|
||||
get_wall_type(b) == UPPER_RIGHT_WALL ?
|
||||
[x, y, RIGHT_WALL, visited(x, y, maze)] :
|
||||
[x, y, NO_WALL, visited(x, y, maze)]
|
||||
|
||||
) : b
|
||||
];
|
||||
|
||||
// go left and carve the right wall of the left block
|
||||
function go_left_from(x, y, maze, columns) =
|
||||
let(
|
||||
x_minus_one = x - 1,
|
||||
nx = x_minus_one < 1 ? x_minus_one + columns : x_minus_one
|
||||
)
|
||||
[
|
||||
for(b = maze) [get_x(b), get_y(b)] == [nx, y] ? (
|
||||
get_wall_type(b) == UPPER_RIGHT_WALL ?
|
||||
[nx, y, UPPER_WALL, visited(nx, y, maze)] :
|
||||
[nx, y, NO_WALL, visited(nx, y, maze)]
|
||||
) : b
|
||||
];
|
||||
|
||||
// go down and carve the upper wall of the down block
|
||||
function go_down_from(x, y, maze, rows) = [
|
||||
let(
|
||||
y_minus_one = y - 1,
|
||||
ny = y_minus_one < 1 ? y_minus_one + rows : y_minus_one
|
||||
)
|
||||
for(b = maze) [get_x(b), get_y(b)] == [x, ny] ? (
|
||||
get_wall_type(b) == UPPER_RIGHT_WALL ?
|
||||
[x, ny, RIGHT_WALL, visited(x, ny, maze)] :
|
||||
[x, ny, NO_WALL, visited(x, ny, maze)]
|
||||
) : b
|
||||
];
|
||||
|
||||
// 0(right)、1(upper)、2(left)、3(down)
|
||||
function try_block(dir, x, y, maze, rows, columns) =
|
||||
dir == 0 ? go_right_from(x, y, maze) : (
|
||||
dir == 1 ? go_up_from(x, y, maze) : (
|
||||
dir == 2 ? go_left_from(x, y, maze, columns) :
|
||||
go_down_from(x, y, maze, rows) // dir is 3
|
||||
|
||||
)
|
||||
);
|
||||
|
||||
|
||||
// find out visitable dirs from (x, y)
|
||||
function visitable_dirs_from(x, y, maze, rows, columns, x_circular, y_circular) = [
|
||||
for(dir = [0, 1, 2, 3])
|
||||
if(visitable(next_x(x, dir, columns, x_circular), next_y(y, dir, rows, y_circular), maze, rows, columns))
|
||||
dir
|
||||
];
|
||||
|
||||
// go maze from (x, y)
|
||||
function go_maze(x, y, maze, rows, columns, x_circular = false, y_circular = false) =
|
||||
// have visitable dirs?
|
||||
len(visitable_dirs_from(x, y, maze, rows, columns, x_circular, y_circular)) == 0 ?
|
||||
set_visited(x, y, maze) // road closed
|
||||
: walk_around_from(
|
||||
x, y,
|
||||
rand_dirs(),
|
||||
set_visited(x, y, maze),
|
||||
rows, columns,
|
||||
x_circular, y_circular
|
||||
);
|
||||
|
||||
// try four directions
|
||||
function walk_around_from(x, y, dirs, maze, rows, columns, x_circular, y_circular, i = 4) =
|
||||
// all done?
|
||||
i > 0 ?
|
||||
// not yet
|
||||
walk_around_from(x, y, dirs,
|
||||
// try one direction
|
||||
try_routes_from(x, y, dirs[4 - i], maze, rows, columns, x_circular, y_circular),
|
||||
rows, columns,
|
||||
x_circular, y_circular,
|
||||
i - 1)
|
||||
: maze;
|
||||
|
||||
function try_routes_from(x, y, dir, maze, rows, columns, x_circular, y_circular) =
|
||||
// is the dir visitable?
|
||||
visitable(next_x(x, dir, columns, x_circular), next_y(y, dir, rows, y_circular), maze, rows, columns) ?
|
||||
// try the block
|
||||
go_maze(
|
||||
next_x(x, dir, columns, x_circular), next_y(y, dir, rows, y_circular),
|
||||
try_block(dir, x, y, maze, rows, columns),
|
||||
rows, columns,
|
||||
x_circular, y_circular
|
||||
)
|
||||
// road closed so return maze directly
|
||||
: maze;
|
||||
|
||||
module build_square_maze(rows, columns, blocks, block_width, wall_thickness, left_border = true, bottom_border = true) {
|
||||
module build_block(wall_type, block_width, wall_thickness) {
|
||||
if(wall_type == UPPER_WALL || wall_type == UPPER_RIGHT_WALL) {
|
||||
// draw a upper wall
|
||||
line2d(
|
||||
[0, block_width], [block_width, block_width], wall_thickness
|
||||
);
|
||||
}
|
||||
|
||||
if(wall_type == RIGHT_WALL || wall_type == UPPER_RIGHT_WALL) {
|
||||
// draw a right wall
|
||||
line2d(
|
||||
[block_width, block_width], [block_width, 0], wall_thickness
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
for(block = blocks) {
|
||||
// move a block to a right position.
|
||||
translate([get_x(block) - 1, get_y(block) - 1] * block_width)
|
||||
build_block(
|
||||
get_wall_type(block),
|
||||
block_width,
|
||||
wall_thickness
|
||||
);
|
||||
}
|
||||
|
||||
if(left_border) {
|
||||
line2d([0, 0], [0, block_width * rows], wall_thickness);
|
||||
}
|
||||
|
||||
if(bottom_border) {
|
||||
line2d([0, 0], [block_width * columns, 0], wall_thickness);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
function block_walls(block, block_width) =
|
||||
let(
|
||||
loc = [get_x(block) - 1, get_y(block) - 1] * block_width,
|
||||
wall_type = get_wall_type(block),
|
||||
upper_wall = wall_type == UPPER_WALL || wall_type == UPPER_RIGHT_WALL ? [[0, block_width] + loc, [block_width, block_width] + loc] : [],
|
||||
right_wall = wall_type == RIGHT_WALL || wall_type == UPPER_RIGHT_WALL ? [[block_width, block_width] + loc, [block_width, 0] + loc] : []
|
||||
)
|
||||
concat(
|
||||
upper_wall,
|
||||
right_wall
|
||||
);
|
||||
|
||||
function maze_walls(blocks, rows, columns, block_width, left_border = true, bottom_border = true) =
|
||||
let(
|
||||
left_walls = left_border ? [for(y = [0:rows - 1]) [[0, block_width * (y + 1)], [0, block_width * y]]] : [],
|
||||
buttom_walls = bottom_border ? [for(x = [0:columns - 1]) [[block_width * x, 0], [block_width * (x + 1), 0]]] : []
|
||||
)
|
||||
concat(
|
||||
[
|
||||
for(block = blocks)
|
||||
let(pts = block_walls(block, block_width))
|
||||
if(pts != []) pts
|
||||
]
|
||||
, left_walls, buttom_walls
|
||||
);
|
||||
|
||||
function y_twist(walls, angle, rows, columns, block_width) =
|
||||
let(
|
||||
x_offset = columns * block_width / 2,
|
||||
x_centered = [
|
||||
for(wall_pts = walls)
|
||||
[for(pt = wall_pts) [pt[0], pt[1], 0] + [-x_offset, 0, 0]]
|
||||
],
|
||||
a_step = angle / (rows * block_width)
|
||||
)
|
||||
[
|
||||
for(wall_pts = x_centered)
|
||||
[
|
||||
for(pt = wall_pts)
|
||||
rotate_p(pt, [0, pt[1] * a_step, 0]) + [x_offset, 0, 0]
|
||||
]
|
||||
];
|
||||
Reference in New Issue
Block a user