From 3f499ca32d3102cfc7af79d37b34ef7d8c1d2e3a Mon Sep 17 00:00:00 2001 From: Justin Lin Date: Thu, 29 Jul 2021 15:24:19 +0800 Subject: [PATCH] round-robin edges --- src/experimental/tile_w2e.scad | 33 ++++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-) diff --git a/src/experimental/tile_w2e.scad b/src/experimental/tile_w2e.scad index 21ee132c..c86b42b4 100644 --- a/src/experimental/tile_w2e.scad +++ b/src/experimental/tile_w2e.scad @@ -2,42 +2,49 @@ function tile_w2e(rows, columns, mask, seed) = let( + y_range = [0:rows - 1], + x_range = [0:columns - 1], + /* + 1 | + |___ + (x,y) 0 + */ edges = is_undef(seed) ? [ - for(y = [0:rows]) + for(y = y_range) [ - for(x = [0:columns]) + for(x = x_range) let(rs = rands(0, 1, 2)) [round(rs[0]), round(rs[1])] ] ] : [ - for(y = [0:rows]) + for(y = y_range) [ - for(x = [0:columns]) + for(x = x_range) let(rs = rands(0, 1, 2, seed + y * columns + x)) [round(rs[0]), round(rs[1])] ] ], m = is_undef(mask) ? [ - for(y = [0:rows - 1]) - [for(x = [0:columns - 1]) 1] + for(y = y_range) + [for(x = x_range) 1] ] : [ for(y = rows - 1; y > -1; y = y - 1) - [for(x = [0:columns - 1]) mask[y][x]] + [for(x = x_range) mask[y][x]] ], /* 1 - . － . + . － . 8 | | 2 - . － . + . － . 4 */ tiles = [ - for(y = [0:rows - 1]) - for(x = [0:columns - 1]) + for(y = y_range) + for(x = x_range) if(m[y][x] == 1) [x, y, - (edges[y + 1][x][0] == 1 ? 1 : 0) + - (edges[y][x + 1][1] == 1 ? 2 : 0) + + (edges[(y + 1) % rows][x][0] == 1 ? 1 : 0) + + (edges[y][(x + 1) % columns][1] == 1 ? 2 : 0) + (edges[y][x][0] == 1 ? 4 : 0) + (edges[y][x][1] == 1 ? 8 : 0) ]