69 lines
1.6 KiB
PHP
69 lines
1.6 KiB
PHP
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<?php
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$input = file_get_contents('input.txt');
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const TRANSPARENT = 2;
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const WHITE = 1;
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const BLACK = 0;
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const WIDTH = 25;
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const HEIGHT = 6;
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$area = WIDTH * HEIGHT;
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function flatten(array $array) {
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$return = [];
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array_walk_recursive($array, static function($a) use (&$return) { $return[] = $a; });
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return implode('', $return);
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}
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$layers = array_map(static function($layer) {
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return str_split($layer, WIDTH);
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}, str_split($input, $area));
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$final_image = array_fill(0, HEIGHT, []);
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$final_image = array_map(static function() {
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return array_fill(0, WIDTH, TRANSPARENT);
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}, $final_image);
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foreach ($layers as $layer) {
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foreach ($layer as $row => $line) {
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$numbers = str_split($line);
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foreach ($numbers as $col => $number) {
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if ($final_image[$row][$col] == TRANSPARENT) {
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$final_image[$row][$col] = $number;
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}
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}
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}
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}
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$image = new Imagick();
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$white = new \ImagickPixel('#FFFFFF');
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$black = new \ImagickPixel('#000000');
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$image->newImage(WIDTH * 10, HEIGHT * 10, 'none');
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$image->setImageFormat('png');
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$draw = new \ImagickDraw();
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foreach ($final_image as $j => $row) {
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foreach ($row as $i => $cell) {
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$color = 'none';
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if ($cell == WHITE) {
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$color = $white;
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}
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if ($cell == BLACK) {
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$color = $black;
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}
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$draw->setFillColor($color);
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$draw->rectangle(10 * $i, 10 * $j, 10 * $i + 10, 10 * $j + 10);
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}
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}
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$image->drawImage($draw);
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header("Content-Type: image/png");
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$data = $image->getImageBlob();
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file_put_contents('part_2.png', $data);
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