howardjones/network-weathermap

<?php
require_once 'lib/all.php';

// EDIT THESE!
// Which file to read in (the big map)
$input_mapfile = "configs/09-test.conf";
// how big do you want your new maps to be?
$desired_width = 640;
$desired_height = 480;

$map = new WeatherMap;
$map->ReadConfig($input_mapfile);

print "Size of source is " . $map->width . "x" . $map->height . "\n";

$rows = intval($map->height / $desired_height) + 1;
$cols = intval($map->width / $desired_width) + 1;
$num = $rows * $cols;


if ($num == 1) {
    print "This map is already within your constraints.\n";
    return;
}

print "We'll need to make $num ($cols x $rows) smaller maps\n";
for ($row = 0; $row < $rows; $row++) {
    for ($col = 0; $col < $cols; $col++) {
        print "=====================================\nMaking the submap $col,$row\n";
        $min_x = $col * $desired_width;
        $min_y = $row * $desired_height;
        $max_x = ($col + 1) * $desired_width;
        $max_y = ($row + 1) * $desired_height;
        print "We'll read the map, and throw out everything not inside ($min_x,$min_y)->($max_x,$max_y)\n";

        $map = new WeatherMap;
        $map->ReadConfig($input_mapfile);

        foreach ($map->nodes as $node) {
            $target = $node->name;
            if (($node->x < $min_x) || ($node->x >= $max_x) || ($node->y < $min_y) || ($node->y >= $max_y)) {
                print "$target falls outside of this map. Deleting it and links that use it.\n";

                foreach ($map->links as $link) {
                    if (($target == $link->a->name) || ($target == $link->b->name)) {
                        print "link $link->name uses it. Deleted.\n";
                        unset($map->links[$link->name]);
                    }
                }
                unset($map->nodes[$target]);
            } else {
                print "$target is OK, but will be moved for the new map from " . $node->x . "," . $node->y . " to ";
                $x = $node->x;
                $y = $node->y;

                $x = $node->x - $min_x;
                $y = $node->y - $min_y;
                $map->nodes[$target]->x = $x;
                $map->nodes[$target]->y = $y;
                print "$x,$y\n";
            }
        }
        $output_mapfile = $input_mapfile . "-" . $row . "-" . $col . ".conf";
        $map->width = $desired_width;
        $map->height = $desired_height;
        $map->background = "";
        $map->WriteConfig($output_mapfile);
    }
}