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public function cutPoly($business_id)
    {
        $done = [];
        $red = Isochrone::where('business_id', $business_id)->where('color', 'red')->selectRaw('id, color, ST_AsText(path) as p_path')->get()->first();
        $blue = Isochrone::where('business_id', $business_id)->where('color', 'blue')->selectRaw('id, color, ST_AsText(path) as p_path')->get()->first();
        $green = Isochrone::where('business_id', $business_id)->where('color', 'green')->selectRaw('id, color, ST_AsText(path) as p_path')->get()->first();
        if ($red && $blue) {
            if (!$red['p_path'] || !$blue['p_path']) {
                $done['red'] = 'already';
            } else {
                $isoString = 'POLYGON((';
                $blue_path = $blue['p_path'];
                $red_path = $red['p_path'];
                if (!array_key_exists('lat', $blue['p_path'][0])) {
                    $blue_path = $blue['p_path'][0];
                }
                if (!array_key_exists('lat', $red['p_path'][0])) {
                    $red_path = $red['p_path'][0];
                }
                $isoString .= implode(',', array_map(function ($entry) {
                        return $entry['lat'] . ' ' . $entry['lng'];
                    }, $red_path))
                . '),('.
                    implode(',', array_map(function ($entry) {
                        return $entry['lat'] . ' ' . $entry['lng'];
                    }, $blue_path))
                    .'))';
                Isochrone::where('business_id', $business_id)->where('color', 'red')->update(['path' => \DB::raw("ST_GeomFromText('$isoString')")]);
                $done['red'] = 'ok';
            }
        } else if ($red && $green) {
            if (!$red['p_path'] || !$green['p_path']) {
                $done['red'] = 'already';
            } else {
                $isoString = 'POLYGON((';
                $green_path = $green['p_path'];
                $red_path = $red['p_path'];
                if (!array_key_exists('lat', $green['p_path'][0])) {
                    $green_path = $green['p_path'][0];
                }
                if (!array_key_exists('lat', $red['p_path'][0])) {
                    $red_path = $red['p_path'][0];
                }
                $isoString .= implode(',', array_map(function ($entry) {
                        return $entry['lat'] . ' ' . $entry['lng'];
                    }, $red_path))
                . '),('.
                    implode(',', array_map(function ($entry) {
                        return $entry['lat'] . ' ' . $entry['lng'];
                    }, $green_path))
                    .'))';
                Isochrone::where('business_id', $business_id)->where('color', 'red')->update(['path' => \DB::raw("ST_GeomFromText('$isoString')")]);
                $done['red'] = 'ok green';
            }
        }
        if ($blue && $green) {
            if (!$blue['p_path'] || !$green['p_path']) {
                $done['blue'] = 'already';
            } else {
                $isoString = 'POLYGON((';
                $green_path = $green['p_path'];
                $blue_path = $blue['p_path'];
                if (!array_key_exists('lat', $green['p_path'][0])) {
                    $green_path = $green['p_path'][0];
                }
                if (!array_key_exists('lat', $blue['p_path'][0])) {
                    $blue_path = $blue['p_path'][0];
                }
                $isoString .= implode(',', array_map(function ($entry) {
                        return $entry['lat'] . ' ' . $entry['lng'];
                    }, $blue_path))
                . '),('.
                    implode(',', array_map(function ($entry) {
                        return $entry['lat'] . ' ' . $entry['lng'];
                    }, $green_path))
                    .'))';
                Isochrone::where('business_id', $business_id)->where('color', 'blue')->update(['path' => \DB::raw("ST_GeomFromText('$isoString')")]);
                $done['blue'] = 'ok';
            }
        }
        return $done;
    }