---
name: "Math::PlanePath::Base::NSEW"
section: "3pm"
platform: "linux"
package: "libmath-planepath-perl"
version: "129-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Math::PlanePath::Base::NSEW"
---

# Math::PlanePath::Base::NSEW(3pm)

## NAME

Math::PlanePath::Base::NSEW -- multi-inheritance mixin for North, South, East, West unit steps

## SYNOPSIS

```
 package Math::PlanePath::Foo;
 use Math::PlanePath;
 use Math::PlanePath::Base::NSEW;
 @ISA = ('Math::PlanePath::Base::NSEW', 'Math::PlanePath');
```

## DESCRIPTION

This is a multi-inheritance mixin for paths which take only steps North, South, East and West by distance 1 each time.  This includes for example the `"SquareSpiral"` and also things like the `"DragonCurve"` or `"CCurve"`.

The following path descriptive methods are provided

```
                        value
    dx_minimum()         -1
    dx_maximum()          1
    dy_minimum()         -1
    dy_maximum()          1
    dsumxy_minimum()     -1
    dsumxy_maximum()      1
    ddiffxy_minimum()    -1
    ddiffxy_maximum()     1
    dir_maximum_dxdy()   0,-1    # maximum South
```

## SEE ALSO

Math::PlanePath, Math::PlanePath::Base::Generic

## HOME PAGE

\<http://user42.tuxfamily.org/math-planepath/index.html\>

## LICENSE

Copyright 2014, 2015, 2016, 2017, 2018, 2019, 2020 Kevin Ryde

This file is part of Math-PlanePath.

Math-PlanePath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.

Math-PlanePath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Math-PlanePath.  If not, see \<http://www.gnu.org/licenses/\>.