# isPolyClockwise

Below is a demonstration of the features of the `isPolyClockwise` function

## Contents

```
clear; close all; clc;
```

## Syntax

`[L]=isPolyClockwise(V);`

## Description

This function uses the "signed area" of the polygon to return if its orientation is clockwise L=1 or anti-clockwise L=0.

## Examples

n=25; % Number of points t=linspace(0,2*pi,n+1)'; t=t(1:end-1); % Angles V=[cos(t) sin(t)]; % Polygon vertices

[L]=isPolyClockwise(V) [L]=isPolyClockwise(flipud(V))

L = logical 0 L = logical 1

cFigure; hold on; plotV(V,'b.-','LineWidth',2,'MarkerSize',25) axisGeom; view(2); drawnow;

* GIBBON* www.gibboncode.org

*Kevin Mattheus Moerman*, [email protected]

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License: https://github.com/gibbonCode/GIBBON/blob/master/LICENSE

GIBBON: The Geometry and Image-based Bioengineering add-On. A toolbox for image segmentation, image-based modeling, meshing, and finite element analysis.

Copyright (C) 2006-2023 Kevin Mattheus Moerman and the GIBBON contributors

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