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# AVL.RegionConvexity

Computes the area of a region divided by area of its convex hull.

Namespace: AvlNet AVL.NET.dll

### Syntax

C++
C#

public static void RegionConvexity
(
AvlNet.Region inRegion,
out float outConvexity
)


### Parameters

Name Type Range Default Description
inRegionAvlNet.RegionInput region.
outConvexityfloat

### Description

Convexity is a measure of how close a region is to being convex. Convex regions have convexity equal to 1.0, while the more concave the region is, the closer to 0.0 is its convexity.

Mathematically, the convexity is calculated as follows:

### Examples

Area of the sample region (on the left) equals to 2345, while area of its convex hull (on the right) equals to 40357, so the RegionConvexity run on the sample region would produce the result 2345/40357 = 0.058 .

### Errors

List of possible exceptions:

Error type Description
DomainError Empty region on input in RegionConvexity.