Back to Aurora Vision Library website
You are here: Start » Function Reference » Path » Polygon Features » PolygonArea
PolygonArea
Header: | AVL.h |
---|---|
Namespace: | avl |
Module: | FoundationBasic |
Computes the area of polygon.
Syntax
C++
C#
void avl::PolygonArea ( const avl::Path& inPolygon, float& outArea )
Parameters
Description
The operation computes the area of a polygon bounded by a closed path. The area is measured in square pixels. As paths in AVS are subpixel-precise, the result may be (and usually is) non-integer.
Note that if the input path is not a valid polygon (i.e. it has at least one self-intersection), the computation may lead to results that are not intuitive.
Examples
Errors
List of possible exceptions:
Error type | Description |
---|---|
DomainError | Open path on input in PolygonArea. |
See Also
- RegionArea – Computes the number of pixels contained in a region.