Determines whether the point is inside contour, outside, or lies on an edge (or coinsides with a vertex). It returns positive, negative or zero value, correspondingly

Namespace:  Emgu.CV
Assembly:  Emgu.CV (in Emgu.CV.dll) Version: 2.1.0.649 (2.1.0.649)

Syntax

         
 C#  Visual Basic  Visual C++ 
public static double cvPointPolygonTest(
	IntPtr contour,
	PointF pt,
	int measureDist
)
Public Shared Function cvPointPolygonTest ( _
	contour As IntPtr, _
	pt As PointF, _
	measureDist As Integer _
) As Double
public:
static double cvPointPolygonTest(
	IntPtr contour, 
	PointF pt, 
	int measureDist
)

Parameters

contour
IntPtr
Input contour
pt
PointF
The point tested against the contour
measureDist
Int32
If != 0, the function estimates distance from the point to the nearest contour edge

Return Value

When measureDist = 0, the return value is >0 (inside), <0 (outside) and =0 (on edge), respectively. When measureDist != 0, it is a signed distance between the point and the nearest contour edge

See Also