'Declaration
 
Public Overloads Shared Function Determinant( _
   ByVal p1 As NPoint, _
   ByVal p2 As NPoint, _
   ByVal p3 As NPoint _
) As System.Integer

'Usage
 
Dim p1 As NPoint
Dim p2 As NPoint
Dim p3 As NPoint
Dim value As System.Integer
 
value = NGeometry2D.Determinant(p1, p2, p3)

public static System.int Determinant( 
   NPoint p1,
   NPoint p2,
   NPoint p3
)

Parameters

p1

p2

p3

This method calculates the determinant: | p1.x p1.y 1 | | p2.x p2.y 1 | | p3.x p3.y 1 | Which is actually the signed area of the triangle formed by these 3 points.

Three points are a counter-clockwise turn if Determinant > 0, clockwise if Determinant < 0, and collinear if Determinant = 0.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

NGeometry2D Class
NGeometry2D Members
Overload List