ITerrain.GetPointCount Method

Returns the approximate number of points in the terrain within a given area and at a particular pyramid level.

[Visual Basic .NET]
Public Function GetPointCount ( _
    ByVal pAOI As IEnvelope, _
    ByVal Resolution As Double _
) As Double

[C#]
public double GetPointCount (
    IEnvelope pAOI,
    double Resolution
);

[C++]
HRESULT GetPointCount(
  IEnvelope* pAOI,
  double Resolution,
  double* pcPoints
);

[C++]
Parameters
pAOI [in]
  pAOI is a parameter of type IEnvelope
Resolution [in]
  Resolution is a parameter of type double
pcPoints [out, retval]
  pcPoints is a parameter of type double

Product Availability

Description

GetPointCount returns the number of points and breakline vertices, at a particular pyramid level, for those terrain tiles intersected by a given envelope. This yields a relatively quick estimate, albeit over-estimated, of the size of the terrain for that area and vertical tolerance. Only 3-D measurements are counted. Z-less line and polygon vertices are excluded.

GetPointCount will return an error when called on a terrain that is in need of being built. That is, when ITerrain.IsValid returns FALSE. Ensure the terrain IsValid before calling this member.

See Also