IGeoDatabaseBridge2.GetLineOfSight Method

Returns a line-of-site indicator interpolated from the TIN based on an input polyline.

[Visual Basic .NET]
Public Sub GetLineOfSight ( _
    ByVal pSurface As ISurface, _
    ByVal pObserver As IPoint, _
    ByVal pTarget As IPoint, _
    ByRef ppObstruction As IPoint, _
    ByRef ppVisibleLines As IPolyline, _
    ByRef ppInvisibleLines As IPolyline, _
    ByRef pbIsVisible As Boolean, _
    ByVal bApplyCurvature As Boolean, _
    ByVal bApplyRefraction As Boolean, _
    [ByRef pRefractionFactor As Object] _
)

[C#]
public void GetLineOfSight (
    ISurface pSurface,
    IPoint pObserver,
    IPoint pTarget,
    ref IPoint ppObstruction,
    ref IPolyline ppVisibleLines,
    ref IPolyline ppInvisibleLines,
    ref bool pbIsVisible,
    ref bool bApplyCurvature,
    ref bool bApplyRefraction,
    ref object pRefractionFactor
);

[C++]
HRESULT GetLineOfSight(
  ISurface* pSurface,
  IPoint* pObserver,
  IPoint* pTarget,
  IPoint** ppObstruction,
  IPolyline** ppVisibleLines,
  IPolyline** ppInvisibleLines,
  VARIANT_BOOL* pbIsVisible,
  VARIANT_BOOL bApplyCurvature,
  VARIANT_BOOL bApplyRefraction,
  VARIANT* pRefractionFactor
);

[C++]

Parameters
pSurface [in]

  pSurface is a parameter of type ISurface
pObserver [in]

  pObserver is a parameter of type IPoint
pTarget [in]

  pTarget is a parameter of type IPoint
ppObstruction [out]

  ppObstruction is a parameter of type IPoint
ppVisibleLines [out]

  ppVisibleLines is a parameter of type IPolyline
ppInvisibleLines [out]

  ppInvisibleLines is a parameter of type IPolyline
pbIsVisible [out]
  pbIsVisible is a parameter of type VARIANT_BOOL
bApplyCurvature [in]
  bApplyCurvature is a parameter of type VARIANT_BOOL
bApplyRefraction [in]
  bApplyRefraction is a parameter of type VARIANT_BOOL
pRefractionFactor [optional]
  pRefractionFactor is a parameter of type VARIANT

  To indicate this parameter is undefined pass a reference to a VARIANT with type VT_ERROR and scode value of DISP_E_PARAMNOTFOUND.

Product Availability

See Also