Copies to outPoint the properties of a point on the curve at a specified distance from the beginning of the curve.
[Visual Basic .NET] Public Sub QueryPoint3D ( _ ByVal extension As esriSegmentExtension, _ ByVal DistanceAlongCurve As Double, _ ByVal bAsRatio As Boolean, _ ByVal pOutPoint As IPoint _ )
[C#] public void QueryPoint3D ( esriSegmentExtension extension, double DistanceAlongCurve, bool bAsRatio, IPoint pOutPoint );
[C++]
HRESULT QueryPoint3D(
esriSegmentExtension extension,
double DistanceAlongCurve,
VARIANT_BOOL bAsRatio,
IPoint* pOutPoint
);
[C++]Parameters
extensionextension is a parameter of type esriSegmentExtension
DistanceAlongCurve DistanceAlongCurve is a parameter of type double bAsRatio bAsRatio is a parameter of type VARIANT_BOOL pOutPointpOutPoint is a parameter of type IPoint
Product Availability
Description
Returns the Point at a given 3D distance along the curve or
extended curve. If the distance is less than the length of
the curve, then the returned point is the point at that distance
along the curve. If the distance is less than zero, or
greater than the length of the curve, then the returned point is on
the curve specified by the extension method. The distance may
be specified as a fixed unit of measure or a ratio of the 3D length
of the curve.
public static void QueryPoint3D()
{
const double
DistanceAlongCurve =
0.707;
IGeometry polylineGeometry = GetPolylineGeometry();
IPolyline polyline = polylineGeometry as IPolyline;
IPoint firstPoint = polyline.FromPoint;
ICurve3D curve3D = polylineGeometry as ICurve3D;
IPoint outPoint = new PointClass();
curve3D.QueryPoint3D(
esriSegmentExtension.esriNoExtension,
DistanceAlongCurve,
true,
outPoint
);
//outPoint = (-4.685, -4.437,
-5.804)
}