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EvaluateAtPoint Method (IPolyLine3D)

Gets the corresponding U parameter, the distance from the start point, and the first and second derivatives at the specified point on the 3D PolyLine.

.NET Syntax

Visual Basic (Declaration) 
Sub EvaluateAtPoint( _
   double PointOnCurveX As System.Double, _
   double PointOnCurveY As System.Double, _
   double PointOnCurveZ As System.Double, _
   double* Parameter As System.Double, _
   double* Distance As System.Double, _
   dsDoubleArray* FirstDerivativeDblArray As System.Object, _
   dsDoubleArray* SecondDerivativeDblArray As System.Object _
)
C# 
void EvaluateAtPoint( 
   System.double PointOnCurveX,
   System.double PointOnCurveY,
   System.double PointOnCurveZ,
   out System.double Parameter,
   out System.double Distance,
   out System.object FirstDerivativeDblArray,
   out System.object SecondDerivativeDblArray
)
JavaScript 
EvaluateAtPoint( 
   PointOnCurveX : Number,
   PointOnCurveY : Number,
   PointOnCurveZ : Number
) : {
   Parameter : Number,
   Distance : Number,
   FirstDerivativeDblArray : Array,
   SecondDerivativeDblArray : Array
}
COM native C++ 
HRESULT EvaluateAtPoint( 
   DOUBLE PointOnCurveX,
   DOUBLE PointOnCurveY,
   DOUBLE PointOnCurveZ,
   DOUBLE* Parameter,
   DOUBLE* Distance,
   VARIANT* FirstDerivativeDblArray,
   VARIANT* SecondDerivativeDblArray
)
C++ 
DSRESULT EvaluateAtPoint( 
   double PointOnCurveX,
   double PointOnCurveY,
   double PointOnCurveZ,
   double* Parameter,
   double* Distance,
   dsDoubleArray* FirstDerivativeDblArray,
   dsDoubleArray* SecondDerivativeDblArray
)

Parameters

PointOnCurveX
x coordinate of the point on the 3D PolyLine
PointOnCurveY
y coordinate of the point on the 3D PolyLine
PointOnCurveZ
z coordinate of the point on the 3D PolyLine
Parameter[out]

Corresponding U parameter at the specified point

Distance[out]

Distance of the specified point from the start point

FirstDerivativeDblArray[out]

Array of doubles indicating the first derivative at the point

SecondDerivativeDblArray[out] or Return Value

Array of doubles indicating the second derivative at the point

 

See Also

Availability

DraftSight V1R1.3


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0.20.21