ICurveQueryTangent 方法

IBeeline QueryTangent(
	double dDistanceAlongCurve,
	double dLength,
	bool bRatio,
	bool bFromStart,
	ExtensionStyle eExtensionStyle,
	bool bHaveSpatialReference
)

Function QueryTangent ( 
	dDistanceAlongCurve As Double,
	dLength As Double,
	bRatio As Boolean,
	bFromStart As Boolean,
	eExtensionStyle As ExtensionStyle,
	bHaveSpatialReference As Boolean
) As IBeeline

IBeeline^ QueryTangent(
	double dDistanceAlongCurve, 
	double dLength, 
	bool bRatio, 
	bool bFromStart, 
	ExtensionStyle eExtensionStyle, 
	bool bHaveSpatialReference
)

abstract QueryTangent : 
        dDistanceAlongCurve : float * 
        dLength : float * 
        bRatio : bool * 
        bFromStart : bool * 
        eExtensionStyle : ExtensionStyle * 
        bHaveSpatialReference : bool -> IBeeline