在沿着曲线的指定距离处构造一个曲线的切线的垂线(注:bFromStart参数不会影响线性方向)
命名空间:
GISShare.SMap.Geometry
程序集:
GISShare.SMap (在 GISShare.SMap.dll 中) 版本:1.9.1.6 (1.9.1.6)
语法IBeeline QueryNormal(
double dDistanceAlongCurve,
double dLength,
bool bRatio,
bool bFromStart,
ExtensionStyle eExtensionStyle,
bool bHaveSpatialReference
)
Function QueryNormal (
dDistanceAlongCurve As Double,
dLength As Double,
bRatio As Boolean,
bFromStart As Boolean,
eExtensionStyle As ExtensionStyle,
bHaveSpatialReference As Boolean
) As IBeeline
IBeeline^ QueryNormal(
double dDistanceAlongCurve,
double dLength,
bool bRatio,
bool bFromStart,
ExtensionStyle eExtensionStyle,
bool bHaveSpatialReference
)
abstract QueryNormal :
dDistanceAlongCurve : float *
dLength : float *
bRatio : bool *
bFromStart : bool *
eExtensionStyle : ExtensionStyle *
bHaveSpatialReference : bool -> IBeeline
参数
- dDistanceAlongCurve
- 类型: SystemDouble
沿曲线距离 - dLength
- 类型: SystemDouble
垂线长度 - bRatio
- 类型: SystemBoolean
参数“dDistanceAlongCurve”是否为比例 - bFromStart
- 类型: SystemBoolean
从起点开始往后推算,反之从终点推算 - eExtensionStyle
- 类型: GISShare.SMap.GeometryExtensionStyle
是否考虑延长线的情况 - bHaveSpatialReference
- 类型: SystemBoolean
返回对象是否含有空间参考
返回值
类型:
IBeeline垂线
参见