com.amap.api.maps.utils

类 SpatialRelationUtil

java.lang.Object

com.amap.api.maps.utils.SpatialRelationUtil

public class SpatialRelationUtil
extends java.lang.Object

计算点到线最短距离工具类
Tool class for calculating the shortest distance from a point to a line

从以下版本开始:

4.1.3

字段概要

字段

限定符和类型	字段和说明
static int	A_CIRCLE_DEGREE
static int	A_HALF_CIRCLE_DEGREE
static int	MIN_OFFSET_DEGREE
static int	MIN_POLYLINE_POINT_SIZE

方法概要

限定符和类型	方法和说明
static android.util.Pair<java.lang.Integer,com.autonavi.amap.mapcore.DPoint>	calShortestDistancePoint(java.util.List<com.autonavi.amap.mapcore.DPoint> points, com.autonavi.amap.mapcore.DPoint point) 计算一个点在线上的垂足，如果垂足在线上的某一顶点，则直接返回顶点的下标 Calculate the foot of a perpendicular from a point to a line, if the foot is at a vertex of the line, directly return the index of the vertex
static android.util.Pair<java.lang.Integer,com.autonavi.amap.mapcore.DPoint>	calShortestDistancePoint(java.util.List<com.autonavi.amap.mapcore.DPoint> points, com.autonavi.amap.mapcore.DPoint point, float bearing)
static android.util.Pair<java.lang.Integer,LatLng>	calShortestDistancePoint(java.util.List<LatLng> points, LatLng point) 计算一个点在线上的垂足，如果垂足在线上的某一顶点，则直接返回顶点的下标 Calculate the foot of a perpendicular from a point to a line, if the foot is at a vertex of the line, directly return the index of the vertex
static android.util.Pair<java.lang.Integer,LatLng>	calShortestDistancePoint(java.util.List<LatLng> points, LatLng point, float bearing, double distance)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

MIN_POLYLINE_POINT_SIZE

public static final int MIN_POLYLINE_POINT_SIZE

另请参阅:

常量字段值

A_HALF_CIRCLE_DEGREE

public static final int A_HALF_CIRCLE_DEGREE

另请参阅:

常量字段值

A_CIRCLE_DEGREE

public static final int A_CIRCLE_DEGREE

另请参阅:

常量字段值

MIN_OFFSET_DEGREE

public static final int MIN_OFFSET_DEGREE

另请参阅:

常量字段值

方法详细资料

calShortestDistancePoint

public static android.util.Pair<java.lang.Integer,LatLng> calShortestDistancePoint(java.util.List<LatLng> points,
                                                                                   LatLng point,
                                                                                   float bearing,
                                                                                   double distance)

calShortestDistancePoint

public static android.util.Pair<java.lang.Integer,LatLng> calShortestDistancePoint(java.util.List<LatLng> points,
                                                                                   LatLng point)

计算一个点在线上的垂足，如果垂足在线上的某一顶点，则直接返回顶点的下标
Calculate the foot of a perpendicular from a point to a line, if the foot is at a vertex of the line, directly return the index of the vertex

参数:

points - 坐标数组
Coordinate array

point - 坐标点
Coordinate point

返回:

从以下版本开始:

4.1.3

calShortestDistancePoint

public static android.util.Pair<java.lang.Integer,com.autonavi.amap.mapcore.DPoint> calShortestDistancePoint(java.util.List<com.autonavi.amap.mapcore.DPoint> points,
                                                                                                             com.autonavi.amap.mapcore.DPoint point)

计算一个点在线上的垂足，如果垂足在线上的某一顶点，则直接返回顶点的下标
Calculate the foot of a perpendicular from a point to a line, if the foot is at a vertex of the line, directly return the index of the vertex

参数:

points - DPoint 数组
DPoint array

point -

返回:

从以下版本开始:

4.1.3

calShortestDistancePoint

public static android.util.Pair<java.lang.Integer,com.autonavi.amap.mapcore.DPoint> calShortestDistancePoint(java.util.List<com.autonavi.amap.mapcore.DPoint> points,
                                                                                                             com.autonavi.amap.mapcore.DPoint point,
                                                                                                             float bearing)