Java 按两点距离的百分比展开两点创建的区域
我有两个创建长方体的地理点(每个点都是一个角)。我想创建一个稍大一点的盒子。以下代码段是创建该框的代码Java 按两点距离的百分比展开两点创建的区域,java,spring,google-maps,Java,Spring,Google Maps,我有两个创建长方体的地理点(每个点都是一个角)。我想创建一个稍大一点的盒子。以下代码段是创建该框的代码 private Box createRouteBox(DirectionsRoute route){ Box box; Bounds bounds = route.bounds; LatLng northeast = bounds.northeast; LatLng southwest = bounds.southwest; Point northe
private Box createRouteBox(DirectionsRoute route){
Box box;
Bounds bounds = route.bounds;
LatLng northeast = bounds.northeast;
LatLng southwest = bounds.southwest;
Point northeastPoint = new Point(northeast.lng, northeast.lat);
Point southwestPoint = new Point(southwest.lng, southwest.lat);
box = new Box(northeastPoint, southwestPoint);
return box;
}
你能给我一个前进的建议吗?试试这样的方法
private Box expandedBox(Point northeastPoint, Point southwestPoint){
// percentage of distance to set as padding to the box
Double offset = 0.1;
Double distance = pointDistance(northeastPoint, southwestPoint);
Double padding = (distance * offset);
// get current x, y
Double neX = northeastPoint.getX();
Double neY = northeastPoint.getY();
Double swX = southwestPoint.getX();
Double swY = southwestPoint.getY();
// init new x, y
Double neX2, neY2, swX2, swY2;
if(neX > swX){
neX2 = neX + padding;
swX2 = swX - padding;
} else {
neX2 = neX - padding;
swX2 = swX + padding;
}
if(neY > swY){
neY2 = neY + padding;
swY2 = swY - padding;
} else {
neY2 = neY - padding;
swY2 = swY + padding;
}
northeastPoint = new Point(neX2, neY2);
southwestPoint = new Point(swX2, swY2);
return new Box(northeastPoint, southwestPoint);
}
private Double pointDistance(Point p1, Point p2) {
return Math.sqrt((p2.getY() - p1.getY()) * (p2.getY() - p1.getY()) + (p2.getX() - p1.getX()) * (p2.getX() - p1.getX()));
}
您可以将偏移更改为所需距离的百分比。尝试类似的操作
private Box expandedBox(Point northeastPoint, Point southwestPoint){
// percentage of distance to set as padding to the box
Double offset = 0.1;
Double distance = pointDistance(northeastPoint, southwestPoint);
Double padding = (distance * offset);
// get current x, y
Double neX = northeastPoint.getX();
Double neY = northeastPoint.getY();
Double swX = southwestPoint.getX();
Double swY = southwestPoint.getY();
// init new x, y
Double neX2, neY2, swX2, swY2;
if(neX > swX){
neX2 = neX + padding;
swX2 = swX - padding;
} else {
neX2 = neX - padding;
swX2 = swX + padding;
}
if(neY > swY){
neY2 = neY + padding;
swY2 = swY - padding;
} else {
neY2 = neY - padding;
swY2 = swY + padding;
}
northeastPoint = new Point(neX2, neY2);
southwestPoint = new Point(swX2, swY2);
return new Box(northeastPoint, southwestPoint);
}
private Double pointDistance(Point p1, Point p2) {
return Math.sqrt((p2.getY() - p1.getY()) * (p2.getY() - p1.getY()) + (p2.getX() - p1.getX()) * (p2.getX() - p1.getX()));
}
您可以将偏移量更改为所需距离的百分比。您使用的API是什么?
DirectionsRoute
来自谷歌地图和Box
和Point
来自spring framework geoOK我知道您有一个有效的答案……您使用的API是什么?DirectionsRoute
来自谷歌地图和Box
而点
来自spring框架geoOK,正如我看到的,您有一个有效的答案。。。