高德覆盖物，优化移动请求，获取当前view的经纬度，创建覆盖物，判断地图移动结束后中心是否在覆盖物内，若不在发起请求，移除覆盖物，重新创建，（不符合实际使用）//这种方法会被放大缩小所影响，因为覆盖物的大小是不固定的
//声明
var YhyMAPolygon :MAPolygon!
//调用
//MARK:笔记 地图结束移动
func mapView(_ mapView: MAMapView!, mapDidMoveByUser wasUserAction: Bool) {
if YhyMAPolygon != nil {
panDuanQingQiuFanWei()
}else{
chuangjianQingIuWeiLan()
}
}
//创建
//创建请求范围
func chuangjianQingIuWeiLan() -> () {
//设置想要获取的view的指定位置，传入view即可
let weizhiLeft_Top = gdMapView.convert(CGPoint.init(x: CGFloat(0), y: CGFloat(64)), toCoordinateFrom: self.view)
let weizhiLeft_dow = gdMapView.convert(CGPoint.init(x: CGFloat(0), y: CGFloat(ScreenHeight-64)), toCoordinateFrom: self.view)
let weizhiRinght_top = gdMapView.convert(CGPoint.init(x: CGFloat(ScreenWidth), y: CGFloat(64)), toCoordinateFrom: self.view)
let weizhiRinght_dow = gdMapView.convert(CGPoint.init(x: CGFloat(ScreenWidth), y: CGFloat(ScreenHeight-64)), toCoordinateFrom: self.view)
var coords1 = [weizhiLeft_Top,
weizhiRinght_top,
weizhiRinght_dow,
weizhiLeft_dow]
YhyMAPolygon = MAPolygon.init(coordinates: &coords1, count: UInt(coords1.count))
//用titile来区别不同覆盖物（用于自定义不同属性的多变形的颜色）
YhyMAPolygon.title = "请求范围"
gdMapView.add(YhyMAPolygon, level: MAOverlayLevel.aboveLabels)
}
//移除范围
func qingChuQingQiuWeiLan() -> () {
if YhyMAPolygon != nil {
gdMapView.remove(YhyMAPolygon)
chuangjianQingIuWeiLan()
}
}
//判断是否移除范围
func panDuanQingQiuFanWei() -> () {
let tinchePolygon: MAPolygon = YhyMAPolygon
let YHylocationPoint = MAMapPointForCoordinate(gdMapView.centerCoordinate)
if (MAPolygonContainsPoint(YHylocationPoint, tinchePolygon.points, tinchePolygon.pointCount)) {
print("在里面")
} else {
print("在外面")
qingChuQingQiuWeiLan()
faQiQingQiu()
}
}
//发起请求
func faQiQingQiu() -> () {
print("移除范围，发起请求")
}
//覆盖物颜色
//MARK:地图上覆盖物的渲染，可以设置路径线路和覆盖物的宽度，颜色等
func mapView(_ mapView: MAMapView!, rendererFor overlay: MAOverlay!) -> MAOverlayRenderer! {
if (overlay.isKind(of: MAPolygon.self))
{
let renderer = MAPolygonRenderer.init(polygon: overlay as! MAPolygon!)
renderer?.strokeColor = #colorLiteral(red: 0.02943656221, green: 0.5472248197, blue: 0.9345962405, alpha: 1)
renderer?.fillColor = #colorLiteral(red: 0.4650182724, green: 0.8273108602, blue: 0.9848365188, alpha: 1).withAlphaComponent(0.1)
renderer?.lineWidth = 2.0
renderer?.lineDash = true
if overlay.title == "请求范围"{
renderer?.strokeColor = UIColor.red
renderer?.fillColor = UIColor.red.withAlphaComponent(0.1)
renderer?.lineWidth = 4.0
}
return renderer;
}
}