[ Android ] 다음 맵에서 지원하지 않는 점선 라인.. 해결??

Draw Dashed Line

다음 맵에서는 점선 그리기가 제공되지 않는다. 그래서 강제로 그린다.

어떻게??

이렇게...

	// using in Daum Map API
	public class DashedLineMaker {
	class Route {
	public double latitude;
	public double longitude;
	}
	/**
	* 점선 그리기
	* @param routeList
	*/
	public static void drawDashedPolyLine(MapView mapView,ArrayList<Route> routeList , double dashedSize) {
	/* Boolean to control drawing alternate lines */
	boolean added = false;
	for (int i = 0; i < routeList.size() - 1 ; i++) {
	/* Get distance between current and next point */
	double distance = getConvertedDistance(routeList.get(i),routeList.get(i + 1));
	/* If distance is less than 0.002 kms */
	if (distance < dashedSize) {
	if (!added) {
	MapPolyline routeLine = new MapPolyline();
	routeLine.setLineColor(Color.argb(255, 83, 144, 245));
	routeLine.addPoint(MapPoint.mapPointWithGeoCoord(routeList.get(i).latitude, routeList.get(i).longitude));
	routeLine.addPoint(MapPoint.mapPointWithGeoCoord(routeList.get(i + 1).latitude, routeList.get(i + 1).longitude));
	mapView.addPolyline(routeLine);
	added = true;
	} else {
	/* Skip this piece */
	added = false;
	}
	} else {
	/* Get how many divisions to make of this line */
	int countOfDivisions = (int) ((distance / dashedSize));
	/* Get difference to add per lat/lng */
	double latdiff = (routeList.get(i+1).latitude - routeList.get(i).latitude) / countOfDivisions;
	double lngdiff = (routeList.get(i + 1).longitude - routeList.get(i).longitude) / countOfDivisions;
	/* Last known indicates start point of polyline. Initialized to ith point */
	Route lastKnowLatLng = new Route(routeList.get(i).latitude, routeList.get(i).longitude);
	for (int j = 0; j < countOfDivisions; j++) {
	/* Next point is point + diff */
	Route nextLatLng = new Route(lastKnowLatLng.latitude + latdiff, lastKnowLatLng.longitude + lngdiff);
	if (!added) {
	MapPolyline routeLine = new MapPolyline();
	routeLine.setLineColor(Color.argb(255, 83, 144, 245));
	routeLine.addPoint(MapPoint.mapPointWithGeoCoord(lastKnowLatLng.latitude, lastKnowLatLng.longitude));
	routeLine.addPoint(MapPoint.mapPointWithGeoCoord(nextLatLng.latitude, nextLatLng.longitude));
	mapView.addPolyline(routeLine);
	added = true;
	} else {
	added = false;
	}
	lastKnowLatLng = nextLatLng;
	}
	}
	}
	}
	/**
	* 두 점 사이의 거리
	* @param route1
	* @param route2
	* @return
	*/
	public static double getConvertedDistance(Route route1, Route route2) {
	double distance = distance(
	route1.latitude,
	route1.longitude,
	route2.latitude,
	route2.longitude);
	BigDecimal bd = new BigDecimal(distance);
	BigDecimal res = bd.setScale(3, RoundingMode.DOWN);
	return res.doubleValue();
	}
	public static double distance(double lat1, double lon1, double lat2,
	double lon2) {
	if ((lat1 == lat2) && (lon1 == lon2)) {
	return 0;
	} else
	return distance(lat1, lon1, lat2, lon2, 'K');
	}
	public static double distance(double lat1, double lon1, double lat2,
	double lon2, char unit) {
	double theta = lon1 - lon2;
	double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2))
	+ Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2))
	* Math.cos(deg2rad(theta));
	dist = Math.acos(dist);
	dist = rad2deg(dist);
	dist = dist * 60 * 1.1515;
	if (unit == 'K') {
	dist = dist * 1.609344;
	} else if (unit == 'N') {
	dist = dist * 0.8684;
	}
	return (dist);
	}
	private static double deg2rad(double deg) {
	return (deg * Math.PI / 180.0);
	}
	private static double rad2deg(double rad) {
	return (rad * 180.0 / Math.PI);
	}
	}

view raw DashedLineMaker.java hosted with ❤ by GitHub

stackoverflow에서 참조를 했는데 어디서 했는지 모르겠다.

일단 글을 남긴다....

아! 적용해보니 확대를 많이하면 조금씩 엇나가 있는게 보인다. 정확한 점선은 아니지만

퀼리티가 그리 중요하지 않다면 써보는 것을 추천.