2014/10/16 上午 08:17:59

android Programming Glossary: lng1

http://stackoverflow.com/questions/13991301/android-maps-api-v2-draw-circle

double lat1 radiusInMeters EARTH_RADIUS double lng1 radiusInMeters EARTH_RADIUS Math.cos Math.PI lat 180 double.. lat 180 double lat2 lat lat1 180 Math.PI double lng2 lng lng1 180 Math.PI Point p1 YourActivity.getMap .getProjection .toScreenLocation..

Android Maps v2 - animate camera to include most markers

http://stackoverflow.com/questions/19103283/android-maps-v2-animate-camera-to-include-most-markers

in meters private float distBetween double lat1 double lng1 double lat2 double lng2 double earthRadius 3958.75 double dLat.. Math.toRadians lat2 lat1 double dLng Math.toRadians lng2 lng1 double a Math.sin dLat 2 Math.sin dLat 2 Math.cos Math.toRadians..

How to change 1 meter to pixel distance?

http://stackoverflow.com/questions/3385117/how-to-change-1-meter-to-pixel-distance

is Earth radius in meters var lat1 PI 180 centerLat var lng1 PI 180 centerLng Go around a circle from 0 to 360 degrees every.. atan2 sin tc sin d cos lat1 cos d sin lat1 sin y var x lng1 dlng PI 2 PI PI var lat y 180 PI var lon x 180 PI Convert the..

How to calculate distance between two locations using their longitude and latitude value

http://stackoverflow.com/questions/6981916/how-to-calculate-distance-between-two-locations-using-their-longitude-and-latitu

getting irrelevant distance. we are getting lat1 and lng1 from database. getting lat2 and lng2 from GPS as below public.. dLat Math.toRadians lat1 lat2 double dLng Math.toRadians lng1 lng2 double a Math.sin dLat 2 Math.sin dLat 2 Math.cos Math.toRadians..

Android Maps API v2 draw circle

http://stackoverflow.com/questions/13991301/android-maps-api-v2-draw-circle

int convertMetersToPixels double lat double lng double radiusInMeters double lat1 radiusInMeters EARTH_RADIUS double lng1 radiusInMeters EARTH_RADIUS Math.cos Math.PI lat 180 double lat2 lat lat1 180 Math.PI double lng2 lng lng1 180 Math.PI Point.. double lng1 radiusInMeters EARTH_RADIUS Math.cos Math.PI lat 180 double lat2 lat lat1 180 Math.PI double lng2 lng lng1 180 Math.PI Point p1 YourActivity.getMap .getProjection .toScreenLocation new LatLng lat lng Point p2 YourActivity.getMap..

Android Maps v2 - animate camera to include most markers

http://stackoverflow.com/questions/19103283/android-maps-v2-animate-camera-to-include-most-markers

pos1.longitude pos2.latitude pos2.longitude distance in meters private float distBetween double lat1 double lng1 double lat2 double lng2 double earthRadius 3958.75 double dLat Math.toRadians lat2 lat1 double dLng Math.toRadians lng2.. lat2 double lng2 double earthRadius 3958.75 double dLat Math.toRadians lat2 lat1 double dLng Math.toRadians lng2 lng1 double a Math.sin dLat 2 Math.sin dLat 2 Math.cos Math.toRadians lat1 Math.cos Math.toRadians lat2 Math.sin dLng 2 Math.sin..

How to change 1 meter to pixel distance?

http://stackoverflow.com/questions/3385117/how-to-change-1-meter-to-pixel-distance

how you draw a circle Pseudo code var d radius 6378800 6378800 is Earth radius in meters var lat1 PI 180 centerLat var lng1 PI 180 centerLng Go around a circle from 0 to 360 degrees every 10 degrees for var a 0 a 361 a 10 var tc PI 180 a var y.. 180 a var y asin sin lat1 cos d cos lat1 sin d cos tc var dlng atan2 sin tc sin d cos lat1 cos d sin lat1 sin y var x lng1 dlng PI 2 PI PI var lat y 180 PI var lon x 180 PI Convert the lat and lon to pixel x y These two mashups draw a circle of..

How to calculate distance between two locations using their longitude and latitude value

http://stackoverflow.com/questions/6981916/how-to-calculate-distance-between-two-locations-using-their-longitude-and-latitu

is giving wrong distance. sometimes getting right and sometimes getting irrelevant distance. we are getting lat1 and lng1 from database. getting lat2 and lng2 from GPS as below public class MyLocationListener implements LocationListener @Override.. Calculating distance double earthRadius 3958.75 double dLat Math.toRadians lat1 lat2 double dLng Math.toRadians lng1 lng2 double a Math.sin dLat 2 Math.sin dLat 2 Math.cos Math.toRadians lat2 Math.cos Math.toRadians lat1 Math.sin dLng..