Thanks for your prompt response! I'll try to build it with your instructions and tips
Thanks again! On Mar 11, 11:26 pm, Mike Williams <[email protected]> wrote: > The easiest thing to do is to draw a straight line all the way from your > starting point to the Qibla, rather than drawing a short line in the > same direction. > > Listen for map "moveend" events, remove the line and draw a new one from > the new map.getCenter(). > > Once you know the GLatLng()s of the two endpoints you can calculate the > bearing like this: > > var lat1 = from.latRadians(); > var lon1 = from.lngRadians(); > var lat2 = to.latRadians(); > var lon2 = to.lngRadians(); > var angle = - Math.atan2( Math.sin( lon1 - lon2 ) * Math.cos( lat2 ), > Math.cos( lat1 ) * Math.sin( lat2 ) - Math.sin( lat1 ) > * Math.cos( lat2 ) * Math.cos( lon1 - lon2 ) ); > if ( angle < 0.0 ) angle += Math.PI * 2.0; > angle = angle * 180.0 / Math.PI; > angle = angle.toFixed(2); > > If you insist on having a short line in the specified direction, you can > use the EShapes extension to calculate the endpoint. > var endpoint = EOffsetBearing(map.getCenter(), dist, angle); > > http://econym.org.uk/gmap/eshapes.htm > > --http://econym.org.uk/gmap > The Blackpool Community Church Javascript Team --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
