Hi, I'm not sure what your question is. Your formulas look OK to me. Regarding the radius, the calculation for r returns the distance from the (x,y,z) point to the origin (0,0,0). So if that does not match the radius of the earth, then the x,y,z point must not be on the surface of the earth. (Of course, the earth is not quite exactly spherical anyway!)
Ralph On Mar 22, 9:37 pm, dyc <[email protected]> wrote: > Hey there! > > Thanks for the help, I got this along pretty far turning into an > actual function that works with my stuff...but im still not getting it > to work...it doesnt turn the actual coords into matching ones from the > MouseEvent3D. > > Is there something wrong with the var r:Number part? Does that formula > return the radius from he center point? I know the radius and I am not > quite sure that it would match, but I dunno the actual match here... > > var _x:Number = e.sceneX; > var _y:Number = e.sceneY; > var _z:Number = e.sceneZ; > > var r:Number = Math.sqrt(_x*_x + _y*_y + _z*_z); // > radius from > center of the earth to your point > var theta:Number = Math.acos(_z / r); // LAT in > radians > var phi:Number = Math.atan2(_y, _x); // LON in radians > > // Convert from radians above to degrees > var lat:Number = theta * 180 / Math.PI; > var lon:Number = phi * 180 / Math.PI; > > trace("LON :: ", phi, "\nLAT :: ", theta); > > addMarker(-lat, -lon); To unsubscribe from this group, send email to away3d-dev+unsubscribegooglegroups.com or reply to this email with the words "REMOVE ME" as the subject.
