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2014/10/16 ¤W¤È 08:18:39
android Programming Glossary: math.cosAndroid Maps API v2 draw circle http://stackoverflow.com/questions/13991301/android-maps-api-v2-draw-circle radius Math.sin i phase SYDNEY.longitude radius Math.cos i phase int color Color.RED mMap.addPolyline options .color.. x double latitudeRad Math.asin Math.sin lat1 Math.cos d Math.cos lat1 Math.sin d Math.cos brng double longitudeRad.. x double latitudeRad Math.asin Math.sin lat1 Math.cos d Math.cos lat1 Math.sin d Math.cos brng double longitudeRad lon1 Math.atan2..
Android - SQlite Getting nearest locations (with latitude and longitude) http://stackoverflow.com/questions/3695224/android-sqlite-getting-nearest-locations-with-latitude-and-longitude Math.toRadians bearing double lat Math.asin Math.sin latA Math.cos angularDistance Math.cos latA Math.sin angularDistance Math.cos.. lat Math.asin Math.sin latA Math.cos angularDistance Math.cos latA Math.sin angularDistance Math.cos trueCourse double dlon.. angularDistance Math.cos latA Math.sin angularDistance Math.cos trueCourse double dlon Math.atan2 Math.sin trueCourse Math.sin..
Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue http://stackoverflow.com/questions/4354939/understanding-the-use-of-colormatrix-and-colormatrixcolorfilter-to-modify-a-draw 180f float Math.PI if value 0 return float cosVal float Math.cos value float sinVal float Math.sin value float lumR 0.213f float..
Android Gauge Animation Question http://stackoverflow.com/questions/6156674/android-gauge-animation-question center to arc at specified angle p.lineTo width 2 float Math.cos Math.toRadians angleStart width 2 width 2 float Math.sin Math.toRadians..
How do I draw an arrowhead (in Android)? http://stackoverflow.com/questions/6713757/how-do-i-draw-an-arrowhead-in-android theta Math.toRadians angle result 0 centerX int length Math.cos theta result 1 centerY int length Math.sin theta return points..
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 lng1 lng2 double a Math.sin dLat 2 Math.sin dLat 2 Math.cos Math.toRadians lat2 Math.cos Math.toRadians lat1 Math.sin.. dLat 2 Math.sin dLat 2 Math.cos Math.toRadians lat2 Math.cos Math.toRadians lat1 Math.sin dLng 2 Math.sin dLng 2 double.. double dist Math.sin deg2rad lat1 Math.sin deg2rad lat2 Math.cos deg2rad lat1 Math.cos deg2rad lat2 Math.cos deg2rad theta dist..
Android: How To: display a map (still image file) with a moving current location pointer http://stackoverflow.com/questions/7062115/android-how-to-display-a-map-still-image-file-with-a-moving-current-location upperLeft.bearingTo current double currentDistanceX Math.cos bearing hypotenuse percentage to mark the position double currentPixelX.. currentDistanceX upperLeft.distanceTo lowerRight Math.cos upperLeft.bearingTo lowerRight mapWidth moveIndicatorX currentPixelX..
http://stackoverflow.com/questions/9272232/fft-library-in-android-sdk double n 2 sin new double n 2 for int i 0 i n 2 i cos i Math.cos 2 Math.PI i n sin i Math.sin 2 Math.PI i n public void fft..
Android Maps API v2 draw circle http://stackoverflow.com/questions/13991301/android-maps-api-v2-draw-circle for int i 0 i numPoints i options.add new LatLng SYDNEY.latitude radius Math.sin i phase SYDNEY.longitude radius Math.cos i phase int color Color.RED mMap.addPolyline options .color color .width 2 This is what gets drawn on different part of.. new PolylineOptions for int x 0 x 360 x double brng Math.toRadians x double latitudeRad Math.asin Math.sin lat1 Math.cos d Math.cos lat1 Math.sin d Math.cos brng double longitudeRad lon1 Math.atan2 Math.sin brng Math.sin d Math.cos lat1 Math.cos.. for int x 0 x 360 x double brng Math.toRadians x double latitudeRad Math.asin Math.sin lat1 Math.cos d Math.cos lat1 Math.sin d Math.cos brng double longitudeRad lon1 Math.atan2 Math.sin brng Math.sin d Math.cos lat1 Math.cos d Math.sin..
Android - SQlite Getting nearest locations (with latitude and longitude) http://stackoverflow.com/questions/3695224/android-sqlite-getting-nearest-locations-with-latitude-and-longitude double angularDistance range EarthRadius double trueCourse Math.toRadians bearing double lat Math.asin Math.sin latA Math.cos angularDistance Math.cos latA Math.sin angularDistance Math.cos trueCourse double dlon Math.atan2 Math.sin trueCourse.. EarthRadius double trueCourse Math.toRadians bearing double lat Math.asin Math.sin latA Math.cos angularDistance Math.cos latA Math.sin angularDistance Math.cos trueCourse double dlon Math.atan2 Math.sin trueCourse Math.sin angularDistance.. bearing double lat Math.asin Math.sin latA Math.cos angularDistance Math.cos latA Math.sin angularDistance Math.cos trueCourse double dlon Math.atan2 Math.sin trueCourse Math.sin angularDistance Math.cos latA Math.cos angularDistance..
Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue http://stackoverflow.com/questions/4354939/understanding-the-use-of-colormatrix-and-colormatrixcolorfilter-to-modify-a-draw ColorMatrix cm float value value cleanValue value 180f 180f float Math.PI if value 0 return float cosVal float Math.cos value float sinVal float Math.sin value float lumR 0.213f float lumG 0.715f float lumB 0.072f float mat new float lumR..
Android Gauge Animation Question http://stackoverflow.com/questions/6156674/android-gauge-animation-question of the circle p.setLastPoint width 2 width 2 add line from the center to arc at specified angle p.lineTo width 2 float Math.cos Math.toRadians angleStart width 2 width 2 float Math.sin Math.toRadians angleStart width 2 add arc from start angle with..
How do I draw an arrowhead (in Android)? http://stackoverflow.com/questions/6713757/how-do-i-draw-an-arrowhead-in-android double length double angle int points new int 2 double theta Math.toRadians angle result 0 centerX int length Math.cos theta result 1 centerY int length Math.sin theta return points I have taken a look at the following threads for guidance..
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 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 2 Math.sin dLng 2 double c 2 Math.atan2 Math.sqrt a Math.sqrt.. 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 2 Math.sin dLng 2 double c 2 Math.atan2 Math.sqrt a Math.sqrt 1 a double dist earthRadius.. double lon1 double lat2 double lon2 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 return..
Android: How To: display a map (still image file) with a moving current location pointer http://stackoverflow.com/questions/7062115/android-how-to-display-a-map-still-image-file-with-a-moving-current-location double hypotenuse upperLeft.distanceTo current double bearing upperLeft.bearingTo current double currentDistanceX Math.cos bearing hypotenuse percentage to mark the position double currentPixelX currentDistanceX upperLeft.distanceTo lowerRight..
http://stackoverflow.com/questions/9272232/fft-library-in-android-sdk FFT length must be power of 2 precompute tables cos new double n 2 sin new double n 2 for int i 0 i n 2 i cos i Math.cos 2 Math.PI i n sin i Math.sin 2 Math.PI i n public void fft double x double y int i j k n1 n2 a double c s t1 t2 Bit reverse..
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