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2014/10/16 ¤W¤È 08:11:32
android Programming Glossary: coordinateAppropriate multiplication of matrices for rotation/translation http://stackoverflow.com/questions/11965593/appropriate-multiplication-of-matrices-for-rotation-translation 1 zAngle 0 ds 0 The value 0.545867f is added to the Y coordinate on every call to onDrawFrame because of these fields of the..
Google Maps Android api v2 and current location http://stackoverflow.com/questions/13844209/google-maps-android-api-v2-and-current-location this Location lat lng Toast.LENGTH_LONG .show LatLng coordinate new LatLng lat lng Toast.makeText this Location coordinate.latitude.. coordinate new LatLng lat lng Toast.makeText this Location coordinate.latitude coordinate.longitude Toast.LENGTH_LONG .show Marker.. lat lng Toast.makeText this Location coordinate.latitude coordinate.longitude Toast.LENGTH_LONG .show Marker startPerc map.addMarker..
Convert magnetic field X, Y, Z values from device into global reference frame http://stackoverflow.com/questions/15315129/convert-magnetic-field-x-y-z-values-from-device-into-global-reference-frame questions below Getting magnetic field values in global coordinates How can I get the magnetic field vector independent of the.. resolution private TextView maximumRange Magnetic field coordinates measurements. private TextView magneticXTextView private TextView.. i.e v v_1 e_1 v_2 e_2 v_3 e_3 . v_1 v_2 v_3 are called the coordinates of v with respect to the basis e_1 e_2 e_3 . In Android devices..
How to maintain multi layers of ImageViews and keep their aspect ratio based on the largest one? http://stackoverflow.com/questions/16729169/how-to-maintain-multi-layers-of-imageviews-and-keep-their-aspect-ratio-based-on takes the whole screen would be the bottom in the Z coordinate let's call it the backgroundImageView while all of the rest..
How to emulate GPS location in the Android Emulator? http://stackoverflow.com/questions/2279647/how-to-emulate-gps-location-in-the-android-emulator http itouchmap.com latlong.html If you need more then one coordinate you can use a kml file with a route as well it is a little bit..
Incorrect Coordinates From getLocationOnScreen/getLocationInWindow http://stackoverflow.com/questions/2638342/incorrect-coordinates-from-getlocationonscreen-getlocationinwindow or getLocationInWindow both give me a top Y coordinate that is about ~30px status notifications bar's height too far.. status notifications bar's height too far down. The left X coordinate is dead on. As I hinted above I believe the difference is because..
Calculating the angle between the line defined by two points http://stackoverflow.com/questions/2676719/calculating-the-angle-between-the-line-defined-by-two-points on the screen that the user touches. I have the constant coordinates that represent the center of the screen and I can get the coordinates.. that represent the center of the screen and I can get the coordinates of the point that the user taps on. I'm using the formula outlined.. this but I think the fact the I'm working in screen coordinates is causing a miscalculation since the Y coordinate is reversed...
Android phone orientation overview including compass http://stackoverflow.com/questions/4819626/android-phone-orientation-overview-including-compass .. method figure and represents the World's coordinate system B Coordinate system used by the SensorEvent API. C SensorManager.getOrientation.. So my understanding is that A represents the world's coordinate system which I presume refers to the way locations on the planet.. right in thinking that the rotation matrix transforms the coordinate system of B to C So when you call SensorManager.getOrientation..
Android: How to rotate a moving animated sprite based on the coordinates of its destination http://stackoverflow.com/questions/6003823/android-how-to-rotate-a-moving-animated-sprite-based-on-the-coordinates-of-its How to rotate a moving animated sprite based on the coordinates of its destination My application fires up sprite instances.. a Canvas which then move across the screen towards a x y coordinate. I would like to be able to rotate the sprite around its center.. sprite around its center so that it faces its destination coordinates. I am using a sprite sheet and have had issues with clipping...
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 know how to display it. I can get the current location coordinate via WiFi but don't know how to put it into still image to mark..
Android Camera will not work. startPreview fails http://stackoverflow.com/questions/7942378/android-camera-will-not-work-startpreview-fails from the ByteBuffer vertices.put triangleCoords add the coordinates to the FloatBuffer vertices.position 0 set the buffer to read.. vertices.position 0 set the buffer to read the first coordinate initialize vertex Buffer for texcoords vbb ByteBuffer.allocateDirect.. buffer from the ByteBuffer texcoords.put texcoordf add the coordinates to the FloatBuffer texcoords.position 0 set the buffer to..
How to find absolute position of click while zoomed in http://stackoverflow.com/questions/8180442/how-to-find-absolute-position-of-click-while-zoomed-in help people to answer. Problem How do you find a pair of coordinate expressed in canvas userspace when you only have the coordinate.. expressed in canvas userspace when you only have the coordinate expressed in terms of a zoomed image given the original scale.. down I save the centre point of the zoom which is in X Y coordinates based on the current screen . I then have this function act..
Appropriate multiplication of matrices for rotation/translation http://stackoverflow.com/questions/11965593/appropriate-multiplication-of-matrices-for-rotation-translation changes are made objY _uBodyCentreMatrix 1 _uBodyCentre 1 zAngle 0 ds 0 The value 0.545867f is added to the Y coordinate on every call to onDrawFrame because of these fields of the Renderer class private static final float _uBodyCentre new float..
Google Maps Android api v2 and current location http://stackoverflow.com/questions/13844209/google-maps-android-api-v2-and-current-location double lng location.getLongitude Toast.makeText this Location lat lng Toast.LENGTH_LONG .show LatLng coordinate new LatLng lat lng Toast.makeText this Location coordinate.latitude coordinate.longitude Toast.LENGTH_LONG .show Marker.. this Location lat lng Toast.LENGTH_LONG .show LatLng coordinate new LatLng lat lng Toast.makeText this Location coordinate.latitude coordinate.longitude Toast.LENGTH_LONG .show Marker startPerc map.addMarker new MarkerOptions .position coordinate.. lat lng Toast.LENGTH_LONG .show LatLng coordinate new LatLng lat lng Toast.makeText this Location coordinate.latitude coordinate.longitude Toast.LENGTH_LONG .show Marker startPerc map.addMarker new MarkerOptions .position coordinate .title Start .snippet..
Convert magnetic field X, Y, Z values from device into global reference frame http://stackoverflow.com/questions/15315129/convert-magnetic-field-x-y-z-values-from-device-into-global-reference-frame around any axis and gets ~the same values. Please find similar questions below Getting magnetic field values in global coordinates How can I get the magnetic field vector independent of the device rotation In this answer sample solution is described.. Magnetometer spec. private TextView vendor private TextView resolution private TextView maximumRange Magnetic field coordinates measurements. private TextView magneticXTextView private TextView magneticYTextView private TextView magneticZTextView.. 3 tuples v_1 v_2 v_3 with respect to some basis e_1 e_2 e_3 i.e v v_1 e_1 v_2 e_2 v_3 e_3 . v_1 v_2 v_3 are called the coordinates of v with respect to the basis e_1 e_2 e_3 . In Android devices the basis is x y z where for most phone x is along the..
How to maintain multi layers of ImageViews and keep their aspect ratio based on the largest one? http://stackoverflow.com/questions/16729169/how-to-maintain-multi-layers-of-imageviews-and-keep-their-aspect-ratio-based-on and some might even be draggable. the largest one which usually takes the whole screen would be the bottom in the Z coordinate let's call it the backgroundImageView while all of the rest appear on top of it and on top of others . like so backgroundImageView..
How to emulate GPS location in the Android Emulator? http://stackoverflow.com/questions/2279647/how-to-emulate-gps-location-in-the-android-emulator I found this site useful for finding a realistic lat lng http itouchmap.com latlong.html If you need more then one coordinate you can use a kml file with a route as well it is a little bit described in this article . I can't find a better source..
Incorrect Coordinates From getLocationOnScreen/getLocationInWindow http://stackoverflow.com/questions/2638342/incorrect-coordinates-from-getlocationonscreen-getlocationinwindow getLocationOnScreen getLocationInWindow A call to getLocationOnScreen or getLocationInWindow both give me a top Y coordinate that is about ~30px status notifications bar's height too far down. The left X coordinate is dead on. As I hinted above.. both give me a top Y coordinate that is about ~30px status notifications bar's height too far down. The left X coordinate is dead on. As I hinted above I believe the difference is because of the status notification bar... I could be wrong. I..
Calculating the angle between the line defined by two points http://stackoverflow.com/questions/2676719/calculating-the-angle-between-the-line-defined-by-two-points I'm trying to get that object to rotate and point to the area on the screen that the user touches. I have the constant coordinates that represent the center of the screen and I can get the coordinates of the point that the user taps on. I'm using the.. that the user touches. I have the constant coordinates that represent the center of the screen and I can get the coordinates of the point that the user taps on. I'm using the formula outlined in this forum How to get angle between two points It.. axis double angle atan2 y2 y1 x2 x1 180 PI . I implemented this but I think the fact the I'm working in screen coordinates is causing a miscalculation since the Y coordinate is reversed. I'm not sure if this is the right way to go about it any..
Android phone orientation overview including compass http://stackoverflow.com/questions/4819626/android-phone-orientation-overview-including-compass documentation we'll call them A B and C. A SensorManger.getRotationMatrix .. method figure and represents the World's coordinate system B Coordinate system used by the SensorEvent API. C SensorManager.getOrientation .. method figure So my understanding.. SensorEvent API. C SensorManager.getOrientation .. method figure So my understanding is that A represents the world's coordinate system which I presume refers to the way locations on the planet are given as a latitude longitude couple with an optional.. by the phone and allows mapping between the two. So am I right in thinking that the rotation matrix transforms the coordinate system of B to C So when you call SensorManager.getOrientation .. method you use the values array with values that correspond..
Android: How to rotate a moving animated sprite based on the coordinates of its destination http://stackoverflow.com/questions/6003823/android-how-to-rotate-a-moving-animated-sprite-based-on-the-coordinates-of-its How to rotate a moving animated sprite based on the coordinates of its destination My application fires up sprite instances around a Canvas which then move across the screen towards.. destination My application fires up sprite instances around a Canvas which then move across the screen towards a x y coordinate. I would like to be able to rotate the sprite around its center so that it faces its destination coordinates. I am using.. a x y coordinate. I would like to be able to rotate the sprite around its center so that it faces its destination coordinates. I am using a sprite sheet and have had issues with clipping. I have also found a lot of good examples but nothing seems..
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 time then move to other floor by using scroll bar . But.. don't know how to display it. I can get the current location coordinate via WiFi but don't know how to put it into still image to mark the current location . For sure there is already look a like..
Android Camera will not work. startPreview fails http://stackoverflow.com/questions/7942378/android-camera-will-not-work-startpreview-fails vertices vbb.asFloatBuffer create a floating point buffer from the ByteBuffer vertices.put triangleCoords add the coordinates to the FloatBuffer vertices.position 0 set the buffer to read the first coordinate initialize vertex Buffer for texcoords.. triangleCoords add the coordinates to the FloatBuffer vertices.position 0 set the buffer to read the first coordinate initialize vertex Buffer for texcoords vbb ByteBuffer.allocateDirect texcoordf.length 4 vbb.order ByteOrder.nativeOrder.. order texcoords vbb.asFloatBuffer create a floating point buffer from the ByteBuffer texcoords.put texcoordf add the coordinates to the FloatBuffer texcoords.position 0 set the buffer to read the first coordinate private static String readFile String..
How to find absolute position of click while zoomed in http://stackoverflow.com/questions/8180442/how-to-find-absolute-position-of-click-while-zoomed-in my problem described in three separate ways. Hopefully should help people to answer. Problem How do you find a pair of coordinate expressed in canvas userspace when you only have the coordinate expressed in terms of a zoomed image given the original.. people to answer. Problem How do you find a pair of coordinate expressed in canvas userspace when you only have the coordinate expressed in terms of a zoomed image given the original scale point scale factor Problem in practice I'm currently trying.. with the zoom moving towards the midpoint of the pinch. On down I save the centre point of the zoom which is in X Y coordinates based on the current screen . I then have this function act when a scale gesture is detected class ImageScaleGestureDetector..
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