/**
* @param x
* @param y
* @param finish
*/
private void rubberBand(float x, float y, boolean finish) {
// Rubberbanding
if (mDragPlanPoint >= 0 && mService.getPlan() != null) {
// Threshold for movement
float movementx = Math.abs(x - mDragStartedX);
float movementy = Math.abs(y - mDragStartedY);
if ((movementx > MOVEMENT_THRESHOLD * mDipToPix)
|| (movementy > MOVEMENT_THRESHOLD * mDipToPix)) {
/*
* Do something to plan
* This is the new location
*/
double lon = mOrigin.getLongitudeOf(x);
double lat = mOrigin.getLatitudeOf(y);
mService.getPlan().replaceDestination(mPref, mDragPlanPoint, lon, lat, finish);
// This will not snap again
mDragStartedX = -1000;
mDragStartedY = -1000;
}
}
}
/**
* @param canvas
* @param ctx
*/
private void drawTrack(Canvas canvas, DrawingContext ctx) {
TrackShape.draw(
ctx,
mService.getPlan(),
mService.getDestination(),
mGpsParams,
mLineBitmap,
mLineHeadingBitmap,
mPointProjection == null);
}
/**
* Update the current speed, lat, lon, that will update ETA, distance and bearing to the
* destination
*
* @param params
*/
public void updateTo(GpsParams params) {
/*
*/
double mLon = params.getLongitude();
double mLat = params.getLatitude();
double speed = params.getSpeed();
mDeclination = params.getDeclinition();
if (!mFound) {
return;
}
if (!mInited) {
mLonInit = mLon;
mLatInit = mLat;
mInited = true;
}
/*
* Project and find distance
*/
Projection p = new Projection(mLon, mLat, mLond, mLatd);
mDistance = p.getDistance();
mBearing = p.getBearing();
// in flying mode, calculate time based on ground speed from GPS
mGroundSpeed = speed;
mWca = 0;
mCrs = mBearing;
if (mPref.isSimulationMode()) {
double ws = 0;
double wd = 0;
if (mWinds != null) {
double winds[] = mWinds.getWindAtAltitude(params.getAltitude());
ws = winds[0];
wd = winds[1];
}
// in sim mode, do planning with winds
speed = mPref.getAircraftTAS(); // in sim mode, use preferred TAS
// from aviation formulary
double hd = mBearing;
mGroundSpeed =
Math.sqrt(
ws * ws + speed * speed - 2 * ws * speed * Math.cos((hd - wd) * Math.PI / 180.0));
mWca =
-Math.toDegrees(
Math.atan2(
ws * Math.sin((hd - wd) * Math.PI / 180.0),
speed - ws * Math.cos((hd - wd) * Math.PI / 180.0)));
mCrs = (hd + mWca + 360) % 360;
} else if (mPref.useBearingForETEA() && (!mService.getPlan().isActive())) {
// This is just when we have a destination set and no plan is active
// We can't assume that we are heading DIRECTLY for the destination, so
// we need to figure out the multiply factor by taking the COS of the difference
// between the bearing and the heading.
double angDif = Helper.angularDifference(params.getBearing(), mBearing);
double xFactor = 1;
// If the difference is 90 or greater, then ETE means nothing as we are not
// closing on the target
if (angDif < 90) {
// Calculate the actual relative speed closing on the target
xFactor = Math.cos(angDif * Math.PI / 180);
}
mGroundSpeed *= xFactor;
}
/*
* ETA when speed != 0
*/
mEte = Helper.calculateEte(mDistance, mGroundSpeed, 0, true);
if (mGroundSpeed == 0) {
mEteSec = Long.MAX_VALUE;
mFuelGallons = Float.MAX_VALUE;
mFuel = "-.-";
} else {
mEteSec = (long) (mDistance / mGroundSpeed * 3600);
mFuelGallons = (float) mEteSec / 3600 * mPref.getFuelBurn();
mFuel = String.valueOf((float) Math.round(mFuelGallons * 10.f) / 10.f);
}
// Calculate the time of arrival at our destination. We SHOULD be taking in to account
// the timezone at that location
mEta = Helper.calculateEta(Calendar.getInstance().getTimeZone(), mDistance, mGroundSpeed);
}
/* (non-Javadoc)
* @see android.view.View.OnTouchListener#onTouch(android.view.View, android.view.MotionEvent)
*/
@Override
public boolean onTouch(View view, MotionEvent e) {
boolean bPassToGestureDetector = true;
if (e.getAction() == MotionEvent.ACTION_UP) {
/** Rubberbanding */
rubberBand(e.getX(), e.getY(), true);
/*
* Drag stops for rubber band
*/
mDragPlanPoint = -1;
/*
* Do not draw point. Only when long press and down.
*/
mPointProjection = null;
/*
* Now that we have moved passed the macro level, re-query for new tiles.
* Do not query repeatedly hence check for mFactor = 1
*/
if (mMacro != mScale.getMacroFactor()) {
loadTiles();
}
} else if (e.getAction() == MotionEvent.ACTION_DOWN) {
if (mService != null) {
/*
* Find if this is close to a plan point. Do rubber banding if true
* This is where rubberbanding starts
*/
if (mService.getPlan() != null && mDragPlanPoint < 0 && mPref.allowRubberBanding()) {
double lon = mOrigin.getLongitudeOf(e.getX());
double lat = mOrigin.getLatitudeOf(e.getY());
mDragPlanPoint = mService.getPlan().findClosePointId(lon, lat, mScale.getScaleFactor());
mDragStartedX = e.getX();
mDragStartedY = e.getY();
}
}
mGestureCallBack.gestureCallBack(GestureInterface.TOUCH, (LongTouchDestination) null);
// Remember this point so we can make sure we move far enough before losing the long press
mDoCallbackWhenDone = false;
mDownFocusPoint = getFocusPoint(e);
startClosestAirportTask(e.getX(), e.getY());
} else if (e.getAction() == MotionEvent.ACTION_MOVE) {
if (mDownFocusPoint != null) {
Point fp = getFocusPoint(e);
final int deltaX = fp.x - mDownFocusPoint.x;
final int deltaY = fp.y - mDownFocusPoint.y;
int distanceSquare = (deltaX * deltaX) + (deltaY * deltaY);
bPassToGestureDetector = distanceSquare > mTouchSlopSquare;
}
// Rubberbanding, intermediate
rubberBand(e.getX(), e.getY(), false);
}
if (bPassToGestureDetector) {
// Once we break out of the square or stop the long press, keep sending
if (e.getAction() == MotionEvent.ACTION_MOVE || e.getAction() == MotionEvent.ACTION_UP) {
mDownFocusPoint = null;
mPointProjection = null;
if (mClosestTask != null) {
mClosestTask.cancel(true);
}
}
mGestureDetector.onTouchEvent(e);
}
return mMultiTouchC.onTouchEvent(e, mScale.getMaxScale(), mScale.getMinScale(), mMacro);
}