@Override
protected HttpResult<Iterable<Region>> doInBackground(Void... voids) {
Projection projection = mapView.getProjection();
// We want to download data that's off screen so the user can see something while panning
GeoPoint northWest = projection.fromPixels(-mapView.getWidth(), -mapView.getHeight());
GeoPoint southEast = projection.fromPixels(2 * mapView.getWidth(), 2 * mapView.getHeight());
Location northWestLoc = LocationConversionHelper.location(northWest);
Location southEastLoc = LocationConversionHelper.location(southEast);
int size = min(mapView.getWidth(), mapView.getHeight()) / settingsHelper.getHeatMapDensity();
if (size < 1) size = 1;
int gridSizeX = MAP_BUFFER_SIZE * mapView.getWidth() / size;
int gridSizeY = MAP_BUFFER_SIZE * mapView.getHeight() / size;
return averagesDriver.index(
sensorManager.getVisibleSensor(),
northWestLoc.getLongitude(),
northWestLoc.getLatitude(),
southEastLoc.getLongitude(),
southEastLoc.getLatitude(),
gridSizeX,
gridSizeY);
}
/**
* @param canvas
* @param mapView
* @param shadow
* @see TrackingOverlay#draw(Canvas, MapView, boolean)
*/
private void drawDots(Canvas canvas, MapView mapView, boolean shadow) {
this.mCanvas = canvas;
this.mScreenPoint = new Point();
this.mPrevScreenPoint = new Point();
mProjection = mapView.getProjection();
mTopLeft = mProjection.fromPixels(0, 0);
mBottumRight = mProjection.fromPixels(this.mCanvas.getWidth(), this.mCanvas.getHeight());
transformSegmentToCanvasDots();
drawStartStopCircles();
super.draw(this.mCanvas, mapView, shadow);
this.mCanvas = null;
}
/** Either the Path or the Dots are calculated based on he current track coloring method */
private synchronized void calculateTrackAsync() {
GeoPoint oldTopLeft = mGeoTopLeft;
GeoPoint oldBottumRight = mGeoBottumRight;
mGeoTopLeft = mProjection.fromPixels(0, 0);
mGeoBottumRight = mProjection.fromPixels(mWidth, mHeight);
if (mRequeryFlag
|| oldTopLeft == null
|| oldBottumRight == null
|| mGeoTopLeft.getLatitudeE6() / 100 != oldTopLeft.getLatitudeE6() / 100
|| mGeoTopLeft.getLongitudeE6() / 100 != oldTopLeft.getLongitudeE6() / 100
|| mGeoBottumRight.getLatitudeE6() / 100 != oldBottumRight.getLatitudeE6() / 100
|| mGeoBottumRight.getLongitudeE6() / 100 != oldBottumRight.getLongitudeE6() / 100) {
calculateStepSize();
mScreenPoint.x = -1;
mScreenPoint.y = -1;
this.mPrevDrawnScreenPoint.x = -1;
this.mPrevDrawnScreenPoint.y = -1;
switch (mTrackColoringMethod) {
case (DRAW_CALCULATED):
case (DRAW_MEASURED):
case (DRAW_RED):
case (DRAW_GREEN):
calculatePath();
synchronized (mPath) // Switch the fresh path with the old Path object
{
Path oldPath = mPath;
mPath = mPathCalculation;
mPathCalculation = oldPath;
}
break;
case (DRAW_DOTS):
calculateDots();
synchronized (mDotPath) // Switch the fresh path with the old Path object
{
Vector<DotVO> oldDotPath = mDotPath;
mDotPath = mDotPathCalculation;
mDotPathCalculation = oldDotPath;
}
break;
}
mLoggerMap.onDateOverlayChanged();
}
}
/**
* @param canvas
* @param mapView
* @param shadow
* @see TrackingOverlay#draw(Canvas, MapView, boolean)
*/
public void drawPath(Canvas canvas, MapView mapView, boolean shadow) {
this.mCanvas = canvas;
this.mScreenPoint = new Point();
this.mPrevScreenPoint = new Point();
mProjection = mapView.getProjection();
mTopLeft = mProjection.fromPixels(0, 0);
mBottumRight = mProjection.fromPixels(this.mCanvas.getWidth(), this.mCanvas.getHeight());
this.mPath.rewind();
this.mShader = null;
transformSegmentToPath();
// Just the rendering bits left to do
Paint routePaint = new Paint();
routePaint.setPathEffect(new CornerPathEffect(10));
// Log.d( TAG, "Drawing color is "+trackColoringMethod );
switch (trackColoringMethod) {
case (DRAW_CALCULATED):
case (DRAW_MEASURED):
routePaint.setShader(this.mShader);
break;
case (DRAW_RED):
routePaint.setColor(Color.RED);
break;
case (DRAW_GREEN):
default:
routePaint.setColor(Color.GREEN);
break;
}
routePaint.setStyle(Paint.Style.STROKE);
routePaint.setStrokeWidth(8);
routePaint.setAntiAlias(true);
this.mCanvas.drawPath(this.mPath, routePaint);
drawStartStopCircles();
super.draw(this.mCanvas, mapView, shadow);
this.mCanvas = null;
}