private void OnAreaChanged(LatLonRect oldArea, LatLonRect newArea)
{
if ((ZoomLevel < SmallThreshold && lastZoomLevel != -1) || (newArea.Span.Latitude > MAX_LAT_RANGE * 8 || newArea.Span.Longitude > MAX_LON_RANGE * 8))
{
ShownStops.Clear();
PendingRegions.Clear();
}
else
{
IEnumerable <LatLonRect> newRegion;
if (lastZoomLevel < SmallThreshold)
{
newRegion = new LatLonRect[] { newArea }
}
;
else
{
newRegion = oldArea.GetNewRegion(newArea);
}
AppendRegions(newRegion);
if (!IsBusy)
{
RefreshShownStops(TokenSource.Token, !ManuallyDownloadStops);
}
}
lastZoomLevel = ZoomLevel;
}
private void OnAreaChanged(LatLonRect oldArea, LatLonRect newArea)
{
if ((ZoomLevel < SmallThreshold && lastZoomLevel != -1) || (newArea.Span.Latitude > MAX_LAT_RANGE * 8 || newArea.Span.Longitude > MAX_LON_RANGE * 8))
{
ShownStops.Clear();
PendingRegions.Clear();
}
else
{
IEnumerable<LatLonRect> newRegion;
if (lastZoomLevel < SmallThreshold)
newRegion = new LatLonRect[] { newArea };
else
newRegion = oldArea.GetNewRegion(newArea);
AppendRegions(newRegion);
if (!IsBusy)
RefreshShownStops(TokenSource.Token, !ManuallyDownloadStops);
}
lastZoomLevel = ZoomLevel;
}
public void LatLonRect_GetNewRegionTests()
{
LatLonRect rect = new LatLonRect(8, 10, 4, 5);
var reg = rect.GetNewRegion(new LatLonRect(7, 12, 4, 4)).ToList();
var expected = new LatLonRect(7, 12, 4, 10);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion0: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
expected = new LatLonRect(7, 5, 4, 4);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion0: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
if (reg.Count > 0)
{
Assert.Fail($"GetNewRegion0: result contains unexpected entries:{reg.Aggregate("", (acc, rct) => acc + $" ({rct.ToString()})")}.");
}
reg = rect.GetNewRegion(new LatLonRect(9, 12, 1, 1)).ToList();
expected = new LatLonRect(9, 10, 8, 5);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion1: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
expected = new LatLonRect(9, 12, 8, 10);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion1: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
expected = new LatLonRect(8, 12, 4, 10);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion1: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
expected = new LatLonRect(4, 12, 1, 10);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion1: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
expected = new LatLonRect(4, 10, 1, 5);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion1: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
expected = new LatLonRect(4, 5, 1, 1);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion1: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
expected = new LatLonRect(8, 5, 4, 1);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion1: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
expected = new LatLonRect(9, 5, 8, 1);
if (!reg.Contains(expected))
{
Assert.Fail($"GetNewRegion1: expected to contain {expected}, which it does not.");
}
reg.Remove(expected);
if (reg.Count > 0)
{
Assert.Fail($"GetNewRegion1: result contains unexpected entries:{reg.Aggregate("", (acc, rct) => acc + $" ({rct.ToString()})")}.");
}
}