//private void SystemPreferences_PropertyChanged(object sender, PropertyChangedEventArgs e)
//{
// if (e.PropertyName == "RouteSettings.ShowGPSPoints" ||
// e.PropertyName == "RouteSettings.MarkerShape" ||
// e.PropertyName == "RouteSettings.MarkerSize" ||
// e.PropertyName == "RouteSettings.MarkerColor")
// {
// if (RouteControl.Visible)
// {
// RefreshOverlays();
// }
// else
// {
// routeSettingsChanged = true;
// }
// }
//}
//private void OnRouteItemsPropertyChanged(object sender, PropertyChangedEventArgs e)
//{
// if (e.PropertyName == Activity.PropertyName.GPSRoute ||
// e.PropertyName == Route.PropertyName.GPSRoute ||
// e.PropertyName == Activity.PropertyName.Category )
// {
// ClearCachedLocations();
// RefreshOverlays();
// }
//}
private static void pixelSize(IMapControl mapControl, out float x, out float y)
{
//Use an "arbitrary" circlePixelSize to find the distance/size for a pixel - can differ X and Y
//TBD: Cache per zoom level
const int circlePixelSize = 1000;
IGPSPoint point0 = Utils.GPS.LocationToPoint(mapControl.MapProjection.PixelToGPS(mapControl.Center, mapControl.Zoom,
new Point(0, 0)));
IGPSPoint pointX = Utils.GPS.LocationToPoint(mapControl.MapProjection.PixelToGPS(mapControl.Center, mapControl.Zoom,
new Point(circlePixelSize / 2, 0)));
IGPSPoint pointY = Utils.GPS.LocationToPoint(mapControl.MapProjection.PixelToGPS(mapControl.Center, mapControl.Zoom,
new Point(0, circlePixelSize / 2)));
x = (float)circlePixelSize / point0.DistanceMetersToPoint(pointX);
y = (float)circlePixelSize / point0.DistanceMetersToPoint(pointY);
}
public static float DistanceMetersToPointGpsSimple(IGPSPoint point, IGPSPoint point2)
{
#if NO_SIMPLE_DISTANCE
return(point.DistanceMetersToPoint(point2));
#else
float _cosmean = (float)Math.Cos(point2.LatitudeDegrees * DegToRad);
float dlat = point.LatitudeDegrees - point2.LatitudeDegrees;
float dlon = point.LongitudeDegrees - point2.LongitudeDegrees;
float result = dlat * dlat + dlon * dlon * _cosmean;
#if SQUARE_DISTANCE
return(result);
#else
return(EarthRadius * DegToRad * (float)Math.Sqrt(result));
#endif
#endif
}
public void Draw(IMapDrawContext drawContext)
{
if (m_CaptureSelectedGPSLocations)
{
m_CaptureSelectedGPSLocations = false;
if (m_SelectedGPSLocations.Count != MapControl.Selected.Count)
{
m_SelectedGPSLocations = getSelectedGPSLocations(drawContext);
SelectedGPSLocationsChanged(this, new System.EventArgs());
}
}
if (_showPage)
{
//drawContext.Center
IGPSLocation loc1 = drawContext.Projection.PixelToGPS(drawContext.Center, drawContext.ZoomLevel, new Point(0, 0));
IGPSLocation loc2 = drawContext.Projection.PixelToGPS(drawContext.Center, drawContext.ZoomLevel, new Point(0, 100));
IGPSPoint point1 = Utils.GPS.LocationToPoint(loc1);
IGPSPoint point2 = Utils.GPS.LocationToPoint(loc2);
float meters = point1.DistanceMetersToPoint(point2) / 100;
float radiusInPixels = m_highlightRadius / meters;
foreach (TrailGPSLocation gpsLocation in m_TrailPoints)
{
Point point = drawContext.Projection.GPSToPixel(drawContext.Center, drawContext.ZoomLevel, gpsLocation.GpsLocation);
Pen pen = new Pen(Color.Red, 5.0F);
drawContext.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
float X = point.X + (drawContext.DrawRectangle.Width / 2) - radiusInPixels;
float Y = point.Y + (drawContext.DrawRectangle.Height / 2) - radiusInPixels;
if (X > 0 && X < 1000 && Y > 0 && Y < 1000)
{
//Prevent crashes at large elipses
drawContext.Graphics.DrawEllipse(pen, X, Y, radiusInPixels * 2, radiusInPixels * 2);
}
}
}
}
//Get a close enough point, not necessarily the closest or best match
public int getClosePoint(IGPSPoint point)
{
IList<int> result = new List<int>();
int x = (int)Math.Floor(point.LongitudeDegrees / m_lngWidth);
int y = (int)Math.Floor(point.LatitudeDegrees / m_latWidth);
foreach (int i in new int[] { x, x - 1, x + 1 })
{
if (m_Grid.ContainsKey(i))
{
foreach (int j in new int[] { y, y - 1, y + 1 })
{
if (m_Grid[i].ContainsKey(j))
{
foreach (int p in m_Grid[i][j])
{
IGPSPoint pointInGrid = m_Route[p].Value;
double diffDist = point.DistanceMetersToPoint(pointInGrid);
if (diffDist < m_Distance)
{
return p;
}
}
}
}
}
}
return -1;
}
//Get all points close to the asking point, but merge in "stretches" to let caller find best match
public IList<IndexDiffDist> getAllCloseStretch(IGPSPoint point)
{
const int boxsize = 2;
IList<IndexDiffDist> result = new List<IndexDiffDist>();
int x = (int)Math.Floor(point.LongitudeDegrees / m_lngWidth);
int y = (int)Math.Floor(point.LatitudeDegrees / m_latWidth);
for (int i = x - boxsize; i <= x + boxsize; i++)
{
if (m_Grid.ContainsKey(i))
{
for (int j = y - boxsize; j <= y + boxsize; j++)
{
if (m_Grid[i].ContainsKey(j))
{
foreach (int p in m_Grid[i][j])
{
IGPSPoint pointInGrid = m_Route[p].Value;
double diffDist = point.DistanceMetersToPoint(pointInGrid);
if (diffDist < m_Distance)
{
double totDist = double.MaxValue;
if (null != m_Dist)
{
totDist = m_Dist[p].Value;
}
IndexDiffDist t = new IndexDiffDist(p, p, p, diffDist, totDist);
result.Add(t);
}
}
}
}
}
}
//Group the results with local minimums in "stretches"
//Only directly adjacent stretches are merged now, so single points out of the box will split stretches
if (result.Count > 0)
{
for (int i = 0; i < result.Count; i++)
{
for (int j = 0; j < result.Count; j++)
{
if (i != j && result[i].Index > -1 && result[j].Index > -1)
{
int k = Math.Min(i, j);
int l = Math.Max(i, j);
//Try merge with lower
if ((result[k].high + 1 >= result[l].low && result[k].high <= result[l].high) ||
Math.Abs(result[k].Dist - result[l].Dist) < m_Distance)
{
int tmp;
if (result[k].Diff < result[l].Diff)
{
//Use lower also at equal
tmp = k;
result[l].Index = -1;
}
else
{
tmp = l;
result[k].Index = -1;
}
result[tmp].low = Math.Min(result[i].low, result[j].low);
result[tmp].high = Math.Max(result[i].high, result[j].high);
}
}
}
}
for (int i = result.Count-1; i >= 0; i--)
{
if (result[i].Index == -1)
{
result.RemoveAt(i);
}
}
}
return result;
}
public float DistanceMetersToPoint(IGPSPoint point) {
GPSPoint thisPoint = new GPSPoint(
this.LatitudeDegrees,
this.LongitudeDegrees,
0);
if (point == null)
{
return float.MaxValue;
}
return point.DistanceMetersToPoint(thisPoint);
}