public static Visibility IsPoiVisible(PoiViewItem item, ElevationProfileData elevationProfileData)
{
if (elevationProfileData == null)
{
return(Visibility.Visible);
}
var leftPoints = elevationProfileData.GetData((int)item.GpsLocation.Bearing);
var rightPoints = elevationProfileData.GetData((int)GpsUtils.Normalize360(item.GpsLocation.Bearing.Value + 1));
if (leftPoints == null || rightPoints == null)
{
return(Visibility.Visible);
}
var maxLeft = new GpsLocation()
{
VerticalViewAngle = -100, Distance = 100
};
var leftPoints2 = leftPoints.GetPoints().Where(p => p.Distance < item.GpsLocation.Distance);
if (leftPoints2.Any())
{
maxLeft = leftPoints2.Aggregate((max, item2) => item2?.VerticalViewAngle > max?.VerticalViewAngle ? item2 : max);
}
var maxRight = new GpsLocation()
{
VerticalViewAngle = -100, Distance = 100
};
var rightPoints2 = rightPoints.GetPoints().Where(p => p.Distance < item.GpsLocation.Distance);
if (rightPoints2.Any())
{
maxRight = rightPoints2.Aggregate((max, item2) => item2?.VerticalViewAngle > max?.VerticalViewAngle ? item2 : max);
}
var maxViewAngle = maxRight.VerticalViewAngle > maxLeft.VerticalViewAngle ? maxRight : maxLeft;
var itemViewAngle = item.VerticalViewAngle;
var viewAngleDiff = item.VerticalViewAngle - maxViewAngle.VerticalViewAngle;
var viewAngleDistance = item.GpsLocation.Distance - maxViewAngle.Distance;
var viewAngleVisibilityLimit = -(itemViewAngle * 0.01 + 0.0);
var viewAnglePartVisibilityLimit = -(itemViewAngle * 0.2 + 1.0);
var distancePartVisibilityLimit = 2000;//m
if (viewAngleDiff > viewAngleVisibilityLimit)
{
return(Visibility.Visible);
}
if (viewAngleDiff > viewAnglePartVisibilityLimit && viewAngleDistance < distancePartVisibilityLimit)
{
return(Visibility.PartialyVisible);
}
return(Visibility.Invisible);
}
public void GenerateElevationProfile3(GpsLocation myLocation, double visibility, ElevationProfileData elevationData, Action <int> onProgressChange)
{
_elevationProfileData = new ElevationProfileData(myLocation, visibility);
int progress = 0;
foreach (var group in elevationData.GetData())
{
progress++;
onProgressChange(progress);
var points = group.GetPoints()
.Where(i => i.Distance > MIN_DISTANCE && i.Distance < visibility * 1000)
.OrderBy(i => i.Distance);
//Select visible points
List <GpsLocation> tmpVisiblePoints = new List <GpsLocation>();
double maxViewAngle = -90;
foreach (var point in points)
{
if (point.VerticalViewAngle > maxViewAngle)
{
tmpVisiblePoints.Add(point);
maxViewAngle = point.VerticalViewAngle.Value;
}
}
//Change order (now from the furthest to the nearest)
tmpVisiblePoints.Reverse();
//... and ignore points on descending slope
GpsLocation lastPoint = null;
GpsLocation lastAddedPoint = null;
var ed = new ElevationData(group.Angle);
foreach (var point in tmpVisiblePoints)
{
if (lastPoint == null)
{
ed.Add(point);
lastAddedPoint = point;
lastPoint = point;
continue;
}
//TODO: comment-out the folowing if for full rendering
var distanceDiff = lastPoint.Distance.Value - point.Distance.Value;
if (distanceDiff < lastPoint.Distance / 100 + 50)
{
lastPoint = point;
continue;
}
ed.Add(point);
lastAddedPoint = point;
lastPoint = point;
}
_elevationProfileData.Add(ed);
}
}
void PaintProfile2(PaintEventArgs e)
{
List <GpsLocation> lst;
if (elevationProfileNew == null)
{
return;
}
var pen = new Pen(Brushes.Black, 3);
var data = elevationProfileNew.GetData();
for (ushort i = 0; i < 360; i++)
{
var thisAngle = elevationProfileNew.GetData(i);
var prevAngle = elevationProfileNew.GetData(i - 1);
if (thisAngle != null && prevAngle != null)
{
foreach (var point in thisAngle.GetPoints())
{
foreach (var otherPoint in prevAngle.GetPoints())
{
if (Math.Abs(point.Distance.Value - otherPoint.Distance.Value) < point.Distance / _minDist)
{
var b1 = GpsUtils.Normalize360(point.Bearing.Value - _heading);
var x1 = GpsUtils.Normalize360(b1 + 35) * DG_WIDTH;
var y1 = 250 - point.VerticalViewAngle.Value * 40;
var b2 = GpsUtils.Normalize360(otherPoint.Bearing.Value - _heading);
var x2 = GpsUtils.Normalize360(b2 + 35) * DG_WIDTH;
var y2 = 250 - otherPoint.VerticalViewAngle.Value * 40;
if (Math.Sqrt(Math.Pow(x1 - x2, 2) + Math.Pow(y1 - y2, 2)) < 100)
{
e.Graphics.DrawLine(pen, (float)x1, (float)y1, (float)x2, (float)y2);
}
}
}
}
}
}
}
public void GenerateElevationProfileLines(ElevationProfileData epd, double displayWidth, double displayHeight)
{
/*foreach(var ed in epd.GetData())
* {
* var edMaxDist = ed.GetPoints().Max(p => p.Distance.Value);
* if (edMaxDist > maxDist)
* {
* maxDist = edMaxDist;
* }
* }*/
List <ProfileLine> listOfLines = new List <ProfileLine>();
for (ushort i = 0; i < 360; i++)
{
var thisAngle = epd.GetData(i);
var prevAngle = epd.GetData(i - 1);
if (thisAngle != null && prevAngle != null)
{
foreach (var point in thisAngle.GetPoints())
{
var otherPoint = prevAngle.GetPoints()
.Where(x => Math.Abs(point.Distance.Value - x.Distance.Value) <= point.Distance.Value / 12)
.OrderBy(x => Math.Abs(point.Distance.Value - x.Distance.Value))
.FirstOrDefault();
if (otherPoint != null)
{
var y1 = point.VerticalViewAngle.Value;
var x1 = (float)point.Bearing.Value;
var y2 = otherPoint.VerticalViewAngle.Value;
var x2 = (float)otherPoint.Bearing.Value;
listOfLines.Add(new ProfileLine {
Bearing1 = x1, Bearing2 = x2, VerticalViewAngle1 = (float)y1, VerticalViewAngle2 = (float)y2, distance = point.Distance.Value
});
}
}
}
}
_context.ListOfProfileLines = listOfLines;
}