/// <summary>
/// Gets the relative point inside of the viewport represented by the plotted Point
/// </summary>
/// <param name="plottedPoint">Coordinate absolute position <see cref="PointF"/></param>
/// <param name="viewPortExtent">Viewport <see cref="SizeF"/></param>
/// <returns>Relative position</returns>
public static PointF GetRelativePosition(PointF plottedPoint, SizeF viewPortExtent)
{
var actualResult = plottedPoint;
if (plottedPoint.X >= viewPortExtent.GetCenterWidth())
{
actualResult.X = plottedPoint.X - viewPortExtent.GetCenterWidth();
}
else
{
actualResult.X = NEGATIVE * (viewPortExtent.GetCenterWidth() - plottedPoint.X);
}
actualResult.Y = viewPortExtent.GetCenterHeight() - plottedPoint.Y;
return(actualResult);
}
/// <summary>
/// Find all contacts on the radar using a point and detection window
/// </summary>
/// <param name="checkPoint"><see cref="PointF"/>The center point of the search</param>
/// <param name="detectionWindow"><see cref="SizeF"/>The size of the detction window</param>
/// <param name="roundingDigits"></param>
/// <returns><see cref="List{Contact}"/></returns>
public List <IContact> FindContact(PointF checkPoint, SizeF detectionWindow, int roundingDigits)
{
var contactList = new List <IContact>();
checkPoint.Offset(new PointF(-1 * detectionWindow.GetCenterWidth(), -1 * detectionWindow.GetCenterHeight()), roundingDigits);
var detectionArea = new RectangleF(checkPoint, detectionWindow);
if (Logger.IsDebugEnabled)
{
Logger.Debug($"FindWindow: {detectionArea}");
}
// First check for any hits
if (CurrentContacts.Values.Any(contact =>
{
return(detectionArea.IntersectsWith(contact.DetectionWindow));
}) == true)
{
Logger.Info($"Contact(s) found");
// There were hits so get the contacts
contactList.AddRange(CurrentContacts.Values.ToList().FindAll(match =>
{
return(detectionArea.IntersectsWith(match.DetectionWindow));
}));
}
if (contactList.Count > 0)
{
Logger.Info($"Found {contactList.Count} contact(s) in {detectionArea}");
if (Logger.IsDebugEnabled)
{
contactList.ForEach(contact =>
{
Logger.Debug($"{contact}");
});
}
}
else
{
Logger.Info($"No contacts found in {detectionArea}");
}
return(contactList);
}
/// <summary>
/// Converts a position relative to (0,0) in the center of the view port to an absolute position from (0,0) from the top left corner of the viewport
/// </summary>
/// <param name="relativePosition">The relative position from (0,0) in the ViewPortExtent <see cref="PointF"/></param>
/// <param name="viewPortExtent">The ViewPortExtent <seealso cref="Size"/></param>
/// <returns>Absolute Postition</returns>
public static PointF GetAbsolutePosition(PointF relativePosition, SizeF viewPortExtent)
{
var actualResult = relativePosition;
var midX = viewPortExtent.GetCenterWidth();
var midY = viewPortExtent.GetCenterHeight();
if (relativePosition.Y <= 0)
{
actualResult.Y = midY + Math.Abs(relativePosition.Y);
}
else
{
actualResult.Y = midY - relativePosition.Y;
}
actualResult.X = midX + relativePosition.X;
return(actualResult);
}
