/// <summary>
/// Checks whether the given <see cref="GreatCircleSegment"/> intersects with this <see cref="GreatCicle"/>.
/// The point of intersection can then be found in the out-Parameter.
/// </summary>
/// <param name="arc">The arc segment to be checked.</param>
/// <param name="intersection">The point of intersection, if they intersect.</param>
/// <returns>Whether the <see cref="GreatCircleSegment"/> intersects this <see cref="GreatCircle"/> or not.</returns>
public bool Intersects(GreatCircleSegment arc, out SphereCoordinate intersection)
{
intersection = default(SphereCoordinate);
CartesianVector possibleIntersection;
if (!Intersects(arc.BaseCircle, out possibleIntersection))
{
return(false);
}
if (arc.IsOnArc(possibleIntersection))
{
intersection = possibleIntersection;
return(true);
}
if (arc.IsOnArc(-possibleIntersection))
{
intersection = -possibleIntersection;
return(true);
}
return(false);
}
/// <summary>
/// Checks whether the given <see cref="GreatCircleSegment"/> intersects with this one.
/// The point of intersection can then be found in the out-Parameter.
/// </summary>
/// <param name="other">The arc segment to be checked.</param>
/// <param name="intersection">The point of intersection, if they intersect.</param>
/// <returns>Whether the two <see cref="GreatCircleSegment"/>s intersect or not.</returns>
public bool Intersects(GreatCircleSegment other, out SphereCoordinate intersection)
{
// http://www.boeing-727.com/Data/fly%20odds/distance.html
intersection = default(SphereCoordinate);
if (Length.IsAlmostEqualTo(0) || other.Length.IsAlmostEqualTo(0))
{
return(false);
}
CartesianVector possibleIntersection1;
if (!BaseCircle.Intersects(other.BaseCircle, out possibleIntersection1))
{
return(false);
}
var possibleIntersection2 = -possibleIntersection1;
if (IsOnArc(possibleIntersection1) && other.IsOnArc(possibleIntersection1))
{
intersection = possibleIntersection1;
return(true);
}
if (IsOnArc(possibleIntersection2) && other.IsOnArc(possibleIntersection2))
{
intersection = possibleIntersection2;
return(true);
}
return(false);
}
/// <summary>
/// Checks whether the given <see cref="GreatCircleSegment"/> intersects with this one.
/// The point of intersection can then be found in the out-Parameter.
/// </summary>
/// <param name="other">The arc segment to be checked.</param>
/// <param name="intersection">The point of intersection, if they intersect.</param>
/// <returns>Whether the two <see cref="GreatCircleSegment"/>s intersect or not.</returns>
public bool Intersects(GreatCircleSegment other, out SphereCoordinate intersection)
{
// http://www.boeing-727.com/Data/fly%20odds/distance.html
intersection = default(SphereCoordinate);
if (Length.IsAlmostEqualTo(0) || other.Length.IsAlmostEqualTo(0))
return false;
CartesianVector possibleIntersection1;
if (!BaseCircle.Intersects(other.BaseCircle, out possibleIntersection1))
return false;
var possibleIntersection2 = -possibleIntersection1;
if (IsOnArc(possibleIntersection1) && other.IsOnArc(possibleIntersection1))
{
intersection = possibleIntersection1;
return true;
}
if (IsOnArc(possibleIntersection2) && other.IsOnArc(possibleIntersection2))
{
intersection = possibleIntersection2;
return true;
}
return false;
}
/// <summary>
/// Checks whether the given <see cref="GreatCircleSegment"/> intersects with this <see cref="GreatCicle"/>.
/// The point of intersection can then be found in the out-Parameter.
/// </summary>
/// <param name="arc">The arc segment to be checked.</param>
/// <param name="intersection">The point of intersection, if they intersect.</param>
/// <returns>Whether the <see cref="GreatCircleSegment"/> intersects this <see cref="GreatCircle"/> or not.</returns>
public bool Intersects(GreatCircleSegment arc, out SphereCoordinate intersection)
{
intersection = default(SphereCoordinate);
CartesianVector possibleIntersection;
if (!Intersects(arc.BaseCircle, out possibleIntersection))
return false;
if (arc.IsOnArc(possibleIntersection))
{
intersection = possibleIntersection;
return true;
}
if (arc.IsOnArc(-possibleIntersection))
{
intersection = -possibleIntersection;
return true;
}
return false;
}