public static Direction2D?To2D(this Direction direction)
{
if (Math.Abs(direction.Z) > ZeroDotProductTolerance)
{
throw new Exception("Expected direction to be zero in the z coordinate.");
}
if (direction.HasDirection())
{
return(Direction2D.Create(direction.X, direction.Y));
}
return(null);
}
/// <summary> /// Construct the angle from the positive x-axis to the specified point. /// </summary> public static DecomposedAngle?FromPositiveX(Distance x, Distance y) => Direction2D.Create(x, y)?.AngleFromPositiveX();
/// <summary>
/// Construct the counterclockwise angle from the positive x-axis to the specified point, or throw an
/// <see cref="Exception"/> if the point is too close to the origin.
/// </summary>
public DecomposedAngle(double x, double y)
: this(Direction2D.Create(x, y))
{
}