/// <summary>
/// Gets the approximate bounds for this line after it has been transformed by the given <paramref name="transform" />.
/// The rectangle returned should equal or contain the actual bounds.
/// </summary>
/// <param name="transform">The transform to apply to the line.</param>
/// <returns></returns>
public Rectangle GetApproximateBounds(Matrix3x2 transform)
{
Vector2 start = Vector2.Transform(Start, transform);
Vector2 end = Vector2.Transform(End, transform);
Vector2 zero = Vector2.Transform(Vector2.Zero, transform);
Vector2 rad = Vector2.Transform(Radius, transform);
rad = Radius * (Vector2.Distance(zero, rad) / Radius.Length());
return(new Rectangle(start, Vector2.Zero)
.Expand(end)
.Expand(start + rad)
.Expand(end + rad)
.Expand(start - rad)
.Expand(end - rad));
}
/// <summary>
/// Adds the line to the given <paramref name="path" /> after transforming it by the given
/// <paramref name="transform" />.
/// </summary>
/// <param name="path">The path to add the line to.</param>
/// <param name="transform">The transform.</param>
public void AddToPath(IGraphicsPath path, Matrix3x2 transform)
{
Vector2 zero = Vector2.Transform(Vector2.Zero, transform);
Vector2 rad = Vector2.Transform(Radius, transform);
rad = Radius * (Vector2.Distance(zero, rad) / Radius.Length());
Vector2 angVec = Vector2.Transform(new Vector2(0, 1), Matrix3x2.CreateRotation(Angle) * transform);
float ang = AngleBetween(new Vector2(0, 1), angVec - zero);
path.AddArc(
Vector2.Transform(End, transform),
rad,
ang,
Clockwise /* TODO probably need to work this out somehow */,
IsLarge);
}