/// <summary>
/// Writes the given <see cref="Polygon2i"/> to an <see cref="Ibasa.IO.BinaryWriter">.
/// </summary>
public static void Write(this Ibasa.IO.BinaryWriter writer, Polygon2i polygon)
{
var array = polygon.ToArray();
writer.Write(array.Length);
foreach(var point in array)
{
writer.Write(point);
}
}
/// <summary>
/// Projects a polygon onto an axis.
/// </summary>
/// <param name="polygon">The polygon to project.</param>
/// <param name="axis">The axis to project onto.</param>
/// <returns>The interval on the axis that the polygon projects onto.</returns>
public static Linei Project(Polygon2i polygon, Vector2i axis)
{
var min = int.MaxValue;
var max = int.MinValue;
for (int i=0; i < polygon.Count; ++i)
{
var proj = Vector.Dot((Vector2i)polygon[i], axis);
min = Functions.Min(min, proj);
max = Functions.Max(max, proj);
}
return new Linei(min, max);
}
/// <summary>
/// Returns a value that indicates whether two polygons are equal.
/// </summary>
/// <param name="left">The first polygon to compare.</param>
/// <param name="right">The second polygon to compare.</param>
/// <returns>true if the left and right are equal; otherwise, false.</returns>
public static bool Equals(Polygon2i left, Polygon2i right)
{
return left == right;
}
