/// <summary>
/// Constructs a mesh from the given polygon via <see cref="Polygon.Triangulate()"/>. <para/>
/// UV coordinates are the normalized polygon within its own bounds.
/// </summary>
/// <param name="polygon">Some polygon.</param>
/// <returns>A new mesh representign the 'filled' space of the polygon.</returns>
public static Mesh CreateFromPolygon(IReadOnlyList <Vector> polygon)
{
if (polygon is null)
{
throw new ArgumentNullException(nameof(polygon));
}
var mesh = new Mesh();
// Compute polygon bounds
var bounds = Rectangle.FromPoints(polygon);
// Add polygon vertices
foreach (var pt in polygon)
{
var uv = (pt - bounds.Min) / (Vector)bounds.Size;
mesh._vertices.Add(new Vertex(pt, uv));
}
// Add triangle indices
foreach (var(a, b, c) in PolygonTools.TriangulateIndices(polygon))
{
mesh._indices.Add((ushort)a);
mesh._indices.Add((ushort)b);
mesh._indices.Add((ushort)c);
}
return(mesh);
}