using System.Numerics;
using Silk.NET.Maths;

namespace Nebulix
{
	public static class ArrayExtensions
	{
		/// <summary>
		/// Copies the given arrays to the start of this array. The order of <paramref name="arrays"/> is preserved
		/// </summary>
		/// <param name="arrays">The arrays copied into this array</param>
		public static void CopyFrom(this Array array, params Array[] arrays)
		{
			int lastIndex = 0;
			for (int i = 0; i < arrays.Length; i++)
			{
				arrays[i].CopyTo(array, lastIndex);
				lastIndex += arrays[i].Length;
			}
		}

		public static T[] ExtractComponents<T>(this Vector3D<T>[] array) where T : unmanaged, IFormattable, IEquatable<T>, IComparable<T>
		{
			T[] result = new T[array.Length * 3]; // * 3 cause a Vector3D has 3 components
			int resultIdx = 0;
			for (int i = 0; i < array.Length; i++)
			{
				result[resultIdx] = array[i].X;
				result[resultIdx + 1] = array[i].Y;
				result[resultIdx + 2] = array[i].Z;
			}

			return result;
		}
	}
}