//
//  ExtensionMethods.cs - extension methods for the Multmedia3D plugin
//
//  Author:
//       Michael Becker <alcexhim@gmail.com>
//
//  Copyright (c) 2013-2020 Mike Becker's Software
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.

using Neo;

namespace UniversalEditor
{
	/// <summary>
	/// Extension methods for the Multmedia3D plugin.
	/// </summary>
	public static class ExtensionMethods
	{
		/// <summary>
		/// Writes a series of 2 32-bit Single values as a <see cref="TextureVector2" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static void WriteTextureVector2x32(this IO.Writer bw, TextureVector2 vec)
		{
			bw.WriteSingle((float)vec.U);
			bw.WriteSingle((float)vec.V);
		}

		/// <summary>
		/// Writes a series of 3 32-bit Single values as a <see cref="PositionVector3" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static void WritePositionVector3x32(this IO.Writer bw, PositionVector3 vec)
		{
			bw.WriteSingle((float)vec.X);
			bw.WriteSingle((float)vec.Y);
			bw.WriteSingle((float)vec.Z);
		}
		/// <summary>
		/// Writes a series of 4 32-bit Single values as a <see cref="PositionVector3" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static void WritePositionVector4x32(this IO.Writer bw, PositionVector4 vec)
		{
			bw.WriteSingle((float)vec.X);
			bw.WriteSingle((float)vec.Y);
			bw.WriteSingle((float)vec.Z);
			bw.WriteSingle((float)vec.W);
		}

		/// <summary>
		/// Reads a series of 2 32-bit Single values as a <see cref="TextureVector2" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static TextureVector2 ReadTextureVector2x32(this IO.Reader br)
		{
			float textureU = br.ReadSingle();
			float textureV = br.ReadSingle();
			return new TextureVector2(textureU, textureV);
		}
		/// <summary>
		/// Reads a series of 2 64-bit Double values as a <see cref="TextureVector2" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static TextureVector2 ReadTextureVector2x64(this IO.Reader br)
		{
			double textureU = br.ReadDouble();
			double textureV = br.ReadDouble();
			return new TextureVector2(textureU, textureV);
		}

		/// <summary>
		/// Reads a series of 3 32-bit Single values as a <see cref="PositionVector3" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static PositionVector3 ReadPositionVector3x32(this IO.Reader br)
		{
			float positionX = br.ReadSingle();
			float positionY = br.ReadSingle();
			float positionZ = br.ReadSingle();
			return new PositionVector3(positionX, positionY, positionZ);
		}
		/// <summary>
		/// Reads a series of 3 64-bit Double values as a <see cref="PositionVector3" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static PositionVector3 ReadPositionVector3x64(this IO.Reader br)
		{
			double positionX = br.ReadDouble();
			double positionY = br.ReadDouble();
			double positionZ = br.ReadDouble();
			return new PositionVector3(positionX, positionY, positionZ);
		}
		/// <summary>
		/// Reads a series of 3 32-bit Single values as a <see cref="PositionVector3" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static PositionVector4 ReadPositionVector4x32(this IO.Reader br)
		{
			float positionX = br.ReadSingle();
			float positionY = br.ReadSingle();
			float positionZ = br.ReadSingle();
			float positionW = br.ReadSingle();
			return new PositionVector4(positionX, positionY, positionZ, positionW);
		}
		/// <summary>
		/// Reads a series of 3 64-bit Double values as a <see cref="PositionVector3" />.
		/// </summary>
		/// <param name="br"></param>
		/// <returns></returns>
		public static PositionVector4 ReadPositionVector4x64(this IO.Reader br)
		{
			double positionX = br.ReadDouble();
			double positionY = br.ReadDouble();
			double positionZ = br.ReadDouble();
			double positionW = br.ReadDouble();
			return new PositionVector4(positionX, positionY, positionZ, positionW);
		}

		public static PositionVector2 Transform(this PositionVector2 input, Matrix matrix)
		{
			double newX = input.X * matrix[0, 0] + input.Y * matrix[1, 0] + matrix[3, 0];
			double newY = input.X * matrix[0, 1] + input.Y * matrix[1, 1] + matrix[3, 1];
			return new PositionVector2(newX, newY);
		}
		public static PositionVector2 Rotate(this PositionVector2 input, Matrix matrix)
		{
			double newX = input.X * matrix[0, 0] + input.Y * matrix[1, 0];
			double newY = input.X * matrix[0, 1] + input.Y * matrix[1, 1];
			return new PositionVector2(newX, newY);
		}
	}
}