using System.Drawing;
using gaemstone.ECS;
using Silk.NET.Maths;

namespace gaemstone.Client;

[Component]
public readonly struct TextureCoords4
{
	public Vector2D<float> TopLeft { get; }
	public Vector2D<float> TopRight { get; }
	public Vector2D<float> BottomLeft { get; }
	public Vector2D<float> BottomRight { get; }

	public TextureCoords4(float x1, float y1, float x2, float y2)
	{
		TopLeft     = new(x1, y1);
		TopRight    = new(x2, y1);
		BottomLeft  = new(x1, y2);
		BottomRight = new(x2, y2);
	}

	public static TextureCoords4 FromIntCoords(Size textureSize, Point origin, Size size)
		=> FromIntCoords(textureSize, origin.X, origin.Y, size.Width, size.Height);
	public static TextureCoords4 FromIntCoords(Size textureSize, int x, int y, int width, int height) => new(
		 x / (float)textureSize.Width + 0.001F,
		 y / (float)textureSize.Height + 0.001F,
		(x + width) / (float)textureSize.Width - 0.001F,
		(y + height) / (float)textureSize.Height - 0.001F);

	public static TextureCoords4 FromGrid(int numCellsX, int numCellsY, int cellX, int cellY) => new(
		 cellX / (float)numCellsX + 0.001F,
		 cellY / (float)numCellsY + 0.001F,
		(cellX + 1) / (float)numCellsX - 0.001F,
		(cellY + 1) / (float)numCellsY - 0.001F);
}