// ClassicalSharp copyright 2014-2016 UnknownShadow200 | Licensed under MIT
using System;
using System.Drawing;
using ClassicalSharp.GraphicsAPI;

namespace ClassicalSharp {
	
	/// <summary> Contains the information necessary to describe a 2D textured quad. </summary>
	public struct Texture {
		
		public int ID;
		public int X1, Y1;
		public int Width, Height;
		public float U1, V1;
		public float U2, V2;
		
		public Rectangle Bounds { get { return new Rectangle( X1, Y1, Width, Height ); } }

		public Texture( int id, int x, int y, int width, int height, 
		               float u2, float v2 )
			: this( id, x, y, width, height, 0, u2, 0, v2 )	{
		}
		
		public Texture( int id, int x, int y, int width, int height, 
		               TextureRec rec )
			: this( id, x, y, width, height, rec.U1, rec.U2, rec.V1, rec.V2 ) {
		}
		
		public Texture( int id, int x, int y, int width, int height, 
		               float u1, float u2, float v1, float v2 ) {
			ID = id;
			X1 = x; Y1 = y;
			Width = width; Height = height;
			U1 = u1; V1 = v1;
			U2 = u2; V2 = v2;
		}
		
		public bool IsValid { get { return ID > 0; } }
		
		public void Render( IGraphicsApi graphics ) {
			graphics.BindTexture( ID );
			graphics.Draw2DTexture( ref this, FastColour.White );
		}
		
		public void Render( IGraphicsApi graphics, FastColour colour ) {
			graphics.BindTexture( ID );
			graphics.Draw2DTexture( ref this, colour );
		}
		
		public int X2 { get { return X1 + Width; } }
		
		public int Y2 { get { return Y1 + Height; } }
		
		public override string ToString() {
			return ID + String.Format( "({0}, {1} -> {2},{3}", X1, Y1, Width, Height );
		}
	}
}