using System;
using System.Collections.Generic;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Drawing;

namespace PckStudio.Models
{
	public class TexturePlane : Object3D
	{
		public override System.Drawing.Image Image
		{
			set
			{
				this.Bitmap = (System.Drawing.Bitmap)value;
			}
		}

		internal override MinecraftModelView Viewport
		{
			set
			{
				base.Viewport = value;
				if (this.bitmap != null && value != null)
				{
					this.UpdateBitmap();
				}
			}
		}

		internal override void Update()
		{
			if (this.Points == null || this.viewport == null)
			{
				return;
			}
			Matrix3D m = this.globalTransformation * this.localTransformation * this.originTranslation;
			for (int i = 0; i <= this.width; i++)
			{
				for (int j = 0; j <= this.height; j++)
				{
					Point3D point3D = m * new Point3D((float)i, (float)j, 0f);
					this.Points[i, j] = this.viewport.Point3DTo2D(point3D);
					double num = (double)this.viewport.GetZOrder(point3D);
					this.ZOrder[i, j] += num;
					this.ZOrder[i + 1, j] += num;
					this.ZOrder[i, j + 1] += num;
					this.ZOrder[i + 1, j + 1] = num;
				}
			}
		}

		private Bitmap Bitmap
		{
			set
			{
				if (this.viewport == null)
				{
					this.bitmap = value;
					return;
				}
				this.texelList.Clear();
				if (this.bitmap != null)
				{
					this.viewport.RemoveTexelsOf(this);
					this.Points = null;
				}
				this.bitmap = value;
				if (this.bitmap != null)
				{
					this.UpdateBitmap();
					this.Update();
				}
			}
		}

		private void UpdateBitmap()
		{
			this.width = this.bitmap.Width;
			this.height = this.bitmap.Height;
			this.visibility = new bool[this.width, this.height];
			for (int i = 0; i < this.width; i++)
			{
				for (int j = 0; j < this.height; j++)
				{
					System.Drawing.Color pixel = this.bitmap.GetPixel(i, j);
					int num = this.flipHorizontally ? (this.width - i - 1) : i;
					int num2 = this.flipVertically ? j : (this.height - j - 1);
					if (pixel.A == 0)
					{
						this.visibility[num, num2] = false;
					}
					else
					{
						this.visibility[num, num2] = true;
						Texel texel = new Texel(this, num, num2, pixel);
						this.viewport.AddTexel(texel);
						this.texelList.Add(texel);
					}
				}
			}
			this.Points = new System.Drawing.PointF[this.width + 1, this.height + 1];
			this.ZOrder = new double[this.width + 2, this.height + 2];
		}

		public TexturePlane(System.Drawing.Image bitmap, System.Drawing.Rectangle srcRect, Point3D origin, Point3D normal, Effects effects)
		{
			base.Origin = origin;
			this.normal = normal;
			if (bitmap == null)
			{
				this.Bitmap = null;
				return;
			}
			System.Drawing.Bitmap bitmap2 = new System.Drawing.Bitmap(srcRect.Width, srcRect.Height);
			using (System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(bitmap2))
			{
				graphics.DrawImage(bitmap, new System.Drawing.Rectangle(0, 0, bitmap2.Width, bitmap2.Height), srcRect, System.Drawing.GraphicsUnit.Pixel);
			}
			this.flipHorizontally = ((byte)(effects & Effects.FlipHorizontally) == 1);
			this.flipVertically = ((byte)(effects & Effects.FlipVertically) == 2);
			this.Bitmap = bitmap2;
		}

		public override float HitTest(System.Drawing.PointF location)
		{
			if (this.Points == null)
			{
				return -1000f;
			}
			System.Drawing.Drawing2D.GraphicsPath graphicsPath = new System.Drawing.Drawing2D.GraphicsPath();
			graphicsPath.AddPolygon(new System.Drawing.PointF[]
			{
				this.Points[0, 0],
				this.Points[this.Points.GetLength(0) - 1, 0],
				this.Points[this.Points.GetLength(0) - 1, this.Points.GetLength(1) - 1],
				this.Points[0, this.Points.GetLength(1) - 1]
			});
			System.Drawing.Region region = new System.Drawing.Region(graphicsPath);
			if (region.IsVisible(location))
			{
				for (int i = 0; i < this.Points.GetLength(0) - 1; i++)
				{
					for (int j = 0; j < this.Points.GetLength(1) - 1; j++)
					{
						if (this.visibility[i, j])
						{
							graphicsPath.Reset();
							graphicsPath.AddPolygon(new System.Drawing.PointF[]
							{
								this.Points[i, j],
								this.Points[i + 1, j],
								this.Points[i + 1, j + 1],
								this.Points[i, j + 1]
							});
							if (graphicsPath.IsVisible(location))
							{
								return (this.globalTransformation * this.localTransformation * this.originTranslation * new Point3D((float)i, (float)j, 0f)).Z;
							}
						}
					}
				}
			}
			return -1000f;
		}

		private System.Collections.Generic.List<Texel> texelList = new System.Collections.Generic.List<Texel>();

		internal System.Drawing.PointF[,] Points;

		internal double[,] ZOrder;

		internal bool IsVisible = true;

		private bool[,] visibility;

		private System.Drawing.Bitmap bitmap;

		private bool flipHorizontally;

		private bool flipVertically;

		private int width;

		private int height;

		private Point3D normal;
	}
}