diff options
Diffstat (limited to 'NesTiler/Tile.cs')
| -rw-r--r-- | NesTiler/Tile.cs | 73 |
1 files changed, 33 insertions, 40 deletions
diff --git a/NesTiler/Tile.cs b/NesTiler/Tile.cs index faca8b9..c3db539 100644 --- a/NesTiler/Tile.cs +++ b/NesTiler/Tile.cs @@ -1,65 +1,58 @@ using System;
+using System.Linq;
+using System.Security.AccessControl;
namespace com.clusterrr.Famicom.NesTiler
{
- class Tile : IEquatable<Tile>
+ sealed record Tile : IEquatable<Tile>
{
- public readonly byte[,] pixels;
+ public readonly byte[] Pixels;
+ public readonly int Width;
+ public readonly int Height;
+ private int? hash;
+ private byte[] data = null;
- public Tile(byte[,] data)
+ public Tile(byte[] data, int width, int height)
{
- pixels = data;
+ (Pixels, Width, Height) = (data, width, height);
}
- public byte[] GetRawData()
+ public byte[] GetAsTileData()
{
- int width = pixels.GetLength(0);
- int height = pixels.GetLength(1);
- var raw = new byte[width * height / 8 * 2];
- int pixel = 0;
- byte bit = 7;
- for (int y = 0; y < height; y++)
+ if (data != null) return data;
+ data = new byte[Width * Height / 8 * 2];
+ lock (data)
{
- for (int x = 0; x < width; x++)
+ int pixel = 0;
+ byte bit = 7;
+ for (int y = 0; y < Height; y++)
{
- if ((pixels[x, y] & 1) != 0)
- raw[pixel / 64 * 2 + y] |= (byte)(1 << bit);
- if ((pixels[x, y] & 2) != 0)
- raw[pixel / 64 * 2 + y + 8] |= (byte)(1 << bit);
- pixel++;
- bit = (byte)((byte)(bit - 1) % 8);
+ for (int x = 0; x < Width; x++)
+ {
+ if ((Pixels[y * Width + x] & 1) != 0)
+ data[pixel / 64 * 2 + y] |= (byte)(1 << bit);
+ if ((Pixels[y * Width + x] & 2) != 0)
+ data[pixel / 64 * 2 + y + 8] |= (byte)(1 << bit);
+ pixel++;
+ bit = (byte)((byte)(bit - 1) % 8);
+ }
}
}
- return raw;
+ return data;
}
public bool Equals(Tile other)
{
- if ((pixels.GetLength(0) != other.pixels.GetLength(0))
- || (pixels.GetLength(1) != other.pixels.GetLength(1)))
- return false;
- int width = pixels.GetLength(0);
- int height = pixels.GetLength(1);
- for (int y = 0; y < height; y++)
- for (int x = 0; x < width; x++)
- if (pixels[x, y] != other.pixels[x, y])
- return false;
- return true;
+ var data1 = GetAsTileData();
+ var data2 = other.GetAsTileData();
+ return Enumerable.SequenceEqual(data1, data2);
}
public override int GetHashCode()
{
- int hash = 0;
- int width = pixels.GetLength(0);
- int height = pixels.GetLength(1);
- for (int y = 0; y < height; y++)
- for (int x = 0; x < width; x++)
- {
- hash ^= hash >> 28;
- hash <<= 4;
- hash ^= pixels[x, y];
- }
- return hash;
+ if (hash != null) return hash.Value;
+ hash = GetAsTileData().Sum(v => v);
+ return hash.Value;
}
}
}
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