wip new display module

DisplayCommands/ByteGrid.cs

@@ -0,0 +1,25 @@
+using System.Diagnostics;
+
+namespace DisplayCommands;
+
+public class ByteGrid(ushort width, ushort height)
+{
+    public ushort Height { get; } = height;
+    
+    public ushort Width { get; } = width;
+    
+    internal Memory<byte> Data { get; } = new byte[width * height].AsMemory();
+
+    public byte this[ushort x, ushort y]
+    {
+        get => Data.Span[ GetIndex(x, y)];
+        set => Data.Span[GetIndex(x, y)] = value;
+    }
+
+    private int GetIndex(ushort x, ushort y)
+    {
+        Debug.Assert(x < Width);
+        Debug.Assert(y < Height);
+        return x + y * Width;
+    }
+}