gl viewport

NResUI/Rendering/Viewport/ViewportScene.cs

@@ -0,0 +1,53 @@
+using NResUI.Rendering.Viewport.Meshes;
+
+namespace NResUI.Rendering.Viewport;
+
+public sealed class ViewportScene
+{
+    private readonly List<ViewportPiece> _pieces = new();
+
+    public IReadOnlyList<ViewportPiece> Pieces => _pieces;
+
+    public ViewportGrid? Grid { get; set; }
+
+    public int SelectedPieceId { get; set; } = -1;
+
+    public ViewportPiece? SelectedPiece
+    {
+        get
+        {
+            if (SelectedPieceId < 0)
+                return null;
+
+            foreach (var piece in _pieces)
+            {
+                if (piece.Id == SelectedPieceId)
+                    return piece;
+            }
+
+            return null;
+        }
+    }
+
+    public void AddPiece(ViewportPiece piece)
+    {
+        _pieces.Add(piece);
+    }
+
+    public void ClearSelection()
+    {
+        SelectedPieceId = -1;
+    }
+
+    public static ViewportScene CreateDefaultCubeScene(GpuMesh cubeMesh, GpuMesh gridMesh)
+    {
+        var scene = new ViewportScene
+        {
+            Grid = new ViewportGrid(gridMesh)
+        };
+
+        scene.AddPiece(ViewportPiece.CreateUnitCube(0, "Cube", cubeMesh));
+
+        return scene;
+    }
+}