gl viewport

2026-08-15 02:57:49 +04:00 · 2026-06-05 20:33:21 +03:00
parent 97dc14c36c
commit 195e6d71bd
13 changed files with 1140 additions and 0 deletions
@@ -0,0 +1,53 @@
+using System.Numerics;
+using ImGuiNET;
+
+namespace NResUI.Rendering.Viewport;
+
+public sealed class ViewportInputController
+{
+    private const float MouseRotationSpeed = 0.25f;
+    private const float MouseZoomSpeed = 0.35f;
+
+    private bool _isRotatingViewport;
+
+    public void Handle(
+        ViewportScene scene,
+        ViewportCamera camera,
+        bool viewportHovered,
+        Vector2 imageMin,
+        Vector2 imageSize)
+    {
+        var io = ImGui.GetIO();
+
+        if (viewportHovered && ImGui.IsMouseClicked(ImGuiMouseButton.Middle))
+            _isRotatingViewport = true;
+
+        if (!ImGui.IsMouseDown(ImGuiMouseButton.Middle))
+            _isRotatingViewport = false;
+
+        if (_isRotatingViewport)
+        {
+            camera.YawDegrees += io.MouseDelta.X * MouseRotationSpeed;
+            camera.PitchDegrees += io.MouseDelta.Y * MouseRotationSpeed;
+            camera.PitchDegrees = Math.Clamp(camera.PitchDegrees, -89.0f, 89.0f);
+        }
+
+        if (viewportHovered && Math.Abs(io.MouseWheel) > float.Epsilon)
+        {
+            camera.Distance -= io.MouseWheel * MouseZoomSpeed;
+            camera.Distance = Math.Clamp(camera.Distance, 1.5f, 40.0f);
+        }
+
+        if (viewportHovered && ImGui.IsMouseClicked(ImGuiMouseButton.Left))
+        {
+            var mouse = ImGui.GetMousePos();
+            var localMouse = mouse - imageMin;
+
+            scene.SelectedPieceId = ViewportSelection.PickPiece(
+                scene,
+                camera,
+                localMouse,
+                imageSize);
+        }
+    }
+}