Formalize scene viewport HUD overlay

editor/src/panels/SceneViewPanel.cpp

@@ -4,11 +4,10 @@
 #include "Core/ISelectionManager.h"
 #include "SceneViewPanel.h"
 #include "Viewport/SceneViewportEditorOverlayData.h"
+#include "Viewport/SceneViewportHudOverlay.h"
 #include "Viewport/SceneViewportOverlayHandleBuilder.h"
 #include "Viewport/SceneViewportOverlayHitTester.h"
 #include "Viewport/SceneViewportMath.h"
-#include "Viewport/SceneViewportOrientationGizmo.h"
-#include "Viewport/SceneViewportOverlayRenderer.h"
 #include "Viewport/SceneViewportTransformGizmoFrameBuilder.h"
 #include "ViewportPanelContent.h"
 #include "Platform/Win32Utf8.h"
@@ -139,6 +138,17 @@ SceneViewportInteractionCandidate BuildOrientationGizmoInteractionCandidate(
     return candidate;
 }
 
+SceneViewportInteractionCandidate BuildHudOverlayInteractionCandidate(
+    const SceneViewportHudOverlayHitResult& hitResult) {
+    switch (hitResult.kind) {
+    case SceneViewportHudOverlayHitKind::OrientationAxis:
+        return BuildOrientationGizmoInteractionCandidate(hitResult.orientationAxis);
+    case SceneViewportHudOverlayHitKind::None:
+    default:
+        return {};
+    }
+}
+
 SceneViewportInteractionCandidate BuildOverlayHandleInteractionCandidate(
     const SceneViewportOverlayHandleHitResult& hitResult) {
     SceneViewportInteractionCandidate candidate = {};
@@ -549,6 +559,8 @@ void SceneViewPanel::Render() {
             activeGizmoKind = SceneViewportActiveGizmoKind::None;
         }
         const bool gizmoActive = activeGizmoKind != SceneViewportActiveGizmoKind::None;
+        const SceneViewportHudOverlayData interactionHudOverlay =
+            BuildSceneViewportHudOverlayData(overlay);
         SceneViewportInteractionCandidate hoveredInteraction = {};
         const bool canResolveViewportInteraction =
             hasInteractiveViewport &&
@@ -564,9 +576,9 @@ void SceneViewPanel::Render() {
                 hoveredInteraction);
 
             AccumulateSceneViewportInteractionCandidate(
-                BuildOrientationGizmoInteractionCandidate(
-                    HitTestSceneViewportOrientationGizmo(
-                        overlay,
+                BuildHudOverlayInteractionCandidate(
+                    HitTestSceneViewportHudOverlay(
+                        interactionHudOverlay,
                         content.itemMin,
                         content.itemMax,
                         io.MousePos)),
@@ -812,12 +824,11 @@ void SceneViewPanel::Render() {
                         m_scaleGizmo,
                         drawGizmoFrameState.scaleContext)));
 
-            DrawSceneViewportOverlay(
+            DrawSceneViewportHudOverlay(
                 ImGui::GetWindowDrawList(),
-                overlay,
+                BuildSceneViewportHudOverlayData(overlay),
                 content.itemMin,
-                content.itemMax,
-                content.availableSize);
+                content.itemMax);
         }
     }