Two issues caused the camera orientation to flip when tumbling a custom
USD camera:
1. Write-back decomposed the camera matrix to XYZ-euler via
Decompose(X,Y,Z) and re-authored it as a rotateXYZ op. That round-trip
is lossy — the angles Decompose returns do not reconstruct the same
matrix as a rotateXYZ op, so the orientation read back from the prim
differed from the free-camera view shown during the drag. The view
jumped every time a drag finished and snapped back on the next drag.
Now author the full camera-to-world transform as a single matrix op,
which round-trips exactly through UsdGeomCamera::GetCamera().
2. Orbit init relied on PullFromCameraTransform's Euler decomposition for
theta/phi, which is gimbal-affected. Added
ViewportCamera::InitOrbitFromEyeAndCenter to derive theta/phi directly
from the eye->center vector (zero roll), respecting the Z-up matrix.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
When switching to a USD camera, the orbit pivot was set from
GfCamera::GetFocusDistance() which is a depth-of-field attribute
that defaults to 5 scene units regardless of scene scale.
InitCameraNavigation() now computes the scene bounding box centroid,
projects it onto the camera view ray to get a proper orbit distance,
and calls SetFocalPoint/SetDist to place the pivot correctly.
Added SetDist() setter on ViewportCamera to support this.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Add edit-target layer combo at top of Scene Hierarchy panel (always
visible when stage loaded — session, root, sublayers); routes through
LayerManager::SetEditTarget so StageEditor ET checkboxes stay in sync
- Replace custom Create Sublayer modal with native SaveFile dialog;
LayerManager::CreateNewSublayer creates the file on disk, inserts it
at the top of the sublayer stack, and activates it as edit target
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- SaveStage: explicitly call rootLayer->Save() before m_stage->Save() to
ensure root-layer metadata (subLayers field) is always written to disk
- SaveUsdFile: redirect to SaveAs when the root layer is anonymous so
Ctrl+S on an in-memory stage no longer silently does nothing
- SaveUsdFileAs: call RefreshManagers() after SaveStageAs so LayerManager
stays in sync with the newly opened file-backed stage; without this,
sublayers added after a Save As went to the old stale stage and were lost
- LayerCreateCommand::Execute: use GetSublayers() (sublayer-local indices)
instead of GetLayerStack() (full-stack indices) to record m_insertedIndex,
fixing undo of add-sublayer removing the wrong layer
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace LayerPanel with StageEditorPanel for full sublayer composition workflow:
- Edit target (ET) checkbox on root/session and each sublayer; pen icon header
- Dirty indicator (*) per layer; muted layers remain visible in list
- Drag-drop and Move Up/Down reordering with undo (LayerReorderCommand)
- Add existing sublayer via file dialog; create new sublayer modal
- Fixed LayerReorderCommand::ApplyOrder using full-stack indices on sublayer-local
list (silent remove failure → duplicate insert → USD _ValidateEdit error)
- Fixed muted sublayer visibility: walk GetSubLayerPaths() + FindOrOpenRelativeToLayer
+ m_layerRefs to keep muted layers alive and visible
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
indigo