fix(annotations): masks and their gimbals follow the footage, arrows get a tight gimbal - #909
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…get a tight gimbal A privacy mask on a moving tilted screen (3D Orbit, with motion blur on) fell back to an upright box around its two frames, so it ignored the perspective. It now keeps the footage's perspective, grown just enough to cover the frame before. Each preview frame now carries the footage's corners in the image. A blur's gimbal (MaskGimbal) goes through them, so it lands on the mask under a zoom and in 3D, instead of on the footage at rest. An arrow's gimbal frames the drawn arrow rather than its mostly empty box; its gestures write the square box that draws the arrow there. The preview frame is its own stacking context, so gimbals no longer paint over the export dialog.
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. Note Currently processing new changes in this PR. This may take a few minutes, please wait... ⚙️ Run configurationConfiguration used: defaults Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (2)
📝 WalkthroughWalkthroughThe compositor now includes footage corner coordinates and projective mapping metadata in published frames. The editor uses this geometry to position and manipulate footage-space masks. Arrow annotations also use stroke-aware bounds when rendering and processing gestures. ChangesFootage-aware annotation geometry
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant Compositor
participant LiveView
participant NAPIReadFrame
participant useNativeCompositorView
participant footageQuadStore
participant AnnotationLayer
Compositor->>LiveView: attach footage_quad to published frame
LiveView->>NAPIReadFrame: provide frame and footage metadata
NAPIReadFrame->>useNativeCompositorView: return frame packet
useNativeCompositorView->>footageQuadStore: publish footage corners and projective flag
footageQuadStore->>AnnotationLayer: provide footage quad through useFootageQuad
Merge Risk: 🟡 Moderate · up to Moving an arrow to the frame edge can save a project that subsequently fails to reopen. Align arrow validation with the new stored geometry before merging. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to Mask controls can use geometry from a newer frame than the one currently visible. An edit during that interval could save unintended redaction coordinates. The potential impact is limited to the edited project; no broader access or privilege expansion was identified. Retained concerns
Security review detailsSecurity Blast Radius
Security Findings and Attack Paths
Trust Boundaries and Controls
Hardening Proposals
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 76.60% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 47 functions across 20 files. (1 skipped: 1 unsupported.)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @src/components/ai-edition/AnnotationOverlay.tsx:
- Line 127: Update the document schema’s arrow-specific validation to accept the
full stored box produced by arrowBox, including negative positions, while
retaining the existing validation for other annotations. Keep bounds="parent" on
the drawn rectangle.
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Configuration used: defaults
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Run ID: e253c617-d382-4343-8238-be24a0a82f62
📒 Files selected for processing (21)
crates/compositor-view-napi/src/lib.rscrates/compositor/src/compositor_linux.rscrates/compositor/src/compositor_macos.rscrates/compositor/src/compositor_windows.rscrates/compositor/src/frame_geometry.rscrates/compositor/src/live.rscrates/compositor/src/regions.rselectron/native/compositor-view/addon.d.tssrc/components/ai-edition/AnnotationLayer.test.tsxsrc/components/ai-edition/AnnotationLayer.tsxsrc/components/ai-edition/AnnotationOverlay.tsxsrc/components/ai-edition/MaskGimbal.test.tsxsrc/components/ai-edition/MaskGimbal.tsxsrc/components/ai-edition/NewEditorShell.module.csssrc/lib/ai-edition/annotations/arrowBounds.test.tssrc/lib/ai-edition/annotations/arrowBounds.tssrc/lib/ai-edition/annotations/footageQuad.test.tssrc/lib/ai-edition/annotations/footageQuad.tssrc/native/contracts.tssrc/native/footageQuadStore.tssrc/native/hooks/useNativeCompositorView.ts
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An arrow drawn against the frame's left or top edge has a square box that starts before the frame, since the compositor draws the arrow in the middle of it. The schema refused the negative position, so the save and the next opening of the project failed.
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Summary
Follow-up to #900, from Etienne's pass on the annotations.
grow_quad), so nothing it hides leaks. Text and arrows still don't deform.FootageQuad, compositor → napi → renderer store).MaskGimbaldraws and drags through them, so it follows the mask under a zoom and in 3D, instead of the footage at rest.ARROW_EXTENTSmirrors the Rust segments and a Rust test holds the two together..previewFrameis its own stacking context (isolation: isolate). Its layers use z-indexes up to 1000+, which reached past the export dialog (z-index 100). The frame clips (overflow: hidden), so nothing inside it is meant to show outside.Related issue
Refs #900
Type of change
Release impact
Desktop impact
The footage quad is exported by all three backends. The Metal one is compiled only by the macOS CI.
Testing
cargo teston Windows (446) and on Linux via WSL + lavapipe (425), includinga_moving_tilted_mask_keeps_its_perspective,the_footage_quad_is_where_masks_landandthe_editor_frames_each_arrow_by_its_strokes.MaskGimbal,AnnotationLayer,footageQuad,arrowBounds;tscon both configs; Biome.🤖 Generated with Claude Code
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