Maya-style Graph Editor panel (View > Curve Editor) that fits Catmull-Rom
Bezier curves through USD time samples, allows interactive editing with
tangent handles, and bakes the result back to dense linear samples on Apply.
Key behaviours:
- Left panel lists all animated attributes of the selected prim, decomposed
into per-component channels (translate [X/Y/Z], etc.) with colour swatches
and visibility toggles
- ImDrawList canvas: smooth Bezier polylines, always-visible tangent handle
lines/circles, diamond keyframe markers
- Pan (MMB/Alt+drag), zoom (scroll / Shift+scroll), Frame All (F)
- LMB drag moves keyframes; tangent handle drag reshapes curve with mirrored
or broken handles; box-select for multi-selection
- Double-click canvas adds a keyframe; Delete removes selected keyframes
- RMB context menu: Delete, Flatten, Break/Unify Tangents, Auto Tangents
- Simplify toggle (Ramer-Douglas-Peucker) reduces baked sample count
- Time cursor draggable to scrub the timeline
- UsdNotice::ObjectsChanged listener re-fits clean channels whenever the
stage changes externally (Property Panel edits, Auto-Key, undo/redo),
while preserving channels with unsaved Bezier edits
- Bake is a single undoable AttributeSetCommand (Ctrl+Z restores original
sparse samples); Revert discards in-editor edits without touching USD
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- TimelinePanel: Playblast button opens modal with output dir (native
folder picker via IFileOpenDialog), custom resolution (HD/FHD/4K
presets), frame range, and movie export toggle
- UsdSceneRenderer: CaptureFrame() reads pixels from resolved MSAA FBO;
Render() stores last dimensions for off-screen re-render at capture res
- MovieEncoder: streams RGBA frames directly into MP4 using libavcodec/
libswscale (H.264, tries libx264 → nvenc → qsv → amf → openh264)
- Application: CapturePlayblastFrame() re-renders at capture resolution
each frame; opens/writes/closes MovieEncoder inline with the render loop
- FileDialog: BrowseFolder() using Vista-style IFileOpenDialog (COM)
- CMake: FindFFmpeg.cmake locates prebuilt BtbN GPL shared package in
third_party/ffmpeg; links and copies DLLs for main and test targets
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Replace all text buttons with SVG icon buttons (skip-back, step-back,
play-back, play, pause, step-forward, skip-end)
- Add rewind: separate play-backward button that flips direction
- Add loop mode button with submenu (Loop / Bounce / Off)
- Loop wraps at boundaries; Bounce reflects direction (ping-pong)
- Start/end frames moved to flank the scrub slider as plain numbers
- New icons: play-back.svg, loop.svg (FA repeat), bounce.svg (FA exchange-alt)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
indigo