Commits

Project activity for November 7, 2026:

com.erinsparling.happitec.canvas-stack

40 commits

• Implemented Vector-Based Cutting and Tearing: Transitioned from a simple strip model to an AreaOutline system using the package-paper-destruction library. This allows the Cut tool to physically split tape and “tear” Thing objects into multiple PaperPiece entities based on vector strokes, supporting complex geometries like loops and disjoint components.
• Enhanced Document Schema and Robustness: Upgraded the Collage file format to a flat record list (v3) that explicitly tracks record kind (thing, group, tape). Introduced a “fallback” mechanism to preserve unknown record types and malformed data, ensuring that files remain round-trippable even when containing data from different provider versions.
• Advanced Instrumentation and Automated Testing: Developed a comprehensive “Rung” testing framework (Rungs 4 and 5) featuring a replay-oracle and RungHost. This system validates precise spatial outcomes—such as vertex-mean centroids and ring counts—via recording replays and “inert twins” (regression tests designed to fail if specific logic is removed).
• Refined Interaction and Rendering Logic: Optimized the TapeLayer to use cached CGPath fills instead of TapeStrip, and updated the CollageRootView to handle tool-specific strokes. Improved the user experience by decoupling GroupThing from CanvasPaper for shared gesture settings and refining the “fringe” rendering for torn edges.
• Improved Package and Asset Management: Migrated package read/write operations into a dedicated CollagePackage library to ensure that external children and assets survive the document rebuild process during a cut operation.

T2–src

40 commits

• Implemented Vector-Based Cutting and Tearing: Integrated the package-paper-destruction library to transition from simple strips to an AreaOutline model. This enables the Cut tool to perform complex geometric splits (using AreaCutter) on both “Things” (tearing them into paper pieces) and tape, supporting features like loop-closing for disc cutouts and kerf-based splitting.
• Architectural Shift to Flat Document Schema: Refactored the Collage data model to use a flat list of records with explicit kind identifiers (thing, group, tape). This architecture introduces a robust unknown record system, allowing the application to load, preserve, and round-trip data from newer or different providers without crashing or losing information.
• Enhanced Tape and Group Logic: Redesigned tape as an outline-based fill rather than a center-line stroke. Updated group membership to be determined by connected components of intersecting outlines, and improved the cutCrossed logic to correctly identify and report group members that overlap with a cut stroke, even if those members were previously freed.
• Robust Package and Fallback Management: Moved package read/write operations into a dedicated CollagePackage library to ensure that external children and files survive the document rebuild process during a cut. Added a fallback mechanism that renders a grey silhouette snapshot for unknown record types, ensuring visual continuity when the primary provider is missing.
• Expanded Testing and Instrumentation Framework: Developed a sophisticated replay-oracle and host instrumentation suite. This includes “inert twins” (regression tests that must fail), seed-based scene generation for recording replays, and precise readiness markers that synchronize test execution with the app’s foreground state and camera orientation.

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