The COLOR_END and CUT commands must be on the same stitch, not separate stitches.
This was causing the machine to execute an extra stitch with the new color before
the jump to the new position.
Changes:
- Combine COLOR_END (X flag) and CUT (Y flag) into single stitch at old position
- Machine now correctly pauses after cut, before jumping to new color section
- Update all color change tests to expect combined COLOR_END+CUT stitch
The correct sequence is now:
1. Finishing lock stitches (old color)
2. COLOR_END+CUT stitch (old color) ← Machine pauses here
3. Jump to new position (new color)
4. Starting lock stitches (new color)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
The encoder now adds 8 lock stitches at the very beginning of every pattern,
matching the behavior of the original C# PesxToPen.cs code (Nuihajime_TomeDataPlus
is called when counter <= 2).
Key changes:
- Find first non-MOVE stitch for lock stitch placement
- Add 8 starting lock stitches before main encoding loop
- Calculate forward-looking direction for optimal knot hiding
- Update all 30 tests to account for starting lock stitches
Also added tests to verify:
- DATA_END flag is automatically added to last stitch
- Starting lock stitches are correctly placed at pattern start
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Added tests to verify the encoder correctly handles pattern termination:
- Test that DATA_END flag is added to last stitch even without END flag
- Test that DATA_END flag is added when input has explicit END flag
This ensures patterns are always properly terminated in PEN format,
regardless of whether the input stitches have an END marker.
All 29 tests passing.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Renamed and restructured PEN parsing to match encoder pattern:
Changes:
- Renamed pen/parser.ts → pen/decoder.ts (consistent with encoder.ts)
- Created pen/types.ts for PEN-specific type definitions
- Moved types out of machine.ts (they're format-specific, not machine-specific)
- Unified decoder with encoder test helpers (encoder.test.ts now uses decoder)
New structure:
- decodePenStitch() - decode single 4-byte stitch
- decodeAllPenStitches() - decode all stitches from bytes
- decodePenData() - full decode with color blocks and bounds
- getStitchColor() - helper to get color for a stitch index
Type definitions:
- DecodedPenStitch - individual stitch with coordinates and flags
- PenColorBlock - color block (stitch range for one thread)
- DecodedPenData - complete decoded pattern data
Backward compatibility:
- Added compatibility aliases (isJump, flags, startStitch, endStitch)
- Maintains API compatibility with existing UI code
Also added dist-electron to eslint ignore list.
All tests passing (27/27), build successful, lint clean.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Moved embroidery format-related code from utils to new formats folder:
Structure:
- src/formats/pen/ - PEN format encoding and parsing
- encoder.ts (was utils/penEncoder.ts)
- encoder.test.ts (was utils/penEncoder.test.ts)
- parser.ts (was utils/penParser.ts)
- PEN constants moved inline to encoder.ts
- src/formats/import/ - Pattern import/conversion (currently PES)
- worker.ts (was workers/patternConverter.worker.ts)
- client.ts (was utils/patternConverterClient.ts)
- pesImporter.ts (was utils/pystitchConverter.ts)
- pyodideLoader.ts (was utils/pyodideLoader.ts)
- constants.ts (PyStitch/pyembroidery constants)
Benefits:
- Better separation of concerns
- PEN encoder is co-located with PEN parser
- Import logic is in one place and extensible for other formats
- Removed utils/embroideryConstants.ts - split into appropriate locations
- Updated all 18 import references across the codebase
All tests passing, build successful.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
