mirror of
https://github.com/jhbruhn/respira.git
synced 2026-01-27 10:23:41 +00:00
feature: Refactor PEN parser to decoder with coherent types
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>
This commit is contained in:
parent
11b710eb17
commit
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6 changed files with 239 additions and 206 deletions
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@ -6,7 +6,7 @@ import tseslint from 'typescript-eslint'
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import { defineConfig, globalIgnores } from 'eslint/config'
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export default defineConfig([
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globalIgnores(['dist', '.vite']),
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globalIgnores(['dist', 'dist-electron', '.vite']),
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{
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files: ['**/*.{ts,tsx}'],
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extends: [
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@ -1,7 +1,7 @@
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import type { WorkerMessage, WorkerResponse } from './worker';
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import PatternConverterWorker from './worker?worker';
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import { parsePenData } from '../pen/parser';
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import type { PenData } from '../../types/machine';
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import { decodePenData } from '../pen/decoder';
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import type { DecodedPenData } from '../pen/types';
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export type PyodideState = 'not_loaded' | 'loading' | 'ready' | 'error';
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@ -24,8 +24,8 @@ export interface PesPatternData {
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chart: string | null;
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threadIndices: number[];
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}>;
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penData: Uint8Array; // Raw PEN bytes sent to machine
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penStitches: PenData; // Parsed PEN stitches (for rendering)
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penData: Uint8Array; // Raw PEN bytes sent to machine
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penStitches: DecodedPenData; // Decoded PEN stitches (for rendering)
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colorCount: number;
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stitchCount: number;
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bounds: {
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@ -180,9 +180,9 @@ class PatternConverterClient {
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// Convert penData array back to Uint8Array
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const penData = new Uint8Array(message.data.penData);
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// Parse the PEN data to get stitches for rendering
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const penStitches = parsePenData(penData);
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console.log('[PatternConverter] Parsed PEN data:', penStitches.totalStitches, 'stitches,', penStitches.colorCount, 'colors');
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// Decode the PEN data to get stitches for rendering
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const penStitches = decodePenData(penData);
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console.log('[PatternConverter] Decoded PEN data:', penStitches.stitches.length, 'stitches,', penStitches.colorBlocks.length, 'colors');
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const result: PesPatternData = {
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...message.data,
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179
src/formats/pen/decoder.ts
Normal file
179
src/formats/pen/decoder.ts
Normal file
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@ -0,0 +1,179 @@
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/**
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* PEN Format Decoder
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*
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* This module contains the logic for decoding Brother PP1 PEN format embroidery files.
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* The PEN format uses absolute coordinates shifted left by 3 bits, with flags in the low 3 bits.
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*/
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import type { DecodedPenStitch, DecodedPenData, PenColorBlock } from './types';
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// PEN format flags
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const PEN_FEED_DATA = 0x01; // Bit 0: Jump stitch (move without stitching)
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const PEN_CUT_DATA = 0x02; // Bit 1: Trim/cut thread command
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const PEN_COLOR_END = 0x03; // Last stitch before color change
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const PEN_DATA_END = 0x05; // Last stitch of entire pattern
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/**
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* Decode a single PEN stitch (4 bytes) into coordinates and flags
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*
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* @param bytes The byte array containing PEN data
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* @param offset The offset in bytes to start reading from
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* @returns Decoded stitch with coordinates and flag information
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*/
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export function decodePenStitch(
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bytes: Uint8Array | number[],
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offset: number
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): DecodedPenStitch {
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const xLow = bytes[offset];
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const xHigh = bytes[offset + 1];
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const yLow = bytes[offset + 2];
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const yHigh = bytes[offset + 3];
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const xRaw = xLow | (xHigh << 8);
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const yRaw = yLow | (yHigh << 8);
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// Extract flags from low 3 bits
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const xFlags = xRaw & 0x07;
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const yFlags = yRaw & 0x07;
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// Clear flags and shift right to get actual coordinates
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const xClean = xRaw & 0xFFF8;
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const yClean = yRaw & 0xFFF8;
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// Convert to signed 16-bit
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let xSigned = xClean;
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let ySigned = yClean;
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if (xSigned > 0x7FFF) xSigned = xSigned - 0x10000;
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if (ySigned > 0x7FFF) ySigned = ySigned - 0x10000;
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// Shift right by 3 to get actual coordinates
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const x = xSigned >> 3;
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const y = ySigned >> 3;
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const isFeed = (yFlags & PEN_FEED_DATA) !== 0;
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const isCut = (yFlags & PEN_CUT_DATA) !== 0;
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const isColorEnd = xFlags === PEN_COLOR_END;
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const isDataEnd = xFlags === PEN_DATA_END;
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return {
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x,
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y,
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xFlags,
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yFlags,
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isFeed,
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isCut,
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isColorEnd,
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isDataEnd,
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// Compatibility aliases
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isJump: isFeed,
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flags: (xFlags & 0x07) | (yFlags & 0x07),
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};
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}
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/**
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* Decode all stitches from PEN format bytes
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*
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* @param bytes PEN format byte array
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* @returns Array of decoded stitches
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*/
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export function decodeAllPenStitches(bytes: Uint8Array | number[]): DecodedPenStitch[] {
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if (bytes.length < 4 || bytes.length % 4 !== 0) {
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throw new Error(`Invalid PEN data size: ${bytes.length} bytes (must be multiple of 4)`);
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}
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const stitches: DecodedPenStitch[] = [];
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for (let i = 0; i < bytes.length; i += 4) {
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stitches.push(decodePenStitch(bytes, i));
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}
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return stitches;
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}
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/**
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* Decode PEN format data into a complete pattern structure
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*
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* This function parses PEN bytes and extracts:
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* - Individual stitches with coordinates and flags
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* - Color blocks (groups of stitches using the same thread color)
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* - Pattern bounds
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*
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* @param data PEN format byte array
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* @returns Complete decoded pattern data
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*/
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export function decodePenData(data: Uint8Array): DecodedPenData {
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const stitches = decodeAllPenStitches(data);
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const colorBlocks: PenColorBlock[] = [];
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let minX = Infinity;
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let maxX = -Infinity;
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let minY = Infinity;
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let maxY = -Infinity;
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let currentColorStart = 0;
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let currentColor = 0;
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for (let i = 0; i < stitches.length; i++) {
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const stitch = stitches[i];
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// Track bounds (exclude jump stitches)
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if (!stitch.isFeed) {
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minX = Math.min(minX, stitch.x);
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maxX = Math.max(maxX, stitch.x);
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minY = Math.min(minY, stitch.y);
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maxY = Math.max(maxY, stitch.y);
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}
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// Check for color change or data end
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if (stitch.isColorEnd) {
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colorBlocks.push({
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startStitchIndex: currentColorStart,
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endStitchIndex: i,
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colorIndex: currentColor,
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// Compatibility aliases
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startStitch: currentColorStart,
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endStitch: i,
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});
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currentColor++;
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currentColorStart = i + 1;
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} else if (stitch.isDataEnd) {
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// Final color block
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if (currentColorStart <= i) {
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colorBlocks.push({
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startStitchIndex: currentColorStart,
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endStitchIndex: i,
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colorIndex: currentColor,
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// Compatibility aliases
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startStitch: currentColorStart,
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endStitch: i,
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});
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}
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break;
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}
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}
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return {
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stitches,
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colorBlocks,
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bounds: {
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minX: minX === Infinity ? 0 : minX,
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maxX: maxX === -Infinity ? 0 : maxX,
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minY: minY === Infinity ? 0 : minY,
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maxY: maxY === -Infinity ? 0 : maxY,
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},
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};
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}
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/**
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* Get the color index for a stitch at the given index
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*
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* @param penData Decoded PEN pattern data
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* @param stitchIndex Index of the stitch
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* @returns Color index, or -1 if not found
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*/
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export function getStitchColor(penData: DecodedPenData, stitchIndex: number): number {
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for (const block of penData.colorBlocks) {
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if (stitchIndex >= block.startStitchIndex && stitchIndex <= block.endStitchIndex) {
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return block.colorIndex;
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}
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}
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return -1;
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}
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@ -5,74 +5,12 @@ import {
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generateLockStitches,
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encodeStitchesToPen,
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} from './encoder';
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import { decodeAllPenStitches } from './decoder';
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import { STITCH, MOVE, TRIM, END } from '../import/constants';
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// PEN format flag constants for testing
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const PEN_FEED_DATA = 0x01;
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const PEN_CUT_DATA = 0x02;
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const PEN_COLOR_END = 0x03;
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const PEN_DATA_END = 0x05;
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/**
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* Helper function to decode a single PEN stitch (4 bytes) into coordinates and flags
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*/
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function decodePenStitch(bytes: number[], offset: number): {
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x: number;
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y: number;
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xFlags: number;
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yFlags: number;
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isFeed: boolean;
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isCut: boolean;
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isColorEnd: boolean;
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isDataEnd: boolean;
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} {
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const xLow = bytes[offset];
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const xHigh = bytes[offset + 1];
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const yLow = bytes[offset + 2];
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const yHigh = bytes[offset + 3];
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const xRaw = xLow | (xHigh << 8);
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const yRaw = yLow | (yHigh << 8);
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// Extract flags from low 3 bits
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const xFlags = xRaw & 0x07;
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const yFlags = yRaw & 0x07;
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// Clear flags and shift right to get actual coordinates
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const xClean = xRaw & 0xFFF8;
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const yClean = yRaw & 0xFFF8;
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// Convert to signed
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let xSigned = xClean;
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let ySigned = yClean;
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if (xSigned > 0x7FFF) xSigned = xSigned - 0x10000;
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if (ySigned > 0x7FFF) ySigned = ySigned - 0x10000;
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const x = xSigned >> 3;
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const y = ySigned >> 3;
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return {
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x,
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y,
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xFlags,
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yFlags,
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isFeed: (yFlags & PEN_FEED_DATA) !== 0,
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isCut: (yFlags & PEN_CUT_DATA) !== 0,
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isColorEnd: xFlags === PEN_COLOR_END,
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isDataEnd: xFlags === PEN_DATA_END,
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};
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}
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/**
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* Helper to parse all stitches from PEN bytes
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*/
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function decodeAllPenStitches(bytes: number[]) {
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const stitches = [];
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for (let i = 0; i < bytes.length; i += 4) {
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stitches.push(decodePenStitch(bytes, i));
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}
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return stitches;
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}
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describe('encodeStitchPosition', () => {
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it('should encode position (0, 0) correctly', () => {
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@ -1,135 +0,0 @@
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import type { PenData, PenStitch, PenColorBlock } from '../../types/machine';
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// PEN format flags
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const PEN_FEED_DATA = 0x01; // Y-coordinate low byte, bit 0
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const PEN_COLOR_END = 0x03; // X-coordinate low byte, bits 0-2
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const PEN_DATA_END = 0x05; // X-coordinate low byte, bits 0-2
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export function parsePenData(data: Uint8Array): PenData {
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if (data.length < 4 || data.length % 4 !== 0) {
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throw new Error(`Invalid PEN data size: ${data.length} bytes`);
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}
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const stitches: PenStitch[] = [];
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const colorBlocks: PenColorBlock[] = [];
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const stitchCount = data.length / 4;
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let currentColorStart = 0;
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let currentColor = 0;
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let minX = Infinity, maxX = -Infinity;
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let minY = Infinity, maxY = -Infinity;
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console.log(`Parsing PEN data: ${data.length} bytes, ${stitchCount} stitches`);
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for (let i = 0; i < stitchCount; i++) {
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const offset = i * 4;
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// Extract coordinates (shifted left by 3 bits in PEN format)
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const xRaw = data[offset] | (data[offset + 1] << 8);
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const yRaw = data[offset + 2] | (data[offset + 3] << 8);
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// Extract flags from low 3 bits
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const xFlags = data[offset] & 0x07;
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const yFlags = data[offset + 2] & 0x07;
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// Decode coordinates (shift right by 3 to get actual position)
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// The coordinates are stored as signed 16-bit values, left-shifted by 3
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// Step 1: Clear the flag bits (low 3 bits) from the raw values
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const xRawClean = xRaw & 0xFFF8;
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const yRawClean = yRaw & 0xFFF8;
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// Step 2: Convert from unsigned 16-bit to signed 16-bit
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let xSigned = xRawClean;
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let ySigned = yRawClean;
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if (xSigned > 0x7FFF) xSigned = xSigned - 0x10000;
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if (ySigned > 0x7FFF) ySigned = ySigned - 0x10000;
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// Step 3: Shift right by 3 (arithmetic shift, preserves sign)
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const x = xSigned >> 3;
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const y = ySigned >> 3;
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const stitch: PenStitch = {
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x,
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y,
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flags: (xFlags & 0x07) | (yFlags & 0x07),
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isJump: (yFlags & PEN_FEED_DATA) !== 0,
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};
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stitches.push(stitch);
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// Track bounds
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if (!stitch.isJump) {
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minX = Math.min(minX, x);
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maxX = Math.max(maxX, x);
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minY = Math.min(minY, y);
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maxY = Math.max(maxY, y);
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}
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// Check for color change or data end
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if (xFlags === PEN_COLOR_END) {
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const block: PenColorBlock = {
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startStitch: currentColorStart,
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endStitch: i,
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colorIndex: currentColor,
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};
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colorBlocks.push(block);
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console.log(
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`Color ${currentColor}: stitches ${currentColorStart}-${i} (${
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i - currentColorStart + 1
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} stitches)`
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);
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currentColor++;
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currentColorStart = i + 1;
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} else if (xFlags === PEN_DATA_END) {
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if (currentColorStart < i) {
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const block: PenColorBlock = {
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startStitch: currentColorStart,
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endStitch: i,
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colorIndex: currentColor,
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};
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colorBlocks.push(block);
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console.log(
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`Color ${currentColor} (final): stitches ${currentColorStart}-${i} (${
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i - currentColorStart + 1
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} stitches)`
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);
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currentColor++;
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}
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console.log(`Data end marker at stitch ${i}`);
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break;
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}
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}
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const result: PenData = {
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stitches,
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colorBlocks,
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totalStitches: stitches.length,
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colorCount: colorBlocks.length,
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bounds: {
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minX: minX === Infinity ? 0 : minX,
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maxX: maxX === -Infinity ? 0 : maxX,
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minY: minY === Infinity ? 0 : minY,
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maxY: maxY === -Infinity ? 0 : maxY,
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},
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};
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console.log(
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`Parsed: ${result.totalStitches} stitches, ${result.colorCount} colors`
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);
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console.log(`Bounds: (${result.bounds.minX}, ${result.bounds.minY}) to (${result.bounds.maxX}, ${result.bounds.maxY})`);
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return result;
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}
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export function getStitchColor(penData: PenData, stitchIndex: number): number {
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for (const block of penData.colorBlocks) {
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if (stitchIndex >= block.startStitch && stitchIndex <= block.endStitch) {
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return block.colorIndex;
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}
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}
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return -1;
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}
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51
src/formats/pen/types.ts
Normal file
51
src/formats/pen/types.ts
Normal file
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@ -0,0 +1,51 @@
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/**
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* PEN Format Types
|
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*
|
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* Type definitions for decoded PEN format data.
|
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* These types represent the parsed structure of Brother PP1 PEN embroidery files.
|
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*/
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/**
|
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* A single decoded PEN stitch with coordinates and flags
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*/
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export interface DecodedPenStitch {
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x: number; // X coordinate (already shifted right by 3)
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y: number; // Y coordinate (already shifted right by 3)
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xFlags: number; // Flags from X coordinate low 3 bits
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yFlags: number; // Flags from Y coordinate low 3 bits
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isFeed: boolean; // Jump/move without stitching (Y-bit 0)
|
||||
isCut: boolean; // Trim/cut thread (Y-bit 1)
|
||||
isColorEnd: boolean; // Color change marker (X-bits 0-2 = 0x03)
|
||||
isDataEnd: boolean; // Pattern end marker (X-bits 0-2 = 0x05)
|
||||
|
||||
// Compatibility aliases
|
||||
isJump: boolean; // Alias for isFeed (backward compatibility)
|
||||
flags: number; // Combined flags (backward compatibility)
|
||||
}
|
||||
|
||||
/**
|
||||
* A color block representing stitches of the same thread color
|
||||
*/
|
||||
export interface PenColorBlock {
|
||||
startStitchIndex: number; // Index of first stitch in this color
|
||||
endStitchIndex: number; // Index of last stitch in this color
|
||||
colorIndex: number; // Color number (0-based)
|
||||
|
||||
// Compatibility aliases
|
||||
startStitch: number; // Alias for startStitchIndex (backward compatibility)
|
||||
endStitch: number; // Alias for endStitchIndex (backward compatibility)
|
||||
}
|
||||
|
||||
/**
|
||||
* Complete decoded PEN pattern data
|
||||
*/
|
||||
export interface DecodedPenData {
|
||||
stitches: DecodedPenStitch[];
|
||||
colorBlocks: PenColorBlock[];
|
||||
bounds: {
|
||||
minX: number;
|
||||
maxX: number;
|
||||
minY: number;
|
||||
maxY: number;
|
||||
};
|
||||
}
|
||||
Loading…
Reference in a new issue