Crochet Pattern Program Direct

Store user-generated patterns separately from system library. This is the heart of the program. Three main approaches: A. Template-based generation Use string templates with placeholders. Example template:

| Component | Description | Example | |-----------|-------------|---------| | | Name, designer, difficulty, yarn, hook, gauge | Gauge: 16 sc x 20 rows = 4" | | Sizes | Small, medium, large with stitch counts | S (M, L): 60 (72, 84) sts | | Abbreviations key | US or UK terms | sc = single crochet | | Special stitches | Bobble, cluster, puff | Bobble: (yo, insert, pull up loop) 3x, yo pull through all | | Instructions | Rows or rounds with repeats | Row 3: [sc 2, inc] 6 times (24) | | Finishing | Seaming, blocking, edging | Fasten off, weave ends | Crochet Pattern Program

| Format | Use case | Implementation notes | |--------|----------|----------------------| | | Quick printing, forum sharing | Use monospaced font, line breaks every 10-20 sts | | HTML/CSS | Web display, mobile reading | Responsive design, collapsible sections | | PDF | Professional distribution | Use libraries like ReportLab (Python) or jsPDF (JS) | | CSV | Import into spreadsheet trackers | Rows as records, columns: Row#, Instruction, Stitch count | | Chart symbols | Visual crochet charts | Map stitches to symbols (X for sc, T for hdc) using SVG or Unicode | Store user-generated patterns separately from system library

PATTERN: Simple Scarf Yarn: Worsted weight, 200 yds Hook: 5.0 mm (H-8) Gauge: 16 sc x 20 rows = 4" Abbreviations: ch = chain sc = single crochet Suggested layers:

| Shape | Construction | Math required | |-------|--------------|----------------| | Rectangle | Rows back and forth | length = rows × row_gauge_height | | Tube (in the round) | Continuous spiral or joined rounds | circumference = sts × stitch_width | | Circle | Rounds with regular increases | increase_rounds: sts += increment | | Triangle | Decrease at edges or center | slope = rate of decrease per row | | Sphere | Increase to max circumference then decrease | symmetric inc/dec rounds |

"pattern_id": "bean_001", "name": "Simple Beanie", "difficulty": "beginner", "yarn_weight": "worsted", "hook_mm": 5.0, "gauge": "stitch": "sc", "stitches_per_4in": 16, "rows_per_4in": 20 , "sizes": "baby": "head_circumference_in": 16, "starting_ch": 40 , "adult": "head_circumference_in": 22, "starting_ch": 56 , "instructions": [ "step": 1, "text": "Ch starting_ch, join in round", "repeat": null , "step": 2, "text": "Round 1: sc in each ch around", "repeat": null , "step": 3, "text": "Round 2: [sc 2, inc] around", "repeat": "until diameter = 6\"" ]

Your program must handle each of these sections dynamically. A modular design is best. Suggested layers: