Program — Crochet Pattern

For amigurumi, provide a sphere/ellipsoid generator that outputs rounds with precise inc/dec counts. Implement a gauge converter . User provides gauge (e.g., 16 sts = 4") and desired size (e.g., 20" wide). Formula: stitches_needed = (desired_width_inches / 4) * gauge_stitches_per_4in

| 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 | Crochet Pattern Program

"stitch_id": "sc", "name": "single crochet", "abbreviation_us": "sc", "abbreviation_uk": "dc", "height_rows": 1, "width_stitches": 1, "requires_yarn_over": true, "insertion_point": "both_loops" "name": "single crochet"

def calculate_starting_chain(desired_width_in, gauge_stitches_per_4in): return int((desired_width_in / 4) * gauge_stitches_per_4in) Also compute row count for vertical measurements: rows_needed = (desired_height_in / 4) * gauge_rows_per_4in forum sharing | Use monospaced font

| 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 |

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