${message}
-Roll Calculator is offline or the resource is not cached.
- `, - { - status: 404, - statusText: 'Not Found', - headers: new Headers({ - 'Content-Type': 'text/html' - }) - } + `${message} not found or you are offline.
`, + { status: 404, statusText: 'Not Found', headers: { 'Content-Type': 'text/html' } } ); } function createPlaceholderImage() { - const svg = ``; - - return new Response(svg, { - headers: { - 'Content-Type': 'image/svg+xml', - 'Cache-Control': 'public, max-age=86400' - } - }); + const svg = ``; + return new Response(svg, { headers: { 'Content-Type': 'image/svg+xml', 'Cache-Control': 'public, max-age=86400' } }); } -// =================================================================== -// LOG SERVICE WORKER STATUS -// =================================================================== -console.log('[ServiceWorker] Naue Roll Calculator Service Worker loaded'); +console.log('[ServiceWorker] RollCalc Service Worker loaded'); diff --git a/static/stddev_calculator.js b/static/stddev_calculator.js new file mode 100644 index 0000000..8b9bce6 --- /dev/null +++ b/static/stddev_calculator.js @@ -0,0 +1,120 @@ +/** + * ROLLCALC V14 - STANDARD DEVIATION CALCULATOR + * ============================================= + * Calculates diameter & weight ranges (±2σ = 95% confidence) + * For use with article-data.json containing thickness_stddev & area_weight_stddev + */ + +class StdDevCalculator { + /** + * Calculate weight ranges from area weight and stddev + * @param {number} areaWeight - Area weight in g/m² + * @param {number} areaWeightStddev - Standard deviation in g/m² + * @param {number} length - Product length in meters + * @param {number} width - Roll width in meters + * @returns {Object} {min, nom, max, aw_min, aw_nom, aw_max} + */ + static calculateWeightRanges(areaWeight, areaWeightStddev, length, width) { + if (!areaWeight || !length || !width) return null; + + const sigma = areaWeightStddev || 0; + const aw_min = Math.max(0, areaWeight - 2 * sigma); // Worst case (lightest) + const aw_nom = areaWeight; // Nominal + const aw_max = areaWeight + 2 * sigma; // Best case (heaviest) + + return { + min: (aw_min * length * width / 1000), // kg + nom: (aw_nom * length * width / 1000), // kg + max: (aw_max * length * width / 1000), // kg + aw_min: aw_min, + aw_nom: aw_nom, + aw_max: aw_max + }; + } + + /** + * Calculate diameter ranges from thickness and stddev + * NOTE: Thinner product → larger roll, thicker product → smaller roll + * @param {number} coreDiameter - Core diameter in mm + * @param {number} thickness - Product thickness in mm + * @param {number} thicknessStddev - Standard deviation in mm + * @param {number} productLength - Product length in meters + * @returns {Object} {min, nom, max, t_min, t_nom, t_max} + */ + static calculateDiameterRanges(coreDiameter, thickness, thicknessStddev, productLength) { + if (!coreDiameter || !thickness || !productLength) return null; + + const d = coreDiameter; + const L = productLength * 1000; // Convert to mm + const sigma = thicknessStddev || 0; + + // ±2σ = 95% confidence interval + const t_min = Math.max(0, thickness - 2 * sigma); // Thinnest product + const t_nom = thickness; // Nominal + const t_max = thickness + 2 * sigma; // Thickest product + + // D = √(d² + 4Lt/π) + // Thinner product → larger D + // Thicker product → smaller D + const d_nom = Math.sqrt(d*d + (4*L*t_nom)/Math.PI); + const d_thin = Math.sqrt(d*d + (4*L*t_min)/Math.PI); // LARGEST roll + const d_thick = Math.sqrt(d*d + (4*L*t_max)/Math.PI); // SMALLEST roll + + return { + min: d_thick, // SMALLEST (thickest product) + nom: d_nom, // NOMINAL + max: d_thin, // LARGEST (thinnest product) + t_min: t_min, + t_nom: t_nom, + t_max: t_max + }; + } + + /** + * Format diameter result with ±2σ ranges and tolerance + */ + static formatDiameterResult(diameterRanges, tolerance = 0) { + if (!diameterRanges) return ''; + + const d_low = Math.min(diameterRanges.min, diameterRanges.max); + const d_high = Math.max(diameterRanges.min, diameterRanges.max); + + let text = `${diameterRanges.nom.toFixed(1)} mm (±2σ: ${d_low.toFixed(1)}–${d_high.toFixed(1)} mm)`; + + if (tolerance && tolerance > 0) { + const d_tol_min = diameterRanges.nom - tolerance; + const d_tol_max = diameterRanges.nom + tolerance; + text += ` | Tolerance: ${d_tol_min.toFixed(1)}–${d_tol_max.toFixed(1)} mm`; + } + + return text; + } + + /** + * Format weight result + */ + static formatWeightResult(weightRanges) { + if (!weightRanges) return ''; + return `${weightRanges.nom.toFixed(1)} kg (${weightRanges.min.toFixed(1)}–${weightRanges.max.toFixed(1)} kg)`; + } + + /** + * Get worst-case weight for safety checks (Forklift, etc.) + */ + static getWorstCaseWeight(weightRanges) { + if (!weightRanges) return 0; + return Math.max(weightRanges.nom, weightRanges.max); + } + + /** + * Get nominal weight for capacity planning + */ + static getNominalWeight(weightRanges) { + if (!weightRanges) return 0; + return weightRanges.nom; + } +} + +// Export globally +window.StdDevCalculator = StdDevCalculator; +console.log('[StdDevCalculator] Module loaded'); diff --git a/templates/roll_calculator.html b/templates/roll_calculator.html index 3fbf28f..70b93ba 100644 --- a/templates/roll_calculator.html +++ b/templates/roll_calculator.html @@ -1,437 +1,90 @@ - - - - - +Roll Diameter • Product Length • Roll Weight • Load Optimizer