till
577b13f680
- format.ts: exact px (cm/2.54*dpi), catalog incl. The Frame/portrait, aspect ratio - pipeline.ts: finalizeToFormat (cover/attention crop, dpi metadata), stickerContour (alpha dilation -> white border), heic->png, german filename slug - prompts.ts: task prompts (clean/cutout/format) — reproduce, don't reinterpret - process.ts: per-item chain (load -> model /v1/images -> finalize -> contour -> store) - queue.ts + worker.ts: pg-boss (concurrency, retry, counters, 402 pause, completion) - verified locally: 30x40@300dpi = exact 3543x4724 + dpi meta; sticker white border + alpha
68 lines
2.6 KiB
TypeScript
68 lines
2.6 KiB
TypeScript
// Zielformate & exakte Pixelberechnung (siehe 01 §5, 06 §3).
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// px = round(cm / 2.54 * dpi)
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export type Orientation = 'portrait' | 'landscape';
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export interface Dimensions { w: number; h: number; cm?: [number, number]; label: string; }
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// cm-Formate: [Breite, Höhe] in Hochformat-Konvention (kurze Seite × lange Seite)
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const CM: Record<string, [number, number]> = {
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'9x13': [9, 13], '10x15': [10, 15], '13x18': [13, 18], '15x20': [15, 20],
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'20x30': [20, 30], '30x40': [30, 40], '30x45': [30, 45], '40x50': [40, 50],
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'40x60': [40, 60], '50x70': [50, 70], '60x90': [60, 90],
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A4: [21, 29.7], A3: [29.7, 42], A2: [42, 59.4],
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'20x20': [20, 20], '30x30': [30, 30],
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};
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// Reine Bildschirmformate (feste Pixel, kein cm/dpi)
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const SCREEN: Record<string, [number, number]> = {
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theframe: [3840, 2160], // 16:9 quer
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hochformat: [2160, 3840], // 9:16 hoch
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};
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export const cmToPx = (cm: number, dpi: number) => Math.round((cm / 2.54) * dpi);
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export interface ResolveInput {
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format: string; // Schlüssel oben, 'sticker', 'custom' oder 'keep'
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orientation?: Orientation;
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dpi?: number;
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customCm?: [number, number]; // für 'sticker'/'custom'
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}
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/** Liefert exakte Zielpixel + Label. `keep` → null (Original behalten). */
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export function resolveDimensions(input: ResolveInput): Dimensions | null {
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const { format } = input;
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const dpi = input.dpi ?? 300;
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const orient = input.orientation ?? 'portrait';
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if (format === 'keep') return null;
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if (format in SCREEN) {
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const [w, h] = SCREEN[format];
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return { w, h, label: format === 'theframe' ? 'The Frame' : 'Hochformat' };
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}
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let cm: [number, number] | undefined;
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if (format in CM) cm = CM[format];
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else if (format === 'sticker' || format === 'custom') cm = input.customCm ?? [5, 5];
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if (!cm) throw new Error(`Unbekanntes Format: ${format}`);
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// Hochformat-Konvention → gewünschte Orientierung anwenden
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let [wCm, hCm] = cm;
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if (orient === 'landscape') [wCm, hCm] = [hCm, wCm];
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return { w: cmToPx(wCm, dpi), h: cmToPx(hCm, dpi), cm: [wCm, hCm],
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label: `${cm[0]}×${cm[1]} cm` };
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}
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/** Vereinfachtes Seitenverhältnis als "b:h" für die Bild-API. */
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export function aspectRatio(w: number, h: number): string {
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const g = gcd(w, h);
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return `${Math.round(w / g)}:${Math.round(h / g)}`;
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}
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function gcd(a: number, b: number): number { return b === 0 ? a : gcd(b, a % b); }
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/** Reicht die native Auflösung für echte 300 dpi? (Hinweis in der UI.) */
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export function upscaleWarning(srcW: number, srcH: number, target: Dimensions): boolean {
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return srcW < target.w * 0.95 || srcH < target.h * 0.95;
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}
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