690628b318
Enhance text normalization by incorporating font ascent and descent data to more accurately position glyphs, especially for decorative initials. Update merge logic to better detect line membership using vertical overlap, ensuring drop caps and overlapping glyphs are merged correctly. Extend tests to cover these layout scenarios.
52 lines
1.9 KiB
TypeScript
52 lines
1.9 KiB
TypeScript
import { describe, expect, test } from 'vitest';
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import { mergeTextWithRegions } from '@openreader/compute-core';
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describe('mergeTextWithRegions', () => {
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test('assigns text items to containing regions by centroid and joins in reading order', () => {
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const regions = [
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{ bbox: [0, 0, 100, 50] as [number, number, number, number], label: 'text' as const },
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{ bbox: [0, 50, 100, 100] as [number, number, number, number], label: 'figure_title' as const },
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];
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const textItems = [
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{ text: 'world', x: 40, y: 20, width: 20, height: 8 },
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{ text: 'hello', x: 10, y: 20, width: 20, height: 8 },
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{ text: 'Figure', x: 10, y: 70, width: 24, height: 8 },
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{ text: '1.2', x: 40, y: 70, width: 10, height: 8 },
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];
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const merged = mergeTextWithRegions(regions, textItems);
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expect(merged).toHaveLength(2);
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expect(merged[0].text).toBe('hello world');
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expect(merged[1].text).toBe('Figure 1.2');
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});
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test('drops text whose centroid is outside every region', () => {
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const regions = [
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{ bbox: [0, 0, 50, 50] as [number, number, number, number], label: 'text' as const },
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];
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const textItems = [
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{ text: 'inside', x: 10, y: 10, width: 10, height: 8 },
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{ text: 'outside', x: 80, y: 80, width: 12, height: 8 },
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];
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const merged = mergeTextWithRegions(regions, textItems);
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expect(merged).toHaveLength(1);
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expect(merged[0].text).toBe('inside');
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});
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test('keeps decorative drop caps attached to the same line when boxes overlap vertically', () => {
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const regions = [
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{ bbox: [0, 0, 200, 120] as [number, number, number, number], label: 'text' as const },
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];
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const textItems = [
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{ text: 'I', x: 0, y: 10, width: 12, height: 60 },
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{ text: 't’s funny,', x: 12, y: 40, width: 50, height: 12 },
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];
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const merged = mergeTextWithRegions(regions, textItems);
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expect(merged).toHaveLength(1);
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expect(merged[0].text).toBe('It’s funny,');
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});
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});
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