feat: add core tools - transfor, light, effects

web/src/lib/core/effects.test.ts

@@ -0,0 +1,19 @@
+import { describe, expect, it } from 'vitest';
+import { vignette } from './effects';
+import { makeImage } from './test-helpers';
+
+describe('vignette', () => {
+	it('сила 0 — идентичное преобразование', () => {
+		const img = makeImage(3, 3, new Array(9).fill([200, 100, 50, 255]));
+		expect([...vignette(img, 0).data]).toEqual([...img.data]);
+	});
+
+	it('углы темнее центра', () => {
+		const img = makeImage(7, 7, new Array(49).fill([200, 200, 200, 255]));
+		const out = vignette(img, 80);
+		const centerR = out.data[(3 * 7 + 3) * 4];
+		const cornerR = out.data[0];
+		expect(cornerR).toBeLessThan(centerR);
+		expect(centerR).toBeGreaterThan(150);
+	});
+});