Function expectCentroidClose

e2e/webgpu-render.spec.ts:933–943

(
      actual: BrowserTextureCentroid | undefined,
      expected: { x: number; y: number },
      label: string
    )

    expect(result.textureMetrics?.onePixelOffsetDiagnostics.improvementDb).toBe(Infinity);

    const expectCentroidClose = (
      actual: BrowserTextureCentroid | undefined,
      expected: { x: number; y: number },
      label: string
    ) => {
      expect(actual, label).toBeDefined();
      expect(actual?.totalWeight, `${label} total weight`).toBeGreaterThan(0);
      expect(actual?.litPixelCount, `${label} lit pixels`).toBeGreaterThan(0);
      expect(Math.abs((actual?.x ?? Number.NaN) - expected.x), `${label} x`).toBeLessThan(3);
      expect(Math.abs((actual?.y ?? Number.NaN) - expected.y), `${label} y`).toBeLessThan(3);
    };

    expectCentroidClose(result.centroids?.centered, { x: 48, y: 32 }, 'centered');
    expectCentroidClose(result.centroids?.offCenterPrincipal, { x: 58, y: 25 }, 'off-center principal');