# Pastebin VCY9MZt2
		for (let corner in radii) {
			let coverage = Math.min(
				2 * radii[corner][0] / testCase.width,
				2 * radii[corner][1] / testCase.height,
			) || 0;
			r[corner] = radii[corner].map(value => {
				if (value >= testCase.spread || coverage >= 1) {
					return value + testCase.spread;
				}
				let r = 1 - value / testCase.spread;
				return value + testCase.spread * (1 - r**3 * (1 - coverage ** 3));
			});
		}