微软SkiaSharp中的惊天Bug

public static SKPoint Reflect (SKPoint point, SKPoint normal)
{
	var dot = point.x * point.x + point.y * point.y;
	return new SKPoint (
		point.x - 2.0f * dot * normal.x,
		point.y - 2.0f * dot * normal.y);
}

public SKPoint Reflect (SKPoint normal)
{
	SKPoint normalizedNormal = Normalize (normal); // 法向量归一化
	var dot = x * normalizedNormal.x + y * normalizedNormal.y; // 计算点积
	return new SKPoint (
		x - 2.0f * dot * normalizedNormal.x,
		y - 2.0f * dot * normalizedNormal.y);
}