/// <summary>
/// 光线追踪测试
/// </summary>
/// <param name="ray"></param>
/// <returns></returns>
public override RayCastResult Intersection(Ray ray, float nowbest)
{
// 包围盒测试失败
{
(bool happened, float mint) = BoundBox.Intersection(ray);
if (!happened || mint > nowbest) // 未相交 或 当前最小解已不是最优
{
return(null);
}
}
RayCastResult result = BVH.Intersection(ray, float.MaxValue);
if (result != null)
{
result.material = Material;
if (result.internalPoint)
{
result.IOR = 1.0f;
}
else
{
result.IOR = Material.Refraction.IOR;
}
}
return(result);
}