public ISkyBoxAble SkyBox; // = DefaultSkyBox.Default; // todo: 删除默认值
public RayCastResult Intersection(Ray ray)
{
RayCastResult result = null;
foreach (RenderObject o in r_Objects)
{
RayCastResult re = o.Intersection(ray, float.MaxValue);
result = RayCastResult.BetterOne(result, re);
}
return(result);
}
public RayCastResult Intersection(Ray ray, float nowbest)
{
(bool cast, float mint) = BoundBox.Intersection(ray);
if (!cast || mint > nowbest) // 未相交 或 当前最小解已不是最优
{
return(null);
}
RayCastResult result = null; // RayCastResult.BetterOne(lres, rres);
if (Childs != null)
{
foreach (IRayCastAble obj in Childs)
{
RayCastResult restmp = obj.Intersection(ray, nowbest);
result = RayCastResult.BetterOne(result, restmp);
if (result != null)
{
nowbest = Math.Min(nowbest, result.distance);
}
}
}
return(result);
}