/// <summary>
/// 利用反向算法得到含有两次不相邻绕射的路径中的各个点详细位置信息
/// </summary>
/// <param name="indexOfPath">所要计算的路径的下标</param>
/// <param name="indexOfEdge1OfThisPath">第一次绕射节点所在下标位置信息</param>
/// <param name="indexOfEdge2OfThisPath">第二次绕射节点所在下标位置信息</param>
/// <returns>按路径经过顺序存储的各个点的坐标</returns>
private List <Point> GetPointsOfContainTwoNoAdjacentDiffractPath(int indexOfEdge1OfThisPath, int indexOfEdge2OfThisPath)
{
List <Point> pointList = new List <Point>();
for (int i = 0; i < this.node.Count - 2; i++)
{
pointList.Add(new Point());
}
Stack <Face> reflectTrianglesBeforeDiffract = new Stack <Face>(), reflectTrianglesForMirrorBeforeDiffract = new Stack <Face>(),
reflectTrianglesAfterDiffract = new Stack <Face>(), reflectTrianglesForMirrorAfterDiffract = new Stack <Face>(),
reflectTrianglesBetweenDiffract = new Stack <Face>();
Stack <Point> mirrorPointsBeforeDiffract = new Stack <Point>(), mirrorPointsAfterDiffract = new Stack <Point>(),
mirrorPointsBetweenDiffract = new Stack <Point>();
Stack <AdjacentEdge> mirrorDiffractEdge = new Stack <AdjacentEdge>();
//预处理绕射棱前后的三角面和点
DealTrianglesAndPointsBeforeAndAfterDiffractEdge(indexOfEdge1OfThisPath, indexOfEdge2OfThisPath,
reflectTrianglesBeforeDiffract, reflectTrianglesAfterDiffract, mirrorPointsBeforeDiffract, mirrorPointsAfterDiffract);
//求绕射两棱前后的镜像点
PushTrianglesAndMirrorPoints(reflectTrianglesBeforeDiffract, reflectTrianglesForMirrorBeforeDiffract, mirrorPointsBeforeDiffract);
PushTrianglesAndMirrorPoints(reflectTrianglesAfterDiffract, reflectTrianglesForMirrorAfterDiffract, mirrorPointsAfterDiffract);
mirrorPointsBetweenDiffract.Push(mirrorPointsBeforeDiffract.Peek());
mirrorDiffractEdge.Push(this.node[indexOfEdge1OfThisPath].DiffractionEdge);
AdjacentEdge updatedDiffractEdge2 = this.node[indexOfEdge2OfThisPath].DiffractionEdge;
AdjacentEdge tempDiffractEdge2 = GetNewDiffractEdge(this.node[indexOfEdge2OfThisPath - 1].ReflectionFace,
this.node[indexOfEdge2OfThisPath].DiffractionEdge, mirrorPointsAfterDiffract.Peek());//利用绕射棱前一三角面更新绕射棱信息
updatedDiffractEdge2.StartPoint = tempDiffractEdge2.StartPoint;
updatedDiffractEdge2.EndPoint = tempDiffractEdge2.EndPoint;
//作点和第一绕射棱关于两绕射棱之间的面的镜像
for (int i = indexOfEdge1OfThisPath + 1; i < indexOfEdge2OfThisPath; i++)
{
reflectTrianglesBetweenDiffract.Push(this.node[i].ReflectionFace);
mirrorPointsBetweenDiffract.Push(mirrorPointsBetweenDiffract.Peek().GetMirrorPoint(reflectTrianglesBetweenDiffract.Peek()));
mirrorDiffractEdge.Push(new AdjacentEdge(mirrorDiffractEdge.Peek().StartPoint.GetMirrorPoint(reflectTrianglesBetweenDiffract.Peek()),
mirrorDiffractEdge.Peek().EndPoint.GetMirrorPoint(reflectTrianglesBetweenDiffract.Peek())));
}
List <Point> diffractPoints = GetTwoDiffractionPoints(mirrorDiffractEdge.Pop(), updatedDiffractEdge2,
mirrorPointsBetweenDiffract.Pop(), mirrorPointsAfterDiffract.Peek());
if (diffractPoints.Count() == 0)
{
return(new List <Point>());
}
pointList[indexOfEdge2OfThisPath - 1] = diffractPoints[1]; //第二绕射棱上绕射点坐标
pointList[indexOfEdge2OfThisPath - 2] = GetReflectPoint(diffractPoints[0], diffractPoints[1], reflectTrianglesBetweenDiffract.Pop());
if (pointList[indexOfEdge2OfThisPath - 2] == null) //判断绕射棱前一三角面的反射点是否存在
{
return(new List <Point>());
}
if (reflectTrianglesBetweenDiffract.Count != 0)//两绕射棱间是否有未处理三角面
{
pointList[indexOfEdge2OfThisPath - 3] = GetReflectPoint(mirrorDiffractEdge.Pop().GetDiffractionPoint(
mirrorPointsBetweenDiffract.Pop(), pointList[indexOfEdge2OfThisPath - 2]),
pointList[indexOfEdge2OfThisPath - 2], reflectTrianglesBetweenDiffract.Pop());
if (pointList[indexOfEdge2OfThisPath - 3] == null)
{
return(new List <Point>());
}
}
pointList[indexOfEdge1OfThisPath - 1] = this.node[indexOfEdge1OfThisPath].
DiffractionEdge.GetDiffractionPoint(mirrorPointsBeforeDiffract.Peek(), pointList[indexOfEdge1OfThisPath]);
if (reflectTrianglesBeforeDiffract.Count != 0)//第一条棱前是否有反射点
{
pointList[indexOfEdge1OfThisPath - 2] = GetReflectPoint(
mirrorPointsBeforeDiffract.Pop(), pointList[indexOfEdge1OfThisPath - 1], reflectTrianglesBeforeDiffract.Pop());
if (pointList[indexOfEdge1OfThisPath - 2] == null)
{
return(new List <Point>());
}
}
if (reflectTrianglesAfterDiffract.Count != 0)//第二条棱后是否有反射点
{
pointList[indexOfEdge2OfThisPath] = GetReflectPoint(pointList[indexOfEdge2OfThisPath - 1], mirrorPointsAfterDiffract.Pop(),
reflectTrianglesAfterDiffract.Pop());
if (pointList[indexOfEdge2OfThisPath] == null)
{
return(new List <Point>());
}
}
return(pointList);
}
