/// <summary>
///得到ReflectionPoint节点,并加入child节点的子节点List中
/// </summary>
private void SetReflectionChildNode(Node fatherNode, Node reNode, Terrain ter, City cityBuilding, ReceiveBall rxBall, double rayBeamAngle, List <FrequencyBand> txFrequencyBand)
{
reNode.LayNum = fatherNode.LayNum + 1;
reNode.DiffractionNum = fatherNode.DiffractionNum;
reNode.IsReceiver = false;
reNode.UAN = rxBall.UAN;
reNode.RayTracingDistance = fatherNode.RayTracingDistance;
reNode.RayTracingDistance += reNode.DistanceToFrontNode;
reNode.RayIn = new RayInfo(fatherNode.Position, reNode.Position);
//当新节点的层数加绕射次数不小于4或者绕射次数大于2，说明该路径已经过三次反射（或两次反射一次绕射）或者两次绕射，舍弃并追踪下一条射线
//将该节点设为end
if ((reNode.DiffractionNum >= 2) || ((reNode.LayNum + reNode.DiffractionNum) >= 4))
{
reNode.IsEnd = true;
// reNode.NodeStyle = NodeStyle.FinalNode;
fatherNode.ChildNodes.Add(reNode);
}
//否则，递归调用该函数继续追踪射线
else
{
reNode.IsEnd = false;
fatherNode.ChildNodes.Add(reNode);
RayInfo ReflectionRay = reNode.RayIn.GetReflectionRay(reNode.ReflectionFace, reNode.Position);
PunctiformPath newPath = new PunctiformPath(ReflectionRay, ter);
newPath.SetPunctiformRayPathNodes(reNode, ter, rxBall, cityBuilding, rayBeamAngle, txFrequencyBand);
}
}
/// <summary>
///求从辐射源发出的一条射线的所有路径
/// </summary>
private List <Path> GetSingleRayPaths(Node tx, Terrain ter, ReceiveBall rxBall, City cityBuilding, RayInfo inRay, double rayBeamAngle, List <FrequencyBand> txFrequencyBand)
{
// Point test = new AdjacentEdge(new Point(-1111.08, -3527.01, 5000), new Point(-1111.08, 5563.65, 5000), new SpectVector(new Point(-1111.08, -3527.01, 5000), new Point(-1111.08, 5563.65, 5000))).GetDiffractionPoint(tx.Position,rxBall.Receiver);
// inRay.RayVector = new SpectVector(tx.Position,test);
PunctiformPath pathTracing = new PunctiformPath(inRay, ter);
pathTracing.SetPunctiformRayPathNodes(tx, ter, rxBall, cityBuilding, rayBeamAngle, txFrequencyBand);
List <Path> temp = new List <Path>();
if (tx.ChildNodes.Count != 0)
{
temp = this.GetLegalPaths(tx);
tx.ChildNodes.Clear();
}
return(temp);
}
/// <summary>
///得到DiffractionPoint节点,并加入child节点的子节点List中
/// </summary>
private void GetDiffractionNode(Node fatherNode, Node cylinderCrossNode, Terrain ter, City cityBuilding, ReceiveBall rxBall, double rayBeamAngle, List <FrequencyBand> txFrequencyBand)
{
Point diffractionPoint = new RayInfo(cylinderCrossNode.DiffractionEdge.StartPoint, cylinderCrossNode.DiffractionEdge.LineVector).GetFootPointWithSkewLine(this.inRay);
if (!cylinderCrossNode.DiffractionEdge.JudgeIfPointInLineRange(diffractionPoint))//若绕射点不在棱内
{
return;
}
else
{
List <Point> diffPostions = this.GetDiffractionNodePoistions(diffractionPoint, cylinderCrossNode.DiffractionEdge);
for (int i = 0; i < diffPostions.Count; i++)
{
Node diffractionNode = new Node();
diffractionNode.Position = diffPostions[i];
diffractionNode.DiffractionEdge = cylinderCrossNode.DiffractionEdge;
diffractionNode.DisranceToEdge = diffractionPoint.GetDistanceToLine(cylinderCrossNode.DiffractionEdge.StartPoint, cylinderCrossNode.DiffractionEdge.LineVector);
diffractionNode.NodeStyle = NodeStyle.DiffractionNode;
diffractionNode.LayNum = fatherNode.LayNum + 1;
diffractionNode.DiffractionNum = fatherNode.DiffractionNum + 1;
diffractionNode.IsReceiver = false;
diffractionNode.UAN = rxBall.UAN;
diffractionNode.DistanceToFrontNode = diffractionNode.Position.GetDistance(fatherNode.Position);
diffractionNode.RayTracingDistance = fatherNode.RayTracingDistance;
diffractionNode.RayTracingDistance += diffractionNode.DistanceToFrontNode;
diffractionNode.RayIn = new RayInfo(fatherNode.Position, diffractionNode.Position);
//当新节点的层数加绕射次数不小于4或者绕射次数大于2，说明该路径已经过三次反射（或两次反射一次绕射）或者两次绕射，舍弃并追踪下一条射线
//将该节点设为end
if ((diffractionNode.DiffractionNum >= 2) || ((diffractionNode.LayNum + diffractionNode.DiffractionNum) >= 4))
{
diffractionNode.IsEnd = true;
}
//否则，递归调用该函数继续追踪射线
else
{
diffractionNode.IsEnd = false;
fatherNode.ChildNodes.Add(diffractionNode);
List <RayInfo> diffractionRays = Rays.GetDiffractionRays(fatherNode.Position, diffractionNode.Position, diffractionNode.DiffractionEdge, 36);//采用新的方法获得绕射射线
for (int j = 0; j < diffractionRays.Count; j++)
{
PunctiformPath newPath = new PunctiformPath(diffractionRays[j], ter);
newPath.SetPunctiformRayPathNodes(diffractionNode, ter, rxBall, cityBuilding, rayBeamAngle, txFrequencyBand);
}
}
}
}
}