Exemple #1
0
        /// <summary>
        ///得到DiffractionPoint节点,并加入child节点的子节点List中
        /// </summary>
        /// <param name="fatherNode">父节点</param>
        /// <param name="cylinderCrossNode">绕射相交点</param>
        /// <param name="ter">地形</param>
        /// <param name="reArea">态势区域</param>
        ///  <param name="cityBuilding">建筑物</param>
        ///  <param name="TxFrequencyBand">发射机频段信息</param>
        /// <returns></returns>
        private void SetDiffractionNode(Node fatherNode, Node cylinderCrossNode, Terrain ter, City cityBuilding, ReceiveArea reArea, List <FrequencyBand> txFrequencyBand)
        {
            Node diffractionNode = new Node();

            diffractionNode.Position = cylinderCrossNode.DiffractionEdge.GetPedalPoint(cylinderCrossNode.Position);
            //若求出的绕射点位置在绕射棱外部或者与绕射棱两个端点重合
            if (!cylinderCrossNode.DiffractionEdge.JudgeIfPointInLineRange(diffractionNode.Position) ||
                diffractionNode.Position.equal(cylinderCrossNode.DiffractionEdge.StartPoint) ||
                diffractionNode.Position.equal(cylinderCrossNode.DiffractionEdge.EndPoint))
            {
                return;
            }
            else
            {
                diffractionNode.DiffractionEdge     = cylinderCrossNode.DiffractionEdge;
                diffractionNode.DisranceToEdge      = cylinderCrossNode.DisranceToEdge;
                diffractionNode.NodeStyle           = NodeStyle.DiffractionNode;
                diffractionNode.LayNum              = fatherNode.LayNum;
                diffractionNode.DiffractionNum      = fatherNode.DiffractionNum + 1;
                diffractionNode.IsReceiver          = false;
                diffractionNode.UAN                 = reArea.UAN;
                diffractionNode.DistanceToFrontNode = diffractionNode.Position.GetDistance(fatherNode.Position);
                diffractionNode.RayTracingDistance  = fatherNode.RayTracingDistance;
                diffractionNode.RayTracingDistance += diffractionNode.DistanceToFrontNode;
                diffractionNode.RayIn               = new RayInfo(fatherNode.Position, diffractionNode.Position);

                if (fatherNode.tempNode == null)
                {
                    fatherNode.ChildNodes.Add(diffractionNode);
                }
                else
                {
                    //        diffractionNode.DistanceToFrontNode = diffractionNode.Position.GetDistance(fatherNode.tempNode.Position);
                    fatherNode.tempNode.ChildNodes.Add(diffractionNode);
                }
                //         diffractionNode.JudgeIfNodeIsInArea(ter,reArea);
                //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,并将该节点设为end
                //但是当该节点在态势区域内时,则继续追踪
                if (((diffractionNode.DiffractionNum >= 2) || ((diffractionNode.LayNum + diffractionNode.DiffractionNum) >= 4)) && !diffractionNode.IsReceiver)
                {
                    diffractionNode.IsEnd = true;
                }
                //否则继续追踪射线
                else
                {
                    diffractionNode.IsEnd = false;
                    List <RayInfo> DiffractionRays = Rays.GetDiffractionRays(fatherNode.Position, diffractionNode.Position, diffractionNode.DiffractionEdge, 12);
                    for (int i = 0; i < DiffractionRays.Count; i++)
                    {
                        //AreaPath areaPath = new AreaPath(DiffractionRays[i], ter, reArea);
                        //areaPath.SetAreaRayPathNodes(diffractionNode, ter, reArea, cityBuilding, txFrequencyBand);
                    }
                }
            }
        }
Exemple #2
0
        /// <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);
                        }
                    }
                }
            }
        }
Exemple #3
0
        /// <summary>
        ///根据绕射棱两侧的绕射射线生成绕射追踪模型
        /// </summary>
        /// <param name="fatherPoint">父节点</param>
        /// <param name="leftRays">左侧的绕射射线</param>
        /// <param name="rightRays">右侧的绕射射线</param>
        /// <returns>绕射追踪模型</returns>
        private List <IRayTracing> GetDiffractionRayFaces(Point diffractionPoint, AdjacentEdge diffractionEdge)
        {
            //绕射范围两个端点的位置
            Point rightPoint = new RayInfo(diffractionPoint, diffractionEdge.EndPoint).GetPointOnRayVector(diffractionEdge.DiffCylinderRadius);
            Point leftPoint  = new RayInfo(diffractionPoint, diffractionEdge.StartPoint).GetPointOnRayVector(diffractionEdge.DiffCylinderRadius);
            //将点转成节点
            Node leftNode  = this.GetDiffractionChildNode(this.fatherNode, leftPoint, diffractionEdge);
            Node rightNode = this.GetDiffractionChildNode(this.fatherNode, rightPoint, diffractionEdge);
            //求出左侧节点的绕射射线
            List <RayInfo>     leftRays = Rays.GetDiffractionRays(this.fatherNode.Position, leftPoint, diffractionEdge, 24);
            List <IRayTracing> rayFaces = new List <IRayTracing>();

            //根据左侧绕射射线生成射线模型
            for (int i = 0; i < leftRays.Count; i++)
            {
                Point   fatherFacePoint   = new SpaceFace(diffractionEdge.StartPoint, leftRays[i].RayVector.CrossMultiplied(diffractionEdge.LineVector)).GetSubPointInFace(this.fatherNode.Position);
                Point   fatherMirrorPoint = new RayInfo(rightPoint, fatherFacePoint).GetPointOnRayVector(diffractionEdge.DiffCylinderRadius);
                RayInfo rightRay          = new RayInfo(rightPoint, new SpectVector(fatherMirrorPoint, rightPoint));
                rayFaces.Add(new FaceRay(leftNode, rightNode, leftRays[i], rightRay));
            }
            return(rayFaces);
        }