256 lines
11 KiB
C#
256 lines
11 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace CaeMesh
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{
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[Serializable]
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public class LinearPyramidElement : FeElement3D
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{
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// Variables
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private static int vtkCellTypeInt = (int)vtkCellType.VTK_PYRAMID;
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private static double a = 1.0 / 3.0;
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private static double b = 0.25;
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// Properties
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// Constructors
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public LinearPyramidElement(int id, int[] nodeIds)
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: base(id, nodeIds)
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{
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}
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public LinearPyramidElement(int id, int partId, int[] nodeIds)
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: base(id, partId, nodeIds)
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{
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}
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// Methods
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public override int[] GetVtkNodeIds()
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{
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// return a copy
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return NodeIds.ToArray();
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}
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public override int[] GetGmshNodeIds()
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{
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// return a copy -> ToArray
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return NodeIds.ToArray();
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}
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public override int GetVtkCellType()
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{
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return vtkCellTypeInt;
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}
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public override FeFaceName GetFaceNameFromSortedNodeIds(int[] nodeIds)
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{
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// The node ids are sorted
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// S1 = 1-2-3-4 . 0-1-2-3 . 0-1-2-3
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// S2 = 1-5-2 . 0-4-1 . 0-1-4
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// S3 = 2-5-3 . 1-4-2 . 1-2-4
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// S4 = 3-5-4 . 2-4-3 . 2-3-4
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// S5 = 4-5-1 . 3-4-0 . 0-3-4
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if (nodeIds[2] == 2) return FeFaceName.S1;
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else if (nodeIds[1] == 1) return FeFaceName.S2;
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else if (nodeIds[1] == 2) return FeFaceName.S3;
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else if (nodeIds[0] == 2) return FeFaceName.S4;
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else if (nodeIds[0] == 0) return FeFaceName.S5;
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else throw new NotSupportedException();
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}
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public override int[] GetNodeIdsFromFaceName(FeFaceName faceName)
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{
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// S1 = 1-2-3-4 . 0-1-2-3
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// S2 = 1-5-2 . 0-4-1
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// S3 = 2-5-3 . 1-4-2
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// S4 = 3-5-4 . 2-4-3
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// S5 = 4-5-1 . 3-4-0
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switch (faceName)
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{
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case FeFaceName.S1:
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return new int[] { NodeIds[0], NodeIds[1], NodeIds[2], NodeIds[3] };
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case FeFaceName.S2:
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return new int[] { NodeIds[0], NodeIds[4], NodeIds[1] };
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case FeFaceName.S3:
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return new int[] { NodeIds[1], NodeIds[4], NodeIds[2] };
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case FeFaceName.S4:
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return new int[] { NodeIds[2], NodeIds[4], NodeIds[3] };
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case FeFaceName.S5:
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return new int[] { NodeIds[3], NodeIds[4], NodeIds[0] };
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default:
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throw new NotSupportedException();
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}
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}
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public override int[] GetVtkCellFromFaceName(FeFaceName faceName)
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{
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// Invert the surface normal to point outwards
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// S1 = 1-2-3-4 . 0-1-2-3 . 0-3-2-1
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// S2 = 1-5-2 . 0-4-1 . 0-1-4
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// S3 = 2-5-3 . 1-4-2 . 1-2-4
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// S4 = 3-5-4 . 2-4-3 . 2-3-4
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// S5 = 4-5-1 . 3-4-0 . 3-0-4
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switch (faceName)
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{
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case FeFaceName.S1:
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return new int[] { NodeIds[0], NodeIds[3], NodeIds[2], NodeIds[1] };
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case FeFaceName.S2:
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return new int[] { NodeIds[0], NodeIds[1], NodeIds[4] };
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case FeFaceName.S3:
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return new int[] { NodeIds[1], NodeIds[2], NodeIds[4] };
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case FeFaceName.S4:
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return new int[] { NodeIds[2], NodeIds[3], NodeIds[4] };
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case FeFaceName.S5:
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return new int[] { NodeIds[3], NodeIds[0], NodeIds[4] };
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default:
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throw new NotSupportedException();
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}
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}
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public override int GetVtkCellIdFromCell(int[] cell)
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{
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if (cell[0] == NodeIds[0] && cell[1] == NodeIds[3] && cell[2] == NodeIds[2] && cell[3] == NodeIds[1]) return 0;
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else if (cell[0] == NodeIds[0] && cell[1] == NodeIds[1] && cell[2] == NodeIds[4]) return 1;
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else if (cell[0] == NodeIds[1] && cell[1] == NodeIds[2] && cell[2] == NodeIds[4]) return 2;
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else if (cell[0] == NodeIds[2] && cell[1] == NodeIds[3] && cell[2] == NodeIds[4]) return 3;
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else if (cell[0] == NodeIds[3] && cell[1] == NodeIds[0] && cell[2] == NodeIds[4]) return 4;
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return -1;
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}
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public override int[][] GetAllVtkCells()
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{
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// Use Method: GetVtkCellFromFaceName(FeFaceName faceName)
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int[][] cells = new int[5][];
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//
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cells[0] = new int[] { NodeIds[0], NodeIds[3], NodeIds[2], NodeIds[1] };
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cells[1] = new int[] { NodeIds[0], NodeIds[1], NodeIds[4] };
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cells[2] = new int[] { NodeIds[1], NodeIds[2], NodeIds[4] };
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cells[3] = new int[] { NodeIds[2], NodeIds[3], NodeIds[4] };
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cells[4] = new int[] { NodeIds[3], NodeIds[0], NodeIds[4] };
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//
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return cells;
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}
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public override Dictionary<FeFaceName, double> GetFaceNamesAndAreasFromNodeSet(HashSet<int> nodeSet,
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Dictionary<int, FeNode> nodes,
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bool edgeFaces)
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{
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int significantNodes = 5;
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bool[] faceNodeIds = new bool[significantNodes];
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//
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int count = 0;
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for (int i = 0; i < significantNodes; i++)
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{
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if (nodeSet.Contains(NodeIds[i]))
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{
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faceNodeIds[i] = true;
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count++;
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}
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// If three or more nodes were missed: break
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if (i + 1 - count >= 3) break;
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}
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// S1 = 1-2-3-4 . 0-1-2-3
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// S2 = 1-5-2 . 0-4-1
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// S3 = 2-5-3 . 1-4-2
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// S4 = 3-5-4 . 2-4-3
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// S5 = 4-5-1 . 3-4-0
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Dictionary<FeFaceName, double> faces = new Dictionary<FeFaceName, double>();
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//
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if (count >= 3)
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{
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if (faceNodeIds[0] && faceNodeIds[1] && faceNodeIds[2] && faceNodeIds[3])
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faces.Add(FeFaceName.S1, GetArea(FeFaceName.S1, nodes));
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if (faceNodeIds[0] && faceNodeIds[4] && faceNodeIds[1])
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faces.Add(FeFaceName.S2, GetArea(FeFaceName.S2, nodes));
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if (faceNodeIds[1] && faceNodeIds[4] && faceNodeIds[2])
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faces.Add(FeFaceName.S3, GetArea(FeFaceName.S3, nodes));
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if (faceNodeIds[2] && faceNodeIds[4] && faceNodeIds[3])
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faces.Add(FeFaceName.S4, GetArea(FeFaceName.S4, nodes));
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if (faceNodeIds[3] && faceNodeIds[4] && faceNodeIds[0])
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faces.Add(FeFaceName.S5, GetArea(FeFaceName.S5, nodes));
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}
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//
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return faces;
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}
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public override double[] GetEquivalentForcesFromFaceName(FeFaceName faceName)
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{
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if (faceName == FeFaceName.S1)
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return new double[] { b, b, b, b };
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else if (faceName == FeFaceName.S2 || faceName == FeFaceName.S3 ||
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faceName == FeFaceName.S4 || faceName == FeFaceName.S5)
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//return new double[] { a, a, a };
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throw new NotImplementedException();
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else throw new NotSupportedException();
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}
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public override double[] GetEquivalentForcesFromFaceName(FeFaceName faceName, double[] nodalValues)
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{
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if (faceName == FeFaceName.S1)
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return GetEquivalentForces(typeof(LinearQuadrilateralElement), nodalValues);
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else if (faceName == FeFaceName.S2 || faceName == FeFaceName.S3 ||
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faceName == FeFaceName.S4 || faceName == FeFaceName.S5)
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//return GetEquivalentForces(typeof(LinearTriangleElement), nodalValues);
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throw new NotImplementedException();
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else throw new NotSupportedException();
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}
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public override double GetArea(FeFaceName faceName, Dictionary<int, FeNode> nodes)
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{
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int[] cell = GetVtkCellFromFaceName(faceName);
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if (cell.Length == 4) // faceName == FeFaceName.S1
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return GeometryTools.RectangleArea(nodes[cell[0]], nodes[cell[1]], nodes[cell[2]], nodes[cell[3]]);
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else
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return GeometryTools.TriangleArea(nodes[cell[0]], nodes[cell[1]], nodes[cell[2]]);
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}
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public override double[] GetFaceCG(FeFaceName faceName, Dictionary<int, FeNode> nodes, out double area)
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{
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double[] cg;
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int[] cell = GetVtkCellFromFaceName(faceName);
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if (cell.Length == 4) // faceName == FeFaceName.S1
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cg = GeometryTools.QuadrilateralCG(nodes[cell[0]], nodes[cell[1]], nodes[cell[2]], nodes[cell[3]], out area);
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else
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cg = GeometryTools.TriangleCG(nodes[cell[0]], nodes[cell[1]], nodes[cell[2]], out area);
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return cg;
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}
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public override double GetVolume(Dictionary<int, FeNode> nodes)
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{
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return GeometryTools.PyramidVolume(nodes[NodeIds[0]], nodes[NodeIds[1]],
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nodes[NodeIds[2]], nodes[NodeIds[3]], nodes[NodeIds[4]]);
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}
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public override double[] GetCG(Dictionary<int, FeNode> nodes, out double volume)
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{
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return GeometryTools.PyramidCG(nodes[NodeIds[0]], nodes[NodeIds[1]], nodes[NodeIds[2]],
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nodes[NodeIds[3]], nodes[NodeIds[4]], out volume);
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}
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public override FeElement DeepCopy()
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{
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return new LinearPyramidElement(Id, PartId, NodeIds.ToArray());
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}
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//
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public LinearWedgeElement ConvertToWedge()
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{
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int[] nodeIds = new int[6];
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nodeIds[0] = NodeIds[0];
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nodeIds[1] = NodeIds[4];
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nodeIds[2] = NodeIds[1];
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//
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nodeIds[3] = NodeIds[3];
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nodeIds[4] = NodeIds[4];
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nodeIds[5] = NodeIds[2];
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//
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return new LinearWedgeElement(Id, nodeIds);
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}
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public LinearHexaElement ConvertToHex()
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{
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int[] nodeIds = new int[8];
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nodeIds[0] = NodeIds[0];
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nodeIds[1] = NodeIds[1];
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nodeIds[2] = NodeIds[2];
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nodeIds[3] = NodeIds[3];
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//
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nodeIds[4] = NodeIds[4];
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nodeIds[5] = NodeIds[4];
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nodeIds[6] = NodeIds[4];
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nodeIds[7] = NodeIds[4];
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//
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return new LinearHexaElement(Id, nodeIds);
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}
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}
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}
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