/// <summary>
/// This returns all the unique edge triangles of the cells passed in (each face of the cell cube has two triangles), and which
/// cells share each of those triangles
/// </summary>
private static Tuple<ITriangle, int[]>[] GetBlockedCellsSprtEdgeMap(Rectangle3DIndexedMapped[] cells)
{
if (cells.Length == 0)
{
return new Tuple<ITriangle, int[]>[0];
}
// Get the triangles for each cell
List<Tuple<int, Tuple<int, int, int>>> trianglesPerCell = new List<Tuple<int, Tuple<int, int, int>>>();
for (int cntr = 0; cntr < cells.Length; cntr++)
{
Tuple<int, int, int>[] trianglesOrdered = cells[cntr].GetEdgeTriangles().Select(o =>
{
int[] indices = o.IndexArray.OrderBy(p => p).ToArray(); // sorting them so they can be easily compared to other cell's triangles
return Tuple.Create(indices[0], indices[1], indices[2]);
}).
ToArray();
trianglesPerCell.AddRange(trianglesOrdered.Select(o => Tuple.Create(cntr, o)));
}
Point3D[] points = cells[0].AllPoints;
// Now group by triangle
var retVal = trianglesPerCell.GroupBy(o => o.Item2).
Select(o =>
{
ITriangle triangle = new TriangleIndexed(o.Key.Item1, o.Key.Item2, o.Key.Item3, points);
int[] correspondingCells = o.Select(p => p.Item1).Distinct().ToArray();
return Tuple.Create(triangle, correspondingCells);
}).
ToArray();
// Exit Function
return retVal;
}
public Rectangle3DIndexedMapped[] GetCells(double rectangleSize, bool shouldTransform = false)
{
double cellSize = rectangleSize / _size;
double halfSize = rectangleSize / 2d;
Transform3DGroup transform = null;
if (shouldTransform)
{
transform = new Transform3DGroup();
transform.Children.Add(new RotateTransform3D(new QuaternionRotation3D(this.RotationWorld)));
transform.Children.Add(new TranslateTransform3D(this.PositionWorld.ToVector()));
}
// Corner Points
int cornerSize = _size + 1;
Point3D[] cornerPoints = new Point3D[cornerSize * cornerSize * cornerSize];
for (int x = 0; x < cornerSize; x++)
{
for (int y = 0; y < cornerSize; y++)
{
for (int z = 0; z < cornerSize; z++)
{
Point3D point = new Point3D(-halfSize + (x * cellSize), -halfSize + (y * cellSize), -halfSize + (z * cellSize));
cornerPoints[FluidField3D.Get1DIndex(x, y, z, cornerSize)] = shouldTransform ? transform.Transform(point) : point;
}
}
}
// Cells
Rectangle3DIndexedMapped[] retVal = new Rectangle3DIndexedMapped[_size1D];
for (int x = 0; x < _size; x++)
{
for (int y = 0; y < _size; y++)
{
for (int z = 0; z < _size; z++)
{
int index = Get1DIndex(x, y, z);
retVal[index] = new Rectangle3DIndexedMapped(new Mapping_3D_1D(x, y, z, index), cornerPoints, new int[]
{
FluidField3D.Get1DIndex(x, y, z, cornerSize),
FluidField3D.Get1DIndex(x, y, z + 1, cornerSize),
FluidField3D.Get1DIndex(x, y + 1, z, cornerSize),
FluidField3D.Get1DIndex(x, y + 1, z + 1, cornerSize),
FluidField3D.Get1DIndex(x + 1, y, z, cornerSize),
FluidField3D.Get1DIndex(x + 1, y, z + 1, cornerSize),
FluidField3D.Get1DIndex(x + 1, y + 1, z, cornerSize),
FluidField3D.Get1DIndex(x + 1, y + 1, z + 1, cornerSize)
});
}
}
}
return retVal;
}
/// <summary>
/// This returns all the unique corner points of the cells passed in, and which cells share each of those points
/// </summary>
private static Tuple<Point3D, int[]>[] GetBlockedCellsSprtPointMap(Rectangle3DIndexedMapped[] cells)
{
if (cells.Length == 0)
{
return new Tuple<Point3D, int[]>[0];
}
// Build an intermediate map
SortedList<int, List<int>> points_cells = new SortedList<int, List<int>>();
for (int cntr = 0; cntr < cells.Length; cntr++)
{
foreach (int index in cells[cntr].Indices)
{
if (!points_cells.ContainsKey(index))
{
points_cells.Add(index, new List<int>());
}
points_cells[index].Add(cntr);
}
}
Point3D[] allPoints = cells[0].AllPoints;
// Build the final map
List<Tuple<Point3D, int[]>> retVal = new List<Tuple<Point3D, int[]>>();
foreach (int pointIndex in points_cells.Keys)
{
retVal.Add(Tuple.Create(allPoints[pointIndex], points_cells[pointIndex].ToArray()));
}
// Exit Function
return retVal.ToArray();
}