public static BoundaryLine[] ToLines(Vector[] polygon)
{
BoundaryLine[] lines = new BoundaryLine[polygon.Length];
BoundaryLine line;
for (int i = 0; i < polygon.Length - 1; ++i)
{
line = new BoundaryLine
{
Start = new Vertex()
{
Position = polygon[i]
},
End = new Vertex()
{
Position = polygon[i + 1]
},
};
lines[i] = line;
}
line = new BoundaryLine {
Start = new Vertex(), End = new Vertex()
};
line.Start.Position = polygon[polygon.Length - 1];
line.End.Position = polygon[0];
lines[lines.Length - 1] = line;
return(lines);
}
static IDictionary <int, Transformation> CreatePeriodicTransformationsFrom(
Vector[] boundary,
IDictionary <int, int> periodicBoundaryMap)
{
BoundaryLine[] boundaryLines = BoundaryLine.ToLines(boundary);
return(CreatePeriodicTransformationsFrom(boundaryLines, periodicBoundaryMap));
}
public MeshGenerator(MeshingAlgorithm.State settings)
{
cutter = new Cutter <T>();
boundingBox = settings.BoundingBox;
boundaryLines = BoundaryLine.ToLines(settings.Boundary);
boundaryHandler = new PeriodicBoundaryHandler <T>(settings.PeriodicMap);
}
public static BoundaryLine[] Copy(BoundaryLine[] source)
{
BoundaryLine[] copy = new BoundaryLine[source.Length];
for (int i = 0; i < copy.Length; ++i)
{
copy[i] = source[i].Copy();
}
return(copy);
}
public static BoundaryLine GetReverse(BoundaryLine line)
{
BoundaryLine reverse = new BoundaryLine
{
Start = line.End,
End = line.Start
};
return(reverse);
}
public BoundaryTransformation(BoundaryLine source, BoundaryLine target)
: base(2)
{
if (source.Length() != target.Length())
{
throw new Exception("There is something rotten in the state of the boundary lengths");
}
Matrix = GetRotationMatrixFrom(
source.End.Position - source.Start.Position,
target.End.Position - target.Start.Position);
AffineTransformation = (-1) * (Matrix * source.Start.Position) + source.Start.Position + (target.Start.Position - source.Start.Position);
}
public BoundaryLine Copy()
{
var copy = new BoundaryLine();
copy.Start = new Vertex
{
Position = new Vector(Start.Position)
};
copy.End = new Vertex
{
Position = new Vector(End.Position)
};
return(copy);
}
static IDictionary <int, Transformation> CreatePeriodicTransformationsFrom(
BoundaryLine[] boundary,
IDictionary <int, int> periodicBoundaryMap)
{
IDictionary <int, Transformation> periodicTrafoMap = new LinkedListDictionary <int, Transformation>();
foreach (var boundaryPair in periodicBoundaryMap)
{
BoundaryLine source = boundary[boundaryPair.Key];
BoundaryLine target = BoundaryLine.GetReverse(boundary[boundaryPair.Value]);
Transformation transformation = new BoundaryTransformation(source, target);
periodicTrafoMap.Add(boundaryPair.Key, transformation);
}
return(periodicTrafoMap);
}