private static Point[][] GetPolygons(VoronoiResult2D voronoi, Vector offset)
{
Point[][] retVal = new Point[voronoi.ControlPoints.Length][];
for (int cntr = 0; cntr < voronoi.ControlPoints.Length; cntr++)
{
retVal[cntr] = voronoi.GetPolygon(cntr, 1). // don't need to worry about ray length, they are all segments
Select(o => o + offset). // shifting the points by offset
ToArray();
}
return(retVal);
}
private static double[] AnalyzeVoronoiCellSizes(VoronoiResult2D voronoi, ISOMInput[][] imagesByNode)
{
// Calculate area, density of each node
var sizes = Enumerable.Range(0, voronoi.ControlPoints.Length).
Select(o =>
{
double area = Math2D.GetAreaPolygon(voronoi.GetPolygon(o, 1)); // there are no rays
double imageCount = imagesByNode[o].Length.ToDouble();
return(new
{
ImagesCount = imageCount,
Area = area,
Density = imageCount / area,
});
}).
ToArray();
// Don't let any node have an area smaller than this
double minArea = sizes.Min(o => o.Area) * .2;
// Find the node with the largest density. This is the density to use when drawing all cells
var largestDensity = sizes.
OrderByDescending(o => o.Density).
First();
return(sizes.Select(o =>
{
// Figure out how much area it would take using the highest density
double area = o.ImagesCount / largestDensity.Density;
if (area < minArea)
{
area = minArea;
}
return area;
}).
ToArray());
}
private static double[] AnalyzeVoronoiCellSizes(VoronoiResult2D voronoi, ISOMInput[][] imagesByNode)
{
// Calculate area, density of each node
var sizes = Enumerable.Range(0, voronoi.ControlPoints.Length).
Select(o =>
{
double area = Math2D.GetAreaPolygon(voronoi.GetPolygon(o, 1)); // there are no rays
double imageCount = imagesByNode[o].Length.ToDouble();
return new
{
ImagesCount = imageCount,
Area = area,
Density = imageCount / area,
};
}).
ToArray();
// Don't let any node have an area smaller than this
double minArea = sizes.Min(o => o.Area) * .2;
// Find the node with the largest density. This is the density to use when drawing all cells
var largestDensity = sizes.
OrderByDescending(o => o.Density).
First();
return sizes.Select(o =>
{
// Figure out how much area it would take using the highest density
double area = o.ImagesCount / largestDensity.Density;
if (area < minArea)
{
area = minArea;
}
return area;
}).
ToArray();
}
private static Point[][] GetPolygons(VoronoiResult2D voronoi, Vector offset)
{
Point[][] retVal = new Point[voronoi.ControlPoints.Length][];
for (int cntr = 0; cntr < voronoi.ControlPoints.Length; cntr++)
{
retVal[cntr] = voronoi.GetPolygon(cntr, 1). // don't need to worry about ray length, they are all segments
Select(o => o + offset). // shifting the points by offset
ToArray();
}
return retVal;
}
