public static void FindEdgeSpans(
string pointGridFilePath,
string outputFilePath)
{
using var pointGrid = PointGrid.Load(pointGridFilePath);
using var timer = TimedOperation.Start("points", totalWork: pointGrid.ViewPort.Resolution.Height);
EdgeSpanStream.Write(
outputFilePath,
pointGrid.ViewPort,
pointGrid.ComputationType,
GetEdgeSpans(pointGrid, timer));
}
public void ShouldRountTrip()
{
using (var tempFile = new TempFile())
{
var pointsInSet = new[]
{
true,
true,
true,
true,
false,
true,
true,
false,
false,
false,
true,
false,
false,
false,
false,
false,
};
PointGrid.Write(
tempFile.Path,
new ViewPort(
new ComplexArea(new DoubleRange(-1, 1), new DoubleRange(-1, 1)),
new Size(4, 4)),
ComputationType.ScalarFloat,
pointsInSet);
using (var pointGrid = PointGrid.Load(tempFile.Path))
{
var rows = pointGrid.ToArray();
for (int rowIndex = 0; rowIndex < 4; rowIndex++)
{
Assert.That(rows[rowIndex].Y, Is.EqualTo(rowIndex), "Wrong row Y position.");
Assert.That(
rows[rowIndex].ToArray(),
Is.EqualTo(pointsInSet.Skip(rowIndex * 4).Take(4).ToArray()),
"Did not return correct values for points in set.");
}
}
}
}
public static void Render(string gridFilePath, string imageFilePath)
{
Log.Info($"Output image: {imageFilePath}");
using var grid = PointGrid.Load(gridFilePath);
using var timer = TimedOperation.Start("points", totalWork: grid.ViewPort.Resolution.Area());
var image = new FastImage(grid.ViewPort.Resolution);
image.Fill(Color.White);
Parallel.ForEach(grid, row =>
{
foreach (var setSegment in row.GetSegmentsInSet())
{
foreach (var x in Enumerable.Range(setSegment.StartCol, setSegment.Length))
{
image.SetPixel(x, row.Y, Color.Black);
}
}
timer.AddWorkDone(grid.ViewPort.Resolution.Width);
});
image.Save(imageFilePath);
}