public static void Render(string pointFilePath, Size?resolution)
{
using var points = PointStream.Load(pointFilePath);
var viewPort = points.ViewPort;
var actualResolution = resolution ?? points.ViewPort.Resolution;
if (actualResolution != points.ViewPort.Resolution)
{
viewPort = new ViewPort(viewPort.Area, actualResolution);
}
var imageFilePath = pointFilePath + $".{actualResolution.Width}x{actualResolution.Height}.png";
using var timer = TimedOperation.Start("points", totalWork: actualResolution.Area());
var image = new FastImage(actualResolution);
image.Fill(Color.White);
Parallel.ForEach(points, point =>
{
image.SetPixel(viewPort.GetPosition(point), Color.Black);
timer.AddWorkDone(1);
});
image.Save(imageFilePath);
}
public static void RenderAllSpans(string edgeSpansPath, string imageFilePath, bool showDirections)
{
Log.Info($"Output image: {imageFilePath}");
if (showDirections)
{
Log.Info("Displaying span directions as well.");
}
using var spans = EdgeSpanStream.Load(edgeSpansPath);
using var timer = TimedOperation.Start("edge spans", totalWork: showDirections?spans.Count * 2 : spans.Count);
var scale = showDirections ? 3 : 1;
var resolution = spans.ViewPort.Resolution.Scale(scale);
var image = new FastImage(resolution);
image.Fill(Color.White);
Parallel.ForEach(spans, logicalSpan =>
{
if (showDirections)
{
var scaledLocation = logicalSpan.Location.Scale(scale);
for (int yDelta = 0; yDelta < 3; yDelta++)
{
for (int xDelta = 0; xDelta < 3; xDelta++)
{
image.SetPixel(
scaledLocation.OffsetBy(xDelta, yDelta),
(logicalSpan.Location.X + logicalSpan.Location.Y) % 2 == 1 ? Color.Black : Color.Gray);
}
}
}
else
{
image.SetPixel(
logicalSpan.Location,
Color.Black);
}
timer.AddWorkDone(1);
});
if (showDirections)
{
Parallel.ForEach(spans, locatedSpan =>
{
var scaledLocation = locatedSpan.Location.Scale(scale);
var pointingTo = scaledLocation.OffsetBy(1, 1).OffsetIn(locatedSpan.ToOutside);
image.SetPixel(
pointingTo,
Color.Red);
timer.AddWorkDone(1);
});
}
image.Save(imageFilePath);
}
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);
}
